AC0603FR-0739KL
Yageo
Needs validationlow risk
Automotive-grade (AEC-Q200) upgrade with tighter ±1% tolerance.
Best Alternatives to FRC0603J393 TS
FRC0603J393 TS is a general-purpose 39kΩ, 5% tolerance, 0.1W resistor in a 0603 package. Several alternatives exist, including direct upgrades with tighter tolerance and parametric options with different resistance values.
AI replacement insight
Electrical risklow
Low for tolerance upgrades; medium for parts with different resistance values.
Package risklow
All reviewed candidates are in the same 0603 package.
Sourcing risklow
Multiple vendors offer compatible parts, indicating good availability.
Can it be replaced directly?
Direct replacement for FRC0603J393 TS should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
Upgrade to a 39kΩ, 1% tolerance resistor like Yageo's AC0603FR-0739KL for improved precision and AEC-Q200 rating.
Main risk
The main risk is using a parametric alternative with a resistance value outside the original's ±5% tolerance, which requires circuit analysis.
Recommended alternatives
6Alternative comparison matrix
| Feature / factor | FRC0603J393 TS | AC0603FR-0739KL | FRC0603F3902TS | RS-03K3902FT | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0603 | 0603 | 0603 | 0603 | 0603 — Same package and pin count.; FRC0603F3902TS: Same package and pin count.; RS-03K3902FT: Same package and pin count.; RC0603FR-0737K4L: Same package and pin count. |
| Resistance | 39kΩ | 39kΩ | 39kΩ | 39kΩ | 39kΩ / 37.4kΩ — Nominal resistance is identical.; FRC0603F3902TS: Nominal resistance is identical.; RS-03K3902FT: Nominal resistance is identical.; RC0603FR-0737K4L: Resistance is within target's ±5% tolerance band. |
| Tolerance | ±5% | ±1% | ±1% | ±1% | ±1% — Candidate has tighter tolerance.; FRC0603F3902TS: Candidate has tighter tolerance.; RS-03K3902FT: Candidate has tighter tolerance.; RC0603FR-0737K4L: Candidate has tighter tolerance. |
| Application | General Purpose | AEC-Q200 | - | - | AEC-Q200 — Candidate is automotive grade. |
| Power | 0.1W | - | 0.1W | 0.1W | 0.1W — Power rating is identical. Original data had an error showing 1.0W.; RS-03K3902FT: Power rating is identical. |
Application & sourcing insights
Questions & answers
Verified drop-in options for FRC0603J393 TS 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.