
Milliohm
A 2512 package alternative with a higher 3W power rating but much lower precision. Requires engineering review.
Finding a substitute for the RESI PCSR2512BR100M6 is challenging due to its high-precision characteristics. While several alternatives exist in the same 2512 package, they involve a trade-off in performance.
Weaker tolerance (±1% vs ±0.1%) and TCR will impact the accuracy of current sensing circuits.
All candidates share the same 2512 package, ensuring physical compatibility on the PCB.
No direct, 1-to-1 replacements with matching ±0.1% tolerance and ±15ppm/°C TCR were found. All available alternatives require a trade-off in precision.
Use a parametric alternative like VMS-R100-1.0-U, which offers a higher power rating and the closest TCR, but requires careful validation due to its weaker tolerance.
The primary risk is a loss of measurement accuracy due to the substitute's weaker resistance tolerance and lower thermal stability (TCR).

Milliohm
A 2512 package alternative with a higher 3W power rating but much lower precision. Requires engineering review.
| Feature / factor | PCSR2512BR100M6 | HoLLR2512-3W-100mR-1% | RLP25FEGR100 | MFL12HR100FT | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 2512 | 2512 | 2512 | 2512 | 2512 — Form factor matches.; RLP25FEGR100: Form factor matches.; MFL12HR100FT: Form factor matches.; VMS-R100-1.0-U: Form factor matches. |
| Resistance | 0.1Ω | 0.1Ω | 0.1Ω | 0.1Ω | 0.1Ω — Resistance value matches.; RLP25FEGR100: Resistance value matches.; MFL12HR100FT: Resistance value matches.; VMS-R100-1.0-U: Resistance value matches. |
| Power | 1.0W | 3.0W | 3.0W | 2.0W | 3.0W / 2.0W / 4.0W — Higher power rating provides more margin.; RLP25FEGR100: Higher power rating provides more margin.; MFL12HR100FT: Higher power rating provides more margin.; VMS-R100-1.0-U: Significantly higher power rating. |
| Tolerance | ±0.1% | ±1.0% | ±1.0% | ±1.0% | ±1.0% — Significantly weaker precision.; RLP25FEGR100: Significantly weaker precision.; MFL12HR100FT: Significantly weaker precision.; VMS-R100-1.0-U: Significantly weaker precision. |
| Tcr | ±15ppm/°C | ±50ppm/°C | ±50 ppm/℃ | ±50ppm/℃ | ±50ppm/°C / ±50 ppm/℃ / ±50ppm/℃ / <20 ppm/K — Lower thermal stability.; RLP25FEGR100: Lower thermal stability.; MFL12HR100FT: Lower thermal stability.; VMS-R100-1.0-U: Slightly weaker but comparable stability. |
VMS-R100-1.0-U by Isabellenhuette is a strong candidate, offering a 4W power rating and a close TCR (<20ppm/K). However, all found alternatives have a weaker tolerance (±1%) and require engineering validation.