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CQ03WAF1001T5E — 1kΩ

Royalohm · Thick Film Chip Resistor · General Purpose
0603 Royalohm CQ03WAF RoHS Thick Film
Resistance
1kΩ
±1%
Power Rating
100mW
1/10W @ 70°C
Tolerance
±1%
F grade
TCR
±100
ppm/°C
Max Voltage
75V
working voltage
Mouser
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Electrical Characteristics

Resistance1kΩ ±1%
Power Rating100mW (1/10W)
Derate Above70°C → 0W at 155°C
Max Working Voltage75V
Max Overload Voltage150V
Rated Current1A
TCR±100 ppm/°C
Insulation Resistance≥1GΩ @ 100V
Dielectric Withstanding300V

Operating Conditions

Operating Temp−55°C to +155°C
Power Derating100% to 70°C, 0% at 155°C
Solder CompatibilitySn96.5/Ag3.0/Cu0.5
Solderability Test245±3°C, 2±0.5s
Mass∼0.005g

Package & Dimensions

Top View 1.60 ± 0.10 0.80 ± 0.10 C: 0.30±0.20 Side View 0.45 ± 0.10 0603 (1608 metric) Mass: ~0.005g

Recommended Land Pattern

Pad Width (a)0.70–0.90mm
Overall Span (b)2.00–2.20mm
Pad Height (c)0.80–1.00mm
Solder Paste Thickness100–130 µm

Power Derating

Power Derating vs. Ambient Temperature (0603 — 100mW)

25% 50% 75% 100% -55°C 0°C 25°C 70°C 100°C 155°C 70°C / 100% 155°C / 0% Rated Power (%) Ambient Temperature 0%
Full rated power (100mW) up to 70°C ambient. Above 70°C, derate linearly to zero at 155°C. Formula: P = 100mW × (155 − Tamb) / 85 for T > 70°C.

Reflow Soldering Profile

Lead-Free Reflow Profile (CQ03WAF Series)

Pre-heat Peak zone 150°C 220°C 255°C 260°C limit 60–120s preheat 60–90s >220°C 0s ~50s ~170s ~220s ~260s ~360s Standard Limit
PhaseStandardLimit
Ramp Up3°C/s maxSame
Pre-heat150°C, 60–120sSame
Reflow Zone190–220°C60–90s above 220°C
Peak Temperature255°C, ≤20s260°C max
Ramp Down6°C/s maxSame

Environmental & Reliability

Short Time Overload
ΔR ≤ ±(1.0% + 0.05Ω)
2.5× rated voltage, 5s
Load Life
ΔR ≤ ±(1.0% + 0.1Ω)
1000h @ 70°C, 1.5h ON / 0.5h OFF
Biased Humidity
ΔR ≤ ±(1.0% + 0.05Ω)
85°C, 85% RH, 1000h, 10% rated power
Solder Heat
ΔR ≤ ±(1.0% + 0.05Ω)
260±5°C, 10±1s
Solderability
≥95% wetting
245±3°C, 2±0.5s, Sn96.5/Ag3.0/Cu0.5
Board Flex / Bending
ΔR ≤ ±(1.0% + 0.05Ω)
3mm deflection
Rapid Temp Change
ΔR ≤ ±(0.5% + 0.05Ω)
−55°C / +155°C, 100 cycles
Anti-Sulfurized (H₂S)
ΔR ≤ ±(1.0% + 0.1Ω)
H₂S 3–5 ppm, 50 ± 2°C, 91–93% RH, 1000h
Anti-Sulfurized (ASTM B-809-95)
ΔR ≤ ±(1% + 0.05Ω)
Sulfur saturated vapor, 50 ± 2°C, 85–90% RH, 1000h

Symbol, Footprint & 3D Model

Schematic Symbol
Footprint (0603) — with solder jetting layout
3D Model (interactive)
Click & drag to rotate · Scroll to zoom
Export: KiCad Symbol (.kicad_sym) KiCad Footprint (.kicad_mod) Fusion 360 (.lbr) 3D Model (.step)

Pricing & Availability

Mouser Electronics
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PN: CQ03WAF1001T5E
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DigiKey
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JLCPCB / LCSC
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Documents

Datasheet Royalohm 0603WAJ Datasheet (PDF) →
SeriesCQ03WAF
ManufacturerRoyalohm
Inventory SourceAdom Parts Inventory →
CQ03WAF1001T5E characterization · Data from Royalohm datasheet (CQ03WAF series) + adom-parts-search · 2026-06-05