PA1206FRF470R03L
Yageo
Needs validationlow risk
Strong alternative with matching core specs and AEC-Q200 qualification; review for TCR difference.
Best Alternatives to RLS12FTCR030
Finding a substitute for the RLS12FTCR030 1W 30mΩ current sense resistor involves matching resistance, power, tolerance, and package. Several alternatives exist, but careful review of TCR and secondary characteristics is required.
AI replacement insight
Electrical risklow
Key specs match well, but TCR difference requires review for high-precision circuits.
Package risklow
All viable candidates share the same 1206 package, ensuring physical compatibility.
Can it be replaced directly?
Direct replacement for RLS12FTCR030 should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
The Yageo PA1206FRF470R03L is the most promising path, offering matched primary specs and automotive qualification.
Main risk
The primary risk is a potential decrease in measurement stability due to a slightly weaker Temperature Coefficient of Resistance (TCR) in some alternatives.
Recommended alternatives
2Alternative comparison matrix
| Feature / factor | RLS12FTCR030 | PA1206FRF470R03L | FRM121WFR033TM | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 1206 | 1206 (3216 Metric) | 1206 | 1206 (3216 Metric) — Package size matches.; FRM121WFR033TM: Package size matches. | |
| Resistance | 0.03 Ω | 0.03 Ω | 0.033 Ω | 0.03 Ω / 0.033 Ω — Resistance value matches.; FRM121WFR033TM: Resistance is 10% higher. | |
| Power | 1.0 W | 1.0 W | 1.0 W | 1.0 W — Power rating matches.; FRM121WFR033TM: Power rating matches. | |
| Tolerance | ±1% | ±1% | ±1% | ±1% — Resistance tolerance matches.; FRM121WFR033TM: Resistance tolerance matches. | |
| Tcr | ±50 ppm/℃ | ±75 ppm/℃ | - | ±75 ppm/℃ — Candidate TCR is slightly weaker, may affect precision. | |
| Temperature | -55℃ to +155℃ | -55°C to +170°C | - | -55°C to +170°C — Wider operating temperature range. | |
| Technology | Metal Foil | - | Metal Alloy | Metal Alloy — Similar but different resistor technology. |
Application & sourcing insights
Questions & answers
Verified drop-in options for RLS12FTCR030 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.