138 darlington 2sd1785 i c v ce characteristics (typical) h fe i c characteristics (typical) q j-a e t characteristics i c e v be temperature characteristics (typical) pc e ta derating safe operating area (single pulse) f t e i e characteristics (typical) 0.4 2 1 base-emittor voltage v be (v) collector current i c (a) (v ce =2v) 0.5 1 5 1 10 100 1000 time t(ms) transient thermal resistance q j-a (?c/w) 30 20 10 2 0 0 25 50 75 100 125 150 ambient temperature ta(?c) maximum power dissipation p c (w) with infinite heatsink without heatsink e0.05 e0.1 e1 e0.5 e8 e5 0 50 120 100 cut-off frequency f t (mh z ) (v ce =12v) emitter current i e (a) typ 0 0 2 4 8 6 26 4 collector-emitter voltage v ce (v) collector current i c (a) 0.7ma 1.5ma 1ma 2ma 3ma 5ma 10ma 20ma 0.5ma 0.4ma i b =0.3ma 0 6 8 4 2 125?c (case temp) 25?c (case temp) e30?c (case temp) 0.03 0.1 1 5 10 100 500 1000 10000 5000 collector current i c (a) dc current gain h fe (v ce =2v) 0.5 typ 10 3 5 200 100 50 0.05 1 0.1 0.5 10 20 5 collector-emitter voltage v ce (v) collector current i c (a) without heatsink natural cooling dc 10ms 1ms v ce (sat) e i b characteristics (typical) 0 3 2 1 0.3 5 10 1 100 50 base current i b (ma) collector-emitter saturation voltage v ce(sat) (v) i c =6a 2a 4a collector current i c (a) dc current gain h fe 0.03 0.05 0.5 1 5 10 0.1 100 50 30 500 1000 5000 10000 (v ce =2v) 125?c 25?c e30?c h fe e i c temperature characteristics (typical) silicon npn triple diffused planar transistor (complement to type 2sb1258) application : driver for solenoid, relay and motor, series regulator, and general purpose symbol v cbo v ceo v ebo i c i b p c tj t stg ratings 120 120 6 6( pulse 10) 1 30(tc=25?) 150 ?5 to +150 unit v v v a a w ? ? n absolute maximum ratings n electrical characteristics ratings 10 max 10 max 120 min 2000 min 1.5 max 100 typ 70 typ unit m a ma v v mhz pf conditions v cb =120v v eb =6v i c =10ma v ce =2v, i c =3a i c =2a, i b =3ma v ce =12v, i e =?.1a v cb =10v, f=1mhz (ta=25?) (ta=25?) symbol i cbo i ebo v (br)ceo h fe v ce (sat) f t c ob external dimensions fm20(to220f) ?.3 ?.2 10.1 ?.2 4.0 ?.2 16.9 ?.3 13.0min 8.4 ?.2 0.8 ?.2 3.9 ?.2 2.54 2.54 1.35 ?.15 0.85 +0.2 -0.1 1.35 ?.15 2.2 ?.2 4.2 ?.2 2.8 c 0.5 2.4 ?.2 0.45 +0.2 -0.1 be c a b n typical switching characteristics (common emitter) v cc (v) 30 r l ( ) 10 i c (a) 3 v bb2 (v) ?.5 i b2 (ma) ? t on ( m s) 0.5typ t stg ( m s) 5.5typ t f ( m s) 1.5typ i b1 (ma) 3 v bb1 (v) 10 weight : approx 2.0g a. part no. b. lot no. b c e (2.5k w )(200 w ) equivalent circuit
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