KR421K15 Powerex - Darlington Independent Power Module
KR421K15 Description
The KR421K15 from Powerex is a Darlington transistor module with a 1000 V / 150 A rating. It was a workhorse in drives and power supplies before IGBTs took over, and it is still needed to repair that equipment.
We help engineers and repair technicians find parts like the KR421K15, including obsolete ones. Send a quick RFQ for current pricing and delivery. Before ordering, please confirm ratings and pin-out with the official datasheet.
Target Applications
Powerex KR421K15 is used for high-power traction inverters and choppers, medium-voltage motor drives, static VAR compensators and other high-power converters.
Key Specifications
| Manufacturer | Powerex |
| Category | Darlington Independent Power Module |
| Rated voltage | 1000 V |
| Rated current | 150 A |
Related Part Numbers
| KR421K10 1000V, 100A | KR221K03 30 A, 1000 V, NPN, Si, POWER TRANSISTOR | KR221K05 1000(V) / 50(A) | KR921K05 1000V, 50A |
| KR72450110 450V, 10A | KR921205 970V, 70A | KR324515 470V, 170A | KR224575 600V, 75A |
| KR224520 600V, 50A | KR224515 600V, 150A | KR224510 600(V) / 100(A) | KR224505 600(V) / 50(A) |
| KR224503 600(V) / 30(A) |

