
UNI-ROYAL
Strong candidate from UNI-ROYAL matching all key specs and package. Requires datasheet review.
Find substitutes for the FH RS-03K20R0FT, a 20Ω ±1% 0.1W 0603 thick film resistor. This page analyzes pin-compatible and parametric alternatives from various manufacturers.
Risk is low for pin-compatible parts but medium for parametric alternatives with different resistance or tolerance.
All candidates use the same 0603 package, minimizing physical layout risks.
Multiple alternatives are available from different manufacturers, indicating good supply chain options.
Yes, parts like FOJAN's FRC0603F20R0TS and UNI-ROYAL's 0603WAF200JT5E are strong candidates, matching all key electrical parameters and package size.
Start with Datasheet verified or Strong match candidates for RS-03K20R0FT, then review parametric alternatives for package and electrical fit.
The main risk is using a parametric alternative with a different resistance (22Ω) or wider tolerance (±5%) without verifying its impact on circuit performance.

UNI-ROYAL
Strong candidate from UNI-ROYAL matching all key specs and package. Requires datasheet review.
| Feature / factor | RS-03K20R0FT | 0603WAF200JT5E | FRC0603F20R0TS | 0603WAJ0200T5E | Compatibility / risk |
|---|---|---|---|---|---|
| Resistance | 20 Ω | 20 Ω | - | - | 20 Ω — Exact match. |
| Tolerance | ±1% | ±1% | - | - | ±5% — Wider tolerance than target's ±1%. |
| Power | 0.1 W | 0.1 W | - | - | 0.1 W — Exact match. |
| Tcr | ±100ppm/℃ | ±100 ppm/°C | - | - | ±100 ppm/°C — Exact match. |
| Package | 0603 | 0603 | - | - | 0603 — Same package code. |
Verified drop-in options for RS-03K20R0FT 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.