Is there a pin-compatible replacement for 25121WF330MT4E?

Yes, HoJLR2512-3W-33mR-1% is a pin-compatible replacement with a matching package, resistance, and tolerance, plus an upgraded power rating. Engineering review is still recommended.

What risks should I check before replacing 25121WF330MT4E?

Key risks include resistance deviation, power rating, and technology differences. Alternatives may have slightly different resistance (e.g., 30mΩ vs 33mΩ) or be made of metal alloy instead of thick film, which can affect pulse performance.

25121WF330MT4E Alternatives, Datasheet & Cross Reference | UNI-ROYAL

Find and compare alternatives for the UNI ROYAL 25121WF330MT4E, a 1W, 33mΩ, 1% tolerance resistor in a 2512 package. This guide provides verified substitutes and analyzes key parametric differences.

AI replacement insight

Electrical riskmedium

Some alternatives have slightly different resistance or TCR values.

Package risklow

All recommended alternatives use the same 2512 package.

Sourcing risklow

Multiple vendors offer suitable alternatives for this common resistor value.

Can it be replaced directly?

HoJLR2512-3W-33mR-1% is the closest match, sharing key electrical parameters and package, while offering a higher 3W power rating.

Best replacement path

Upgrade to a higher power rating part like Milliohm's HoJLR2512-3W-33mR-1% for improved reliability and thermal margin.

Main risk

The primary risk is substituting with a part that has a slightly different resistance value (e.g., 30mΩ), which could impact circuit accuracy.

Recommended alternatives

Excellent upgrade with same resistance and tolerance but a higher 3W power rating in the same 2512 package.

View details

Alternative comparison matrix

Feature / factor	25121WF330MT4E	HoJLR2512-3W-33mR-1%	PA2512FKE7W0R03E	Compatibility / risk
Resistance	33mΩ	33mΩ	30mΩ	33mΩ / 30mΩ — Exact match.; PA2512FKE7W0R03E: 9% lower resistance, requires circuit validation.
Power	1W	3W	2W	3W / 2W — Higher power rating provides more design margin.; PA2512FKE7W0R03E: Higher power rating provides more design margin.
Tolerance	±1%	±1%	±1%	±1% — Exact match.; PA2512FKE7W0R03E: Exact match.
Package	2512	2512	2512	2512 — Same package ensures form and fit.; PA2512FKE7W0R03E: Same package ensures form and fit.
Tcr	Not specified	±50 ppm/°C	±100 ppm/°C	±50 ppm/°C / ±100 ppm/°C — Superior TCR for better stability over temperature.; PA2512FKE7W0R03E: May be a wider TCR than the target part.

Application & sourcing insights

Questions & answers

HoJLR2512-3W-33mR-1% by Milliohm is an excellent upgrade, offering the same resistance and tolerance with a higher 3W power rating in the same 2512 package.