VS-ST780C04L1

Scrs Overview

The VS-ST780C04L1 is a standard recovery silicon Controlled Rectifier (SCR) manufactured by Vishay General Semiconductor - Diodes Division. It features a 400 V repetitive peak off-state voltage and supports an average on-state current of 1350 A with a maximum RMS current of 2700 A. The device utilizes a TO-200AC, B-PUK hockey puck package for clamp mounting. Key electrical characteristics include a maximum gate trigger voltage of 3 V, a maximum gate trigger current of 200 mA, and a maximum on-state voltage of 1.31 V. Non-repetitive surge currents reach 20550 A at 50 Hz and 21500 A at 60 Hz. The junction operating temperature range spans from -40°C to 125°C.

Scrs Feature Summary

• High-power handling capability with 2700 A RMS current rating for heavy-duty industrial applications
• Standard recovery time characteristics suitable for general phase control and rectification
• Robust mechanical construction in a hockey puck form factor designed for secure clamp mounting

Scrs Applications

• Industrial motor drives and variable frequency drives
• High-power AC power control systems
• Resistive load heating controllers

Scrs Procurement Notes

This component has been officially declared obsolete by the manufacturer as of December 5, 2024. Verification of final stock availability through authorized distributors is required before design finalization. Engineers must confirm end-of-life status and transition timelines immediately to avoid supply chain disruptions. Sourcing should focus on remaining inventory or approved alternative components that meet identical electrical and mechanical specifications.

Scrs Selection Notes

Selection requires matching the 400 V blocking voltage and high current demands of the target circuit. The TO-200AC package necessitates specific heatsinking and clamp mounting hardware compatible with hockey puck devices. Designers must account for the standard recovery speed when evaluating switching losses and electromagnetic interference in phase control applications. Thermal management strategies must support the specified junction temperature limits under continuous operation.

Scrs Part Context

Part of the ST780 series, this SCR represents Vishay's offering in the high-current thyristor segment. The series is engineered for robust performance in demanding power electronics environments. The hockey puck packaging distinguishes it from leaded alternatives, providing superior thermal conductivity and mechanical stability for high-amperage installations.

Scrs Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Due to the specific mechanical dimensions and electrical ratings, direct pin-to-pin replacements may not exist. Alternative solutions require careful evaluation of voltage, current, and mounting compatibility.