
FOJAN
Upgrade to ±1% tolerance in the same 2512 package. Max overload voltage is lower and requires review.
Find and compare replacements for the UNI-ROYAL 25121WJ0154T4E, a 150kΩ 1W 5% 2512 chip resistor. Alternatives with matching form-fit and tighter tolerance are available but may require electrical review.
Max overload voltage is lower on substitutes. Application must be checked.
Top candidates match the 2512 package, ensuring form-fit compatibility.
Yes, FRC2512J154 TS is a strong parametric match, but it has a lower max overload voltage (400V vs. 500V).
Upgrade to a ±1% tolerance part like FRC2512F1503TS for better precision, after verifying voltage requirements.
Lower maximum overload voltage on candidates (400V vs. target's 500V) may pose a risk in high-transient environments.

FOJAN
Upgrade to ±1% tolerance in the same 2512 package. Max overload voltage is lower and requires review.
| Feature / factor | 25121WJ0154T4E | FRC2512F1503TS | FRC2512J154 TS | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 2512 | 2512 | 2512 | 2512 — Same EIA package size.; FRC2512J154 TS: Same EIA package size. | |
| Tolerance | ±5% | ±1% | ±5% | ±1% / ±5% — Tighter tolerance is an upgrade.; FRC2512J154 TS: matched | |
| Power | 1 W | 1 W | 1 W | 1 W — matched; FRC2512J154 TS: matched | |
| Voltage | 500 V | 400 V | 400 V | 400 V — Lower max overload voltage.; FRC2512J154 TS: Lower max overload voltage. | |
| Resistance | 150 kΩ | - | 150 kΩ | 150 kΩ — matched |
Verified drop-in options for 25121WJ0154T4E are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.