AC0603FR-0739KL
Yageo
Needs validationlow risk
AEC-Q200 qualified upgrade from Yageo with tighter tolerance (±1%) and better TCR.
Best Alternatives to RC0603JR-0739KL
Find substitutes for the Yageo RC0603JR-0739KL, a general-purpose 39kΩ 5% 0603 resistor. Explore pin-compatible upgrades with tighter tolerance and automotive-grade options.
AI replacement insight
Electrical risklow
Upgrading tolerance and TCR is a low-risk improvement. Changing to Thin Film requires checking pulse handling.
Package risklow
All strong candidates share the same 0603 package, ensuring form and fit compatibility.
Sourcing risklow
This is a very common resistor value with many available sources and alternatives.
Can it be replaced directly?
Yes, AC0603FR-0739KL from Yageo is an excellent pin-compatible upgrade with tighter tolerance and AEC-Q200 qualification.
Best replacement path
Upgrade to a 1% tolerance part like AC0603FR-0739KL or FRC0603F3902TS for better performance.
Main risk
For most applications, the risk is low as the target is a general-purpose part. Upgrades are generally safe.
Recommended alternatives
4Alternative comparison matrix
| Feature / factor | RC0603JR-0739KL | AC0603FR-0739KL | FRC0603F3902TS | RT0603BRD0738K3L | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0603 | 0603 | 0603 | 0603 | 0603 — Same package and pin count.; FRC0603F3902TS: Same package and pin count.; RT0603BRD0738K3L: Same package.; RT0603BRD0739K2L: Same package. |
| Resistance | 39kΩ | 39kΩ | 39kΩ | 38.3kΩ | 39kΩ / 38.3kΩ / 39.2kΩ — Resistance value matches.; FRC0603F3902TS: Resistance value matches.; RT0603BRD0738K3L: Value is within target's ±5% tolerance.; RT0603BRD0739K2L: Value is within target's ±5% tolerance. |
| Tolerance | ±5% | ±1% | ±1% | ±0.1% | ±1% / ±0.1% — Tighter tolerance is a safe upgrade.; FRC0603F3902TS: Tighter tolerance is a safe upgrade.; RT0603BRD0738K3L: Significant upgrade to high precision.; RT0603BRD0739K2L: Significant upgrade to high precision. |
| Application | General Purpose | AEC-Q200 | - | - | AEC-Q200 — Automotive grade is an upgrade over general purpose. |
| Tcr | ±200 ppm/°C | - | ±100 ppm/°C | - | ±100 ppm/°C / 25 ppm/°C — Improved temperature stability.; RT0603BRD0739K2L: Significant upgrade in temperature stability. |
| Technology | Thick Film | - | Thick Film | Thin Film | Thick Film / Thin Film — Same resistor technology.; RT0603BRD0738K3L: Thin film offers better stability but may have different pulse handling.; RT0603BRD0739K2L: Thin film offers better stability but may have different pulse handling. |
Application & sourcing insights
Questions & answers
The best alternative is AC0603FR-0739KL. It's an AEC-Q200 qualified upgrade from the same manufacturer (Yageo) with a tighter ±1% tolerance and better TCR, making it a robust, pin-compatible replacement.