W0438SD18 Westcode - Power Module
W0438SD18 Description
The W0438SD18 from Westcode is a thyristor (SCR) with a 1800 V / 438 A rating. Typical applications include soft starters, AC power controllers, controlled rectifiers, DC motor drives and heating control. Many of these parts are still in service in machines built years ago, and a direct replacement is often the fastest way to get one running again.
Looking for a replacement W0438SD18? USComponent can quote new and hard-to-find stock and ships worldwide. Request a quote for pricing and lead time, and double-check the datasheet to make sure it fits your application.
Target Applications
Westcode W0438SD18 is used for variable speed motor drives, high power inverter and traction.
Key Specifications
| Manufacturer | Westcode |
| Category | Power Module |
| Rated voltage | 1800 V |
| Rated current | 438 A |
Related Part Numbers
| W0438SD20 2000V, 438A | W0438SD16 1600V, 438A | W0503SD18 1800V, 503A | W0438SD22 2200V, 438A |
| W0438SD24 2400V, 438A | W0503SD16 1600V, 503A | W0503SD24 2400V, 503A | W0503SD22 2200V, 503A |
| W0438SC24 2400V, 438A | W0438SC22 2200V, 438A | W0438SC20 2000V, 438A | W0438SC18 1800V, 438A |
| W0438SC16 1600V, 438A | W0438RD24 2400V, 438A | W0438RD22 2200V, 438A | W0438RD20 2000V, 438A |

