
UNI-ROYAL
A potential pin-compatible substitute with matching resistance and package; review required.
Find and compare substitutes for the FRC0402F8661TS, an 8.66kΩ 1% 0402 chip resistor. Review pin-compatible options and parametric alternatives with different resistance values.
Resistance mismatch in most candidates; missing specs in the best candidate.
All candidates share the same 0402 package.
Direct replacement for FRC0402F8661TS should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
The closest match is 0402WGF8661TCE, which shares key parameters but requires datasheet verification for voltage and TCR. For applications tolerant of a ~5% resistance change, several higher-precision Yageo parts are available.
The primary risk is substituting with a part that has a different resistance value, which can alter circuit behavior. For the closest match, missing datasheet parameters (voltage, TCR) pose a risk.

UNI-ROYAL
A potential pin-compatible substitute with matching resistance and package; review required.
| Feature / factor | FRC0402F8661TS | 0402WGF8661TCE | FRC0402F9101TS | RT0402BRD079K1L | Compatibility / risk |
|---|---|---|---|---|---|
| Resistance | 8.66 kΩ | 8.66 kΩ | 9.1 kΩ | 9.1 kΩ | 8.66 kΩ / 9.1 kΩ — Exact match.; FRC0402F9101TS: Resistance differs by +5.1%.; RT0402BRD079K1L: Resistance differs by +5.1%. |
| Tolerance | ±1% | ±1% | ±1% | ±0.1% | ±1% / ±0.1% — Exact match.; FRC0402F9101TS: Tolerance matches.; RT0402BRD079K1L: Tighter tolerance is an upgrade. |
| Power | 1/16W | 1/16W | - | - | 1/16W — Power rating matches. |
| Package | 0402 | 0402 | 0402 | 0402 | 0402 — Package size matches.; FRC0402F9101TS: Package size matches.; RT0402BRD079K1L: Package size matches. |
| Tcr | ±100 ppm/°C | Unknown | ±100 ppm/°C | 25 ppm/°C | Unknown / ±100 ppm/°C / 25 ppm/°C — Candidate TCR not specified in datasheet.; FRC0402F9101TS: TCR matches.; RT0402BRD079K1L: Lower TCR is an upgrade. |
Verified drop-in options for FRC0402F8661TS 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.