What risks should I check before replacing AC0402FR-074K3L?

The main risk is the lack of AEC-Q200 qualification, making any substitute unsuitable for automotive designs. Other risks include parametric differences, such as the resistance value in RC0402FR-074K22L, or a different resistor technology (Thin Film) in RT0402BRD074K3L, which could affect performance.

AC0402FR-074K3L Alternatives, Datasheet & Cross Reference | Yageo

AC0402FR-074K3L is an AEC-Q200 qualified 4.3kΩ 1/16W thick film resistor in an 0402 package. While several alternatives exist for general use, none match its automotive qualification.

AI replacement insight

Sourcing riskhigh

Substituting a non-AEC-Q200 part in an automotive design is a high compliance and reliability risk.

Electrical riskmedium

Some candidates have different resistance values or technology (Thin Film) that require circuit analysis.

Can it be replaced directly?

Direct replacement for AC0402FR-074K3L should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

For non-automotive applications, RC-02K4301FT is the best parametric match. For automotive use, a new search for an AEC-Q200 qualified 4.3kΩ 0402 resistor is required.

Main risk

The primary risk is the loss of automotive-grade (AEC-Q200) qualification, which can impact reliability and safety in harsh environments.

Recommended alternatives

A pin-compatible alternative with matching electricals, but lacks automotive qualification.

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Alternative comparison matrix

Feature / factor	AC0402FR-074K3L	RC-02K4301FT	RT0402BRD074K3L	RC0402FR-074K22L	Compatibility / risk
Package	0402	0402	0402	0402	0402 — Same package and pin count.; RT0402BRD074K3L: Same package and pin count.; RC0402FR-074K22L: Same package and pin count.
Resistance	4.3kΩ	4.3kΩ	4.3kΩ	4.22kΩ	4.3kΩ / 4.22kΩ — matched; RT0402BRD074K3L: matched; RC0402FR-074K22L: Slightly lower resistance value.
Tolerance	±1%	±1%	±0.1%	±1%	±1% / ±0.1% — matched; RT0402BRD074K3L: Higher precision than target.; RC0402FR-074K22L: matched
Tcr	±100 ppm/°C	±100ppm/℃	25 ppm/°C	-	±100ppm/℃ / 25 ppm/°C — matched; RT0402BRD074K3L: Better temperature stability.
Application	AEC-Q200	Not specified	Not specified	Not specified	Not specified — Target is AEC-Q200 qualified for automotive use, candidate is not.; RT0402BRD074K3L: Target is AEC-Q200 qualified, candidate is not.; RC0402FR-074K22L: Target is AEC-Q200 qualified, candidate is general purpose.
Technology	Thick Film	-	Thin Film	-	Thin Film — May have different pulse handling characteristics.

Application & sourcing insights

Questions & answers

Verified drop-in options for AC0402FR-074K3L 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.