What risks should I check before replacing 0402WGF390KTCE?

The main risk is a mismatch in the Temperature Coefficient of Resistance (TCR), as it's not specified for the target part. Ensure the candidate's TCR (e.g., ±200 ppm/°C) is acceptable for your circuit's stability.

0402WGF390KTCE Alternatives, Datasheet & Cross Reference | UNI-ROYAL

Find verified substitutes for the UNI-ROYAL 0402WGF390KTCE, a 3.9Ω 1% 0.0625W 0402 chip resistor. Review pin-compatible and parametric alternatives from major manufacturers.

AI replacement insight

Electrical riskmedium

TCR mismatch can affect circuit stability in precision or wide-temperature applications.

Package risklow

Candidates share the same standard 0402 package.

Can it be replaced directly?

Direct replacement for 0402WGF390KTCE should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

Yageo RC0402FR-073R9L is the recommended path, offering a direct parametric match. Engineering review of its TCR is necessary.

Main risk

The primary risk is the unknown Temperature Coefficient of Resistance (TCR) of the original part, which could impact circuit performance over temperature.

Recommended alternatives

Strong alternative with matching resistance, tolerance, power, and package. TCR requires verification.

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Alternative comparison matrix

Feature / factor	0402WGF390KTCE	RC0402FR-073R9L	FRC0402F3R90TS	Compatibility / risk
Resistance	3.9 Ω	3.9 Ω	3.9 Ω	3.9 Ω — Exact match.; FRC0402F3R90TS: Exact match.
Tolerance	1%	1%	1%	1% — Exact match.; FRC0402F3R90TS: Exact match.
Power	0.0625 W	0.0625 W	0.0625 W	0.0625 W — Matches target. Note: Does not meet 1.5x safety factor rule.; FRC0402F3R90TS: Matches target rating.
Package	0402	0402	-	0402 — Matches package code.
Tcr	Unknown	±200 ppm/°C	±400 ppm/°C	±200 ppm/°C / ±400 ppm/°C — Target TCR is not specified, review required.; FRC0402F3R90TS: Likely weaker than target.

Application & sourcing insights

Questions & answers

Verified drop-in options for 0402WGF390KTCE are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.