1 Ω Automotive Resistor 0402 - Royalohm CQ02WGF100KTCE

Royalohm CQ02WGF100KTCE: 0402 Automotive Thick Film Resistor, 1 Ω ±1%, 1/16 W. 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

Notes for designers

CQ02WGF100KTCE is the 1 Ω member of Royalohm’s (UNI-ROYAL) CQ automotive thick film chip resistor series in the 0402 size (CQ02), a 1.00 × 0.50 mm body 0.35 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 100K = 100 × 10−2 Ω (letter multiplier K = 10−2), and TCE means tape & reel, 10,000 pcs, lead-free. (p.2)

Design against 1/16 W (62.5 mW) at 70 °C, derating runs linearly to zero at +155 °C, and keep continuous voltage at or below 50 V; 100 V is the overload limit, not a working figure. (p.1) TCR is ±200 ppm/°C per the CQ02-CQ12 1-10 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)

Footprint

The datasheet has no land pattern, so the pads are the IPC-7351 nominal pattern (KiCad's standard Resistor_SMD:R_0402_1005Metric), replacing pads that were off it by up to 0.14 mm.

Source: IPC-7351 nominal (no land pattern in the datasheet): KiCad 10 Resistor_SMD:R_0402_1005Metric pads.

Corners: KiCad roundrects with the radius held to 0.25 x the smaller pad side and no more than 0.1 mm (IPC-7351C favours rounded corners for paste release); copper area within 2.48 % of a square-cornered pad.

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, CQ02WGF100KTCE.kicad_sym (the one in the Symbol & Footprint panel), is the plain standard symbol. CQ02WGF100KTCE-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

Downloads

Provenance

• Datasheet: Automotive Thick Film Chip Resistors - CQ, revised No printed revision on either page; footers carry only full-catalog page numbers 52/53. PDF file metadata (NOT printed in doc): Adobe InDesign CC 14.0, CreationDate 2019-03-21, ModDate 2022-05-02, reported as metadata only, not used as a revision., UNI-ROYAL (厚聲集團 Hou Sheng group) / ROYALOHM, www.royalohm.com (both logos on both page headers). Manufacturer copy. md5 c0a124b7923e77ea3cfb7e70e0d618d4
• Footprint: IPC-7351 nominal (no land pattern in the datasheet): KiCad 10 Resistor_SMD:R_0402_1005Metric pads. Pads set to the IPC-7351 nominal pattern 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).

More

• Datasheet pages: the 2 datasheet pages as images.
• Assembly animation: the part dropping onto its pads, and Adom's pick-and-place picking it from tape.