Is there a pin-compatible replacement for AC0603FR-074R99L?

Yes, parts like RC0603FR-074R99L share the same 0603 package and pinout, but they are not functionally equivalent for automotive use as they lack AEC-Q200 certification.

What risks should I check before replacing AC0603FR-074R99L?

The main risk is the lack of AEC-Q200 qualification, which is critical for automotive environments. Also verify power rating, TCR, and any pulse-withstanding requirements for your circuit.

AC0603FR-074R99L Alternatives, Datasheet & Cross Reference | Yageo

Finding a substitute for the Yageo AC0603FR-074R99L involves matching its 4.99Ω resistance, 1% tolerance, and 0603 package. The key challenge is finding an alternative with the same AEC-Q200 automotive qualification.

AI replacement insight

Electrical riskhigh

Using a non-AEC qualified part in an automotive application can lead to premature failure.

Package risklow

Multiple candidates match the 0603 package, ensuring physical compatibility.

Can it be replaced directly?

No direct, drop-in replacement has been identified. While several parts match key electrical parameters, they lack the critical AEC-Q200 qualification of the original part.

Best replacement path

Search for other AEC-Q200 qualified 0603 resistors with 4.99Ω, 1% tolerance, and ≥0.1W power rating from automotive-grade series.

Main risk

The primary risk is reliability and safety in automotive applications due to the lack of AEC-Q200 qualification in substitutes.

Recommended alternatives

Same-vendor option with matching electricals but lacks AEC-Q200 qualification, making it a downgrade for automotive use.

View details

Alternative comparison matrix

Feature / factor	AC0603FR-074R99L	RC0603FR-074R99L	0603WAF499KT5E	FRC0603F4R99TS	Compatibility / risk
Package	0603	0603	0603	0603	0603 — Same package and pin count.; 0603WAF499KT5E: Same package and pin count.; FRC0603F4R99TS: Same package and pin count.
Resistance	4.99 Ω	4.99 Ω	4.99 Ω	4.99 Ω	4.99 Ω — Resistance value matches.; 0603WAF499KT5E: Resistance value matches.; FRC0603F4R99TS: Resistance value matches.
Tolerance	1%	1%	-	-	1% — Tolerance matches.
Power	0.1 W	0.1 W	-	-	0.1 W — Power rating matches.
Qualification	AEC-Q200	General Purpose	General Purpose	General Purpose	General Purpose — Candidate lacks target's AEC-Q200 automotive qualification.; 0603WAF499KT5E: Candidate lacks target's AEC-Q200 automotive qualification.; FRC0603F4R99TS: Candidate lacks target's AEC-Q200 automotive qualification.
Tcr	±200 ppm/°C	-	±100 ppm/°C	±100 ppm/°C	±100 ppm/°C — Candidate has a better (lower) TCR.; FRC0603F4R99TS: Candidate has a better (lower) TCR.

Application & sourcing insights

Questions & answers

The best alternative is another AEC-Q200 qualified resistor with the same 4.99Ω, 1% specs. For non-automotive use, Yageo's RC0603FR-074R99L is a strong candidate.