component
IN-S42ATA
Public Unreviewedby AravK
Inolux Corporation · Top View SMD LED · 0402 (1.0 × 0.5mm) · AlInGaP
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<span style="color:var(--text-muted);font-size:12px;margin-right:8px">Full page:</span>
<code style="color:var(--accent);font-size:11px;background:var(--elevated);padding:4px 8px;border-radius:4px;user-select:all">https://wiki-ufypy5dpx93o.adom.cloud/static/libraries/in-s42ata/IN-S42ATA.html</code>
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<div class="header">
<div class="header-top">
<div class="brand">Adom</div>
<div class="vsep"></div>
<div class="crumb">Components › LEDs › 0402</div>
</div>
<h1>IN-S42ATA — <span class="val">Amber</span></h1>
<div class="subtitle">Inolux Corporation · Top View SMD LED · 0402 (1.0 × 0.5mm) · AlInGaP</div>
<div class="tags">
<span class="tag pkg">0402</span>
<span class="tag mfr">Inolux</span>
<span class="tag series">IN-S42AT</span>
<span class="tag rohs">RoHS</span>
<span class="tag app">Amber LED</span>
</div>
</div>
<div class="container">
<!-- Key Specs -->
<div class="section">
<div class="spec-cards">
<div class="spec-card highlight">
<div class="sc-label">Wavelength</div>
<div class="sc-value">605nm</div>
<div class="sc-detail">610nm peak</div>
</div>
<div class="spec-card">
<div class="sc-label">Luminous Intensity</div>
<div class="sc-value">145mcd</div>
<div class="sc-detail">@ 20mA</div>
</div>
<div class="spec-card">
<div class="sc-label">Forward Voltage</div>
<div class="sc-value">2.1V</div>
<div class="sc-detail">max 2.6V</div>
</div>
<div class="spec-card">
<div class="sc-label">Forward Current</div>
<div class="sc-value">25mA</div>
<div class="sc-detail">20mA typical</div>
</div>
<div class="spec-card">
<div class="sc-label">Viewing Angle</div>
<div class="sc-value">130°</div>
<div class="sc-detail">2θ½</div>
</div>
<div class="spec-card">
<div class="sc-label">Mouser</div>
<div class="sc-value">$0.26</div>
<div class="sc-detail">7,587 in stock</div>
</div>
</div>
</div>
<div class="grid-2">
<!-- Left column -->
<div>
<!-- Electrical Characteristics -->
<div class="section">
<h2 class="section-title">Electrical Characteristics</h2>
<div class="card">
<table class="detail-table">
<tr><td>Forward Voltage (typ)</td><td>2.1V @ 20mA</td></tr>
<tr><td>Forward Voltage (max)</td><td>2.6V @ 20mA</td></tr>
<tr><td>Reverse Voltage (max)</td><td>5V</td></tr>
<tr><td>Forward Current (max)</td><td>25mA</td></tr>
<tr><td>Peak Forward Current</td><td>100mA (1/10, 0.1ms)</td></tr>
<tr><td>Power Dissipation</td><td>78mW</td></tr>
<tr><td>Dominant Wavelength</td><td>605nm</td></tr>
<tr><td>Peak Wavelength</td><td>610nm</td></tr>
<tr><td>Luminous Intensity</td><td>145 mcd @ 20mA</td></tr>
<tr><td>Viewing Angle (2θ½)</td><td>130°</td></tr>
<tr><td>Material</td><td>AlInGaP</td></tr>
<tr><td>Lens Type</td><td>Clear</td></tr>
</table>
</div>
</div>
<!-- Operating Conditions -->
<div class="section">
<h2 class="section-title">Operating Conditions</h2>
<div class="card">
<table class="detail-table">
<tr><td>Operating Temp</td><td>−30°C to +80°C</td></tr>
<tr><td>Storage Temp</td><td>−40°C to +85°C</td></tr>
<tr><td>ESD Sensitivity</td><td>AlInGaP — handle with care</td></tr>
<tr><td>Polarity</td><td>Cathode marked on package</td></tr>
</table>
<div style="margin-top:10px;padding:8px 12px;background:rgba(248,81,73,0.08);border:1px solid rgba(248,81,73,0.2);border-radius:6px;font-size:11px;color:var(--red)">
⚠ ESD Sensitive Device — AlInGaP LEDs require proper ESD precautions during handling and assembly. Use grounded wrist straps and ESD-safe workstations.
</div>
</div>
</div>
</div>
<!-- Right column -->
<div>
<!-- Package Drawing -->
<div class="section">
<h2 class="section-title">Package & Dimensions</h2>
<div class="card">
<div class="pkg-drawing">
<svg width="100%" height="200" viewBox="0 0 500 200">
<!-- Top view -->
<text x="120" y="14" fill="#8b949e" font-size="10" text-anchor="middle">Top View</text>
<!-- LED body -->
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<!-- Anode pad (left) -->
<rect x="55" y="24" width="25" height="65" rx="1" fill="rgba(255,140,0,0.15)" stroke="#FF8C00" stroke-width="1"/>
<!-- Cathode pad (right) with mark -->
<rect x="160" y="24" width="25" height="65" rx="1" fill="rgba(255,140,0,0.15)" stroke="#FF8C00" stroke-width="1"/>
<!-- Cathode mark (T-bar) -->
<line x1="155" y1="28" x2="155" y2="85" stroke="#FF8C00" stroke-width="1.5" stroke-dasharray="3,2"/>
<!-- Die representation -->
<rect x="92" y="38" width="36" height="37" rx="1" fill="rgba(255,140,0,0.25)" stroke="rgba(255,140,0,0.5)" stroke-width="0.8"/>
<!-- Bond wire -->
<path d="M110,47 Q125,35 135,47" stroke="rgba(255,200,100,0.6)" stroke-width="0.6" fill="none"/>
<!-- Cathode indicator -->
<text x="168" y="18" fill="#FF8C00" font-size="9" text-anchor="middle">K (cathode)</text>
<!-- Anode label -->
<text x="68" y="18" fill="#8b949e" font-size="9" text-anchor="middle">A</text>
<!-- Width dimension -->
<line x1="55" y1="102" x2="185" y2="102" stroke="#484f58" stroke-width="0.5"/>
<line x1="55" y1="98" x2="55" y2="106" stroke="#484f58" stroke-width="0.5"/>
<line x1="185" y1="98" x2="185" y2="106" stroke="#484f58" stroke-width="0.5"/>
<text x="120" y="118" fill="#e6edf3" font-size="10" text-anchor="middle">1.0 ± 0.1</text>
<!-- Depth dimension -->
<line x1="195" y1="24" x2="195" y2="89" stroke="#484f58" stroke-width="0.5"/>
<line x1="191" y1="24" x2="199" y2="24" stroke="#484f58" stroke-width="0.5"/>
<line x1="191" y1="89" x2="199" y2="89" stroke="#484f58" stroke-width="0.5"/>
<text x="215" y="60" fill="#e6edf3" font-size="10">0.5 ± 0.1</text>
<!-- Side view -->
<text x="380" y="14" fill="#8b949e" font-size="10" text-anchor="middle">Side View</text>
<!-- LED body side -->
<rect x="315" y="40" width="130" height="38" rx="2" fill="#1c2128" stroke="#30363d" stroke-width="1.5"/>
<!-- Lens (clear dome on top) -->
<path d="M320,40 Q380,30 445,40" stroke="rgba(255,140,0,0.5)" stroke-width="1.5" fill="rgba(255,140,0,0.08)"/>
<!-- Terminals -->
<rect x="315" y="40" width="20" height="38" rx="1" fill="rgba(255,140,0,0.15)" stroke="#FF8C00" stroke-width="1"/>
<rect x="425" y="40" width="20" height="38" rx="1" fill="rgba(255,140,0,0.15)" stroke="#FF8C00" stroke-width="1"/>
<!-- Height dimension -->
<line x1="455" y1="30" x2="455" y2="78" stroke="#484f58" stroke-width="0.5"/>
<line x1="451" y1="30" x2="459" y2="30" stroke="#484f58" stroke-width="0.5"/>
<line x1="451" y1="78" x2="459" y2="78" stroke="#484f58" stroke-width="0.5"/>
<text x="465" y="58" fill="#e6edf3" font-size="10">0.45 ± 0.1</text>
<!-- Physical specs -->
<text x="120" y="145" fill="#8b949e" font-size="10" text-anchor="middle">0402 (1005 metric)</text>
