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Amber SMD LED 0402 - Inolux IN-S42ATA

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0402 SMD Amber LED · 2.1 V drop · 25 mA max

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in-s42ata / README.md
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John Lauer Pads: square corners, as the datasheet draws them (no added rounding); viewers, lbr, insertion GLB, hero rebuilt from t… db31fc9 17d ago

Amber SMD LED 0402 - Inolux IN-S42ATA

Inolux Corporation IN-S42ATA: 0402 SMD Amber LED, 2.1 V drop, 25 mA max. An Adom Basic Part: Adom keeps it on reels for its pick-and-place line, so boards built with it draw on Adom stock.

Key specs

Spec Datasheet
0402 top-view SMD LED in a clear-lens, PCB-type moulded package, 1.0 × 0.5 × 0.45 mm p.1, p.8
AlInGaP amber emitter, dominant wavelength 605 nm, peak wavelength 610 nm p.3, p.7
Forward voltage 2.1 V typ (2.6 V max) at the 20 mA test current p.3
Luminous intensity 145 mcd typ at 20 mA (electrical-characteristics table) p.3
Wide 130° viewing angle (2θ1/2) p.3
25 mA max continuous forward current; 100 mA peak at 1/10 duty, 0.1 ms pulse p.2
5 V max reverse voltage; 78 mW max power dissipation p.2
Operating −30 to +80 °C, storage −40 to +85 °C p.2
Moisture sensitive and ESD sensitive (AlInGaP), ships dry-packed in a sealed moisture-barrier anti-static bag p.2, p.11
Supplied on tape and reel, 5000 pcs per reel p.9

Notes for designers

IN-S42ATA is the amber member of Inolux's IN-S42AT series: a low-profile 0402 top-view indicator LED in a clear, PCB-type moulded package. (p.1) It uses the same AlInGaP die family as the red and yellow variants (p.7) and sits at a dominant wavelength of 605 nm, a true amber, one step short of red. (p.3)

Budget 2.1 V across it at the 20 mA test point and the electrical table returns 145 mcd. (p.3) Drive it through a current-limiting resistor rather than straight off a rail, the datasheet says so explicitly (p.12), and keep continuous current at or below 25 mA. (p.2) At 3.3 V that is a (3.3 − 2.1) / 0.02 = 60 Ω resistor for the full 20 mA, and the drop is identical to the red variant's, so amber and red status lights can share one resistor value. (p.3)

Two caveats. The 130° viewing angle (p.3) makes this a wide-angle panel indicator, not a directional source, and reverse voltage is rated to only 5 V. (p.2) One doc quirk to know: the ordering table lists 90 mcd typical where the electrical table says 145 mcd (p.7, p.3), this page quotes the electrical-characteristics value.

Footprint

Redrawn from the datasheet land pattern (the previous pads were off by up to 0.2 mm).

Source: Land pattern from Inolux IN-S42AT series datasheet, p.1 (Recommended Solder Pattern).

mm Datasheet KiCad standard (LED_0402_1005Metric) Previous This page
Pad length (along the part) 0.4 0.59 0.6 0.4
Pad width 0.6 0.64 0.5 0.6
Gap between pads 0.6 0.38 0.4 0.6
Centre to centre 1 0.97 1 1
Overall 1.4 1.56 1.6 1.4
Corner radius not specified 0.1475 (ratio 0.25) 0.125 (ratio 0.25) square (as drawn)
Corners: square, as the datasheet draws them. The datasheet does not call for rounded corners, so the footprint does not add any.

Polarity: pad 1 = K (cathode, -X), pad 2 = A, matching the symbol (K = pin 1, A = pin 2) and the datasheet's cathode mark; the silkscreen bracket marks the cathode end.

Chip outline

The part's 3D outline in the standard pose (pad 1 toward the viewer), drawn from the STEP by Adom's OpenCascade service; the part number sits where the laser-etched mark is on the 3D model and reads the same way.

Symbol options

The default symbol, IN-S42ATA.kicad_sym (the one in the Symbol & Footprint panel), is the plain standard symbol. IN-S42ATA-outline.kicad_sym is the same symbol with the part's 3D chip outline drawn beside it, its part number placed and reading as on the 3D model.

Ordering
MPN IN-S42ATA
Manufacturer Inolux Corporation
Adom stock Adom Basic Part, stocked on reels for Adom's pick-and-place line; reel counts on pnp-inventory
Other sources adom-parts-search compares Mouser, DigiKey and JLCPCB

Downloads

File What it is
IN-S42ATA.kicad_sym KiCad symbol (standard symbol, the page default)
IN-S42ATA-outline.kicad_sym KiCad symbol with the 3D chip outline
IN-S42ATA.kicad_mod KiCad footprint (datasheet land pattern)
IN-S42ATA.step 3D STEP with the part number laser-etched (default)
IN-S42ATA-uncoloured.step 3D STEP before the colour and etch passes (the bare KiCad model)
IN-S42ATA.glb 3D GLB of the etched model (board use)
IN-S42ATA.lbr Fusion 360 / EAGLE library
IN-S42ATA.adom-lbr.json adom-lbr part (converts to Altium, KiCad, EAGLE)
IN-S42ATA-datasheet.pdf Datasheet (release asset)

Provenance

  • Datasheet: IN-S42AT series, Top View SMD LED 0402 PCB Type, V1.1 revised V1.1, April 25, 2017 (Format Update); V1.0 initial release 02-07-2017, Inolux Corporation. Manufacturer copy. md5 0bfcecda84d3ef15fc6776f3c4296d8c
  • Footprint: Land pattern from Inolux IN-S42AT series datasheet, p.1 (Recommended Solder Pattern). Pads redrawn on 2026-10-03.
  • 3D model and symbol: unchanged by the footprint pass; the etched STEP adds a flat virtual part-number mark (an identification aid, not the maker's marking).
  • Earlier passes: provenance/ and CHANGES.md.

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