
FOJAN
A potential pin-compatible replacement with matching resistance, tolerance, power rating, and 0402 package.
Reviewing alternatives for the RC-02U5R10FT, a 5.1Ω 1% 0.0625W 0402 thick film resistor. Key considerations for substitutes are maintaining resistance, tolerance, and power rating in the same 0402 package.
Using parts with different resistance or wider tolerance can impact circuit accuracy.
Most candidates use the same 0402 package, ensuring physical compatibility.
Direct replacement for RC-02U5R10FT should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
The best path is finding a resistor with identical 5.1Ω resistance, ±1% tolerance, and 0.0625W power rating in an 0402 package, like FRC0402F5R10TS.
The main risk is using a substitute with a different resistance value or a wider tolerance (e.g., ±5%), which could affect circuit performance.

FOJAN
A potential pin-compatible replacement with matching resistance, tolerance, power rating, and 0402 package.
| Feature / factor | RC-02U5R10FT | FRC0402F5R10TS | FRC0402J5R1 TS | FRC0402F4R99TS | Compatibility / risk |
|---|---|---|---|---|---|
| Resistance | 5.1Ω | 5.1Ω | 5.1Ω | 4.99Ω | 5.1Ω / 4.99Ω — Exact match.; FRC0402J5R1 TS: Exact match.; FRC0402F4R99TS: Slightly lower resistance. |
| Tolerance | ±1% | ±1% | ±5% | ±1% | ±1% / ±5% — Exact match.; FRC0402J5R1 TS: Wider tolerance may affect circuit precision.; FRC0402F4R99TS: Exact match. |
| Power | 0.0625W | 0.0625W | 0.0625W | 0.0625W | 0.0625W — Exact match.; FRC0402J5R1 TS: Exact match.; FRC0402F4R99TS: Exact match. |
| Package | 0402 | 0402 | 0402 | 0402 | 0402 — Same package code.; FRC0402J5R1 TS: Same package code.; FRC0402F4R99TS: Same package code. |
| Tcr | ±400ppm/℃ | ±400 ppm/°C | - | - | ±400 ppm/°C — Exact match. |
Verified drop-in options for RC-02U5R10FT 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.