Is there a pin-compatible replacement for RLP25FEER040?

Yes, there are pin-compatible replacements. RLP25FEGR040 is a direct upgrade in the same 2512 package. PA2512FKE7W0R04E is also pin-compatible but requires review due to a different temperature coefficient.

What risks should I check before replacing RLP25FEER040?

Before replacing, verify the substitute's power rating, tolerance, and especially the Temperature Coefficient of Resistance (TCR). A different TCR, like in PA2512FKE7W0R04E, can impact circuit performance across its operating temperature range.

RLP25FEER040 Alternatives, Datasheet & Cross Reference | TAI-TECH

RLP25FEER040 is a 2W, 40mΩ AEC-Q200 current sense resistor in a 2512 package. Finding a substitute requires matching its precision, power handling, and physical footprint.

AI replacement insight

Electrical riskmedium

TCR mismatch is the primary electrical risk with some candidates.

Package risklow

Pin-compatible 2512 packages are readily available.

Can it be replaced directly?

Yes, RLP25FEGR040 is a strong pin-compatible upgrade. PA2512FKE7W0R04E is also pin-compatible but has a worse temperature coefficient that must be reviewed.

Best replacement path

RLP25FEGR040 from the same manufacturer is an excellent upgrade, offering a higher 3W power rating with all other key specs matching.

Main risk

The main risk when substituting is a mismatch in the Temperature Coefficient of Resistance (TCR), which can affect measurement accuracy over temperature.

Recommended alternatives

A 40mΩ, 1% resistor in the same 2512 package, with a higher power rating of 3W.

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Alternative comparison matrix

Feature / factor	RLP25FEER040	RLP25FEGR040	PA2512FKE7W0R04E	Compatibility / risk
Package	2512	2512	2512	2512 — Same package and pin count.; PA2512FKE7W0R04E: Same package and pin count.
Power	2W	3W	2W	3W / 2W — Candidate has higher power rating.; PA2512FKE7W0R04E: Power rating matches.
Resistance	40mΩ	40mΩ	40mΩ	40mΩ — Resistance matches.; PA2512FKE7W0R04E: Resistance matches.
Tolerance	±1%	±1%	-	±1% — Tolerance matches.
Tcr	±50ppm/℃	±50ppm/℃	±75ppm/°C	±50ppm/℃ / ±75ppm/°C — Temperature coefficient matches.; PA2512FKE7W0R04E: Candidate TCR is worse.

Application & sourcing insights

Questions & answers

The best alternative is RLP25FEGR040. It is from the same manufacturer and offers a higher power rating (3W vs 2W) while matching all other critical specifications like resistance, tolerance, TCR, and package.