Is there a pin-compatible replacement for 25121WF680LT4E?

Yes, several resistors share the 2512 package. HoLRT2512-2W-680mR-1% is a likely pin-compatible upgrade, but requires footprint verification. Other options may have different electrical parameters.

What risks should I check before replacing 25121WF680LT4E?

Key risks include mismatches in resistance value, power rating, and Temperature Coefficient (TCR). A higher TCR can cause resistance to drift with temperature, affecting circuit precision.

25121WF680LT4E Alternatives, Datasheet & Cross Reference | UNI-ROYAL

Find alternatives for the UNI-ROYAL 25121WF680LT4E, a 0.68Ω 1W 1% resistor in a 2512 package. This page analyzes potential replacements, highlighting key parametric differences.

AI replacement insight

Electrical riskmedium

Candidates may have different power ratings or TCRs requiring circuit analysis.

Package risklow

All viable candidates share the standard 2512 package.

Can it be replaced directly?

HoLRT2512-2W-680mR-1% is a strong candidate for replacement, matching resistance and tolerance while offering higher power handling. FRL2512FR620TS is a parametric alternative with notable deviations.

Best replacement path

Upgrade to a higher power (2W) resistor like Milliohm's HoLRT2512-2W-680mR-1% for improved thermal margin.

Main risk

The main risk is selecting a part with a worse Temperature Coefficient (TCR), which can impact circuit stability.

Recommended alternatives

A 0.68Ω, 1% resistor in the same 2512 package with a higher 2W power rating and superior TCR.

View details

Alternative comparison matrix

Feature / factor	25121WF680LT4E	HoLRT2512-2W-680mR-1%	FRL2512FR620TS	Compatibility / risk
Package	2512	2512	2512	2512 — Same EIA package code.; FRL2512FR620TS: Same EIA package code.
Resistance	0.68Ω	0.68Ω	0.62Ω	0.68Ω / 0.62Ω — Resistance value matches.; FRL2512FR620TS: Resistance is ~9% lower than target.
Power	1.0W	2.0W	1.0W	2.0W / 1.0W — Higher power rating provides more thermal margin.; FRL2512FR620TS: Power rating matches.
Tolerance	±1%	±1%	-	±1% — Tolerance matches.
Tcr	Not specified	±50ppm/℃	±400 ppm/°C	±50ppm/℃ / ±400 ppm/°C — Superior TCR improves stability over temperature.; FRL2512FR620TS: TCR is significantly worse, indicating lower stability.

Application & sourcing insights

Questions & answers

HoLRT2512-2W-680mR-1% from Milliohm is a strong candidate, offering an upgraded 2W power rating and better TCR in the same 2512 package. Electrical validation is still recommended.