str2550.pdf datasheet:

STR2550High voltage fast-switching PNP power transistorDatasheet - production dataFeatures Excellent hFE linearity up to 50 mA Miniature SOT-23 plastic package for surface mounting circuits3 Tape and reel packaging2 The NPN complementary type is STR15501SOT-23Applications LED drivingDescriptionFigure 1. Internal schematic diagram This device is a high voltage fast-switching PNP power transistor, manufactured using high voltage multi-epitaxial planar technology for high switching speeds.It employs a cellular emitter structure with planar edge termination to enhance switching speeds, while maintaining a wide RBSOA.Table 1. Device summaryOrder code Marking Package PackingSTR2550 2550 SOT-23 Tape and reelMay 2014 DocID022365 Rev 5 1/10This is information on a product in full production. www.st.com 10Contents STR2550