
FH (Guangdong Fenghua Advanced Tech)
This FH resistor is a strong pin-to-pin match with identical key electrical and physical parameters.
Find pin-compatible and parametric alternatives for the FOJAN FRC0603F3903TS, a 390kΩ 1% 0.1W 0603 chip resistor. Review key parameter differences before substitution.
Using a part with different resistance requires circuit analysis to ensure performance is not compromised.
All recommended alternatives use the same 0603 package, ensuring physical compatibility.
Yes, RS-03K3903FT from FH (Guangdong Fenghua Advanced Tech) is a direct pin-to-pin replacement for FRC0603F3903TS.
The most direct replacement is RS-03K3903FT, which matches all key electrical and physical specifications.
The primary risk involves using parametric alternatives with different resistance values, which could alter circuit behavior.

FH (Guangdong Fenghua Advanced Tech)
This FH resistor is a strong pin-to-pin match with identical key electrical and physical parameters.
| Feature / factor | FRC0603F3903TS | RS-03K3903FT | FRC0603F3833TS | FRC0603F4023TS | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0603 | 0603 | 0603 | 0603 | 0603 — Identical package ensures form and fit.; FRC0603F3833TS: Identical package ensures form and fit.; FRC0603F4023TS: Identical package ensures form and fit.; RC0603FR-07402KL: Identical package ensures form and fit. |
| Resistance | 390kΩ | 390kΩ | 383kΩ | 402kΩ | 390kΩ / 383kΩ / 402kΩ — Resistance value is identical.; FRC0603F3833TS: Resistance is 1.8% lower. Verify circuit tolerance.; FRC0603F4023TS: Resistance is 3.1% higher. Verify circuit tolerance.; RC0603FR-07402KL: Resistance is 3.1% higher. Verify circuit tolerance. |
| Tolerance | ±1% | ±1% | ±1% | ±1% | ±1% — Tolerance is identical.; FRC0603F3833TS: Tolerance is identical.; FRC0603F4023TS: Tolerance is identical.; RC0603FR-07402KL: Tolerance is identical. |
| Power | 0.1W | 0.1W | 0.1W | 0.1W | 0.1W — Power rating is identical.; FRC0603F3833TS: Power rating is identical.; FRC0603F4023TS: Power rating is identical.; RC0603FR-07402KL: Power rating is identical. |
| Tcr | ±100ppm/℃ | ±100ppm/℃ | - | - | ±100ppm/℃ — Temperature coefficient is identical. |
The best alternative is RS-03K3903FT from FH. It is a pin-compatible replacement with identical resistance, tolerance, power rating, and package.