Bourns® Model PWR4412 Series Obsolescence
Bourns has announced the obsolescence of their PWR4412 series of metal element current sensing resistors. Customers should not worry because Riedon has an exact drop-in replacement, our MSR series. Here is the data sheet: https://riedon.com/media/pdf/MSR.pdf
We have these resistors stocked at Digikey. The MSR series offers a very stable, cost-effective method for measuring currents in a wide variety of applications including motor drives, power supplies, and uninterruptible power sources.
MSR alternate to the PWR4412
Below is a complete cross reference to the MSR:
| Bourns Part Number | Riedon Description | Riedon Part Number |
| PWR4412-2SBR0050F | MSR-1 0.005 OHM 1% | MSR1-0R005F1 |
| PWR4412-2SBR0050J | MSR-1 0.005 OHM 5% | MSR1-0R005J1 |
| PWR4412-2SBR0060F | MSR-1 0.006 OHM 1% | MSR1-0R006F1 |
| PWR4412-2SBR0100F | MSR-1 0.01 OHM 1% | MSR1-0R01F1 |
| PWR4412-2SBR0100J | MSR-1 0.01 OHM 5% | MSR1-0R01J1 |
| PWR4412-2SBR0150F | MSR-1 0.015 OHM 1% | MSR1-0R015F1 |
| PWR4412-2SBR0200F | MSR-1 0.02 OHM 1% | MSR1-0R02F1 |
| PWR4412-2SBR0200J | MSR-1 0.02 OHM 5% | MSR1-0R02J1 |
| PWR4412-2SBR0250F | MSR-1 0.025 OHM 1% | MSR1-0R025F1 |
| PWR4412-2SBR0250J | MSR-1 0.025 OHM 5% | MSR1-0R025J1 |
| PWR4412-2SBR0300F | MSR-1 0.03 OHM 1% | MSR1-0R03F1 |
| PWR4412-2SBR0300J | MSR-1 0.03 OHM 5% | MSR1-0R03J1 |
| PWR4412-2SBR0400F | MSR-1 0.04 OHM 1% | MSR1-0R04F1 |
| PWR4412-2SBR0400J | MSR-1 0.04 OHM 5% | MSR1-0R04J1 |
| PWR4412-2SBR0500F | MSR-1 0.05 OHM 1% | MSR1-0R05F1 |
| PWR4412-2SBR0500J | MSR-1 0.05 OHM 5% | MSR1-0R05J1 |
| PWR4412-2SBR1000F | MSR-1 0.1 OHM 1% | MSR1-0R1F1 |
| PWR4412-2SBR1000J | MSR-1 0.1 OHM 5% | MSR1-0R1J1 |
| PWR4412-2SCR0050F | MSR-3 0.005 OHM 1% | MSR3-0R005F1 |
| PWR4412-2SCR0100F | MSR-3 0.01 OHM 1% | MSR3-0R01F1 |
| PWR4412-2SCR0100J | MSR-3 0.01 OHM 5% | MSR3-0R01J1 |
| PWR4412-2SCR0150F | MSR-3 0.015 OHM 1% | MSR3-0R015F1 |
| PWR4412-2SCR0150J | MSR-3 0.015 OHM 5% | MSR3-0R015J1 |
| PWR4412-2SCR0200F | MSR-3 0.02 OHM 1% | MSR3-0R02F1 |
| PWR4412-2SCR0200J | MSR-3 0.02 OHM 5% | MSR3-0R02J1 |
| PWR4412-2SCR0250F | MSR-3 0.025 OHM 1% | MSR3-0R025F1 |
| PWR4412-2SCR0250J | MSR-3 0.025 OHM 5% | MSR3-0R025J1 |
| PWR4412-2SCR0300F | MSR-3 0.03 OHM 1% | MSR3-0R03F1 |
| PWR4412-2SCR0300J | MSR-3 0.03 OHM 5% | MSR3-0R03J1 |
| PWR4412-2SCR0400F | MSR-3 0.04 OHM 1% | MSR3-0R04F1 |
| PWR4412-2SCR0400J | MSR-3 0.04 OHM 5% | MSR3-0R04J1 |
| PWR4412-2SCR0490F | MSR-3 0.049 OHM 1% | MSR3-0R049F1 |
| PWR4412-2SCR0500F | MSR-3 0.05 OHM 1% | MSR3-0R05F1 |
| PWR4412-2SCR0500J | MSR-3 0.05 OHM 5% | MSR3-0R05J1 |
| PWR4412-2SCR0510F | MSR-3 0.051 OHM 1% | MSR3-0R051F1 |
| PWR4412-2SCR0800F | MSR-3 0.08 OHM 1% | MSR3-0R08F1 |
| PWR4412-2SCR0800J | MSR-3 0.08 OHM 5% | MSR3-0R08J1 |
| PWR4412-2SCR1000F | MSR-3 0.1 OHM 1% | MSR3-0R1F1 |
| PWR4412-2SCR1000J | MSR-3 0.1 OHM 5% | MSR3-0R1J1 |
| PWR4412-2SDR0050F | MSR-5 0.005 OHM 1% | MSR5-0R005F1 |
| PWR4412-2SDR0050J | MSR-5 0.005 OHM 5% | MSR5-0R005J1 |
| PWR4412-2SDR0100F | MSR-5 0.01 OHM 1% | MSR5-0R01F1 |
| PWR4412-2SDR0100J | MSR-5 0.01 OHM 5% | MSR5-0R01J1 |
| PWR4412-2SDR0150F | MSR-5 0.015 OHM 1% | MSR5-0R015F1 |
| PWR4412-2SDR0150J | MSR-5 0.015 OHM 5% | MSR5-0R015J1 |
| PWR4412-2SDR0200F | MSR-5 0.02 OHM 1% | MSR5-0R02F1 |
| PWR4412-2SDR0200J | MSR-5 0.02 OHM 5% | MSR5-0R02J1 |
| PWR4412-2SDR0250F | MSR-5 0.025 OHM 1% | MSR5-0R025F1 |
| PWR4412-2SDR0250J | MSR-5 0.025 OHM 5% | MSR5-0R025J1 |
| PWR4412-2SDR0300F | MSR-5 0.03 OHM 1% | MSR5-0R03F1 |
| PWR4412-2SDR0300J | MSR-5 0.03 OHM 5% | MSR5-0R03J1 |
| PWR4412-2SDR0500F | MSR-5 0.05 OHM 1% | MSR5-0R05F1 |
| PWR4412-2SDR0500J | MSR-5 0.05 OHM 5% | MSR5-0R05J1 |
| PWR4412-2SDR1000F | MSR-5 0.1 OHM 1% | MSR5-0R1F1 |
| PWR4412-2SDR1000J | MSR-5 0.1 OHM 5% | MSR5-0R1J1 |