Is there a pin-compatible replacement for RLM12FTCMR001?

Yes, parts like HoSRX1206-2W-1mR-1% share the 1206 package and are pin-compatible. However, it is not AEC-Q200 qualified, which may make it unsuitable for replacing the target in automotive applications.

What risks should I check before replacing RLM12FTCMR001?

The most critical risk is the application qualification; the target is AEC-Q200 qualified for automotive use, and substitutes may not be. Also, verify that any difference in power rating is acceptable for your board's thermal design.

RLM12FTCMR001 Alternatives, Datasheet & Cross Reference | TAI-TECH

RLM12FTCMR001 is an AEC-Q200 qualified 1W, 1mΩ current sense resistor. Alternatives exist with higher power ratings, but may lack automotive qualification, requiring careful review for your specific application.

AI replacement insight

Application riskhigh

Alternatives lack AEC-Q200 qualification required for many automotive designs.

Electrical risklow

Key parameters match or are improved, assuming non-automotive use.

Package risklow

Package is a standard 1206, ensuring physical compatibility.

Can it be replaced directly?

For non-automotive use, HoSRX1206-2W-1mR-1% is a strong candidate, matching key specs with a superior 2W power rating. For automotive use, no direct replacement was found.

Best replacement path

Upgrade to a higher power resistor like HoSRX1206-2W-1mR-1%, but only for non-automotive applications due to qualification differences.

Main risk

The primary risk is the lack of AEC-Q200 qualification in alternatives, making them unsuitable for automotive use without further validation.

Recommended alternatives

A functional alternative in a 1206 package with matching resistance and TCR, but a higher 2W power rating and no AEC-Q200 qualification.

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Alternative comparison matrix

Feature / factor	RLM12FTCMR001	HoSRX1206-2W-1mR-1%	HoSRX1206-3W-1mR-1%	Compatibility / risk
Package	1206	1206	1206	1206 — Package size matches.; HoSRX1206-3W-1mR-1%: Package size matches.
Resistance	1mΩ	1mΩ	1mΩ	1mΩ — matched; HoSRX1206-3W-1mR-1%: matched
Power	1.0W	2.0W	3.0W	2.0W / 3.0W — Candidate has 2x higher power rating.; HoSRX1206-3W-1mR-1%: Candidate has 3x higher power rating.
Tcr	±50ppm/℃	±50ppm/°C	±50ppm/°C	±50ppm/°C — matched; HoSRX1206-3W-1mR-1%: matched
Application	AEC-Q200	Not specified	Not specified	Not specified — Target is AEC-Q200 qualified, candidate is not.; HoSRX1206-3W-1mR-1%: Target is AEC-Q200 qualified, candidate is not.

Application & sourcing insights

Questions & answers

For non-automotive applications, HoSRX1206-2W-1mR-1% is a strong alternative, offering a higher 2W power rating with matching resistance and TCR. For automotive use, a replacement must also be AEC-Q200 qualified.