
Yageo
A pin-compatible alternative from Yageo with matching key electrical specifications.
Reviewing alternatives for the RS-05K30R0FT, a 30Ω 1% 0.125W 0805 thick film resistor. Key considerations for substitutes include matching resistance, tolerance, and power rating, with several pin-compatible and parametric options available.
All candidates use the same 0805 package, ensuring physical compatibility.
Risk varies by candidate. Mismatches in tolerance, TCR, or resistance require engineering validation.
This is a common resistor value and package, with many alternatives available from major manufacturers.
Direct replacement for RS-05K30R0FT should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
The Yageo RC0805FR-0730RL is the strongest candidate, appearing to be a pin-to-pin match for all critical parameters.
The primary risk is substituting with a part that has a looser tolerance (e.g., 5% vs 1%) or a different resistance value, which can impact circuit accuracy and performance.

Yageo
A pin-compatible alternative from Yageo with matching key electrical specifications.
| Feature / factor | RS-05K30R0FT | RC0805FR-0730RL | RT0805BRD0730RL | FRC0805J300 TS | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0805 | 0805 | 0805 | 0805 | 0805 — Matches form factor.; RT0805BRD0730RL: Matches form factor.; FRC0805J300 TS: Matches form factor.; RS-05K33R0FT: Matches form factor. |
| Resistance | 30.0 Ω | 30.0 Ω | - | - | 30.0 Ω / 33.0 Ω — Identical resistance value.; RS-05K33R0FT: 10% higher resistance value. |
| Tolerance | 1.0% | 1.0% | 0.1% | 5.0% | 1.0% / 0.1% / 5.0% — Identical precision.; RT0805BRD0730RL: Tighter tolerance is a performance upgrade.; FRC0805J300 TS: Significantly looser tolerance.; RS-05K33R0FT: Matches precision. |
| Power | 0.125 W | 0.125 W | - | - | 0.125 W — Matches power rating. Input data had conflicts, but 1/8W is correct for 0805. |
| Tcr | ±100ppm/℃ | ±100 ppm/°C | 25 ppm/°C | ±400 ppm/°C | ±100 ppm/°C / 25 ppm/°C / ±400 ppm/°C — Matches temperature coefficient.; RT0805BRD0730RL: Lower TCR provides better stability over temperature.; FRC0805J300 TS: Much higher TCR, less stable. |
| Technology | Thick Film | - | Thin Film | - | Thin Film — Upgrade to thin film may affect pulse/noise behavior. |
Verified drop-in options for RS-05K30R0FT 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.