AC0402FR-073K9L
Yageo
Needs validationlow risk
A direct parametric match in an 0402 package, with the added benefit of AEC-Q200 qualification.
Best Alternatives to FRC0402F3901TS
FRC0402F3901TS is a general-purpose 3.9kΩ, 1% tolerance, 1/16W thick film chip resistor in a standard 0402 package. Finding a suitable replacement involves matching these key parameters.
AI replacement insight
Electrical risklow
Low for matched parts like AC0402FR-073K9L; medium for parts with different resistance.
Package risklow
All reviewed candidates are in the same 0402 package.
Sourcing risklow
Candidates are from major manufacturers like Yageo, ensuring good availability.
Can it be replaced directly?
Yes, AC0402FR-073K9L from Yageo is a strong candidate for direct replacement, matching all key specs and adding AEC-Q200 qualification.
Best replacement path
For a direct functional match, AC0402FR-073K9L is a strong candidate. For higher precision needs, consider the thin-film RT0402BRD073K9L.
Main risk
The main risk is selecting a part with a different resistance value, which requires circuit re-evaluation. Other parametric differences like TCR or technology may affect performance in sensitive applications.
Recommended alternatives
6Alternative comparison matrix
| Feature / factor | FRC0402F3901TS | AC0402FR-073K9L | RT0402BRD073K9L | FRC0402F4221TS | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0402 | 0402 | 0402 | 0402 | 0402 — Same package and pin count.; RT0402BRD073K9L: Same package and pin count.; FRC0402F4221TS: Same package and pin count.; RC0402FR-073K74L: Same package and pin count. |
| Resistance | 3.9 kΩ, ±1% | 3.9 kΩ, ±1% | 3.9 kΩ | 4.22 kΩ | 3.9 kΩ, ±1% / 4.22 kΩ / 3.74 kΩ — Resistance and tolerance match.; RT0402BRD073K9L: Resistance value matches.; FRC0402F4221TS: Resistance is ~8.2% higher than target.; RC0402FR-073K74L: Resistance is ~4.1% lower than target. |
| Power | 1/16 W | 1/16 W | - | - | 1/16 W — Power rating matches. |
| Tcr | ±100 ppm/°C | ±100 ppm/°C | 25 ppm/°C | - | ±100 ppm/°C / 25 ppm/°C — Temperature coefficient matches.; RT0402BRD073K9L: Candidate has a better temperature coefficient. |
| Application | General Purpose | AEC-Q200 | - | - | AEC-Q200 — Candidate is automotive qualified. |
| Tolerance | ±1% | - | ±0.1% | ±1% | ±0.1% / ±1% — Candidate has tighter tolerance.; FRC0402F4221TS: Tolerance matches.; RC0402FR-073K74L: Tolerance matches. |
| Technology | Thick Film | - | Thin Film | - | Thin Film — Different resistor technology, may affect noise/stability. |
Application & sourcing insights
Questions & answers
AC0402FR-073K9L is an excellent alternative, offering the same key electrical parameters with the added benefit of AEC-Q200 automotive qualification. RT0402BRD073K9L is another strong option with tighter tolerance and TCR.