VS-VSKN91/08

SCRs - Modules Overview

The VS-VSKN91/08 is a thyristor/diode module from the VS-VSKN91 series by Vishay Semiconductors. It features an SCR/diode common anode circuit configuration within an AAP Gen 7 (TO-240AA) package. The device has a maximum repetitive peak reverse voltage of 800 V and supports a maximum average on-state current of 95 A at 85 °C case temperature. Continuous RMS current as an AC switch reaches 210 A, with non-repetitive surge currents of 2000 A at 50 Hz and 2094 A at 60 Hz. Operating junction temperatures range from -40 °C to +125 °C.

SCRs - Modules Feature Summary

• Utilizes exposed direct bonded copper substrate for excellent thermal performance
• Industrial standard ADD-A-PAK package designed for easy heatsink mounting
• High surge capability with robust fusing characteristics
• UL approved file E78996

SCRs - Modules Applications

• High voltage regulated power supplies
• Lighting circuits
• Temperature control circuits
• Motor speed control circuits
• UPS systems and battery chargers

SCRs - Modules Procurement Notes

Verify the specific voltage code suffix matches the required blocking voltage rating before procurement. Confirm that the ordering suffix corresponds to the desired circuit configuration, as variations exist within the series. Ensure compliance with RoHS3 specifications and check for any recent product change notifications regarding manufacturing locations or material composition updates prior to finalizing orders.

SCRs - Modules Selection Notes

Select this component based on the 800 V blocking requirement and 95 A continuous current capacity. Evaluate thermal management needs using the specified junction-to-case thermal resistance of 0.22 °C/W per leg. Consider the gate triggering parameters, specifically the maximum gate trigger voltage and current requirements, to ensure compatibility with the drive circuitry under varying temperature conditions.

SCRs - Modules Part Context

This module belongs to the VS-VSKT91, VS-VSKH91, VS-VSKL91, and VS-VSKN91 series, which share identical electrical ratings and mechanical dimensions but differ in internal circuit configurations. The VS-VSKN91 variant specifically provides an SCR/diode common anode topology, distinguishing it from doubler or single SCR designs within the same physical footprint and thermal envelope.

SCRs - Modules Replacement Considerations

Direct substitutes include other parts within the VS-VSKN91 series with different voltage codes, such as VS-VSKN91/10 for 1000 V applications. Cross-series replacements like VS-VSKT91/08 are possible if the circuit topology allows for a simple SCR instead of the combined SCR/diode structure.