to-92 plastic-encapsulate transistors BC237/238/239 transistor (npn) features amplifier dissipation npn silicon maximum ratings (t a =25 unless otherwise noted) symbol parameter value unit v ceo collector-emitter voltage BC237 bc238/239 45 25 v v ebo emitter-base voltage BC237 bc238/239 6 5 v i c collector current -continuous 0.1 a p c collector power dissipation 350 mw r ja thermal resistance, junction to ambient 357 /w r jc thermal resistance, junction to case 125 /w t j junction temperature 150 t stg storage temperature -55-150 to-92 1. collector 2. base 3. emitter 1 of 2 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification a,may,2011
electrical characteristics (t a =25 unless otherwise specified) parameter symbol test conditions m in t yp max u nit collector-base breakdown voltage v (br)cbo i c =100 a, i e =0 BC237 bc238/239 50 30 v collector-emitter breakdown voltage v (br)ceo i c =2ma, i b =0 BC237 bc238/239 45 25 v emitter-base breakdown voltage v (br)ebo i e =100 a, i c =0 BC237 bc238/239 6 5 v collector cut-off current i cbo v ce =50v, v be =0 BC237 v cb =30v,i e =0 bc238/239 15 na h fe(1) v ce =5v, i c =10 a BC237a BC237b/238b BC237c/238c/239c 90 150 270 h fe(2) v ce =5v, i c =2ma BC237 bc239 BC237a BC237b/238b BC237c/238c/239c 120 120 120 200 380 800 800 220 460 800 dc current gain h fe(3) v ce =5v, i c =100ma BC237a BC237b/238b BC237c/238c/239c 120 180 300 collector-emitter saturation voltage v ce(sat) i c =10ma, i b =0.5ma BC237/238/239 i c =100ma, i b =5ma BC237/239 bc238 0.2 0.6 0.8 v base-emitter saturation voltage v be(sat) i c =10ma,i b =0.5ma i c =100ma,i b =5ma 0.83 1.05 v base-emitter voltage v be v ce =5v, i c =0.1ma v ce =5v, i c =2ma v ce =5v, i c =100ma 0.55 0.5 0.83 0.7 v transition frequency f t v ce =3v,i c =0.5ma,f=100mhz BC237 bc238 bc239 v ce =5v,i c =10ma,f=100mhz BC237 bc238 bc239 150 150 150 100 120 140 200 240 280 mhz collector output capacitance c ob v cb =10v, i e =0, f=1mhz 4.5 pf emitter-base capacitance c ib v eb =0.5v, i c =0, f=1mhz 8 pf noise figure nf v ce =5v, i c =0.2ma, f=1khz, rs=2k ? bc239 v ce =5v, i c =0.2ma, f=1khz, rs=2k ? , f=200hz BC237 bc238 bc239 2 2 2 2 4 10 10 4 db 2 of 2 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification a,may,2011
|
