Is there a pin-compatible replacement for RLM12FTCMR025?

Yes, several parts like HoJLR1206-1W-25mR-1% and MS061WF250MT5E are pin-compatible in a 1206 package. However, they are not direct drop-in replacements due to a lower max operating temperature and lack of AEC-Q200 qualification.

What risks should I check before replacing RLM12FTCMR025?

Key risks include: 1) Lower maximum operating temperature (+155°C vs +170°C). 2) Lack of AEC-Q200 qualification if required. 3) Potential for weaker Temperature Coefficient of Resistance (TCR). 4) Different resistor technology (e.g., Thick Film vs Metal Alloy).

RLM12FTCMR025 Alternatives, Datasheet & Cross Reference | TAI-TECH

RLM12FTCMR025 is a 1W, 25mΩ, 1206 AEC-Q200 current sense resistor. Alternatives exist but require careful review of operating temperature, TCR, and automotive qualification.

AI replacement insight

Electrical riskmedium

TCR mismatch and technology differences in some candidates require evaluation.

Package risklow

All recommended candidates are in a compatible 1206 package.

Sourcing risklow

Multiple manufacturers offer parametrically similar parts.

Can it be replaced directly?

No direct drop-in replacement has been identified. All suitable candidates have a lower maximum operating temperature (+155°C vs +170°C). The Panasonic ERJ8CWFR025V is also AEC-Q200 qualified but has a weaker TCR.

Best replacement path

For automotive applications, ERJ8CWFR025V from Panasonic is the closest functional match due to its AEC-Q200 qualification, but its lower temperature range and higher TCR must be validated.

Main risk

The primary risk is the lower maximum operating temperature of all candidates, which may not be suitable for high-temperature environments where the original part was specified.

Recommended alternatives

AEC-Q200 qualified alternative with weaker TCR and lower max temperature.

View details

Alternative comparison matrix

Feature / factor	RLM12FTCMR025	ERJ8CWFR025V	HoJLR1206-1W-25mR-1%	MS061WF250MT5E	Compatibility / risk
Package	1206	1206	1206	1206 (3216 Metric)	1206 / 1206 (3216 Metric) — Package size matches.; HoJLR1206-1W-25mR-1%: Package size matches.; MS061WF250MT5E: Package size matches.
Qualification	AEC-Q200	AEC-Q200	Not specified	Not specified	AEC-Q200 / Not specified — AEC-Q200 qualification matches.; HoJLR1206-1W-25mR-1%: Candidate is not AEC-Q200 qualified.; MS061WF250MT5E: Candidate is not AEC-Q200 qualified.
Tcr	±50ppm/℃	±75 ppm/K	±50ppm/℃	-	±75 ppm/K / ±50ppm/℃ — TCR is weaker than target.; HoJLR1206-1W-25mR-1%: Temperature coefficient matches.
Temperature	-55℃ to +170℃	-55 °C to +155 °C	-55°C to +155°C	-55°C to +155°C	-55 °C to +155 °C / -55°C to +155°C — Candidate has a lower max operating temperature.; HoJLR1206-1W-25mR-1%: Candidate has a lower max operating temperature.; MS061WF250MT5E: Candidate has a lower max operating temperature.
Technology	Metal Alloy Plate	Thick Film	-	-	Thick Film — Different resistor construction.
Resistance	0.025Ω	-	0.025Ω	0.025Ω	0.025Ω — Resistance value matches.; MS061WF250MT5E: Resistance value matches.
Power	1W	-	1W	1W	1W — Power rating matches.; MS061WF250MT5E: Power rating matches.

Application & sourcing insights

Questions & answers

The Panasonic ERJ8CWFR025V is a strong candidate as it is also AEC-Q200 qualified, but it has a lower max temperature and weaker TCR. Other parts like Milliohm's HoJLR1206-1W-25mR-1% match TCR but lack AEC-Q200.