This part is a kind of semiconductor called BU326A.

Function of this product has HIGH VOLTAGE NPN SILICON POWER TRANSISTOR.

Manufacturers : ST Microelectronics

Image and pinout :

Some of the text within the PDF file :

® BU326A HIGH VOLTAGE NPN SILICON POWER TRANSISTOR s s s STMicroelectronics PREFERRED SALESTYPE NPN TRANSISTOR FAST SWITCHING SPEED APPLICATIONS: POWER SUPPLIES s LINEAR AND SWITCHING INDUSTRIAL EQUIPMENT s 1 2 TO-3 DESCRIPTION The BU326A is a silicon multiepitaxial mesa NPN transistor in Jedec TO-3 metal case particularly intended for switch-mode CTV supply system. INTERNAL SCHEMATIC DIAGRAM ABSOLUTE MAXIMUM RATINGS Symbol V CES V CEO V EBO IC I CM IB P tot T stg Tj Parameter Collector-Emitter Voltage (V BE = 0) Collector-Emitter Voltage (I B = 0) Emitter-Base Voltage (I C = 0) Collector Current Collector Peak Current Base Current Total Power Dissipation at T case ≤ 25 o C Storage Temperature Max. Operating Junction Temperature Value 900 400 10 6 8 3 75 -65 to 200 200 Unit V V [ ... ]

BU326A PDF Datasheet Download