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| to-92 plastic-encapsulate transistors bc556/BC557/bc558 transistor (pnp) features z high voltage z complement to bc546/bc547/bc548 maximum ratings (t a =25 unless otherwise noted) symbol parameter value unit v cbo collector-base voltage bc556 BC557 bc558 -80 -50 -30 v v ceo collector-emitter voltage -65 -45 -30 v v ebo emitter-base voltage -5 v i c collector current -continuous -100 ma p c collector power dissipation 625 mw t j junction temperature 150 t stg storage temperature -55-150 electrical characteristics (t a=25 unless otherwise specified) parameter symbol test conditions m in typ max unit collector-base breakdown voltage bc556 BC557 bc558 v cbo i c = -100 a, i e =0 -80 -50 -30 v collector-emitter breakdown voltage bc556 BC557 bc558 v ceo i c = -2ma , i b =0 -65 -45 -30 v emitter-base breakdown voltage v ebo i e = -100 a, i c =0 -5 v collector cut-off current bc556 BC557 bc558 i cbo v cb =- 70 v, i e =0 v cb = -45 v, i e =0 v cb = -25v, i e =0 -0.1 a collector cut-off current bc556 BC557 bc558 i ceo v ce = -60 v, i b =0 v ce = -40 v, i b =0 v ce = -25 v, i b =0 -0.1 a emitter cut-off current bc556 BC557 bc558 i ebo v eb = -5 v, i c =0 -0.1 a dc current gain bc556 BC557 bc558 BC557a bc556b/BC557b/bc558b BC557c h fe v ce =-5v, i c = -2ma 120 120 120 120 180 420 800 800 800 220 460 800 collector-emitter saturation voltage v ce(sat) i c =-100ma, i b = -5ma -0.65 v base-emitter saturation voltage v be(sat) i c = -100ma, i b =-5ma -1 v transition frequency f t v ce = -5v, i c = -10ma f = 100mhz 150 mhz to-92 1. collector 2. base 3. emitter tiger electronic co.,ltd a,may,2011
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