VS-22RIA120S90

Scrs Overview

The VS-22RIA120S90 is a medium power phase control thyristor (SCR) from the Vishay VS-22RIA series, designed for industrial and consumer applications. It features an average on-state current of 22 A at a case temperature of 85 °C and a maximum repetitive peak off-state voltage of 1200 V. The device offers high dI/dt and dV/dt capabilities with a typical turn-off time of 110 μs. Packaged in a TO-48 (TO-208AA) stud configuration, it provides improved glass passivation for stability at high temperatures.

Scrs Feature Summary

• High dI/dt and dV/dt capabilities for robust switching performance
• Improved glass passivation ensuring exceptional stability at high temperatures
• Low thermal resistance junction-to-case for efficient heat dissipation

Scrs Applications

• Medium power switching circuits
• Phase control applications

Scrs Procurement Notes

Verify the specific suffix S90 to confirm the critical dV/dt rating of 1000 V/μs, as standard versions differ. Confirm the metric thread availability if required, noting that the base part number indicates a standard 1/4"-28UNF-2A thread. Ensure mounting torque specifications are strictly followed during installation to maintain thermal interface integrity.

Scrs Selection Notes

Select this component when a 1200 V blocking capability is required alongside a 22 A continuous current rating. The S90 suffix is essential for applications demanding a high critical rate of rise of off-state voltage of 1000 V/μs. Consider the TO-48 package constraints and the need for appropriate heatsinking given the 0.86 K/W thermal resistance.

Scrs Part Context

This SCR belongs to the VS-22RIA series of medium power phase control thyristors. The series covers voltage ratings from 100 V to 1200 V. The VS-22RIA120S90 specifically denotes the 1200 V variant with enhanced dV/dt characteristics, housed in a standard stud mount package suitable for panel or chassis mounting in power electronics systems.

Scrs Replacement Considerations

Direct substitutes within the same series include VS-22RIA100S90 (1000 V) and VS-22RIA80S90 (800 V), provided the lower voltage ratings meet the circuit requirements. Other series members like VS-22RIA20 share the same current and package profile but differ in voltage blocking capability.