
TAI-TECH
Strong alternative with higher power rating (3W) and better TCR (±50ppm/°C).
PA2512FKE7W0R001E is a 2W, 1mΩ, 1% AEC-Q200 current sense resistor. While several alternatives exist in the same 2512 package, careful review of the Temperature Coefficient of Resistance (TCR) is critical. One strong alternative offers improved power and TCR.
TCR degradation in many alternatives requires validation.
All candidates share the same 2512 package.
Multiple vendors offer similar parts, but qualification may vary.
Direct replacement for PA2512FKE7W0R001E should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
RLP25FEGR001 offers an upgrade in power and TCR, making it the top choice.
TCR mismatch is the primary risk with most alternatives, potentially impacting circuit precision.

TAI-TECH
Strong alternative with higher power rating (3W) and better TCR (±50ppm/°C).
| Feature / factor | PA2512FKE7W0R001E | RLP25FEGR001 | ECSR2512FR001K9 | WSL25121L000FEA18 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 2512 | 2512 | 2512 | 2512 | 2512 — Form factor matches.; ECSR2512FR001K9: Form factor matches.; WSL25121L000FEA18: Form factor matches.; HoLLR2512-3W-1mR-1%: Form factor matches. |
| Resistance | 1.0 mΩ | 1.0 mΩ | - | 1.0 mΩ | 1.0 mΩ — Resistance matches.; WSL25121L000FEA18: Resistance matches. |
| Power | 2.0 W | 3.0 W | 3.0 W | 2.0 W | 3.0 W / 2.0 W — Higher power rating provides more margin.; ECSR2512FR001K9: Higher power rating.; WSL25121L000FEA18: Power rating matches.; HoLLR2512-3W-1mR-1%: Higher power rating. |
| Tcr | ±75 ppm/°C | ±50 ppm/℃ | ±100 ppm/℃ | ±275 ppm/°C | ±50 ppm/℃ / ±100 ppm/℃ / ±275 ppm/°C / ≤100ppm/°C — Better TCR improves thermal stability.; ECSR2512FR001K9: Weaker TCR.; WSL25121L000FEA18: Significantly weaker TCR.; HoLLR2512-3W-1mR-1%: Weaker TCR. |
| Application | AEC-Q200 | AEC-Q200 | AEC-Q200 | AEC-Q200 | AEC-Q200 / Unknown — Automotive qualification matches.; ECSR2512FR001K9: Automotive qualification matches.; WSL25121L000FEA18: Automotive qualification matches.; HoLLR2512-3W-1mR-1%: AEC-Q200 status not confirmed. |
Verified drop-in options for PA2512FKE7W0R001E 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.