to-220-3l 1.base 2.collector 3.emitter jiangsu changjiang electron ics technology co., ltd to-220-3l plastic-encapsulate transistors 2SB857 transistor (pnp) features z low frequency power amplifier maximum ratings (t a =25 unless otherwise noted) electrical characteristics (t a =25 unless otherwise specified) parameter symbol test conditions min typ max unit collector-base breakdown voltage v (br)cbo i c =-10 a,i e =0 -70 v collector-emitter breakdown voltage v (br)ceo * i c =-50ma,i b =0 -50 v emitter-base breakdown voltage v (br)ebo i e =-10 a,i c =0 -5 v collector cut-off current i cbo v cb =-50v,i e =0 -1 a emitter cut-off current i ebo v eb =-5v,i c =0 -1 a h fe(1) * v ce =-4v, i c =-1a 60 320 dc current gain h fe(2) * v ce =-4v, i c =-0.1a 35 collector-emitter saturation voltage v ce(sat) * i c =-2a,i b =-200ma -1 v base-emitter voltage v be * v ce =-4v, i c =-1a -1 v transition frequency f t * v ce =-4v,i c =-500ma 15 mhz *pulse test: pulse width 300 s, duty cycle 2.0%. classification of h fe(1) rank b c d range 60-120 100-200 160-320 symbol parameter value unit v cbo collector-base voltage -70 v v ceo collector-emitter voltage -50 v v ebo emitter-base voltage -5 v i c collector current -4 a p c collector power dissipation 2 w r ja thermal resistance from junction to ambient 62.5 / w t j junction temperature 150 t stg storage temperature -55~+150 www.cj-elec.com 1 b,nov,2014
www.cj-elec.com 2 b,nov,2014 to-220-3l package outline dimensions m i n m ax m i n m ax a 4. 4 70 4. 67 0 0 . 17 6 0. 1 84 a 1 2 . 52 0 2 . 8 20 0. 0 99 0 . 11 1 b 0. 7 10 0. 91 0 0 . 02 8 0. 0 36 b1 1 . 17 0 1 . 3 70 0. 0 46 0 . 05 4 c 0. 3 10 0. 53 0 0 . 01 2 0. 0 21 c 1 1 . 17 0 1 . 3 70 0. 0 46 0 . 05 4 d 10 . 01 0 10 . 31 0 0 . 39 4 0. 4 06 e 8. 5 00 8. 90 0 0 . 33 5 0. 3 50 e 1 12 . 06 0 12 . 46 0 0 . 47 5 0. 4 91 e e1 4 . 98 0 5 . 1 80 0. 1 96 0 . 20 4 f 2. 5 90 2. 89 0 0 . 10 2 0. 1 14 h 0. 0 00 0. 30 0 0 . 00 0 0. 0 12 l 13 . 40 0 13 . 80 0 0 . 52 8 0. 5 43 l1 3 . 56 0 3 . 9 60 0. 1 40 0 . 15 6 3 . 73 5 3 . 9 35 0. 1 47 0 . 15 5 sy m bo l d im e n s io n s in m illim e t e r s d im e n s io n s in in c h e s 0. 10 0 t y p 2 . 54 0 t y p
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