This part is a kind of semiconductor called BD536.

Function of this product has Complementary power transistors.

Manufacturers : STMicroelectronics

Image and pinout :

Some of the text within the PDF file :

BD533 BD535 BD537 BD534 BD536 Complementary power transistors Features . ■ BD533, BD535, and BD537 are NPN transistors )Description t(sThe devices are manufactured in Planar ctechnology with “Base Island” layout. The duresulting transistor shows exceptional high gain roperformance coupled with very low saturation Obsolete Product(s) - Obsolete Pvoltage. The PNP types are BD534 and BD536. 3 2 1 TO-220 Figure 1. Internal schematic diagrams Table 1. Device summary Order code Marking Package Packaging BD533 BD534 BD535 BD536 BD537 BD533 BD534 BD535 BD536 BD537 TO-220 Tube July 2007 Rev 4 1/11 www.st.com 11 Absolute maximum ratings 1 Absolute maximum ratings BD533 BD534 BD535 BD536 BD537 Table 2. Symbol Absolute maximum ratings Parameter Value Unit NPN BD533 BD53 [ ... ]

BD536 PDF Datasheet Download