AC0603FR-074K3L
Yageo
Needs validationlow risk
Yageo AC0603FR-074K3L is a strong pin-compatible alternative with matching key parameters and added AEC-Q200 automotive qualification.
Best Alternatives to RS-03K4301FT
Find suitable replacements for the RS-03K4301FT, a 4.3kΩ 1% 0.1W 0603 thick film resistor. We've analyzed pin-compatible and parametric alternatives to help you source with confidence.
AI replacement insight
Electrical riskmedium
Risk is medium if selecting a part with a different resistance value; low for pin-compatible options.
Package risklow
All recommended alternatives use the standard 0603 package.
Sourcing risklow
Multiple viable alternatives from different manufacturers are available.
Can it be replaced directly?
Direct replacement for RS-03K4301FT should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
Start with Datasheet verified or Strong match candidates for RS-03K4301FT, then review parametric alternatives for package and electrical fit.
Main risk
The main risk is using a part with a different resistance value, such as 4.7kΩ, which requires circuit validation.
Recommended alternatives
3Alternative comparison matrix
| Feature / factor | RS-03K4301FT | AC0603FR-074K3L | FRC0603F4321TS | WR06X4701FTL | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0603 | 0603 | 0603 | 0603 (1608 Metric) | 0603 / 0603 (1608 Metric) — Form factor matches.; FRC0603F4321TS: Form factor matches.; WR06X4701FTL: Form factor matches. |
| Resistance | 4.3kΩ | 4.3kΩ | 4.32kΩ | 4.7kΩ | 4.3kΩ / 4.32kΩ / 4.7kΩ — Resistance value matches.; FRC0603F4321TS: Slight deviation from target value.; WR06X4701FTL: Resistance is a different standard value. |
| Tolerance | ±1% | ±1% | ±1% | ±1% | ±1% — Tolerance matches.; FRC0603F4321TS: Tolerance matches.; WR06X4701FTL: Tolerance matches. |
| Power | 0.1W | 0.1W | 0.1W | 0.1W | 0.1W — Power rating matches.; FRC0603F4321TS: Power rating matches.; WR06X4701FTL: Power rating matches. |
| Tcr | ±100ppm/℃ | ±100 ppm/°C | ±100 ppm/°C | - | ±100 ppm/°C — Temperature coefficient matches.; FRC0603F4321TS: Temperature coefficient matches. |
| Application | Commercial | AEC-Q200 | - | - | AEC-Q200 — Candidate is automotive qualified. |
| Technology | Thick Film | - | - | Thick Film | Thick Film — Resistor technology matches. |
Application & sourcing insights
Questions & answers
Verified drop-in options for RS-03K4301FT 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.