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| PartNumber | ND431225 | ND431421 | ND431621 |
| Description | SCR MOD ISO DUAL 1200V 250A | SCR MOD ISO DUAL 1400V 210A | SCR MOD ISO DUAL 1600V 210A |
| Manufacturer | Powerex Inc. | Powerex Inc. | Powerex Inc. |
| Product Category | Module | Thyristors - SCRs - Modules | Thyristors - SCRs - Modules |
| Series | - | - | - |
| Packaging | Bulk | Bulk | Bulk |
| Package Case | POW-R-BLOK Module | POW-R-BLOK Module | POW-R-BLOK Module |
| Mounting Type | Chassis Mount | Chassis Mount | Chassis Mount |
| Structure | Series Connection - All SCRs | Series Connection - All SCRs | Series Connection - All SCRs |
| Current Hold Ih Max | - | - | - |
| Voltage Off State | 1200V | 1400V | 1600V |
| Current Gate Trigger Igt Max | 150mA | 150mA | 150mA |
| Current On State It AV Max | 250A | 210A | 210A |
| Current On State It RMS Max | 393A | 330A | 330A |
| Current Non Rep# Surge 50 60Hz Itsm | 8800A @ 60Hz | 11190A @ 60Hz | 11190A @ 60Hz |
| Number of SCRs Diodes | 2 SCRs | 2 SCRs | 2 SCRs |