3STF1640 STMicroelectronics

3STF1640 Low voltage high performance NPN power transistor Datasheet - preliminary data Features Very low collector-emitter saturation voltage High current gain characteristic 4 Fast switching speed 3 2 Applications 1 Power management SOT-89 DC-DC converters Automotive Description Figure 1. Internal schematic diagram This device is a NPN transistor manufactured using new low voltage planar technology with double metal process. The result is a transistor which boasts exceptionally high gain performance coupled with very low saturation voltage. Table 1. Device summary Order codes Marking Package Packaging 3STF1640 1640 SOT-89 Tape and reel April 2013 DocID023648 Rev 3 1/12 This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to www.st.com 12 change without notice. Contents 3STF1640 Contents 1 Electrical ratings 3 2 Electrical characteristics . 4 2.1 Test circuits . 5 3 Package mechanical data . 6 4 Packaging mechanical data . 9 5 Revision history . 11 2/12 DocID023648 Rev 3