<text x="380" y="100" fill="#8b949e" font-size="10" text-anchor="middle">Clear lens · AlInGaP</text>
<!-- Polarity note -->
<rect x="55" y="158" width="390" height="28" rx="4" fill="rgba(255,140,0,0.06)" stroke="rgba(255,140,0,0.2)" stroke-width="0.5"/>
<text x="250" y="176" fill="#FF8C00" font-size="10" text-anchor="middle">⚠ Polarized — cathode mark on package indicates negative terminal</text>
</svg>
</div>
</div>
</div>
<!-- Land Pattern -->
<div class="section">
<h2 class="section-title">Recommended Land Pattern</h2>
<div class="card">
<table class="detail-table">
<tr><td>Pad Width</td><td>0.4 ± 0.1mm</td></tr>
<tr><td>Pad Height</td><td>0.6 ± 0.1mm</td></tr>
<tr><td>Pad Spacing (center-to-center)</td><td>0.6 ± 0.1mm</td></tr>
<tr><td>Polarity</td><td>Cathode marked on PCB</td></tr>
</table>
</div>
</div>
</div>
</div>
<!-- Color Swatch -->
<div class="section">
<h2 class="section-title">Emission Color</h2>
<div class="card color-swatch">
<div class="swatch-block" style="background: linear-gradient(135deg, #FF8C00, #FF6600); box-shadow: 0 4px 24px rgba(255,140,0,0.3); display:flex; align-items:center; justify-content:center;">
<span style="font-size:28px;font-weight:700;font-family:'Familjen Grotesk',sans-serif;color:#fff;text-shadow:0 2px 8px rgba(0,0,0,0.5)">Amber</span>
</div>
<div class="swatch-label" style="color:var(--amber)">605nm Dominant Wavelength</div>
<div class="swatch-detail">Peak wavelength 610nm · AlInGaP semiconductor · CSS approximation: #FF8C00</div>
</div>
</div>
<!-- Chart 1: Spectral Distribution -->
<div class="section">
<h2 class="section-title">Spectral Distribution</h2>
<div class="chart-wrap">
<h3>Emission Spectrum — Relative Intensity vs. Wavelength</h3>
<svg id="spectral-chart" width="100%" height="280" viewBox="0 0 700 280">
<rect x="60" y="20" width="600" height="200" fill="#0d1117" rx="4"/>
<!-- Grid -->
<line x1="60" y1="220" x2="660" y2="220" stroke="#21262d" stroke-width="1"/>
<line x1="60" y1="20" x2="60" y2="220" stroke="#21262d" stroke-width="1"/>
<line x1="60" y1="170" x2="660" y2="170" stroke="#21262d" stroke-width="0.5" stroke-dasharray="4,4"/>
<line x1="60" y1="120" x2="660" y2="120" stroke="#21262d" stroke-width="0.5" stroke-dasharray="4,4"/>
<line x1="60" y1="70" x2="660" y2="70" stroke="#21262d" stroke-width="0.5" stroke-dasharray="4,4"/>
<line x1="60" y1="20" x2="660" y2="20" stroke="#21262d" stroke-width="0.5" stroke-dasharray="4,4"/>
<!-- Vertical grid -->
<line x1="180" y1="20" x2="180" y2="220" stroke="#21262d" stroke-width="0.5" stroke-dasharray="4,4"/>
<line x1="300" y1="20" x2="300" y2="220" stroke="#21262d" stroke-width="0.5" stroke-dasharray="4,4"/>
<line x1="420" y1="20" x2="420" y2="220" stroke="#21262d" stroke-width="0.5" stroke-dasharray="4,4"/>
<line x1="540" y1="20" x2="540" y2="220" stroke="#21262d" stroke-width="0.5" stroke-dasharray="4,4"/>
<!-- Spectral curve (Gaussian-like, peak at 605nm) -->
<!-- x scale: 500nm=60, 700nm=660, so 1nm = 3px -->
<!-- y scale: 0%=220, 100%=20, so 1% = 2px -->
<!-- Fill area under curve -->
<path d="M60,220 L60,220 Q120,220 180,219 Q240,218 285,210 Q300,205 315,190 Q330,160 345,120 Q352,90 358,50 Q363,28 369,22 Q375,28 381,50 Q387,90 394,120 Q408,160 423,190 Q438,205 453,210 Q498,218 540,219 Q600,220 660,220 Z"
fill="url(#amberGrad)" opacity="0.3"/>
<defs>
<linearGradient id="amberGrad" x1="0" y1="0" x2="0" y2="1">
<stop offset="0%" stop-color="#FF8C00" stop-opacity="0.6"/>
<stop offset="100%" stop-color="#FF8C00" stop-opacity="0.05"/>
</linearGradient>
</defs>
<!-- Spectral curve line -->
<path d="M60,220 Q120,220 180,219 Q240,218 285,210 Q300,205 315,190 Q330,160 345,120 Q352,90 358,50 Q363,28 369,22 Q375,28 381,50 Q387,90 394,120 Q408,160 423,190 Q438,205 453,210 Q498,218 540,219 Q600,220 660,220"
stroke="#FF8C00" stroke-width="2.5" fill="none"/>
<!-- Peak annotation -->
<circle cx="369" cy="22" r="4" fill="#FF8C00" opacity="0.9"/>
<line x1="369" y1="22" x2="369" y2="220" stroke="#FF8C00" stroke-width="0.5" stroke-dasharray="3,3" opacity="0.4"/>
<text x="369" y="238" fill="#FF8C00" font-size="10" text-anchor="middle">605nm</text>
<!-- FWHM indicator -->
<line x1="345" y1="120" x2="394" y2="120" stroke="#FF8C00" stroke-width="1" stroke-dasharray="4,2" opacity="0.6"/>
<text x="420" y="116" fill="#8b949e" font-size="9">FWHM ~20nm</text>
<!-- Y axis labels -->
<text x="55" y="224" fill="#484f58" font-size="9" text-anchor="end">0%</text>
<text x="55" y="174" fill="#484f58" font-size="9" text-anchor="end">25%</text>
<text x="55" y="124" fill="#484f58" font-size="9" text-anchor="end">50%</text>
<text x="55" y="74" fill="#484f58" font-size="9" text-anchor="end">75%</text>
<text x="55" y="24" fill="#484f58" font-size="9" text-anchor="end">100%</text>
<text x="12" y="124" fill="#484f58" font-size="9" text-anchor="middle" transform="rotate(-90,12,124)">Relative Intensity</text>
<!-- X axis labels -->
<text x="60" y="255" fill="#484f58" font-size="9" text-anchor="middle">500</text>
<text x="180" y="255" fill="#484f58" font-size="9" text-anchor="middle">540</text>
<text x="300" y="255" fill="#484f58" font-size="9" text-anchor="middle">580</text>
<text x="420" y="255" fill="#484f58" font-size="9" text-anchor="middle">620</text>
<text x="540" y="255" fill="#484f58" font-size="9" text-anchor="middle">660</text>
<text x="660" y="255" fill="#484f58" font-size="9" text-anchor="middle">700</text>
<text x="360" y="272" fill="#484f58" font-size="9" text-anchor="middle">Wavelength (nm)</text>
</svg>
<div class="chart-note">Amber emission centered at 605nm dominant wavelength (610nm peak). The narrow spectral width (~20nm FWHM) indicates a well-defined color output typical of AlInGaP LEDs.</div>
</div>
</div>
<!-- Chart 2: IV Curve -->
<div class="section">
<h2 class="section-title">Forward Current vs. Forward Voltage</h2>
<div class="chart-wrap">
<h3>IV Characteristic — the essential curve for circuit design</h3>
<svg id="iv-chart" width="100%" height="280" viewBox="0 0 700 280">
<rect x="60" y="20" width="600" height="200" fill="#0d1117" rx="4"/>
<!-- Grid -->
<line x1="60" y1="220" x2="660" y2="220" stroke="#21262d" stroke-width="1"/>
<line x1="60" y1="20" x2="60" y2="220" stroke="#21262d" stroke-width="1"/>
<line x1="60" y1="170" x2="660" y2="170" stroke="#21262d" stroke-width="0.5" stroke-dasharray="4,4"/>
<line x1="60" y1="120" x2="660" y2="120" stroke="#21262d" stroke-width="0.5" stroke-dasharray="4,4"/>
<line x1="60" y1="70" x2="660" y2="70" stroke="#21262d" stroke-width="0.5" stroke-dasharray="4,4"/>
<line x1="60" y1="20" x2="660" y2="20" stroke="#21262d" stroke-width="0.5" stroke-dasharray="4,4"/>
<!-- Vertical grid -->
<line x1="231" y1="20" x2="231" y2="220" stroke="#21262d" stroke-width="0.5" stroke-dasharray="4,4"/>
