VS-22RIA120

Scrs Overview

The VS-22RIA120 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 supports maximum repetitive peak off-state voltages up to 1200 V. The device utilizes a TO-48 (TO-208AA) stud package with a standard 1/4"-28UNF-2A thread. Key electrical characteristics include a maximum on-state voltage of 1.70 V, a gate trigger current of 60 mA at 25 °C, and a typical turn-off time of 110 μs. It operates within a junction temperature range of -65 °C to +125 °C.

Scrs Feature Summary

• Improved glass passivation for high reliability and exceptional stability at elevated temperatures
• High dI/dt and dV/dt capabilities suitable for demanding switching environments
• Low thermal resistance junction-to-case configuration for efficient heat dissipation

Scrs Applications

• Medium power switching circuits
• Phase control applications
• Industrial level equipment requiring robust SCR performance

Scrs Procurement Notes

Verify the specific voltage code suffix against the ordering information table to ensure the correct blocking voltage rating. Confirm whether metric threads or standard imperial threads are required for mounting compatibility. Check datasheet notes regarding critical dV/dt ratings if operating near maximum voltage limits. Ensure thermal management design accounts for the specified junction-to-case thermal resistance values under expected conduction angles.

Scrs Selection Notes

Select this component based on the required average on-state current and maximum repetitive peak voltage for the target circuit. Evaluate the thermal resistance requirements against the available heat sink capacity to maintain junction temperatures within the specified operational range. Consider the gate trigger characteristics and recommended load lines for reliable triggering. Verify that the surge current ratings meet the prospective fault currents in the application.

Scrs Part Context

The VS-22RIA120 belongs to the VS-22RIA series of medium power phase control thyristors manufactured by Vishay Semiconductors. This series offers various voltage codes ranging from 100 V to 1200 V, all sharing the same 22 A current rating and TO-48 package style. The series is engineered for both industrial and consumer level applications, providing a balance of high reliability and standard mechanical dimensions.

Scrs Replacement Considerations

Direct substitutes within the VS-22RIA series include variants with different voltage codes such as VS-22RIA100 (1000 V) or VS-22RIA10 (100 V), provided the voltage rating meets the circuit requirements. Other Vishay SCR series may serve as alternatives if mechanical and electrical parameters align, but specific cross-referencing with official Vishay documentation is necessary.

Scrs FAQ

What is the maximum non-repetitive peak voltage rating for the VS-22RIA120?

The maximum non-repetitive peak voltage (VRSM) for the VS-22RIA120 is 1300 V.

How does the critical rate of rise of off-state voltage (dV/dt) vary with operating conditions?

At maximum junction temperature linear to 100% rated voltage, the dV/dt is 100 V/μs. When linear to 67% of the rated voltage, it increases to 300 V/μs.

What is the typical turn-off time for this device?

The typical turn-off time (tq) is 110 μs, measured at maximum junction temperature with specific test conditions including ITM = IT(AV) and VR = 100 V.