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Power Transistors 2SD1277, 2SD1277A Silicon NPN triple diffusion planar type Darlington For midium speed power switching Unit mm 10.0 0.2 4.2 0.2 Complementary to 2SB951 and 2SB951A 5.5 0.2 2.7 0.2 Features High foward current transfer ratio hFE 3.1 0.1 High-speed switching Full-pack package which can be installed to the heat sink with one screw 1.3 0.2 1.4 0.1 Absolute Maximum Ratings (TC=25 C) +0.2 0.5 0.1 0.8 0.1 Parameter Symbol Ratings Unit Collector to 2SD1277 60 VCBO V 2.54 0.25 base voltage 2SD1277A 80 5.08 0.5 Collector to 2SD1277 60 1 2 3 VCEO V 1 Base emitter voltage 2SD1277A 80 2 Collector 3 Emitter Emitter to base voltage VEBO 7 V TO 220 Full Pack Package(a) Peak collector current ICP 12 A Internal Connection Collector current IC 8 A C Collector power TC=25 C 45 PC W dissipation Ta=25 C 2 B Ju... See More ⇒

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