CQ03WAF1002T5E is the 10 kΩ member of Royalohm’s (UNI-ROYAL) CQ automotive thick film chip resistor series in the 0603 size (CQ03) — a 1.60 × 0.80 mm body 0.45 mm thick, with a nickel barrier under the lead-free tin termination.p.1 It is the automotive (CQ) series: the doc claims compliance with the relevant provisions of AEC-Q200 and backs it with AEC-Q200-referenced test rows, plus an anti-sulfurized construction proven over 1,000 h in 3–5 ppm H2S.p.1, p.2 Tolerance is ±1 %; the ordering code decodes as 1002 = 100 × 102 Ω (1st–3rd digits significant, 4th = zeros), and T5E means tape & reel, 5,000 pcs, lead-free.p.2
Design against 1/10 W (100 mW) at 70 °C — derating runs linearly to zero at +155 °C — and keep continuous voltage at or below 75 V; 150 V is the overload limit, not a working figure.p.1 TCR is ±100 ppm/°C per the CQ02–CQ12 R > 10 Ω bracket.p.2 Under the AEC-Q200-referenced stresses the allowed drift is tight: ±(1.0 % + 0.05 Ω) after short-time overload or 1,000 h biased humidity, ±(1.0 % + 0.1 Ω) after 1,000 h operational life at 125 °C.p.2
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