Is there a pin-compatible replacement for AC0402FR-0739KL?

Several 0402 package resistors like FRC0402F3902TS are form-fit compatible. However, a true pin-to-pin replacement requires matching the AEC-Q200 qualification, which is a key feature of the original part.

What risks should I check before replacing AC0402FR-0739KL?

The main risk is using a non-AEC-Q200 qualified part in an automotive or high-reliability application. Also, verify that the replacement's technology (thick vs. thin film) and TCR are suitable for your circuit.

AC0402FR-0739KL Alternatives, Datasheet & Cross Reference | Yageo

Finding a replacement for the Yageo AC0402FR-0739KL 39kΩ resistor requires careful attention to its AEC-Q200 qualification for automotive use. While several options match its core electrical values, they may lack this critical certification.

AI replacement insight

Electrical riskhigh

Using a non-AEC part in an automotive design violates qualification standards.

Package risklow

All candidates match the 0402 package, ensuring physical compatibility.

Can it be replaced directly?

No, there is no direct drop-in replacement among the candidates shown that matches the critical AEC-Q200 qualification.

Best replacement path

For non-automotive designs, FRC0402F3902TS offers a strong parametric match. For automotive, seek another AEC-Q200 part.

Main risk

The primary risk is substituting a non-AEC-Q200 qualified resistor into an automotive or high-reliability circuit, which could compromise system safety and reliability.

Recommended alternatives

A functional alternative with matching electricals in a 0402 package, but lacks automotive qualification.

View details

Alternative comparison matrix

Feature / factor	AC0402FR-0739KL	FRC0402F3902TS	RT0402BRD0739KL	Compatibility / risk
Package	0402	0402	0402	0402 — Package size matches.; RT0402BRD0739KL: Package size matches.
Resistance	39kΩ	39kΩ	-	39kΩ — Resistance value matches.
Tolerance	±1%	±1%	±0.1%	±1% / ±0.1% — Tolerance matches.; RT0402BRD0739KL: Tighter tolerance offers higher precision.
Tcr	±100 ppm/°C	±100 ppm/°C	25 ppm/°C	±100 ppm/°C / 25 ppm/°C — Temperature coefficient matches.; RT0402BRD0739KL: Lower TCR provides better stability.
Application	AEC-Q200	None	None	None — Candidate is not AEC-Q200 qualified.; RT0402BRD0739KL: Candidate is not AEC-Q200 qualified.
Technology	Thick Film	-	Thin Film	Thin Film — Different resistor technology may affect noise/pulse performance.

Application & sourcing insights

Questions & answers

For non-automotive applications, FRC0402F3902TS is a strong functional alternative with matching resistance, tolerance, and power. For automotive use, a replacement must also be AEC-Q200 qualified.