<line x1="403" y1="20" x2="403" y2="220" stroke="#21262d" stroke-width="0.5" stroke-dasharray="4,4"/>
<line x1="574" y1="20" x2="574" y2="220" stroke="#21262d" stroke-width="0.5" stroke-dasharray="4,4"/>
<!-- IV curve (exponential characteristic) -->
<path d="M60,220 L231,220 Q300,219 345,218 Q380,216 403,210 Q425,198 440,180 Q455,155 470,120 Q485,85 500,55 Q515,30 530,20"
stroke="#FF8C00" stroke-width="2.5" fill="none"/>
<!-- Fill under curve -->
<path d="M60,220 L231,220 Q300,219 345,218 Q380,216 403,210 Q425,198 440,180 Q455,155 470,120 Q485,85 500,55 Q515,30 530,20 L530,220 Z"
fill="url(#amberGrad)" opacity="0.15"/>
<!-- Operating point marker: 2.1V, 20mA -->
<circle cx="440" cy="140" r="5" fill="#FF8C00" opacity="0.9"/>
<line x1="440" y1="140" x2="440" y2="220" stroke="#FF8C00" stroke-width="0.5" stroke-dasharray="3,3" opacity="0.5"/>
<line x1="60" y1="140" x2="440" y2="140" stroke="#FF8C00" stroke-width="0.5" stroke-dasharray="3,3" opacity="0.5"/>
<rect x="445" y="126" width="100" height="28" rx="4" fill="rgba(255,140,0,0.12)"/>
<text x="495" y="140" fill="#FF8C00" font-size="10" text-anchor="middle">Typ: 2.1V, 20mA</text>
<text x="495" y="150" fill="#8b949e" font-size="8" text-anchor="middle">Operating point</text>
<!-- Max Vf line -->
<line x1="489" y1="20" x2="489" y2="220" stroke="#f85149" stroke-width="0.5" stroke-dasharray="3,3" opacity="0.5"/>
<text x="489" y="248" fill="#f85149" font-size="9" text-anchor="middle">2.6V max</text>
<!-- Max If line -->
<line x1="60" y1="120" x2="660" y2="120" stroke="#f85149" stroke-width="0.5" stroke-dasharray="3,3" opacity="0.3"/>
<text x="100" y="114" fill="#f85149" font-size="9">25mA max</text>
<!-- Y axis labels -->
<text x="55" y="224" fill="#484f58" font-size="9" text-anchor="end">0</text>
<text x="55" y="174" fill="#484f58" font-size="9" text-anchor="end">12.5</text>
<text x="55" y="124" fill="#484f58" font-size="9" text-anchor="end">25</text>
<text x="55" y="74" fill="#484f58" font-size="9" text-anchor="end">37.5</text>
<text x="55" y="24" fill="#484f58" font-size="9" text-anchor="end">50</text>
<text x="12" y="124" fill="#484f58" font-size="9" text-anchor="middle" transform="rotate(-90,12,124)">Forward Current (mA)</text>
<!-- X axis labels -->
<text x="60" y="255" fill="#484f58" font-size="9" text-anchor="middle">0</text>
<text x="231" y="255" fill="#484f58" font-size="9" text-anchor="middle">1.0</text>
<text x="403" y="255" fill="#484f58" font-size="9" text-anchor="middle">2.0</text>
<text x="574" y="255" fill="#484f58" font-size="9" text-anchor="middle">3.0</text>
<text x="360" y="272" fill="#484f58" font-size="9" text-anchor="middle">Forward Voltage (V)</text>
</svg>
<div class="chart-note">Characteristic exponential IV curve for an AlInGaP amber LED. Near-zero current until threshold (~1.8V), then steep rise. Design point: 2.1V typical at 20mA. Never exceed 2.6V forward or 25mA continuous.</div>
</div>
</div>
<!-- Chart 3: Current Derating -->
<div class="section">
<h2 class="section-title">Forward Current Derating</h2>
<div class="chart-wrap">
<h3>Maximum Forward Current vs. Ambient Temperature</h3>
<svg id="derating-chart" width="100%" height="280" viewBox="0 0 700 280">
<rect x="60" y="20" width="600" height="200" fill="#0d1117" rx="4"/>
<!-- Grid -->
<line x1="60" y1="220" x2="660" y2="220" stroke="#21262d" stroke-width="1"/>
<line x1="60" y1="20" x2="60" y2="220" stroke="#21262d" stroke-width="1"/>
<line x1="60" y1="170" x2="660" y2="170" stroke="#21262d" stroke-width="0.5" stroke-dasharray="4,4"/>
<line x1="60" y1="120" x2="660" y2="120" stroke="#21262d" stroke-width="0.5" stroke-dasharray="4,4"/>
<line x1="60" y1="70" x2="660" y2="70" stroke="#21262d" stroke-width="0.5" stroke-dasharray="4,4"/>
<!-- Vertical grid -->
<line x1="180" y1="20" x2="180" y2="220" stroke="#21262d" stroke-width="0.5" stroke-dasharray="4,4"/>
<line x1="300" y1="20" x2="300" y2="220" stroke="#21262d" stroke-width="0.5" stroke-dasharray="4,4"/>
<line x1="420" y1="20" x2="420" y2="220" stroke="#21262d" stroke-width="0.5" stroke-dasharray="4,4"/>
<line x1="540" y1="20" x2="540" y2="220" stroke="#21262d" stroke-width="0.5" stroke-dasharray="4,4"/>
<!-- Derating curve: linear from ~30mA at 25C to ~5mA at 80C -->
<!-- x scale: 0C=60, 100C=660, so 1C = 6px -->
<!-- y scale: 0mA=220, 30mA=20, so 1mA ~= 6.67px -->
<!-- 25C -> x=210, 30mA -> y=20 -->
<!-- 80C -> x=540, 5mA -> y=187 -->
<path d="M210,20 L540,187" stroke="#FF8C00" stroke-width="2.5" fill="none"/>
<!-- Extend flat at left -->
<path d="M60,20 L210,20" stroke="#FF8C00" stroke-width="2.5" fill="none"/>
<!-- Extend to zero at right (extrapolate to ~84C) -->
<path d="M540,187 L565,220" stroke="#FF8C00" stroke-width="2.5" fill="none" stroke-dasharray="4,3"/>
<!-- Fill under curve -->
<path d="M60,20 L210,20 L540,187 L565,220 L60,220 Z" fill="url(#amberGrad)" opacity="0.12"/>
<!-- 25C marker -->
<circle cx="210" cy="20" r="4" fill="#FF8C00" opacity="0.9"/>
<text x="210" y="40" fill="#FF8C00" font-size="10" text-anchor="middle">30mA @ 25°C</text>
<!-- 80C marker -->
<circle cx="540" cy="187" r="4" fill="#FF8C00" opacity="0.9"/>
<text x="540" y="178" fill="#FF8C00" font-size="10" text-anchor="middle">5mA @ 80°C</text>
<!-- Safe region label -->
<rect x="200" y="100" width="110" height="20" rx="4" fill="rgba(63,185,80,0.12)"/>
<text x="255" y="114" fill="#3fb950" font-size="10" text-anchor="middle">Safe operating</text>
<!-- Y axis labels -->
<text x="55" y="224" fill="#484f58" font-size="9" text-anchor="end">0</text>
<text x="55" y="174" fill="#484f58" font-size="9" text-anchor="end">7.5</text>
<text x="55" y="124" fill="#484f58" font-size="9" text-anchor="end">15</text>
<text x="55" y="74" fill="#484f58" font-size="9" text-anchor="end">22.5</text>
<text x="55" y="24" fill="#484f58" font-size="9" text-anchor="end">30</text>
<text x="12" y="124" fill="#484f58" font-size="9" text-anchor="middle" transform="rotate(-90,12,124)">Max If (mA)</text>
<!-- X axis labels -->
<text x="60" y="255" fill="#484f58" font-size="9" text-anchor="middle">0</text>
<text x="210" y="255" fill="#484f58" font-size="9" text-anchor="middle">25</text>
<text x="360" y="255" fill="#484f58" font-size="9" text-anchor="middle">50</text>
<text x="540" y="255" fill="#484f58" font-size="9" text-anchor="middle">80</text>
<text x="660" y="255" fill="#484f58" font-size="9" text-anchor="middle">100</text>
<text x="360" y="272" fill="#484f58" font-size="9" text-anchor="middle">Ambient Temperature (°C)</text>
</svg>
<div class="chart-note">Maximum allowable forward current decreases linearly with temperature. At 80°C ambient, derate to only 5mA. Design margin is critical in enclosed or high-temperature applications.</div>
</div>
</div>
<!-- Chart 4: Relative Luminous Intensity vs Current -->
<div class="section">
