DS402ST is a double-sided cooled, high surge capability rectifier diode. It has a maximum reverse working voltage of 1400V, a maximum average forward current of 505A and a maximum surge forward current of 5600A.
This document is a technical datasheet for the Dynex Semiconductor DS402ST series of Rectifier Diodes. The devices are designed for high surge capability and feature double-side cooling to handle heavy currents up to 793 A RMS under specific conditions.
The diodes are intended for use in DC motor control, power supplies, welding equipment, and battery chargers. Key parameters include repetitive peak reverse voltage ratings ranging from 900V to 1400V and maximum mean forward current capabilities depending on the cooling configuration (double-sided or single-sided).
| Max. Mean Forward Current (Double Side Cooled) | 505 A |
|---|---|
| Max. Continuous Forward Current (Double Side Cooled) | 640 A |
| Surge Forward Current (non-repetitive) | 5.6 kA |
| Max. Junction Temperature | 185 °C |
| Thermal Resistance (Junction to Case, Double Side) | 0.08 °C/W |
The document lists DC Motor Control, Power Supplies, Welding, and Battery Chargers as primary applications.
Yes, a key feature of this series is Double Side Cooling to manage high current loads.