
Milliohm
A 2W power upgrade in the same 1206 package with matching resistance, tolerance, and TCR.
PA1206FRF470R001Z is a 1W, 1mΩ, 1% AEC-Q200 qualified current sense resistor in a 1206 package. Finding substitutes involves matching these key parameters while considering power rating and TCR for enhanced reliability.
Candidates are upgrades in power rating, which is generally safe.
All recommended candidates use the same 1206 package.
Thermal performance must be verified in the specific application due to the power rating change.
Yes, several parts like Milliohm HoSRX1206-2W-1mR-1% offer a pin-compatible upgrade path with a higher power rating.
Upgrade to a higher power resistor like Milliohm's HoSRX series (2W or 3W) for increased design margin while maintaining all other critical specs.
The main risk is thermal management. Higher power parts may run hotter under the same load, requiring verification of the PCB layout's heat dissipation capabilities.

Milliohm
A 2W power upgrade in the same 1206 package with matching resistance, tolerance, and TCR.
| Feature / factor | PA1206FRF470R001Z | HoSRX1206-2W-1mR-1% | HoSRX1206-3W-1mR-1% | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 1206 (3216 Metric) | 1206 | 1206 | 1206 — Form and fit match.; HoSRX1206-3W-1mR-1%: Form and fit match. | |
| Power | 1.0W | 2.0W | 3.0W | 2.0W / 3.0W — Higher power rating provides increased design margin.; HoSRX1206-3W-1mR-1%: Significantly higher power rating provides maximum design margin. | |
| Resistance | 0.001 Ω | 0.001 Ω | 0.001 Ω | 0.001 Ω — Identical resistance value.; HoSRX1206-3W-1mR-1%: Identical resistance value. | |
| Tolerance | ±1.0% | ±1.0% | ±1.0% | ±1.0% — Identical tolerance.; HoSRX1206-3W-1mR-1%: Identical tolerance. | |
| Tcr | ±50 ppm/°C | ±50ppm/°C | ±50ppm/°C | ±50ppm/°C — Identical temperature coefficient for stable performance.; HoSRX1206-3W-1mR-1%: Identical temperature coefficient. |
Milliohm's HoSRX1206-2W-1mR-1% is an excellent alternative, offering a 2W power upgrade in the same 1206 package with identical resistance, tolerance, and TCR.