ksr-4070-000 1 SRC1211K npn silicon transistor descriptions ? switching application ? interface circuit and driver circuit application features ? with built-in bias resistors ? simplify circuit design ? reduce a quantity of parts and manufacturing process ? high packing density ordering information type no. marking package code SRC1211K rd sot-623f outline dimensions unit : mm s s e e m m i i c c o o n n d d u u c c t t o o r r ? ? ? ? equivalent circuit r 1 b(in) e(common) c(out) r 1 = 10k ? ? ? ? pin connections 1. base 2. emitter 3. collector
ksr-4070-000 2 src1211 k absolute maximum ratings (ta=25 c) characteristic symbol ratings unit collector-base voltage v cbo 50 v collector-emitter voltage v ceo 50 v emitter-base voltage v ebo 5 v collector current i c 100 ma power dissipation p d 100 mw junction temperature t j 150 c storage temperature t stg -55 ~ 150 c electrical characteristics (ta=25 c) characteristic symbol test condition min. typ. max. unit collector cut-off current i cbo v cb =50v, i e =0 - - 500 na emitter cut-off current i ebo v eb =5v, i c =0 - - 500 na dc current gain h fe v ce =5v, i c =1ma 120 - - - collector-emitter saturation voltage v ce(sat) i c =10ma, i b =0.5ma - 0.1 0.3 v transition frequency f t * v ce =10v, i c =5ma - 250 - mhz input resistance r 1 - - 10 - k ? * : characteristic of transistor only electrical characteristic curves fig. 2 v ce(sat) - i c fig. 1 h fe - i c
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