
FOJAN
Strong parametric match from FOJAN in the same 0603 package with identical resistance, tolerance, and power rating.
Finding a substitute for the RS-03K3402FT, a 34kΩ 1% 0.1W 0603 resistor, is straightforward. FRC0603F3402TS provides a direct parametric match, while other options offer different resistance values or higher precision for design flexibility.
Most alternatives have different resistance values. Thin film parts have different noise/pulse characteristics.
All suggested candidates are in the same 0603 package, ensuring form and fit compatibility.
Alternatives are from major manufacturers, but regional availability should be confirmed.
Direct replacement for RS-03K3402FT should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
For a direct match, use FRC0603F3402TS. For higher precision applications where a resistance shift is tolerable, consider Yageo RT-series parts like RT0603BRD0732KL.
The primary risk when substituting is the change in resistance value for parametric alternatives, which can alter circuit behavior and requires engineering validation.

FOJAN
Strong parametric match from FOJAN in the same 0603 package with identical resistance, tolerance, and power rating.
| Feature / factor | RS-03K3402FT | FRC0603F3402TS | RS-03K3322FT | RS-03K3602FT | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0603 | 0603 | 0603 | 0603 | 0603 — Same package and pin count.; RS-03K3322FT: Same package and pin count.; RS-03K3602FT: Same package and pin count.; RT0603BRD0732KL: Same package and pin count. |
| Resistance | 34kΩ | 34kΩ | 33.2kΩ | 36kΩ | 34kΩ / 33.2kΩ / 36kΩ / 32kΩ — Resistance value is identical.; RS-03K3322FT: Resistance is ~2.4% lower. Requires circuit evaluation.; RS-03K3602FT: Resistance is ~5.9% higher. Requires circuit evaluation.; RT0603BRD0732KL: Resistance is ~5.9% lower. Requires circuit evaluation. |
| Tolerance | ±1% | ±1% | ±1% | ±1% | ±1% / ±0.1% — Tolerance is identical.; RS-03K3322FT: Tolerance is identical.; RS-03K3602FT: Tolerance is identical.; RT0603BRD0732KL: Tighter tolerance may be beneficial. |
| Power | 0.1W | 0.1W | - | 0.1W | 0.1W — Power rating is identical.; RS-03K3602FT: Power rating is identical. |
| Tcr | ±100ppm/℃ | ±100 ppm/°C | - | - | ±100 ppm/°C / 25 ppm/°C — Temperature coefficient is identical.; RT0603BRD0732KL: Better TCR provides higher stability over temperature. |
| Technology | Thick Film | - | - | - | Thin Film — Different technology may affect noise or pulse handling. |
Verified drop-in options for RS-03K3402FT 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.