25121WF100KT4E
UNI-ROYAL
Needs validationmedium risk
25121WF100KT4E is a higher-power 1 Ω option but needs a 2512 footprint.
Best Alternatives to 1210W2F100KT5E
1210W2F100KT5E is a 1 Ω, ±1%, 0.5 W 1210 thick film resistor. The reviewed alternates need footprint or rating checks.
AI replacement insight
Electrical riskmedium
voltage margin and pulse rating need checks
Package riskhigh
kept options are 2512, not 1210
Firmware risklow
passive resistor
Sourcing risklow
kept options are indexed
Can it be replaced directly?
No verified pin-compatible replacement was found in this set.
Best replacement path
Use a same-footprint 1210 1 Ω part if available; otherwise review 25121WF100KT4E for a 2512 redesign.
Main risk
Package mismatch is the main risk.
Recommended alternatives
2Alternative comparison matrix
| Feature / factor | 1210W2F100KT5E | 25121WF100KT4E | FRP2512F1R00TS | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Resistance | 1 Ω | 1 Ω | - | 1 Ω — same value | |
| Tolerance | ±1% | ±1% | - | ±1% — same tolerance | |
| Power | 0.5 W | 1 W | - | 2 W — large margin | |
| Package | 1210 | 2512 | - | 2512 — PCB change needed | |
| Voltage | 200/500 V | 200/500 V | - | 200/400 V — overload lower |
Application & sourcing insights
Questions & answers
From this set, 25121WF100KT4E is closest electrically, but it is 2512 and needs PCB review.