
UNI-ROYAL
A 0805 resistor with higher resistance (0.82Ω) and no power safety margin, but a better TCR.
Finding a substitute for the UNI-ROYAL 0805W8F750LT5E, a 0.75Ω 1% 0.125W 0805 resistor, requires careful review of power rating and temperature coefficient (TCR). While several parts match the form factor, key electrical parameters must be verified for reliability.
All candidates lack the 1.5x power rating safety margin specified by engineering rules.
All candidates match the 0805 package, ensuring form and fit compatibility.
No direct drop-in replacement has been identified. Candidates like FRL0805FR750TS match resistance but lack the recommended power safety margin and may have a worse TCR, requiring engineering validation.
Find a candidate with identical resistance and tolerance, but with a power rating of at least 0.1875W (1.5x the target's 0.125W) to ensure a proper safety margin.
The main risk is substituting with a resistor that has an identical power rating, which eliminates the standard engineering safety margin and could lead to premature failure under load.

UNI-ROYAL
A 0805 resistor with higher resistance (0.82Ω) and no power safety margin, but a better TCR.
| Feature / factor | 0805W8F750LT5E | 0805W8F820LT5E | FRL0805FR750TS | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Resistance | 0.75 Ω | 0.82 Ω | 0.75 Ω | 0.82 Ω / 0.75 Ω — Resistance is +9.3% higher than target.; FRL0805FR750TS: Resistance value matches target. | |
| Power | 0.125 W | 0.125 W | 0.125 W | 0.125 W — Fails hard rule ER-RES-003 (Power < 1.5x target). No safety margin.; FRL0805FR750TS: Fails hard rule ER-RES-003 (Power < 1.5x target). No safety margin. | |
| Package | 0805 | 0805 | 0805 | 0805 — Package size matches.; FRL0805FR750TS: Package size matches. | |
| Tcr | Unknown | ±100 ppm/°C | ±400 ppm/°C | ±100 ppm/°C / ±400 ppm/°C — TCR is excellent and likely an upgrade.; FRL0805FR750TS: Potentially higher TCR than target; may affect precision over temperature. | |
| Tolerance | ±1% | - | ±1% | ±1% — Tolerance matches target. |
FRL0805FR750TS is a potential alternative as it matches resistance, tolerance, and package. However, it does not meet the recommended 1.5x power rating safety margin and has a higher TCR, requiring careful review.