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    Vishay Intertechnology FRED Pt 500 A Ultrafast Soft Recovery Diode Modules in the New TO-244 Gen III Package Deliver High Reliability

    Featuring a Common Cathode Configuration, Devices Can Withstand IOL Cycles Up to 5x That of the Previous TO-244 Generation for Improved Life Expectancy While
    Reducing Losses

    Vishay Intertechnology, Inc. has introduced two new FRED Pt 500 A Ultrafast soft recovery diode modules in the new TO-244 Gen III package. Offering higher reliability than previous-generation solutions, the Vishay Semiconductors VS-VSUD505CW60 and VS-VSUD510CW60 are designed to reduce losses and EMI / RFI in high-frequency power conditioning systems.

    The rugged TO-244 package of the diode modules released today withstands 46 000 IOL cycles at given conditions, offering an improved life expectancy over previous-generation devices. In addition, the industry-standard package is footprint-compatible with competing solutions in the TO-244 to provide a drop-in replacement for existing designs.

    The VS-VSUD505CW60 and VS-VSUD510CW60 are ideally suited for high-frequency welding; high current converters and ballast water management systems (BWMS) in railway equipment, cranes, and ships; UPS; and other applications where switching losses comprise a significant portion of the total losses. In these applications, the softness of their recovery eliminates the need for a snubber, reducing component counts and lowering costs.

    Offered in a common cathode configuration, the diode modules provide low forward voltage drop down to 0.82 V, thermal resistance — junction to case — of 0.16 °C/W, and an operating temperature range up to +175 °C.

    Device Specification Table:

    Part number VS-VSUD505CW60 VS-VSUD510CW60
    VR (V)




    Qrr typical (nC) 460 1770
    trr (ns) 178 270
    VFM @ 250 A, +175 °C (V) 0.95 0.82
    RthJC per diode (°C/W)




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