Is there a pin-compatible replacement for NQ01WMF4021TEE?

No pin-compatible (0201 package) replacement with matching key parameters has been confirmed. Candidates in larger packages exist but require PCB changes and lack automotive qualification.

What risks should I check before replacing NQ01WMF4021TEE?

Key risks are: 1) Package mismatch requiring PCB redesign. 2) Lack of AEC-Q200 qualification, unsuitable for automotive use. 3) Absence of anti-sulfurization, reducing reliability.

NQ01WMF4021TEE Alternatives, Datasheet & Cross Reference | UNI-ROYAL

NQ01WMF4021TEE is a high-reliability AEC-Q200 qualified 0201 chip resistor from UNI-ROYAL, featuring 4.02kΩ resistance and anti-sulfurization. Finding a direct replacement requires matching its package and automotive grade.

AI replacement insight

Package riskhigh

No candidates match the 0201 package, requiring PCB redesign.

Sourcing riskhigh

AEC-Q200 and anti-sulfur features are critical and must be matched.

Can it be replaced directly?

No direct, drop-in replacement for NQ01WMF4021TEE has been verified. All reviewed candidates have significant package or qualification mismatches.

Best replacement path

Search for AEC-Q200 qualified, anti-sulfurized 0201 resistors with 4.02kΩ resistance from other automotive series.

Main risk

The primary risk is using a non-automotive grade component in an automotive application, which can lead to premature failure and safety issues.

Recommended alternatives

Electrically superior alternative (tighter tolerance/TCR) but in a larger 0603 package and not automotive grade.

View details

Alternative comparison matrix

Feature / factor	NQ01WMF4021TEE	RT0603BRE074K02L	FRC0603F4021TS	Compatibility / risk
Package	0201	0603	0603	0603 — Requires PCB layout change.; FRC0603F4021TS: Requires PCB layout change.
Application	AEC-Q200	Not AEC-Q200	Not AEC-Q200	Not AEC-Q200 — Candidate is commercial grade.; FRC0603F4021TS: Candidate is commercial grade.
Technology	Thick Film	Thin Film	Thick Film	Thin Film / Thick Film — May offer better stability but has different performance characteristics.; FRC0603F4021TS: matched
Tolerance	±1%	±0.1%	-	±0.1% — Tighter tolerance is an upgrade.
Tcr	±100 ppm/°C (est.)	50 ppm/°C	-	50 ppm/°C — Better temperature stability.
Resistance	4.02 kΩ	-	4.02 kΩ	4.02 kΩ — matched
Power	0.05 W	-	0.1 W	0.1 W — Higher power rating is acceptable.

Application & sourcing insights

Questions & answers

A true alternative must be an AEC-Q200 qualified, anti-sulfurized, 4.02kΩ, 1% resistor in a 0201 package. No direct drop-in replacements have been identified; manual verification is required.