Is there a pin-compatible replacement for RLH12FTCR150?

Several 1206 package resistors with 2 terminals exist, but a true pin-compatible replacement requires verifying that the power rating meets your application's safety requirements. No direct drop-in is confirmed without this review.

What risks should I check before replacing RLH12FTCR150?

Key risks include ensuring the replacement's power rating provides sufficient derating for your application, and that its Temperature Coefficient of Resistance (TCR) is suitable for your circuit's precision requirements.

RLH12FTCR150 Alternatives, Datasheet & Cross Reference | TAI-TECH

TAI-TECH's RLH12FTCR150 is a 1W, 150mΩ current sense resistor in a 1206 package. Finding a replacement requires matching power, resistance, and tolerance, with careful review of the temperature coefficient (TCR).

AI replacement insight

Electrical riskmedium

Power rating is identical to target, lacking a conservative safety margin.

Package risklow

1206 is a standard SMT package with a consistent footprint.

Can it be replaced directly?

No direct, drop-in replacement is confirmed. While several parts match key specs, their 1W power rating does not meet a conservative safety margin, necessitating an engineering review.

Best replacement path

Look for 1206 current sense resistors with R=0.15Ω, Tol=±1%, and Power > 1W to ensure a safety margin. Candidates with improved TCR (≤50ppm/°C) are preferable.

Main risk

The primary risk is thermal stress if the application runs close to the 1W power limit. A 1W-for-1W swap leaves no additional safety margin.

Recommended alternatives

A 1206 current sense resistor with matching resistance and tolerance, and improved TCR. Power rating requires review.

View details

Alternative comparison matrix

Feature / factor	RLH12FTCR150	HoLRT1206-1W-150mR-1%	HoYH1206-1W-150mR-1%	Compatibility / risk
Package	1206	1206	1206	1206 — Standard 1206 package matches target.; HoYH1206-1W-150mR-1%: Standard 1206 package matches target.
Resistance	0.15Ω	0.15Ω	0.15Ω	0.15Ω — Resistance value is identical.; HoYH1206-1W-150mR-1%: Resistance value is identical.
Power	1.0W	1.0W	1.0W	1.0W — Identical power rating; conservative rules suggest a higher rating for safety margin.; HoYH1206-1W-150mR-1%: Identical power rating; conservative rules suggest a higher rating for safety margin.
Tolerance	±1%	±1%	±1%	±1% — Resistance tolerance is identical.; HoYH1206-1W-150mR-1%: Resistance tolerance is identical.
Tcr	100ppm/℃	±50ppm/℃	≤50ppm/°C	±50ppm/℃ / ≤50ppm/°C — Candidate has a better (lower) Temperature Coefficient of Resistance.; HoYH1206-1W-150mR-1%: Candidate has a better (lower) Temperature Coefficient of Resistance.

Application & sourcing insights

Questions & answers

Candidates like Milliohm's HoYH1206-1W-150mR-1% offer matching resistance, tolerance, and package with a better TCR. However, their power rating is identical, requiring an engineering review to confirm design margin.