VS-ST173S12PFK0

Scrs Overview

The VS-ST173S12PFK0 is a standard recovery silicon controlled rectifier (SCR) manufactured by Vishay General Semiconductor - Diodes Division. It features a maximum repetitive peak off-state voltage of 1.2 kV and an on-state RMS current rating of 275 A. The device utilizes a TO-209AB (TO-93-4) chassis mount package with stud mounting for efficient thermal management. Key electrical parameters include a maximum gate trigger voltage of 3 V, a holding current of 600 mA, and a non-repetitive surge current capacity of 50 A. It operates within a junction temperature range of -65°C to 175°C.

Scrs Feature Summary

• High power handling capability with 275 A RMS on-state current
• Robust insulation and mounting via TO-209AB chassis package
• Standard recovery characteristics suitable for general industrial applications
• Wide operating temperature range up to 175°C

Scrs Applications

• Industrial motor drives and control systems
• High-power DC-to-AC inverters
• Resistive load switching applications
• Battery charging circuits requiring high current

Scrs Procurement Notes

Verify the specific suffix 'FK0' against official Vishay documentation to confirm exact pinout configuration and mechanical dimensions. Ensure that the TO-209AB package compatibility matches the intended heatsink or chassis interface. Confirm that the 1.2 kV blocking voltage and 275 A current ratings align with the system's peak operational demands and safety margins before finalizing procurement.

Scrs Selection Notes

Select this component when high current switching at medium voltages is required in a chassis-mount form factor. Consider the standard recovery time for applications where fast switching is not critical. Evaluate the thermal resistance of the TO-209AB package relative to the expected ambient conditions. Compare against alternative SCR families if lower gate drive currents or different package styles are preferred for the specific design constraints.

Scrs Part Context

This part belongs to Vishay's discrete semiconductor diode and thyristor portfolio, specifically focusing on high-power industrial components. The VS-ST series typically denotes silicon controlled rectifiers designed for robust performance in demanding environments. Vishay General Semiconductor provides these devices for applications requiring reliable power control and conversion in heavy-duty industrial settings.

Scrs Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source data. Engineers should consult official Vishay cross-reference tools or distributor databases for compatible alternatives with matching voltage, current, and package specifications.