LR2512D-3W-5mR-1%
Milliohm
Needs validationlow risk
A 3W upgrade with a better temperature coefficient (≤50ppm/°C) in the same 2512 package.
Best Alternatives to FMF25FPJR005-LH
Find suitable replacements for the FMF25FPJR005-LH, a 2W, 5mΩ current sense resistor. Explore verified upgrade paths with higher 3W power ratings and improved performance in the same 2512 package.
AI replacement insight
Electrical risklow
Upgrading power and TCR improves robustness.
Package risklow
All recommended alternatives use the same 2512 package.
Sourcing risklow
Multiple vendors offer compatible 3W, 5mΩ, 2512 resistors.
Can it be replaced directly?
No exact 2W replacements meet the engineering safety margin rule. The recommended path is to use a 3W-rated component, which is a common and safe upgrade.
Best replacement path
Upgrade to a 3W-rated part like Milliohm's LR2512D-3W-5mR-1% for increased power handling and better thermal performance in the same 2512 package.
Main risk
The primary consideration is thermal management. While upgrading from 2W to 3W is generally safe, ensure your PCB layout can dissipate heat if the part operates near its new, higher limit.
Recommended alternatives
3Alternative comparison matrix
| Feature / factor | FMF25FPJR005-LH | LR2512D-3W-5mR-1% | ASR-K-3-5F | RLP25FEGR005 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 2512 | 2512 | 2512 | 2512 | 2512 — Same EIA package ensures form-fit compatibility.; ASR-K-3-5F: Same EIA package ensures form-fit compatibility.; RLP25FEGR005: matched |
| Resistance | 5 mΩ | 5 mΩ | 5 mΩ | - | 5 mΩ — matched; ASR-K-3-5F: matched |
| Power | 2.0 W | 3.0 W | 3.0 W | 3.0 W | 3.0 W — Higher power rating provides increased thermal margin.; ASR-K-3-5F: Higher power rating provides increased thermal margin.; RLP25FEGR005: Higher power rating provides increased thermal margin. |
| Tcr | ±70 ppm/℃ | ≤50ppm/°C | ±70ppm/℃ | ±50ppm/℃ | ≤50ppm/°C / ±70ppm/℃ / ±50ppm/℃ — Tighter TCR improves measurement stability over temperature.; ASR-K-3-5F: matched; RLP25FEGR005: Tighter TCR improves measurement stability. |
| Tolerance | ±1% | ±1% | - | - | ±1% — matched |
| Technology | Metal Strip | - | - | Metal Foil | Metal Foil — Technology differs; review datasheet for pulse handling needs. |
Application & sourcing insights
Questions & answers
The best alternatives are upgrade paths, such as Milliohm's LR2512D-3W-5mR-1%, which offers a higher 3W power rating and a better TCR in the same 2512 package.