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    BUL138

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    High voltage fast-switching NPN power transistor
    Learn More about BUL138

    Quantity $ per Unit Savings
    1 - 9$1.560%
    10 - 24$1.4010%
    25 - 99$1.3215%
    100 - 499$1.1328%
    500$0.9241%
    500 + Contact Sales
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    In stock
    $1.56
    Parameter NameParameter Value
    Operating RangeIndustrial
    Operating Temp Min Celsius-65.0
    Operating Temp Max Celsius150.0
    ECCN USEAR99
    ECCN EUNEC
    Packing TypeTube
    RoHs compliantEcopack2
    GradeIndustrial
    Package NameTO-220

    The BUL138 is manufactured using high voltage Multi Epitaxial Planar technology for high switching speeds and high voltage capability. It uses a Cellular Emitter structure with planar edge termination to enhance switching speeds.


    The BUL series is designed for use in lighting applications and low cost switch-mode power supplies.

    Key features
    • FULLY CHARACTERIZED AT 125oC
    • VERY HIGH SWITCHING SPEED
    • STMicroelectronics PREFERRED SALESTYPE
    • HIGH VOLTAGE CAPABILITY
    • NPN TRANSISTOR
    • MINIMUM LOT-TO-LOT SPREAD FOR RELIABLE OPERATION
    • LOW SPREAD OF DYNAMIC PARAMETERS