AF0402FR-0751KL
Yageo
Needs validationlow risk
Strong match with identical key specs and package, plus added anti-sulfuration feature.
Best Alternatives to AC0402FR-0751KL
Yageo AC0402FR-0751KL is a popular AEC-Q200 automotive-grade 51kΩ 1% thick film resistor in a 0402 package. Finding a suitable replacement requires matching its automotive qualification and key electrical parameters.
AI replacement insight
Electrical riskhigh
Risk is high if a non-AEC-Q200 or parametrically different part is used.
Package risklow
All candidates use the same 0402 package, so physical fit is not a concern.
Can it be replaced directly?
Direct replacement for AC0402FR-0751KL should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
Yageo's AF0402FR-0751KL is the best replacement path, offering identical specifications plus an anti-sulfuration feature.
Main risk
The primary risk is substituting with a non-automotive grade (non-AEC-Q200) component, which could compromise circuit reliability and safety.
Recommended alternatives
3Alternative comparison matrix
| Feature / factor | AC0402FR-0751KL | AF0402FR-0751KL | RC-02K5112FT | RT0402BRD0751KL | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0402 | 0402 | 0402 | 0402 | 0402 — Package size matches.; RC-02K5112FT: Package size matches.; RT0402BRD0751KL: Package size matches. |
| Resistance | 51 kΩ | 51 kΩ | 51.1 kΩ | - | 51 kΩ / 51.1 kΩ — Resistance value matches.; RC-02K5112FT: Slightly different resistance value, within tolerance but should be checked. |
| Tolerance | ±1% | ±1% | - | ±0.1% | ±1% / ±0.1% — Resistance tolerance matches.; RT0402BRD0751KL: Tighter tolerance may be an upgrade. |
| Power | 1/16 W | 1/16 W | - | - | 1/16 W — Power rating matches. |
| Application | AEC-Q200 | AEC-Q200, Anti-Sulfurated | Commercial | Commercial | AEC-Q200, Anti-Sulfurated / Commercial — Matches automotive grade and adds anti-sulfuration feature.; RC-02K5112FT: Lacks AEC-Q200 automotive qualification.; RT0402BRD0751KL: Lacks AEC-Q200 automotive qualification. |
| Tcr | ±100 ppm/°C | - | - | 25 ppm/°C | 25 ppm/°C — Better temperature stability. |
| Technology | Thick Film | - | - | Thin Film | Thin Film — Different resistor technology may affect noise and pulse handling. |
Application & sourcing insights
Questions & answers
Verified drop-in options for AC0402FR-0751KL 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.