
Milliohm
Same package and electricals, but has a weaker Temperature Coefficient (TCR).
TAI-TECH's RLS12FTCR020 is a 1W, 20mΩ, 1206 current sense resistor. Strong pin-compatible alternatives exist, but engineers must review TCR and technology differences in other candidates.
Several candidates match key electricals. Risk increases with TCR or technology mismatches.
Some functional alternatives are in a larger 2512 package, requiring a board redesign.
Alternatives exist from major manufacturers like Yageo and Milliohm, improving availability.
Direct replacement for RLS12FTCR020 should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Start with Datasheet verified or Strong match candidates for RLS12FTCR020, then review parametric alternatives for package and electrical fit.
The main risks when substituting are differences in Temperature Coefficient (TCR), resistor technology, and physical package size.

Milliohm
Same package and electricals, but has a weaker Temperature Coefficient (TCR).
| Feature / factor | RLS12FTCR020 | HoJLR1206-1W-20mR-1%-75ppm | HoLR1206-1W-20mR-1%-75ppm | PA1206FRF470R02L | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 1206 | 1206 | 1206 | 1206 (3216 Metric) | 1206 / 1206 (3216 Metric) — Form factor matches.; HoLR1206-1W-20mR-1%-75ppm: Form factor matches.; PA1206FRF470R02L: Package size matches.; PE1206FKM470R02Z: Form factor matches. |
| Power | 1.0W | 1.0W | 1.0W | 1.0W | 1.0W — Power rating matches.; HoLR1206-1W-20mR-1%-75ppm: Power rating matches.; PA1206FRF470R02L: Power rating matches. |
| Resistance | 0.02Ω | 0.02Ω | 0.02Ω | 0.02Ω | 0.02Ω — Resistance value matches.; HoLR1206-1W-20mR-1%-75ppm: Resistance value matches.; PA1206FRF470R02L: Resistance value matches. |
| Tcr | ±50 ppm/℃ | ±75ppm/℃ | ±75ppm/℃ | ±50 ppm/°C | ±75ppm/℃ / ±50 ppm/°C / ±75 ppm/°C — Candidate has a higher temperature coefficient, indicating lower precision.; HoLR1206-1W-20mR-1%-75ppm: Candidate has a higher temperature coefficient, indicating lower precision.; PA1206FRF470R02L: Temperature coefficient matches.; PE1206FKM470R02Z: Candidate has a weaker temperature coefficient. |
| Technology | Metal Foil | - | - | - | Metal Film — Different resistor technology may affect stability and noise. |
Verified drop-in options for RLS12FTCR020 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.