ST stn851 free download

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STN851 Low voltage fast-switching NPN power transistor Features Very low collector to emitter saturation voltage High current gain characteristic 4 Fast-switching speed 3 2 Applications 1 Emergency lighting SOT-223 Voltage regulators Relay drivers High efficiency low voltage switching applications Figure 1. Internal schematic diagram Description The device is manufactured in Planar Technology with "Base Island" layout. The resulting transistor shows exceptional high gain performance coupled with very low saturation voltage. Table 1. Device summary Order code Marking Package Packaging STN851 N851 SOT-223 Tape and reel March 2009 Rev 7 1/10 www.st.com 10 Electrical ratings STN851 1 Electrical ratings Table 2. Absolute maximum ratings Symbol Parameter Value Unit VCBO Collector-base voltage (IE = 0) 150 V VCEO Collector-emitter voltage (IB = 0) 60 V VEBO Emitter-base voltage (IC = 0) 7 V IC Collector current 5 A ICM Collector peak current (tP < 5 ms) 10 A IB Base current 1 A IBM Base peak current (tP < 5 ms) 2 A Ptot Total dissipation at Tamb = 25