Is there a pin-compatible replacement for ERJ2RKF2491X?

Several 0402 resistors like FRC0402F2491TS are pin-compatible in form factor, but none found match the critical 0.1W power rating and AEC-Q200 qualification of the ERJ2RKF2491X. Electrical validation is essential.

What risks should I check before replacing ERJ2RKF2491X?

Key risks include: 1) Power Derating: Most alternatives are 0.0625W, not 0.1W. 2) Missing AEC-Q200: The target is automotive grade; substitutes may not be. 3) Parametric Mismatches: Check resistance, tolerance, and TCR carefully.

ERJ2RKF2491X Alternatives, Datasheet & Cross Reference | PANASONIC

Finding a substitute for the Panasonic ERJ2RKF2491X requires matching its 2.49kΩ resistance, 0402 package, 0.1W power rating, and AEC-Q200 qualification. Common alternatives often have a lower power rating and lack automotive grading, posing a risk.

AI replacement insight

Electrical riskhigh

Lower power rating and lack of AEC-Q200 are critical downgrades.

Package risklow

All candidates share the same 0402 package.

Can it be replaced directly?

No direct, fully equivalent replacement was found. All candidates present a downgrade in power rating and/or lack AEC-Q200 qualification.

Best replacement path

Seek a 0.1W, AEC-Q200 qualified 0402 resistor. If unavailable, evaluate FRC0402F2491TS, but confirm circuit power dissipation is well below 0.0625W.

Main risk

The primary risk is substituting a 0.1W AEC-Q200 part with a commercial-grade 0.0625W part, which could lead to premature failure.

Recommended alternatives

Matches resistance and tolerance but has a lower power rating and lacks automotive qualification, posing a downgrade risk.

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Alternative comparison matrix

Feature / factor	ERJ2RKF2491X	FRC0402F2491TS	RT0402BRD072K49L	Compatibility / risk
Resistance	2.49 kΩ	2.49 kΩ	-	2.49 kΩ — Resistance matches target value.
Power	0.1W	0.0625W	0.0625W	0.0625W — Candidate power rating is lower than target.; RT0402BRD072K49L: Candidate power rating is lower than target.
Tolerance	±1%	±1%	±0.1%	±1% / ±0.1% — Tolerance matches target value.; RT0402BRD072K49L: Tighter tolerance is an upgrade.
Tcr	±100 ppm/K	±100 ppm/°C	25 ppm/°C	±100 ppm/°C / 25 ppm/°C — Temperature coefficient matches target.; RT0402BRD072K49L: Better temperature stability is an upgrade.
Application	AEC-Q200	Not specified	Not specified	Not specified — Target is AEC-Q200 qualified, candidate is not.; RT0402BRD072K49L: Target is AEC-Q200 qualified, candidate is not.
Technology	Thick Film	-	Thin Film	Thin Film — Different resistor technology may affect noise/pulse performance.

Application & sourcing insights

Questions & answers

Currently, no direct drop-in replacement has been identified. FRC0402F2491TS matches key electricals but has a lower power rating (0.0625W vs 0.1W) and is not AEC-Q200 qualified, making it a downgrade risk.