2SC3977 Datasheet



Features, Applications

High-speed switching High collector to base voltage VCBO Wide area of safe operation (ASO) Satisfactory linearity of foward current transfer ratio hFE Full-pack package which can be installed to the heat sink with one screw (TC=25�C)

emitter voltage 2SC3977A Collector to emitter voltage Emitter to base voltage Peak collector current Collector current Base current Collector power TC=25�C dissipation Ta=25�C Junction temperature Storage temperature

Parameter Collector cutoff current Emitter cutoff current Collector to emitter voltage Forward current transfer ratio Collector to emitter saturation voltage Base to emitter saturation voltage Transition frequency Turn-on time Storage time Fall time 2SC3977 2SC3977A

Symbol ICBO IEBO VCEO hFE1 hFE2 VCE(sat) VBE(sat) fT ton tstg tf Conditions VCB = 0 VCB = 0 VEB = 0 VCE = 0.1A VCE = 0.04A VCE � 0.08A, VCC 250V V MHz �s min typ max 50 Unit �A V

1.2 (1) TC=Ta (2) With 2mm Al heat sink (3) With 2mm Al heat sink (4) Without heat sink 20mA 0.2

10000 Note: Rth was measured at Ta=25�C and under natural convection. 0.2A (2W) and without heat sink 1.0A (10W) and with 2mm Al heat sink



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