2SD1985 Datasheet

Silicon NPN Triple Diffusion Planar Type ( For Power Amplification )


Features, Applications

Parameter Collector to base voltage Collector 2SD1985A 2SD1985 Symbol VCBO VCEO VEBO ICP PC Tj Tstg

emitter voltage 2SD1985A Emitter to base voltage Peak collector current Collector current Collector power TC=25�C dissipation Ta=25�C Junction temperature Storage temperature

High forward current transfer ratio hFE which has satisfactory linearity Low collector to emitter saturation voltage VCE(sat) Full-pack package which can be installed to the heat sink with one screw

Parameter Collector cutoff current Collector cutoff current Emitter cutoff current Collector to emitter voltage 2SD1985 2SD1985A

Symbol ICES ICEO IEBO VCEO hFE1* hFE2 VBE VCE(sat) fT ton tstg tf Conditions VCE = 0 VCE = 0 VCE = 0 VCE = 0 VEB = 0 VCE = 1A VCE = 3A VCE = 0.375A VCE � 0.1A, VCC 50V V MHz �s 250 min typ max Unit mA V

Forward current transfer ratio Base to emitter voltage Collector to emitter saturation voltage Transition frequency Turn-on time Storage time Fall time

Note: Ordering can be made by the common rank (PQ rank hFE 250) in the rank classification.
5 (1) TC=Ta (2) With 2mm Al heat sink (3) Without heat sink 30 TC=25�C

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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