Is there a pin-compatible replacement for RLM12FTCMR005?

Yes, HoLLR1206-1W-5mR-1% from Milliohm is a pin-compatible replacement. It shares the same 1206 package, pin count, and critical electrical parameters, making it a strong candidate for a drop-in replacement, pending final design verification.

What risks should I check before replacing RLM12FTCMR005?

Key risks include package mismatch, TCR degradation, and power handling. Ensure any alternative has a 1206 package for drop-in. Check the Temperature Coefficient of Resistance (TCR); a higher value (e.g., > ±50 ppm/°C) can affect precision. Also, verify the power rating is at least 1W.

RLM12FTCMR005 Alternatives, Datasheet & Cross Reference | TAI-TECH

The TAI-TECH RLM12FTCMR005 is a 1W, 5mΩ current sense resistor in a standard 1206 package, qualified for automotive use. When seeking alternatives, focus on matching the resistance, power rating, and ±50 ppm/°C TCR for optimal performance.

AI replacement insight

Package riskhigh

Several alternatives are in a larger 2512 package and are not drop-in replacements.

Electrical riskmedium

Some candidates have a weaker TCR, which can affect precision in sensitive applications.

Can it be replaced directly?

Yes, pin-compatible replacements exist. The Milliohm HoLLR1206-1W-5mR-1% is a strong candidate that matches all key specifications.

Best replacement path

For a direct drop-in, select a 1206 package resistor with 5mΩ resistance, 1W power, and TCR of ±50 ppm/°C or better, such as the Milliohm HoLLR1206-1W-5mR-1%.

Main risk

The main risk is selecting a part with a different package (e.g., 2512) which requires board layout changes, or a part with a weaker TCR which can impact circuit accuracy over temperature.

Recommended alternatives

Excellent alternative with identical package, resistance, power, tolerance, and TCR.

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Alternative comparison matrix

Feature / factor	RLM12FTCMR005	HoLLR1206-1W-5mR-1%	FMF06FTHR005-LH	RLP25FEGMR005	Compatibility / risk
Package	1206	1206	-	-	2512 — Larger package, not a drop-in replacement. Requires layout change.
Resistance	5 mΩ	5 mΩ	-	-	5 mΩ — Identical resistance.
Power	1 W	1 W	-	-	3 W — Higher power rating offers more thermal margin.
Tcr	±50 ppm/°C	±50ppm/°C	-	-	±70 ppm/℃ — Candidate TCR is wider, may affect precision over temperature.
Tolerance	±1%	±1%	-	-	±1% — Identical tolerance.

Application & sourcing insights

Questions & answers

The Milliohm HoLLR1206-1W-5mR-1% is an excellent alternative, matching all key electrical and physical specifications of the RLM12FTCMR005, including the 1206 package, 1W power rating, 5mΩ resistance, and ±50 ppm/°C TCR.