
FOJAN
Strongest alternative from the same series, with a very close resistance of 18kΩ.
Finding a substitute for the FRC0402F1782TS 17.8kΩ resistor involves considering similar 0402 resistors with slightly different resistance values. Several options from FOJAN and Yageo offer comparable or upgraded performance.
Resistance differs by 1-5%. Circuit tolerance must be verified.
All candidates share the same 0402 package, ensuring physical compatibility.
No direct, identical replacement was found. The closest options have slightly different resistance values, such as 18.0kΩ or 18.2kΩ.
Use FRC0402F1802TS for a minimal change or RT0402BRD0718KL for a precision upgrade.
The primary risk is the slight mismatch in resistance, which could affect circuit performance if the value is critical.

FOJAN
Strongest alternative from the same series, with a very close resistance of 18kΩ.
| Feature / factor | FRC0402F1782TS | FRC0402F1802TS | FRC0402F1822TS | RC0402FR-0718K7L | Compatibility / risk |
|---|---|---|---|---|---|
| Resistance | 17.8 kΩ | 18 kΩ | 18.2 kΩ | 18.7 kΩ | 18 kΩ / 18.2 kΩ / 18.7 kΩ — +1.12% deviation, just outside target tolerance.; FRC0402F1822TS: +2.25% deviation from target.; RC0402FR-0718K7L: +5.05% deviation from target.; RT0402BRD0718K2L: +2.25% deviation from target. |
| Tolerance | ±1% | ±1% | ±1% | ±1% | ±1% / ±0.1% — matched; FRC0402F1822TS: matched; RC0402FR-0718K7L: matched; RT0402BRD0718K2L: Tighter tolerance than target. |
| Tcr | ±100 ppm/°C | ±100 ppm/°C | ±100 ppm/°C | ±100 ppm/°C | ±100 ppm/°C / 25 ppm/°C — matched; FRC0402F1822TS: matched; RC0402FR-0718K7L: matched; RT0402BRD0718K2L: Better temperature stability. |
| Package | 0402 | 0402 | 0402 | 0402 | 0402 — matched; FRC0402F1822TS: matched; RC0402FR-0718K7L: matched; RT0402BRD0718K2L: matched |
FRC0402F1802TS from FOJAN is a strong alternative, offering the same specifications with a very close resistance of 18kΩ (+1.12% difference). For higher precision, Yageo's RT0402BRD0718KL is an excellent upgrade.