<h2 class="section-title">Luminous Intensity vs. Forward Current</h2>
<div class="chart-wrap">
<h3>Relative Brightness (normalized at 20mA)</h3>
<svg id="brightness-current-chart" width="100%" height="280" viewBox="0 0 700 280">
<rect x="60" y="20" width="600" height="200" fill="#0d1117" rx="4"/>
<!-- Grid -->
<line x1="60" y1="220" x2="660" y2="220" stroke="#21262d" stroke-width="1"/>
<line x1="60" y1="20" x2="60" y2="220" stroke="#21262d" stroke-width="1"/>
<line x1="60" y1="170" x2="660" y2="170" stroke="#21262d" stroke-width="0.5" stroke-dasharray="4,4"/>
<line x1="60" y1="120" x2="660" y2="120" stroke="#21262d" stroke-width="0.5" stroke-dasharray="4,4"/>
<line x1="60" y1="70" x2="660" y2="70" stroke="#21262d" stroke-width="0.5" stroke-dasharray="4,4"/>
<!-- Vertical grid -->
<line x1="180" y1="20" x2="180" y2="220" stroke="#21262d" stroke-width="0.5" stroke-dasharray="4,4"/>
<line x1="300" y1="20" x2="300" y2="220" stroke="#21262d" stroke-width="0.5" stroke-dasharray="4,4"/>
<line x1="420" y1="20" x2="420" y2="220" stroke="#21262d" stroke-width="0.5" stroke-dasharray="4,4"/>
<line x1="540" y1="20" x2="540" y2="220" stroke="#21262d" stroke-width="0.5" stroke-dasharray="4,4"/>
<!-- Brightness vs current curve (sublinear / sqrt-like) -->
<!-- x: 0mA=60, 50mA=660 => 12px/mA -->
<!-- y: 0=220, 2.0=20 => 100px per 1.0 -->
<!-- Points: 0mA=0, 5mA=0.4, 10mA=0.65, 15mA=0.85, 20mA=1.0, 25mA=1.12, 30mA=1.25, 40mA=1.55, 50mA=1.8 -->
<path d="M60,220 Q120,168 180,155 Q240,135 300,120 Q360,106 420,95 Q480,78 540,64 Q600,52 660,40"
stroke="#FF8C00" stroke-width="2.5" fill="none"/>
<!-- Linear reference line (dashed) -->
<path d="M60,220 L660,20" stroke="#484f58" stroke-width="1" stroke-dasharray="5,4" opacity="0.4"/>
<text x="600" y="50" fill="#484f58" font-size="9">Linear</text>
<!-- 1.0 reference at 20mA -->
<circle cx="300" cy="120" r="5" fill="#FF8C00" opacity="0.9"/>
<line x1="60" y1="120" x2="300" y2="120" stroke="#FF8C00" stroke-width="0.5" stroke-dasharray="3,3" opacity="0.4"/>
<line x1="300" y1="120" x2="300" y2="220" stroke="#FF8C00" stroke-width="0.5" stroke-dasharray="3,3" opacity="0.4"/>
<text x="310" y="114" fill="#FF8C00" font-size="10">1.0 @ 20mA</text>
<!-- Y axis labels -->
<text x="55" y="224" fill="#484f58" font-size="9" text-anchor="end">0</text>
<text x="55" y="174" fill="#484f58" font-size="9" text-anchor="end">0.5</text>
<text x="55" y="124" fill="#484f58" font-size="9" text-anchor="end">1.0</text>
<text x="55" y="74" fill="#484f58" font-size="9" text-anchor="end">1.5</text>
<text x="55" y="24" fill="#484f58" font-size="9" text-anchor="end">2.0</text>
<text x="12" y="124" fill="#484f58" font-size="9" text-anchor="middle" transform="rotate(-90,12,124)">Relative Brightness</text>
<!-- X axis labels -->
<text x="60" y="255" fill="#484f58" font-size="9" text-anchor="middle">0</text>
<text x="180" y="255" fill="#484f58" font-size="9" text-anchor="middle">10</text>
<text x="300" y="255" fill="#484f58" font-size="9" text-anchor="middle">20</text>
<text x="420" y="255" fill="#484f58" font-size="9" text-anchor="middle">30</text>
<text x="540" y="255" fill="#484f58" font-size="9" text-anchor="middle">40</text>
<text x="660" y="255" fill="#484f58" font-size="9" text-anchor="middle">50</text>
<text x="360" y="272" fill="#484f58" font-size="9" text-anchor="middle">Forward Current (mA)</text>
</svg>
<div class="chart-note">Brightness increases sublinearly with current. Doubling the current from 20mA to 40mA yields only ~55% more light, not 100%. This means diminishing returns at higher drive currents — optimize for efficiency at or below 20mA.</div>
</div>
</div>
<!-- Chart 5: Brightness vs Temperature -->
<div class="section">
<h2 class="section-title">Luminous Intensity vs. Temperature</h2>
<div class="chart-wrap">
<h3>Relative Brightness vs. Ambient Temperature (normalized at 25°C)</h3>
<svg id="brightness-temp-chart" width="100%" height="280" viewBox="0 0 700 280">
<rect x="60" y="20" width="600" height="200" fill="#0d1117" rx="4"/>
<!-- Grid -->
<line x1="60" y1="220" x2="660" y2="220" stroke="#21262d" stroke-width="1"/>
<line x1="60" y1="20" x2="60" y2="220" stroke="#21262d" stroke-width="1"/>
<line x1="60" y1="170" x2="660" y2="170" stroke="#21262d" stroke-width="0.5" stroke-dasharray="4,4"/>
<line x1="60" y1="120" x2="660" y2="120" stroke="#21262d" stroke-width="0.5" stroke-dasharray="4,4"/>
<line x1="60" y1="70" x2="660" y2="70" stroke="#21262d" stroke-width="0.5" stroke-dasharray="4,4"/>
<!-- Vertical grid -->
<line x1="180" y1="20" x2="180" y2="220" stroke="#21262d" stroke-width="0.5" stroke-dasharray="4,4"/>
<line x1="300" y1="20" x2="300" y2="220" stroke="#21262d" stroke-width="0.5" stroke-dasharray="4,4"/>
<line x1="420" y1="20" x2="420" y2="220" stroke="#21262d" stroke-width="0.5" stroke-dasharray="4,4"/>
<line x1="540" y1="20" x2="540" y2="220" stroke="#21262d" stroke-width="0.5" stroke-dasharray="4,4"/>
<!-- Temperature range: -30C to +70C mapped to x: 60..660 => 6px/C -->
<!-- Brightness range: 0..2.0 mapped to y: 220..20 => 100px per 1.0 -->
<!-- Points: -30C=1.5, -10C=1.3, 0C=1.2, 10C=1.1, 25C=1.0, 40C=0.88, 50C=0.8, 60C=0.75, 70C=0.7 -->
<!-- -30C: x=60, y=70 | 25C: x=390, y=120 | 70C: x=660, y=150 -->
<path d="M60,70 L180,95 L240,105 L300,112 L390,120 L480,134 L540,142 L600,148 L660,150"
stroke="#FF8C00" stroke-width="2.5" fill="none"/>
<!-- 1.0 reference at 25C -->
<circle cx="390" cy="120" r="5" fill="#FF8C00" opacity="0.9"/>
<line x1="60" y1="120" x2="390" y2="120" stroke="#FF8C00" stroke-width="0.5" stroke-dasharray="3,3" opacity="0.4"/>
<line x1="390" y1="120" x2="390" y2="220" stroke="#FF8C00" stroke-width="0.5" stroke-dasharray="3,3" opacity="0.4"/>
<text x="400" y="114" fill="#FF8C00" font-size="10">1.0 @ 25°C</text>
<!-- Cold note -->
<text x="100" y="62" fill="#58a6ff" font-size="9">Brighter when cold</text>
<!-- Hot note -->
<text x="570" y="165" fill="#f85149" font-size="9">Dimmer when hot</text>
<!-- Y axis labels -->
<text x="55" y="224" fill="#484f58" font-size="9" text-anchor="end">0</text>
<text x="55" y="174" fill="#484f58" font-size="9" text-anchor="end">0.5</text>
<text x="55" y="124" fill="#484f58" font-size="9" text-anchor="end">1.0</text>
<text x="55" y="74" fill="#484f58" font-size="9" text-anchor="end">1.5</text>
<text x="55" y="24" fill="#484f58" font-size="9" text-anchor="end">2.0</text>
<text x="12" y="124" fill="#484f58" font-size="9" text-anchor="middle" transform="rotate(-90,12,124)">Relative Brightness</text>
<!-- X axis labels -->
<text x="60" y="255" fill="#484f58" font-size="9" text-anchor="middle">-30</text>
<text x="180" y="255" fill="#484f58" font-size="9" text-anchor="middle">-10</text>
<text x="300" y="255" fill="#484f58" font-size="9" text-anchor="middle">10</text>
