Is there a pin-compatible replacement for ERJ2RKF4992X?

Yes, several 0402 package resistors are pin-compatible. ERJ2RKF5232X and ERJPA2F4702X are strong candidates, but you must verify that the small resistance difference (4.8% to -5.8%) is acceptable.

What risks should I check before replacing ERJ2RKF4992X?

Verify that your circuit can tolerate a resistance change of approximately ±5%. Also, confirm the power dissipation requirements of your specific application, especially if not choosing the higher-power option.

ERJ2RKF4992X Alternatives, Datasheet & Cross Reference | PANASONIC

ERJ2RKF4992X is an active 49.9kΩ, 1%, 0.1W, 0402 thick film resistor. Strong parametric alternatives from Panasonic exist with slightly different resistance values that may be suitable for many applications.

AI replacement insight

Electrical risklow

Candidates have minor resistance differences. One offers higher power rating.

Package risklow

All suggested alternatives share the same 0402 package.

Can it be replaced directly?

No exact drop-in replacement was found. However, ERJ2RKF5232X is a very close parametric match from Panasonic with a 4.8% higher resistance.

Best replacement path

Use ERJ2RKF5232X for a close match from the same series, or ERJPA2F4702X for an upgraded power rating.

Main risk

The primary risk is the slight deviation in resistance value, which must be acceptable for the circuit's design tolerance.

Recommended alternatives

Very close parametric match from the same Panasonic series with identical power, tolerance, and TCR.

View details

Alternative comparison matrix

Feature / factor	ERJ2RKF4992X	ERJ2RKF5232X	ERJPA2F4702X	Compatibility / risk
Resistance	49.9 kΩ	52.3 kΩ	47 kΩ	52.3 kΩ / 47 kΩ — +4.8% difference, within E24 series step.; ERJPA2F4702X: -5.8% difference.
Power	0.1 W	0.1 W	0.25 W	0.1 W / 0.25 W — Identical power rating.; ERJPA2F4702X: Higher power rating provides more margin.
Tolerance	±1%	±1%	-	±1% — matched
Tcr	±100 ppm/°C	±100 ppm/°C	±100 ppm/°C	±100 ppm/°C — matched; ERJPA2F4702X: Inferred from datasheet, verify.
Package	0402	0402	0402	0402 — Same package and pinout.; ERJPA2F4702X: Same package and pinout.
Application	General Purpose	-	Anti-Surge	Anti-Surge — Adds surge protection feature.

Application & sourcing insights

Questions & answers

ERJ2RKF5232X is a strong alternative from the same Panasonic series with a slightly higher resistance of 52.3kΩ. For higher power needs, consider ERJPA2F4702X with a 0.25W rating.