AC0402FR-0739KL
Yageo
Needs validationmedium risk
Pin-compatible 39kΩ 1% 0402 resistor from Yageo. AEC-Q200 qualification makes it suitable for automotive use.
Best Alternatives to RC-02K3902FT
Find verified substitutes for the FH RC-02K3902FT, a 39kΩ 1% 0402 thick film resistor. This guide provides pin-compatible alternatives and upgrade options, with detailed engineering analysis.
AI replacement insight
Electrical risklow
Low if key parameters (R, Tol, P, TCR) match.
Package risklow
0402 is a standard package with consistent dimensions.
Sourcing riskmedium
Multiple vendors exist, but check regional stock.
Can it be replaced directly?
Direct replacement for RC-02K3902FT should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
Start with Datasheet verified or Strong match candidates for RC-02K3902FT, then review parametric alternatives for package and electrical fit.
Main risk
The main risk is selecting a part with a different resistance value or technology (e.g., thin film) without verifying application compatibility.
Recommended alternatives
4Alternative comparison matrix
| Feature / factor | RC-02K3902FT | AC0402FR-0739KL | RC0402FR-0739K2L | FRC0402F3902TS | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0402 | 0402 | 0402 | 0402 | 0402 — Same EIA package size.; RC0402FR-0739K2L: Same EIA package size.; FRC0402F3902TS: Same EIA package size.; RT0402BRD0739KL: Same EIA package size. |
| Resistance | 39kΩ | 39kΩ | 39.2kΩ | 39kΩ | 39kΩ / 39.2kΩ — Resistance values match.; RC0402FR-0739K2L: Value is within target's ±1% tolerance band.; FRC0402F3902TS: Resistance values match. |
| Tolerance | ±1% | ±1% | ±1% | ±1% | ±1% / ±0.1% — Tolerance values match.; RC0402FR-0739K2L: Tolerance values match.; FRC0402F3902TS: Tolerance values match.; RT0402BRD0739KL: Tighter tolerance is an upgrade. |
| Power | 0.0625W | 0.0625W | 0.0625W | 0.0625W | 0.0625W — Power ratings match. Note: source data had error, corrected based on summary.; RC0402FR-0739K2L: Power ratings match.; FRC0402F3902TS: Power ratings match. Note: source data had error, corrected based on summary. |
| Tcr | ±100ppm/℃ | ±100 ppm/°C | - | - | ±100 ppm/°C / 25 ppm/°C — Temperature coefficients match.; RT0402BRD0739KL: Lower TCR provides better stability. |
| Application | General Purpose | AEC-Q200 | - | - | AEC-Q200 — Candidate is automotive qualified, an upgrade. |
| Technology | Thick Film | - | - | - | Thin Film — Different resistor technology may affect performance. |
Application & sourcing insights
Questions & answers
Verified drop-in options for RC-02K3902FT 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.