<text x="390" y="255" fill="#484f58" font-size="9" text-anchor="middle">25</text>
<text x="540" y="255" fill="#484f58" font-size="9" text-anchor="middle">50</text>
<text x="660" y="255" fill="#484f58" font-size="9" text-anchor="middle">70</text>
<text x="360" y="272" fill="#484f58" font-size="9" text-anchor="middle">Ambient Temperature (°C)</text>
</svg>
<div class="chart-note">AlInGaP LEDs lose brightness at elevated temperatures. At 70°C, expect ~30% reduction in luminous intensity. Conversely, the LED is ~50% brighter at -30°C. Account for this in designs with wide temperature swings.</div>
</div>
</div>
<!-- Resistor Calculator -->
<div class="section">
<h2 class="section-title">LED Resistor Calculator</h2>
<div class="calc-card">
<h3>⚡ Series Resistor Selection</h3>
<div class="calc-inputs">
<div class="calc-field">
<label>Supply Voltage</label>
<input type="number" id="calc-vsupply" value="3.3" step="0.1" min="0">
<div class="unit">Volts</div>
</div>
<div class="calc-field">
<label>Desired Current</label>
<input type="number" id="calc-iled" value="20" step="1" min="0">
<div class="unit">Milliamps</div>
</div>
</div>
<div class="calc-results">
<div class="calc-result">
<div class="cr-label">Calculated Resistor</div>
<div class="cr-value" id="calc-r-exact">60.0 Ω</div>
<div class="cr-detail" id="calc-r-formula">R = (3.3V - 2.1V) / 20mA</div>
</div>
<div class="calc-result">
<div class="cr-label">Nearest E24 Value</div>
<div class="cr-value" id="calc-r-e24">62 Ω</div>
<div class="cr-detail" id="calc-r-actual">Actual If = 19.4mA</div>
</div>
<div class="calc-result">
<div class="cr-label">Resistor Power</div>
<div class="cr-value" id="calc-p-resistor">24.0 mW</div>
<div class="cr-detail" id="calc-p-r-detail">P = (V<sub>supply</sub> - V<sub>f</sub>) × I<sub>f</sub></div>
</div>
<div class="calc-result">
<div class="cr-label">LED Power</div>
<div class="cr-value" id="calc-p-led">42.0 mW</div>
<div class="cr-detail" id="calc-p-led-detail">P = V<sub>f</sub> × I<sub>f</sub> (max 78mW)</div>
</div>
</div>
<div class="calc-schematic">
<svg width="400" height="80" viewBox="0 0 400 80" style="max-width:100%">
<!-- Supply -->
<text x="20" y="38" fill="#e6edf3" font-size="11" font-family="JetBrains Mono,monospace" id="calc-svg-vsupply">3.3V</text>
<!-- Line from supply -->
<line x1="50" y1="35" x2="90" y2="35" stroke="#e6edf3" stroke-width="1.5"/>
<!-- Resistor symbol -->
<path d="M90,35 L100,25 L110,45 L120,25 L130,45 L140,25 L150,45 L160,35" stroke="#00b8b0" stroke-width="2" fill="none"/>
<text x="125" y="60" fill="#00b8b0" font-size="10" text-anchor="middle" font-family="JetBrains Mono,monospace" id="calc-svg-r">62Ω</text>
<!-- Line to LED -->
<line x1="160" y1="35" x2="210" y2="35" stroke="#e6edf3" stroke-width="1.5"/>
<!-- LED symbol (triangle + bar) -->
<polygon points="210,22 210,48 240,35" fill="none" stroke="#FF8C00" stroke-width="2"/>
<line x1="240" y1="22" x2="240" y2="48" stroke="#FF8C00" stroke-width="2"/>
<!-- Light arrows -->
<line x1="230" y1="18" x2="238" y2="10" stroke="#FF8C00" stroke-width="1"/>
<line x1="235" y1="22" x2="243" y2="14" stroke="#FF8C00" stroke-width="1"/>
<polygon points="238,10 234,13 237,14" fill="#FF8C00"/>
<polygon points="243,14 239,17 242,18" fill="#FF8C00"/>
<text x="225" y="65" fill="#FF8C00" font-size="10" text-anchor="middle" font-family="JetBrains Mono,monospace">LED</text>
<!-- Line to ground -->
<line x1="240" y1="35" x2="300" y2="35" stroke="#e6edf3" stroke-width="1.5"/>
<!-- Ground symbol -->
<line x1="300" y1="28" x2="300" y2="42" stroke="#e6edf3" stroke-width="1.5"/>
<line x1="290" y1="42" x2="310" y2="42" stroke="#e6edf3" stroke-width="1.5"/>
<line x1="294" y1="47" x2="306" y2="47" stroke="#e6edf3" stroke-width="1.2"/>
<line x1="297" y1="52" x2="303" y2="52" stroke="#e6edf3" stroke-width="0.8"/>
<text x="320" y="42" fill="#8b949e" font-size="10" font-family="JetBrains Mono,monospace">GND</text>
<!-- Current arrow -->
<text x="180" y="26" fill="#8b949e" font-size="9" text-anchor="middle" font-family="JetBrains Mono,monospace" id="calc-svg-if">20mA</text>
<line x1="168" y1="30" x2="192" y2="30" stroke="#8b949e" stroke-width="0.5"/>
<polygon points="192,30 187,27 187,33" fill="#8b949e"/>
</svg>
</div>
</div>
</div>
<!-- Environmental -->
<div class="section">
<h2 class="section-title">Environmental & Handling</h2>
<div class="env-grid">
<div class="env-card">
<div class="env-name">ESD Sensitivity</div>
<div class="env-spec">AlInGaP — ESD precautions required</div>
<div class="env-detail">Use grounded wrist straps & ESD-safe tools</div>
</div>
<div class="env-card">
<div class="env-name">Operating Temperature</div>
<div class="env-spec">Continuous operation range</div>
<div class="env-detail">−30°C to +80°C</div>
</div>
<div class="env-card">
<div class="env-name">Storage Temperature</div>
<div class="env-spec">Unbiased storage</div>
<div class="env-detail">−40°C to +85°C</div>
</div>
<div class="env-card">
<div class="env-name">Moisture Sensitivity</div>
<div class="env-spec">MSL noted in packaging</div>
<div class="env-detail">Follow J-STD-020 bake requirements</div>
</div>
</div>
</div>
<!-- Symbol, Footprint & 3D View -->
<div class="section">
<h2 class="section-title">Symbol, Footprint & 3D Model</h2>
<div class="grid-2" style="margin-bottom:12px">
<!-- Interactive SymView -->
<div class="card" style="padding:0;overflow:hidden">
<div style="font-size:12px;font-weight:500;text-transform:uppercase;letter-spacing:0.5px;color:var(--text-dim);padding:12px 16px 0">Schematic Symbol</div>
<iframe src="IN-S42ATA-symview.html" style="width:100%;height:340px;border:none;display:block" allow="fullscreen"></iframe>
</div>
<!-- Interactive FpView -->
<div class="card" style="padding:0;overflow:hidden">
<div style="font-size:12px;font-weight:500;text-transform:uppercase;letter-spacing:0.5px;color:var(--text-dim);padding:12px 16px 0">Footprint (0402)</div>
<iframe src="IN-S42ATA-fpview.html" style="width:100%;height:340px;border:none;display:block" allow="fullscreen"></iframe>
</div>
</div>
<!-- 3D Model -->
<div class="card" style="text-align:center;margin-bottom:12px">
<div style="font-size:12px;font-weight:500;text-transform:uppercase;letter-spacing:0.5px;color:var(--text-dim);margin-bottom:12px">3D Model (interactive)</div>
<canvas id="viewer3d" width="600" height="300" style="width:100%;height:300px;border-radius:4px;cursor:grab"></canvas>
<div style="font-size:10px;color:var(--text-dim);margin-top:6px">Click & drag to rotate · Scroll to zoom</div>
</div>
<!-- Download / Export Bar -->
<div class="card" style="display:flex;align-items:center;gap:10px;flex-wrap:wrap">
<span style="font-size:11px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:0.5px">Export:</span>
