
FOJAN
Form-fit compatible 0603 resistor, but with higher resistance (422kΩ), wider tolerance (±1%), and higher TCR.
Yageo RT0603BRD07390KL is a high-precision 390kΩ thin film resistor with a tight ±0.1% tolerance and 25 ppm/°C TCR. Finding a direct replacement requires matching these critical precision specifications.
All candidates have worse tolerance, TCR, and different technology.
All candidates are in the same 0603 package.
High-precision resistors can have limited availability.
No direct, drop-in replacements were identified. All candidates are significant downgrades in precision and stability.
Search for thin film 0603 resistors with 390kΩ resistance, ≤±0.1% tolerance, and ≤25 ppm/°C TCR.
Loss of circuit accuracy and stability due to wider tolerance and higher temperature drift.

FOJAN
Form-fit compatible 0603 resistor, but with higher resistance (422kΩ), wider tolerance (±1%), and higher TCR.
| Feature / factor | RT0603BRD07390KL | FRC0603F4223TS | FRC0603F3653TS | RC0603FR-07365KL | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0603 | 0603 | 0603 | 0603 | 0603 — Package size matches.; FRC0603F3653TS: Package size matches.; RC0603FR-07365KL: Package size matches. |
| Resistance | 390kΩ | 422kΩ | 365kΩ | 365kΩ | 422kΩ / 365kΩ — Resistance is 8.2% higher.; FRC0603F3653TS: Resistance is 6.4% lower.; RC0603FR-07365KL: Resistance is 6.4% lower. |
| Tolerance | ±0.1% | ±1% | ±1% | ±1% | ±1% — Tolerance is 10x wider, a significant precision loss.; FRC0603F3653TS: Tolerance is 10x wider, a significant precision loss.; RC0603FR-07365KL: Tolerance is 10x wider, a significant precision loss. |
| Tcr | 25 ppm/°C | ±100 ppm/°C | ±100 ppm/°C | ±100 ppm/°C | ±100 ppm/°C — Temperature drift is 4x higher, reducing stability.; FRC0603F3653TS: Temperature drift is 4x higher, reducing stability.; RC0603FR-07365KL: Temperature drift is 4x higher, reducing stability. |
| Technology | Thin Film | Thick Film | Thick Film | Thick Film | Thick Film — Different resistor technology affects noise and stability.; FRC0603F3653TS: Different resistor technology affects noise and stability.; RC0603FR-07365KL: Different resistor technology affects noise and stability. |
A true alternative must match the 390kΩ resistance, ±0.1% tolerance, 25 ppm/°C TCR, and thin film technology. No direct replacements were found; available options are lower-precision thick film resistors that require careful circuit evaluation.