1/3 www.rohm.com c 2009 rohm co., ltd. all rights reserved. 2010.09 - rev.d general purpose small signal amplifier (50v, 0.15a) 2sc4081ub ? applications ? dimensions (unit : mm) general purpose small signal amplifier ? features 1) low cob. cob=2.0pf (typ.) 2) complements the 2sa1576ub. ? structure npn silicon epitaxial planar transistor ? absolute maximum (ta=25 ? c) parameter collector-base voltage collector-emitter voltage emitter-base voltage collector current power dissipation junction temperature range of storage temperature v cbo v ceo v ebo p d i cp tj tstg 60 v v v ma mw ma ? 1 ? 1 pw=1ms single pulse ? 2 each terminal mounted on a recommended land ? 2 c c 50 7 150 i c 200 200 150 ? 55 to + 150 symbol limits unit ? electrical characteristics (ta=25 ? c) parameter collector-base breakdown voltage collector-emitter breakdown voltage emitter-base breakdown voltage collector cutoff current emitter cutoff current dc current gain collector-emitter saturation voltage transition frequency output capacitance symbol bv cbo bv ceo bv ebo i cbo i ebo h fe v ce(sat) f t cob min. 60 50 7 ? ? 120 ? ? ? ? ? ? ? ? ? ? 180 2.0 ? ? ? 100 100 390 400 ? 3.5 vi c = 50 a i c = 1ma i e = 50 a v cb = 60v v eb = 7v v ce = 6v, i c = 1ma i c /i b = 50ma/5ma v ce = 12v, i e =? 2ma, f = 100mhz v cb = 12v, i e = 0a, f = 1mhz v v na na ? mv mhz pf typ. max. unit conditions h fe rank categories rank q 120 to 270 h fe r 180 to 390 umt3f each lead has same dimensions 2.0 0.32 0.65 0.65 1.3 2.1 1.25 0.425 0.425 (1) (2) (3) 0.9 0.53 0.53 0.13 (1) base (2) emitter (3) collector abbreviated symbol : b ? = denotes h fe ?
2/3 www.rohm.com c 2009 rohm co., ltd. all rights reserved. 2010.09 - rev.d data sheet 2sc4081ub ? electrical characteristic curves fig.1 grounded emitter propagatio n characteristics 0 0.1 0.2 0.5 2 20 50 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1 5 10 ta = 100 c v ce =6v collector current : i c (ma) base to emitter voltage : v be (v) 25 c ? 55 c fig.2 grounded emitter output characteristics ( ) 0 20 40 60 80 100 0.4 0.8 1.2 1.6 2 .0 0 collector current : i c (ma) collector to emitter voltage : v ce (v ) 0.05ma 0.10ma 0.15ma 0.25ma 0.30ma 0.35ma 0.20ma ta=25 c i b =0a 0.40ma 0.50ma 0.45ma 0 0 2 8 10 4 8 12 16 4 6 2 0 i b =0a ta=25 c collector current : i c (ma) collector to emitter voltage : v ce (v ) 3 a 6 a 9 a 12 a 15 a 18 a 21 a 24 a 27 a 30 a fig.3 grounded emitter output characteristics ( ? ) 0.2 20 10 0.5 1 2 5 10 20 50 100 20 0 50 100 200 500 v ce =5v 3v 1v ta=25 c fig.4 dc current gain vs. collector current ( ) dc current gain : h fe collector current : i c (ma) 0.2 0.5 1 2 5 10 20 50 100 20 0 20 10 50 100 200 500 25 c ? 55 c ta=100 c v ce = 5v fig.5 dc current gain vs. collector current ( ? ) dc current gain : h fe collector current : i c (ma) f ig. 6 collector-emitter saturation voltage vs. collector current 0.2 collector saturation voltage : v ce(sat) (v ) collector current : i c (ma) 0.01 0.02 0.05 0.1 0.2 0.5 0.5 1 2 5 10 20 50 100 20 0 i c /i b =50 20 10 ta=25 c f ig.7 collector-emitter saturation voltage vs. collector current ( ) 0.2 collector saturation voltage : v ce(sat) (v ) collector current : i c (ma) 0.01 0.02 0.05 0.1 0.2 0.5 0.5 1 2 5 10 20 50 100 20 0 i c /i b =10 ta=100 c 25 c ? 55 c f ig.8 collector-emitter saturation voltage vs. collector current ( ? ) collector saturation voltage : v ce(sat) ( v) collector current : i c (ma) 0.2 0.01 0.02 0.05 0.1 0.2 0.5 0.5 1 2 5 10 20 50 10 0 i c /i b =50 ta=100 c 25 c ? 55 c fig.9 gain bandwidth product vs. emitter current 50 ? 0.5 ? 1 ? 2 ? 5 ? 10 ? 20 ? 50 ? 10 0 100 200 500 ta=25 c v ce =6v emitter current : i e (ma) transition frequency : f t (mhz)
3/3 www.rohm.com c 2009 rohm co., ltd. all rights reserved. 2010.09 - rev.d data sheet 2sc4081ub fig.10 collector output capacitance vs . collector-base voltage emitter input capacitance vs. emitter-base voltage collector to base voltage : v cb (v) emitter to base voltage : v eb (v) collector output capacitance : cob ( pf) emitter input capacitance : cib ( pf) 0.2 0.5 1 2 5 10 20 50 1 2 5 10 20 cob ta=25 c f = 1mhz i e =0a i c =0a cib fig.11 base-collector time constant vs. emitter current ? 0.2 ? 0.5 ? 1 ? 2 ? 5 ? 1 0 base collector time constant : ccr bb' (p s) emitter current : i e (ma) 10 20 50 100 200 ta=25 c f=32mh z v cb =6v
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