<a class="dl-btn" href="https://wiki-ufypy5dpx93o.adom.cloud/static/libraries/in-s42ata/IN-S42ATA.kicad_sym" download>KiCad Symbol (.kicad_sym)</a>
<a class="dl-btn" href="https://wiki-ufypy5dpx93o.adom.cloud/static/libraries/in-s42ata/IN-S42ATA.kicad_mod" download>KiCad Footprint (.kicad_mod)</a>
<a class="dl-btn" href="https://wiki-ufypy5dpx93o.adom.cloud/static/libraries/in-s42ata/IN-S42ATA.lbr" download>Fusion 360 (.lbr)</a>
<a class="dl-btn" href="https://wiki-ufypy5dpx93o.adom.cloud/static/libraries/in-s42ata/IN-S42ATA.step" download>3D Model (.step)</a>
</div>
</div>
<!-- Pricing & Availability -->
<div class="section">
<h2 class="section-title">Pricing & Availability</h2>
<div class="vendor-cards">
<div class="vendor-card recommended">
<div class="vc-name mouser">Mouser Electronics</div>
<div class="vc-price">$0.26</div>
<div class="vc-detail">7,587 in stock</div>
<a class="vc-link" href="https://www.mouser.com/ProductDetail/Inolux/IN-S42ATA?qs=qSfuJ%252Bfl%2Fd4ijVfKKelGRg%3D%3D" target="_blank">View on Mouser →</a>
</div>
<div class="vendor-card">
<div class="vc-name digikey">DigiKey</div>
<div class="vc-price">$0.26</div>
<div class="vc-detail">20,960 in stock</div>
<a class="vc-link" href="https://www.digikey.com/en/products/detail/inolux/IN-S42ATA/7604959" target="_blank">View on DigiKey →</a>
</div>
<div class="vendor-card">
<div class="vc-name jlcpcb">JLCPCB / LCSC</div>
<div class="vc-price">—</div>
<div class="vc-detail">Not listed</div>
</div>
</div>
</div>
<!-- Documents -->
<div class="section">
<h2 class="section-title">Documents</h2>
<div class="card">
<table class="detail-table">
<tr><td>Datasheet</td><td><button class="copy-btn" title="Copy link to clipboard" id="ds-copy-btn">⎘</button>
<script>document.getElementById('ds-copy-btn').addEventListener('click',function(){var t=document.createElement('textarea');t.value='http://www.inolux-corp.com/datasheet/SMDLED/Mono%20Color%20Top%20View/IN-S42AT%20Series_V1.1.pdf';document.body.appendChild(t);t.select();document.execCommand('copy');document.body.removeChild(t);this.textContent='Copied!';var b=this;setTimeout(function(){b.innerHTML='⎘'},1500)})</script> <a href="http://www.inolux-corp.com/datasheet/SMDLED/Mono%20Color%20Top%20View/IN-S42AT%20Series_V1.1.pdf" target="_blank">IN-S42AT Series V1.1 (PDF) →</a></td></tr>
<tr><td>Series</td><td>IN-S42AT</td></tr>
<tr><td>Manufacturer</td><td>Inolux Corporation</td></tr>
</table>
</div>
</div>
<!-- Molecule -->
<div class="section">
<h2 class="section-title">Molecule — Single-Passive Board</h2>
<div class="card" style="padding:0;overflow:hidden;border-radius:8px">
<div style="font-size:12px;font-weight:500;text-transform:uppercase;letter-spacing:0.5px;color:var(--text-dim);padding:12px 16px 0">Interactive 3D Board Viewer</div>
<iframe src="https://wiki-ufypy5dpx93o.adom.cloud/static/libraries/in-s42ata/tsci-viewer/molecule-viewer/index.html"
style="width:100%;height:500px;border:none;border-radius:0 0 8px 8px;display:block"
allow="fullscreen"></iframe>
</div>
<div style="font-size:11px;color:var(--text-dim);margin-top:8px;text-align:center">
Orbit: click & drag · Zoom: scroll · Inspect: click a component · X-ray: toggle in toolbar
</div>
</div>
<div class="source">
IN-S42ATA characterization · Data from Inolux IN-S42AT Series V1.1 datasheet + adom-parts-search · 2026-06-03
</div>
</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/r128/three.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/examples/js/pmrem/PMREMGenerator.js"></script>
<script>
(function() {
// ==================== 3D Viewer — IN-S42ATA (0402 LED, amber) ====================
const canvas = document.getElementById('viewer3d');
if (canvas && window.THREE) {
const scene = new THREE.Scene();
const renderer = new THREE.WebGLRenderer({ canvas, antialias: true, alpha: true, logarithmicDepthBuffer: true });
renderer.setSize(canvas.width, canvas.height);
renderer.setPixelRatio(Math.min(window.devicePixelRatio, 2));
renderer.outputEncoding = THREE.sRGBEncoding;
renderer.toneMapping = THREE.ACESFilmicToneMapping;
renderer.toneMappingExposure = 1.2;
renderer.physicallyCorrectLights = true;
canvas.style.background = 'linear-gradient(180deg, #5a6b7e 0%, #2a3340 100%)';
const camera = new THREE.PerspectiveCamera(35, canvas.width / canvas.height, 0.01, 1000);
// Procedural environment map
const pmremGen = new THREE.PMREMGenerator(renderer);
pmremGen.compileEquirectangularShader();
const envScene = new THREE.Scene();
envScene.background = new THREE.Color(0x3a4550);
const envLight1 = new THREE.DirectionalLight(0xffffff, 2);
envLight1.position.set(1, 3, 2);
envScene.add(envLight1);
const envLight2 = new THREE.DirectionalLight(0x8899bb, 1);
envLight2.position.set(-2, 1, -1);
envScene.add(envLight2);
const envRT = pmremGen.fromScene(envScene, 0.04);
scene.environment = envRT.texture;
// Studio lighting
const hemi = new THREE.HemisphereLight(0xe6edf3, 0xb3a699, 0.5);
scene.add(hemi);
const keyLight = new THREE.DirectionalLight(0xffffff, 1.5);
keyLight.position.set(2, 5, 3);
scene.add(keyLight);
const fillLight = new THREE.DirectionalLight(0x8899aa, 0.5);
fillLight.position.set(-3, 2, -2);
scene.add(fillLight);
const rimLight = new THREE.DirectionalLight(0xff8c00, 0.4);
rimLight.position.set(0, -1, 3);
scene.add(rimLight);
const S = 2.5; // Scale for tiny 0402
// PBR Materials for LED
const bodyMat = new THREE.MeshStandardMaterial({
color: 0x2a2018, metalness: 0.0, roughness: 0.4
});
const lensMat = new THREE.MeshStandardMaterial({
color: 0xFF8C00, metalness: 0.0, roughness: 0.15,
transparent: true, opacity: 0.55,
emissive: 0xFF6600, emissiveIntensity: 0.3
});
const termMat = new THREE.MeshStandardMaterial({
color: 0xc8ccd1, metalness: 1.0, roughness: 0.25,
polygonOffset: true, polygonOffsetFactor: -1, polygonOffsetUnits: -1
});
const padMat = new THREE.MeshStandardMaterial({ color: 0xc9a04c, metalness: 1.0, roughness: 0.22 });
const pcbMat = new THREE.MeshStandardMaterial({ color: 0x0a2a0a, metalness: 0.0, roughness: 0.6 });
const cathodeMat = new THREE.MeshStandardMaterial({ color: 0xFF8C00, emissive: 0xFF6600, emissiveIntensity: 0.5, metalness: 0.0, roughness: 0.5 });
// LED body: 1.0 x 0.5 x 0.45mm
const bodyW = 1.0, bodyD = 0.5, bodyH = 0.30; // base part
const lensH = 0.15; // lens on top
const termW = 0.20;
// Body base (dark substrate)
const innerW = bodyW - termW * 2 + 0.02;
const body = new THREE.Mesh(new THREE.BoxGeometry(innerW*S, bodyH*S, bodyD*S), bodyMat);
body.position.y = bodyH*S/2;
scene.add(body);
// Amber lens on top
const lens = new THREE.Mesh(new THREE.BoxGeometry(bodyW*0.85*S, lensH*S, bodyD*0.85*S), lensMat);
lens.position.y = (bodyH + lensH/2)*S;
scene.add(lens);
// Terminals
function makeTerminal(xSign) {
const group = new THREE.Group();
