
TAI-TECH
A 3W power upgrade in the same 2512 package with identical resistance and tolerance.
The UNI-ROYAL 25121WF800MT4E is a 1W, 80mΩ thick film chip resistor in a 2512 package. Several upgrade options with higher power ratings are available for enhanced reliability.
Low risk if selecting an upgrade with matched resistance and higher power rating.
Many alternatives exist in the standard 2512 package, ensuring physical compatibility.
Availability of specific MPNs can vary. Consider qualifying multiple upgrade options.
Yes, several direct replacements exist, primarily as upgrades. The TAI-TECH RLP25FEGR080 is a strong candidate with a higher power rating.
Upgrade to a higher power metal foil resistor like TAI-TECH RLP25FEGR080 for improved reliability and thermal performance.
The main risk is using a part with an insufficient power rating or different resistance value, which could lead to circuit failure.

TAI-TECH
A 3W power upgrade in the same 2512 package with identical resistance and tolerance.
| Feature / factor | 25121WF800MT4E | RLP25FEGR080 | RLP25FEER080 | HoYLR2512-3W-80mR-1% | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 2512 | 2512 | 2512 | 2512 | 2512 — Same EIA package size.; RLP25FEER080: Same EIA package size.; HoYLR2512-3W-80mR-1%: Same EIA package size.; RLP25FEGR075: Same EIA package size. |
| Power | 1.0W | 3.0W | 2.0W | 3.0W | 3.0W / 2.0W — Higher power rating provides greater safety margin.; RLP25FEER080: Higher power rating provides greater safety margin.; HoYLR2512-3W-80mR-1%: Higher power rating provides greater safety margin.; RLP25FEGR075: Higher power rating is a safe upgrade. |
| Resistance | 0.08Ω | 0.08Ω | 0.08Ω | 0.08Ω | 0.08Ω / 0.075Ω — Identical resistance value.; RLP25FEER080: Identical resistance value.; HoYLR2512-3W-80mR-1%: Identical resistance value.; RLP25FEGR075: Resistance differs by 6.25%, outside tolerance band. |
| Tolerance | 1.0% | 1.0% | 1.0% | 1.0% | 1.0% — Identical precision.; RLP25FEER080: Identical precision.; HoYLR2512-3W-80mR-1%: Identical precision.; RLP25FEGR075: Identical precision. |
| Tcr | Not specified | ±50ppm/℃ | - | - | ±50ppm/℃ — Superior TCR for better stability. |
The TAI-TECH RLP25FEGR080 is an excellent upgrade, offering a higher 3W power rating and superior metal foil technology in the same 2512 package with identical resistance and tolerance.