VS-T90RIA120S90

SCRs - Modules Overview

The Vishay VS-T90RIA120S90 is a medium power phase control thyristor module in the D-55 (T-module) package. It features an electrically isolated base plate and supports repetitive peak reverse voltages up to 1200 V. The device provides a maximum average on-state current of 90 A at 70 °C case temperature, with a corresponding RMS current rating of 141 A. Non-repetitive surge current capability reaches 1870 A at 60 Hz. The S90 suffix indicates a high critical rate of rise of off-state voltage (dV/dt) qualification of 3500 V/μs. Maximum junction operating temperature extends to +125 °C.

SCRs - Modules Feature Summary

• Electrically isolated base plate for simplified mechanical designs and rapid assembly
• High surge capability with large creepage distances
• Qualified for industrial level applications
• UL E78996 approved

SCRs - Modules Applications

• Battery chargers
• Welders and plating equipment
• Regulated power supplies
• Temperature and speed control circuits

SCRs - Modules Procurement Notes

Verify the specific ordering code against the manufacturer's official documentation to ensure correct dV/dt ratings and thermal characteristics. Confirm that the D-55 mounting interface matches the heatsink design requirements. Check for any recent product change notifications regarding material categorization or compliance standards before finalizing procurement specifications.

SCRs - Modules Selection Notes

Select this component based on the required average on-state current and blocking voltage levels. Ensure the gate drive circuit can supply the necessary trigger current and voltage across the specified temperature range. Verify that the thermal resistance from junction to case allows for adequate heat dissipation within the maximum junction temperature limits under expected load conditions.

SCRs - Modules Part Context

This part belongs to the VS-T..RIA series of medium power phase control thyristors manufactured by Vishay Semiconductors. The series includes variants with different current ratings such as 50 A and 70 A, all sharing the same D-55 T-module package style. These modules are designed for general purpose industrial applications requiring robust performance and electrical isolation.

SCRs - Modules Replacement Considerations

Consult the official datasheet for cross-reference information. Verify compatibility of the D-55 package dimensions and terminal layout. Ensure replacement devices meet or exceed the original electrical ratings including VRRM, IT(AV), and dV/dt capabilities.