const front = new THREE.Mesh(new THREE.BoxGeometry(termW*S, bodyH*S, bodyD*S*0.99), termMat);
front.position.set(xSign*(bodyW/2 - termW/2)*S, bodyH*S/2, 0);
group.add(front);
const bot = new THREE.Mesh(new THREE.BoxGeometry((termW+0.03)*S, 0.04*S, bodyD*S*0.99), termMat);
bot.position.set(xSign*(bodyW/2 - termW/2)*S, 0.02*S, 0);
group.add(bot);
return group;
}
scene.add(makeTerminal(-1)); // anode
scene.add(makeTerminal(1)); // cathode
// Cathode mark (small line on top of body, cathode side)
const cathMark = new THREE.Mesh(new THREE.BoxGeometry(0.02*S, 0.02*S, bodyD*0.7*S), cathodeMat);
cathMark.position.set(0.25*S, (bodyH + lensH + 0.02)*S, 0);
scene.add(cathMark);
// PCB
const pcb = new THREE.Mesh(new THREE.BoxGeometry(10*S, 0.08*S, 8*S), pcbMat);
pcb.position.y = -0.04*S;
scene.add(pcb);
// Gold pads
const pad1 = new THREE.Mesh(new THREE.BoxGeometry(0.4*S, 0.025*S, 0.6*S), padMat);
pad1.position.set(-0.3*S, 0.005*S, 0);
scene.add(pad1);
const pad2 = new THREE.Mesh(new THREE.BoxGeometry(0.4*S, 0.025*S, 0.6*S), padMat);
pad2.position.set(0.3*S, 0.005*S, 0);
scene.add(pad2);
// Grid
const gridMat2 = new THREE.LineBasicMaterial({ color: 0x0d3d0d, transparent: true, opacity: 0.3 });
for (let i = -8; i <= 8; i++) {
const pts1 = [new THREE.Vector3(i*0.4*S, 0.045*S, -4*S), new THREE.Vector3(i*0.4*S, 0.045*S, 4*S)];
scene.add(new THREE.Line(new THREE.BufferGeometry().setFromPoints(pts1), gridMat2));
const pts2 = [new THREE.Vector3(-4*S, 0.045*S, i*0.4*S), new THREE.Vector3(4*S, 0.045*S, i*0.4*S)];
scene.add(new THREE.Line(new THREE.BufferGeometry().setFromPoints(pts2), gridMat2));
}
// Camera orbit
let isDragging = false, prevX = 0, prevY = 0;
let theta = Math.PI/4, phi = Math.PI/5.5, radius = 5.0;
const target = new THREE.Vector3(0, 0.4, 0);
function updateCamera() {
camera.position.x = radius * Math.sin(theta) * Math.cos(phi);
camera.position.y = radius * Math.sin(phi) + target.y;
camera.position.z = radius * Math.cos(theta) * Math.cos(phi);
camera.lookAt(target);
}
updateCamera();
canvas.addEventListener('mousedown', function(e) { isDragging = true; prevX = e.clientX; prevY = e.clientY; canvas.style.cursor = 'grabbing'; });
window.addEventListener('mouseup', function() { isDragging = false; canvas.style.cursor = 'grab'; });
canvas.addEventListener('mousemove', function(e) {
if (!isDragging) return;
theta -= (e.clientX - prevX) * 0.008;
phi = Math.max(0.05, Math.min(Math.PI/2.2, phi + (e.clientY - prevY) * 0.008));
prevX = e.clientX; prevY = e.clientY;
updateCamera();
});
canvas.addEventListener('wheel', function(e) {
e.preventDefault();
radius = Math.max(2, Math.min(12, radius + e.deltaY * 0.004));
updateCamera();
}, { passive: false });
function animate() { requestAnimationFrame(animate); renderer.render(scene, camera); }
animate();
}
// ==================== Chart Tooltip System ====================
function setupChartTooltip(svgId, dataPoints, color, formatX, formatY) {
var svg = document.getElementById(svgId);
if (!svg) return;
var ns = 'http://www.w3.org/2000/svg';
var dot = document.createElementNS(ns, 'circle');
dot.setAttribute('r', '5');
dot.setAttribute('fill', color);
dot.setAttribute('stroke', '#0d1117');
dot.setAttribute('stroke-width', '2');
dot.style.display = 'none';
dot.style.pointerEvents = 'none';
svg.appendChild(dot);
var tipGroup = document.createElementNS(ns, 'g');
tipGroup.style.display = 'none';
tipGroup.style.pointerEvents = 'none';
var tipBg = document.createElementNS(ns, 'rect');
tipBg.setAttribute('rx', '4');
tipBg.setAttribute('fill', '#161b22');
tipBg.setAttribute('stroke', '#30363d');
tipBg.setAttribute('stroke-width', '1');
var tipLine1 = document.createElementNS(ns, 'text');
tipLine1.setAttribute('font-family', 'JetBrains Mono, monospace');
tipLine1.setAttribute('font-size', '10');
tipLine1.setAttribute('fill', '#e6edf3');
var tipLine2 = document.createElementNS(ns, 'text');
tipLine2.setAttribute('font-family', 'JetBrains Mono, monospace');
tipLine2.setAttribute('font-size', '10');
tipLine2.setAttribute('fill', color);
tipGroup.appendChild(tipBg);
tipGroup.appendChild(tipLine1);
tipGroup.appendChild(tipLine2);
svg.appendChild(tipGroup);
var vLine = document.createElementNS(ns, 'line');
vLine.setAttribute('stroke', color);
vLine.setAttribute('stroke-width', '0.5');
vLine.setAttribute('stroke-dasharray', '3,3');
vLine.setAttribute('opacity', '0.5');
vLine.style.display = 'none';
vLine.style.pointerEvents = 'none';
svg.appendChild(vLine);
function lerp(pts, svgX) {
if (svgX <= pts[0].sx) return pts[0];
if (svgX >= pts[pts.length-1].sx) return pts[pts.length-1];
for (var i = 0; i < pts.length - 1; i++) {
if (svgX >= pts[i].sx && svgX <= pts[i+1].sx) {
var t = (svgX - pts[i].sx) / (pts[i+1].sx - pts[i].sx);
return {
sx: svgX,
sy: pts[i].sy + t * (pts[i+1].sy - pts[i].sy),
vx: pts[i].vx + t * (pts[i+1].vx - pts[i].vx),
vy: pts[i].vy + t * (pts[i+1].vy - pts[i].vy),
};
}
}
return pts[0];
}
svg.addEventListener('mousemove', function(e) {
var pt = svg.createSVGPoint();
pt.x = e.clientX;
pt.y = e.clientY;
var svgPt = pt.matrixTransform(svg.getScreenCTM().inverse());
var minX = dataPoints[0].sx;
var maxX = dataPoints[dataPoints.length-1].sx;
if (svgPt.x < minX - 10 || svgPt.x > maxX + 10) {
dot.style.display = 'none';
tipGroup.style.display = 'none';
vLine.style.display = 'none';
return;
}
var p = lerp(dataPoints, svgPt.x);
dot.setAttribute('cx', p.sx);
dot.setAttribute('cy', p.sy);
dot.style.display = '';
vLine.setAttribute('x1', p.sx);
vLine.setAttribute('y1', p.sy);
vLine.setAttribute('x2', p.sx);
vLine.setAttribute('y2', 220);
vLine.style.display = '';
var xLabel = formatX(p.vx);
var yLabel = formatY(p.vy);
tipLine1.textContent = xLabel;
tipLine2.textContent = yLabel;
var tipX = p.sx + 12;
var tipY = p.sy - 28;
var boxW = Math.max(xLabel.length, yLabel.length) * 7 + 16;
var boxH = 32;
var adjustedX = tipX + boxW > 660 ? p.sx - boxW - 12 : tipX;
var adjustedY = tipY < 10 ? p.sy + 12 : tipY;
tipBg.setAttribute('x', adjustedX);
tipBg.setAttribute('y', adjustedY);
tipBg.setAttribute('width', boxW);
tipBg.setAttribute('height', boxH);
tipLine1.setAttribute('x', adjustedX + 8);
tipLine1.setAttribute('y', adjustedY + 13);
tipLine2.setAttribute('x', adjustedX + 8);
tipLine2.setAttribute('y', adjustedY + 26);
tipGroup.style.display = '';
});
svg.addEventListener('mouseleave', function() {
dot.style.display = 'none';
tipGroup.style.display = 'none';
vLine.style.display = 'none';
});
}
// ==================== Chart 1: Spectral Distribution ====================
// x: wavelength 500-700nm mapped to SVG 60-660 (3px/nm)
// y: relative intensity 0-100% mapped to SVG 220-20
var spectralData = [
{sx:60, sy:220, vx:500, vy:0},
{sx:180, sy:219, vx:540, vy:0.5},
{sx:240, sy:218, vx:560, vy:1},
{sx:285, sy:210, vx:575, vy:5},
