smd type transistors 1 www.kexin.com.cn silicon npn epitaxial planar type 2SC4543 features high transition frequency f t small collector output capacitance cob wide current range. absolute maximum ratings ta = 25 parameter symbol rating unit collector-base voltage v cbo 110 v collector-emitter voltage v cer * 100 v collector-emitter voltage v ceo 50 v emitter-base voltage v ebo 3.5 v peak collector current i cp 300 ma collector current i c 150 ma collector power dissipation p c 1.0 w junction temperature t j 150 storage temperature t stg -55to+150 *r eb =1.2k electrical characteristics ta = 25 parameter symbol testconditons min typ max unit collector cutoff current i ceo v ce =35v,i b =0 10 a collector-base voltage v cbo i c =100a,i e =0 110 v collector-emitter voltage v cer i c =500a,r be =470 100 v collector-emitter voltage v ceo i c =1ma,i b =0 50 v emitter-base voltage v ebo i e = 100 a, i c =0 3.5 v forward current transfer ratio h fe v ce =5v,i c = 100 ma 20 ? collector-emitter saturation voltage v ce(sat) i c =150ma,i b =15ma 0.5 v f t1 v cb =10v,i e = -10 ma, f = 200 mhz 300 mhz f t2 v cb =10v,i e = -110 ma, f = 200 mhz 350 mhz collector output capacitance c ob v cb =30v,i e =0,f=1mhz 3 pf *r eb =1.2k transition frequency marking marking 1f
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