Is there a pin-compatible replacement for AC0402FR-0743KL?

Yes, parts like FRC0402F4322TS are pin-compatible in the same 0402 package. However, they are not functionally identical due to the lack of AEC-Q200 qualification, and engineering review is required.

What risks should I check before replacing AC0402FR-0743KL?

The main risk is reliability; the target is AEC-Q200 automotive-grade, and the alternatives are not. Also check for differences in technology (Thick vs. Thin Film) and tolerance, as these can impact circuit performance.

AC0402FR-0743KL Alternatives, Datasheet & Cross Reference | Yageo

Q: What is the best alternative to AC0402FR-0743KL?

The best alternative depends on your application's requirements. For general-purpose use, FRC0402F4322TS is a very close parametric match. However, no reviewed candidate matches the target's AEC-Q200 automotive qualification.

Finding a substitute for the Yageo AC0402FR-0743KL, a 43kΩ 1% 0402 automotive-grade resistor, requires careful attention to its AEC-Q200 qualification. While several parts match its physical and basic electrical specs, they may not meet the same reliability standards.

AI replacement insight

Application riskhigh

Using a non-AEC-Q200 part in an automotive system can lead to premature failure.

Electrical riskmedium

Candidates may have different technology (Thin Film) or wider tolerance (5%) requiring circuit analysis.

Package risklow

All reviewed candidates share the same 0402 package, ensuring physical compatibility.

Can it be replaced directly?

No, a direct, fully-qualified replacement for AC0402FR-0743KL was not identified. All candidates lack the AEC-Q200 automotive qualification.

Best replacement path

For non-automotive applications, FRC0402F4322TS is the closest parametric match. No direct AEC-Q200 qualified replacement was found in this review.

Main risk

The primary risk is substituting a commercial-grade resistor into an automotive application that requires AEC-Q200 reliability standards.

Recommended alternatives

A close parametric match in a 0402 package, but lacks the target's AEC-Q200 automotive qualification.

View details

Alternative comparison matrix

Feature / factor	AC0402FR-0743KL	FRC0402F4322TS	RT0402BRD0743KL	Compatibility / risk
Package	0402	0402	0402	0402 — Form factor matches.; RT0402BRD0743KL: Form factor matches.
Resistance	43 kΩ	43.2 kΩ	-	43.2 kΩ — Difference is <0.5%, well within target's tolerance.
Tolerance	±1%	±1%	±0.1%	±1% / ±0.1% — Precision matches.; RT0402BRD0743KL: Tighter tolerance is an upgrade.
Power	1/16 W	1/16 W	-	1/16 W — Power rating matches.
Application	AEC-Q200	Not specified	Not specified	Not specified — Target is AEC-Q200 qualified, candidate is not.; RT0402BRD0743KL: Target is AEC-Q200 qualified, candidate is not.
Technology	Thick Film	-	Thin Film	Thin Film — Different technology may affect noise and pulse handling.
Tcr	±100 ppm/°C	-	25 ppm/°C	25 ppm/°C — Better temperature stability.

Application & sourcing insights

Questions & answers