{sx:300, sy:205, vx:580, vy:7.5},
{sx:315, sy:190, vx:585, vy:15},
{sx:330, sy:160, vx:590, vy:30},
{sx:345, sy:120, vx:595, vy:50},
{sx:352, sy:90, vx:597, vy:65},
{sx:358, sy:50, vx:599, vy:85},
{sx:363, sy:28, vx:601, vy:96},
{sx:369, sy:22, vx:605, vy:100},
{sx:375, sy:28, vx:607, vy:96},
{sx:381, sy:50, vx:609, vy:85},
{sx:387, sy:90, vx:611, vy:65},
{sx:394, sy:120, vx:613, vy:50},
{sx:408, sy:160, vx:618, vy:30},
{sx:423, sy:190, vx:623, vy:15},
{sx:438, sy:205, vx:628, vy:7.5},
{sx:453, sy:210, vx:633, vy:5},
{sx:498, sy:218, vx:648, vy:1},
{sx:540, sy:219, vx:660, vy:0.5},
{sx:660, sy:220, vx:700, vy:0},
];
setupChartTooltip('spectral-chart', spectralData, '#FF8C00',
function(x) { return x.toFixed(0) + ' nm'; },
function(y) { return 'Intensity: ' + y.toFixed(1) + '%'; }
);
// ==================== Chart 2: IV Curve ====================
// x: Vf 0-3.5V mapped to SVG 60-660 (171.4px/V)
// y: If 0-50mA mapped to SVG 220-20 (4px/mA)
var ivData = [
{sx:60, sy:220, vx:0, vy:0},
{sx:231, sy:220, vx:1.0, vy:0},
{sx:300, sy:219, vx:1.4, vy:0.25},
{sx:345, sy:218, vx:1.65, vy:0.5},
{sx:370, sy:216, vx:1.8, vy:1},
{sx:380, sy:214, vx:1.85, vy:1.5},
{sx:390, sy:212, vx:1.9, vy:2},
{sx:403, sy:210, vx:2.0, vy:2.5},
{sx:410, sy:205, vx:2.04, vy:3.75},
{sx:420, sy:198, vx:2.06, vy:5.5},
{sx:430, sy:180, vx:2.08, vy:10},
{sx:440, sy:140, vx:2.1, vy:20},
{sx:460, sy:120, vx:2.2, vy:25},
{sx:470, sy:100, vx:2.3, vy:30},
{sx:485, sy:80, vx:2.4, vy:35},
{sx:500, sy:40, vx:2.55, vy:45},
{sx:510, sy:20, vx:2.6, vy:50},
];
setupChartTooltip('iv-chart', ivData, '#FF8C00',
function(x) { return 'Vf = ' + x.toFixed(2) + ' V'; },
function(y) { return 'If = ' + y.toFixed(1) + ' mA'; }
);
// ==================== Chart 3: Current Derating ====================
// x: temp 0-100C mapped to SVG 60-660 (6px/C)
// y: max If 0-30mA mapped to SVG 220-20 (6.67px/mA)
var deratingData = [
{sx:60, sy:20, vx:0, vy:30},
{sx:210, sy:20, vx:25, vy:30},
{sx:270, sy:53, vx:35, vy:25.5},
{sx:330, sy:87, vx:45, vy:20},
{sx:390, sy:120, vx:55, vy:15},
{sx:450, sy:153, vx:65, vy:10},
{sx:540, sy:187, vx:80, vy:5},
{sx:565, sy:220, vx:84, vy:0},
];
setupChartTooltip('derating-chart', deratingData, '#FF8C00',
function(x) { return x.toFixed(0) + '°C'; },
function(y) { return 'Max If = ' + y.toFixed(1) + ' mA'; }
);
// ==================== Chart 4: Brightness vs Current ====================
// x: If 0-50mA mapped to SVG 60-660 (12px/mA)
// y: relative 0-2.0 mapped to SVG 220-20 (100px per 1.0)
var brightCurrentData = [
{sx:60, sy:220, vx:0, vy:0},
{sx:120, sy:168, vx:5, vy:0.52},
{sx:180, sy:148, vx:10, vy:0.72},
{sx:240, sy:135, vx:15, vy:0.85},
{sx:300, sy:120, vx:20, vy:1.0},
{sx:360, sy:108, vx:25, vy:1.12},
{sx:420, sy:95, vx:30, vy:1.25},
{sx:540, sy:69, vx:40, vy:1.51},
{sx:660, sy:40, vx:50, vy:1.80},
];
setupChartTooltip('brightness-current-chart', brightCurrentData, '#FF8C00',
function(x) { return 'If = ' + x.toFixed(0) + ' mA'; },
function(y) { return 'Brightness: ' + y.toFixed(2) + 'x'; }
);
// ==================== Chart 5: Brightness vs Temperature ====================
// x: temp -30 to +70C mapped to SVG 60-660 (6px/C)
// y: relative 0-2.0 mapped to SVG 220-20 (100px per 1.0)
var brightTempData = [
{sx:60, sy:70, vx:-30, vy:1.50},
{sx:180, sy:95, vx:-10, vy:1.25},
{sx:240, sy:105, vx:0, vy:1.15},
{sx:300, sy:112, vx:10, vy:1.08},
{sx:390, sy:120, vx:25, vy:1.00},
{sx:480, sy:134, vx:40, vy:0.86},
{sx:540, sy:142, vx:50, vy:0.78},
{sx:600, sy:148, vx:60, vy:0.72},
{sx:660, sy:150, vx:70, vy:0.70},
];
setupChartTooltip('brightness-temp-chart', brightTempData, '#FF8C00',
function(x) { return x.toFixed(0) + '°C'; },
function(y) { return 'Brightness: ' + y.toFixed(2) + 'x'; }
);
// ==================== Resistor Calculator ====================
var VF_TYP = 2.1;
// E24 standard values (decade 10-100)
var E24 = [10,11,12,13,15,16,18,20,22,24,27,30,33,36,39,43,47,51,56,62,68,75,82,91];
function nearestE24(val) {
if (val <= 0) return 0;
// Find the decade
var decade = 1;
while (val >= 100) { val /= 10; decade *= 10; }
while (val < 10) { val *= 10; decade /= 10; }
// Find closest E24 value
var best = E24[0], bestDist = Math.abs(val - E24[0]);
for (var i = 1; i < E24.length; i++) {
var d = Math.abs(val - E24[i]);
if (d < bestDist) { bestDist = d; best = E24[i]; }
}
return best * decade;
}
function formatResistance(r) {
if (r >= 1e6) return (r/1e6).toFixed(1) + ' MΩ';
if (r >= 1e3) return (r/1e3).toFixed(0) + ' kΩ';
if (r >= 100) return r.toFixed(0) + ' Ω';
if (r >= 10) return r.toFixed(1) + ' Ω';
return r.toFixed(2) + ' Ω';
}
function updateCalculator() {
var vSupply = parseFloat(document.getElementById('calc-vsupply').value) || 0;
var iLed = parseFloat(document.getElementById('calc-iled').value) || 0;
var iLedA = iLed / 1000; // convert to amps
var vDrop = vSupply - VF_TYP;
var rExact = vDrop > 0 && iLedA > 0 ? vDrop / iLedA : 0;
var rE24 = nearestE24(rExact);
var iActual = rE24 > 0 ? vDrop / rE24 : 0;
var pResistor = vDrop * iActual;
var pLed = VF_TYP * iActual;
// Update display
document.getElementById('calc-r-exact').innerHTML = rExact > 0 ? formatResistance(rExact) : '—';
document.getElementById('calc-r-formula').textContent = 'R = (' + vSupply.toFixed(1) + 'V - ' + VF_TYP + 'V) / ' + iLed.toFixed(0) + 'mA';
document.getElementById('calc-r-e24').innerHTML = rE24 > 0 ? formatResistance(rE24) : '—';
document.getElementById('calc-r-actual').textContent = iActual > 0 ? 'Actual If = ' + (iActual * 1000).toFixed(1) + 'mA' : '';
document.getElementById('calc-p-resistor').textContent = pResistor > 0 ? (pResistor * 1000).toFixed(1) + ' mW' : '—';
document.getElementById('calc-p-led').textContent = pLed > 0 ? (pLed * 1000).toFixed(1) + ' mW' : '—';
// Update schematic SVG labels
var svgVs = document.getElementById('calc-svg-vsupply');
if (svgVs) svgVs.textContent = vSupply.toFixed(1) + 'V';
var svgR = document.getElementById('calc-svg-r');
if (svgR) svgR.textContent = rE24 > 0 ? formatResistance(rE24) : '—';
var svgIf = document.getElementById('calc-svg-if');
if (svgIf) svgIf.textContent = iActual > 0 ? (iActual * 1000).toFixed(1) + 'mA' : '';
// Warning if LED power exceeds max
var pLedEl = document.getElementById('calc-p-led');
if (pLed * 1000 > 78) {
pLedEl.style.color = '#f85149';
} else {
pLedEl.style.color = '';
}
// Warning if insufficient voltage
var rExactEl = document.getElementById('calc-r-exact');
if (vDrop <= 0) {
rExactEl.innerHTML = '<span style="color:#f85149">V<sub>supply</sub> too low</span>';
}
}
document.getElementById('calc-vsupply').addEventListener('input', updateCalculator);
document.getElementById('calc-iled').addEventListener('input', updateCalculator);
// Initial calculation
updateCalculator();
})();
</script>
</div>
</body>
</html>