
FOJAN
A 0603 resistor with matching resistance and power, but a wider ±5% tolerance.
RS-03K1802FT is a 18kΩ, 1% tolerance, 0.1W thick film resistor in a 0603 package. While no direct drop-in replacements are identified, several parametric alternatives with different resistance or tolerance values are available for consideration.
Resistance or tolerance mismatch requires circuit analysis.
All candidates share the same 0603 package.
No, there are no direct drop-in replacements in this list. All candidates have different tolerance or resistance values requiring review.
Find a 18kΩ, 1%, 0.1W, 0603 resistor. If unavailable, FRC0603J183 TS is an option if 5% tolerance is acceptable. Otherwise, review nearby 1% resistance values.
Circuit malfunction due to incorrect resistance value or tolerance, affecting precision analog functions, voltage dividers, or feedback loops.

FOJAN
A 0603 resistor with matching resistance and power, but a wider ±5% tolerance.
| Feature / factor | RS-03K1802FT | FRC0603J183 TS | RS-03K1692FT | RS-03K1872FT | Compatibility / risk |
|---|---|---|---|---|---|
| Resistance | 18kΩ | 18kΩ | 16.9kΩ | 18.7kΩ | 18kΩ / 16.9kΩ / 18.7kΩ — Nominal resistance matches.; RS-03K1692FT: Resistance value is ~6.1% lower.; RS-03K1872FT: Resistance value is ~3.9% higher.; RC0603FR-0718K7L: Resistance value is ~3.9% higher. |
| Tolerance | 1% | 5% | 1% | 1% | 5% / 1% — Tolerance is significantly wider.; RS-03K1692FT: Tolerance matches.; RS-03K1872FT: Tolerance matches.; RC0603FR-0718K7L: Tolerance matches. |
| Power | 0.1W | 0.1W | 0.1W | 0.1W | 0.1W — Power rating matches.; RS-03K1692FT: Power rating matches.; RS-03K1872FT: Power rating matches.; RC0603FR-0718K7L: Power rating matches. |
| Package | 0603 | 0603 | 0603 | 0603 | 0603 — Package size matches.; RS-03K1692FT: Package size matches.; RS-03K1872FT: Package size matches.; RC0603FR-0718K7L: Package size matches. |
| Tcr | ±100ppm/℃ | ±100 ppm/°C | - | - | ±100 ppm/°C — Temperature coefficient matches. |
The best alternative depends on your circuit's needs. FRC0603J183 TS matches the 18kΩ resistance but has a wider 5% tolerance. Parts like RS-03K1872FT (18.7kΩ) match the 1% tolerance but have a different resistance. Always verify circuit impact.