LR2512D-3W-5mR-1%
Milliohm
Needs validationhigh risk
A functional alternative with higher power rating (3W) but requires a board redesign for its larger 2512 package.
Best Alternatives to RLM20FEDR005
RLM20FEDR005 is a 1.5W, 5mΩ current sense resistor in a 2010 package. Finding a direct drop-in replacement is challenging, but functional alternatives with different packages exist.
AI replacement insight
Package riskhigh
Requires PCB redesign from 2010 to 2512 footprint.
Electrical risklow
Candidates offer higher power, but TCR must be verified for some options.
Can it be replaced directly?
No direct drop-in replacement found. All viable alternatives require a PCB layout change due to a larger package size (2512 vs 2010).
Best replacement path
Redesign the PCB for a 2512 package to use a higher-power part like LR2512D-3W-5mR-1%.
Main risk
The primary risk is the physical package mismatch, which prevents a simple drop-in replacement and necessitates a board redesign.
Recommended alternatives
2Alternative comparison matrix
| Feature / factor | RLM20FEDR005 | LR2512D-3W-5mR-1% | ASR-K-3-5F | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 2010 | 2512 | 2512 | 2512 — Candidate is larger, requires PCB redesign.; ASR-K-3-5F: Candidate is larger, requires PCB redesign. | |
| Power | 1.5W | 3.0W | 3.0W | 3.0W — Higher power rating provides more design margin.; ASR-K-3-5F: Higher power rating provides more design margin. | |
| Tcr | ±50ppm/℃ | ≤25-50ppm/°C | ±70ppm/℃ | ≤25-50ppm/°C / ±70ppm/℃ — TCR is comparable or better.; ASR-K-3-5F: Worse temperature stability may affect precision. | |
| Resistance | 0.005Ω | 0.005Ω | 0.005Ω | 0.005Ω — matched; ASR-K-3-5F: matched | |
| Tolerance | 1.0% | 1.0% | - | 1.0% — matched |
Application & sourcing insights
Questions & answers
LR2512D-3W-5mR-1% is a strong functional alternative with a higher 3W power rating, but it requires a PCB layout change for its larger 2512 package.