STN951

STN951 Low voltage fast-switching PNP power transistor Features ■ Very low collector-emitter saturation voltage ■ High current gain characteristic ■ Fast switching speed ■ Surface mounting device in medium power SOT-223 package Applications ■ Emergency lighting ■ Voltage regulators ■ Relay drivers ■ High efficiency low voltage switching applications Description The device is manufactured in PNP planar technology by using a “Base Island” layout. The resulting transistor shows exceptional high gain performances coupled with very low saturation voltage. 4 3 2 1 SOT-223 Figure 1. Internal schematic diagram Table 1. Device summary Order codes Marking STN951 N951 October 2008 Package SOT-223 Rev 3 Packaging Tape and reel 1/8 www.st.com 8 Contents STN951 1 Electrical ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2/8 STN951 1 Electrical ratings Table 2. Absolute maximum rating Symbol Parameter VCBO VCEO VEBO IC ICM IB IBM Ptot Tstg Tj Collector-base voltage (IE = 0) Collector-emitter voltage (IB = 0) Emitter-base voltage (IC = 0) Collector current Collector peak current (tP < 5 ms) Base current Bas...