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2STR1230Low voltage fast-switching NPN power transistorFeatures Very low collector-emitter saturation voltage3 High current gain characteristic Fast switching speed Miniature SOT-23 plastic package for surface 2mounting circuits1ApplicationsSOT-23 LED Motherboard & hard disk drive Mobile equipmentFigure 1. Internal schematic diagram DC-DC converter Voltage regulationDescriptionThe device is a NPN transistor manufactured using new PB-HCD (power bipolar high current density) technology. The resulting transistor shows exceptional high gain performances coupled with very low saturation voltage.The complementary PNP is the 2STR2230.Table 1. Device summaryOrder code (1) Marking Package Packing2STR1230 130 SOT-23 Tape and reel2STR1230G 130G SOT-23 Tape and reel1. The letter "G" in the order code suff