Is there a pin-compatible replacement for RLP25FEER003?

Yes, several pin-compatible replacements in a 2512 package are available. Candidates like HoLLR2512-3W-3mR-1% match the footprint and key electricals, but verification of all parameters against your design requirements is recommended.

What risks should I check before replacing RLP25FEER003?

Key risks include differences in power rating, temperature coefficient (TCR), and pulse withstanding capability. Ensure the replacement's power handling is sufficient (ideally equal or greater) and its TCR meets your circuit's stability needs.

RLP25FEER003 Alternatives, Datasheet & Cross Reference | TAI-TECH

The TAI-TECH RLP25FEER003 is a 2W, 3mΩ current sense resistor in a 2512 package. Several alternatives exist, including power upgrades and options with different temperature coefficients, requiring careful review for specific applications.

AI replacement insight

Electrical risklow

Low if power and TCR are matched or improved.

Package risklow

Low, as 2512 is a standard package.

Sourcing riskmedium

Check stock and lead times for the chosen alternative.

Can it be replaced directly?

Yes, HoLLR2512-3W-3mR-1% is a strong candidate for direct replacement, offering an upgrade in power rating.

Best replacement path

Upgrade to a 3W version like HoLLR2512-3W-3mR-1% for improved power handling.

Main risk

The main risk is selecting a part with a weaker Temperature Coefficient (TCR), which could affect measurement accuracy over temperature.

Recommended alternatives

A strong, pin-compatible alternative with an upgraded 3W power rating and matching key electricals.

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Alternative comparison matrix

Feature / factor	RLP25FEER003	HoLLR2512-3W-3mR-1%	LR123WF300NT4E	PA2512FKF7T0R003E	Compatibility / risk
Power	2W	3W	3W	3W	3W — Candidate has higher power rating, offering more design margin.; LR123WF300NT4E: Candidate has higher power rating, offering more design margin.; PA2512FKF7T0R003E: Candidate has higher power rating.
Resistance	3mΩ	3mΩ	3mΩ	3mΩ	3mΩ — matched; LR123WF300NT4E: matched; PA2512FKF7T0R003E: matched
Tolerance	±1%	±1%	±1%	-	±1% — matched; LR123WF300NT4E: matched
Tcr	±50ppm/℃	±50ppm/°C	±50 PPM/°C	±100 ppm/°C	±50ppm/°C / ±50 PPM/°C / ±100 ppm/°C — matched; LR123WF300NT4E: matched; PA2512FKF7T0R003E: Weaker TCR may affect accuracy over temperature.
Package	2512	2512	2512	2512	2512 — matched; LR123WF300NT4E: matched; PA2512FKF7T0R003E: matched

Application & sourcing insights

Questions & answers

HoLLR2512-3W-3mR-1% from Milliohm and LR123WF300NT4E from UNI ROYAL are strong alternatives, offering a higher 3W power rating while matching resistance, tolerance, TCR, and package.