VS-ST1280C04K1

Scrs Overview

The VS-ST1280C04K1 is a standard recovery Silicon Controlled Rectifier (SCR) manufactured by Vishay General Semiconductor - Diodes Division. It features a clamp mount configuration in an A-24 (K-PUK) package with two terminals. Key electrical ratings include a maximum repetitive peak off-state voltage of 400 V, an RMS on-state current of 4150 A, and an average on-state current of 2310 A. The device supports a non-repetitive peak surge current of up to 37400 A at 60 Hz. Gate triggering parameters specify a maximum DC gate trigger current of 200 mA and a maximum DC gate trigger voltage of 3 V. The component operates within a temperature range of -40 °C to 125 °C.

Scrs Feature Summary

• High-capacity power handling capability designed for heavy-duty industrial applications requiring robust current switching.

Scrs Applications

• Industrial motor drives
• Power supply systems
• Welding equipment

Scrs Procurement Notes

Verify the exact part number suffix against official Vishay documentation, as variations exist within the ST1280 series regarding voltage ratings. Confirm that the specific K1 suffix corresponds to the 400V rating rather than other variants like K0 or K6 which may have different blocking voltages. Ensure compatibility with existing clamp mounting hardware and thermal management solutions before procurement.

Scrs Selection Notes

Select this component based on its specific 400V blocking voltage and high RMS current capacity. Compare the gate trigger requirements with available drive circuitry to ensure the 200 mA limit is met. Evaluate the thermal resistance and mounting constraints associated with the A-24 package to ensure reliable operation under expected load conditions.

Scrs Part Context

This SCR belongs to the ST1280 series from Vishay, characterized by large-diameter silicon wafers suitable for high-current applications. The series utilizes advanced thyristor technology to achieve low forward voltage drops and high surge capabilities. These devices are engineered for durability in demanding environments where high reliability and efficient power conversion are critical.

Scrs Replacement Considerations

VS-ST1280C04K0 is listed as a parameter-equivalent alternative. Verify if the voltage and current specifications match the original design requirements before substitution.