1/3 www.rohm.com c 2009 rohm co., ltd. all rights reserved. 2009.12 - rev.c high-frequency amplifier transistor (20v, 50ma, 1.5ghz) 2sc5661 / 2sc4725 / 2sc4082 / 2sc3837k ? features 1) high transition frequency. (typ. f t = 1.5ghz) 2) small rbb? ? cc and high gain. (typ. 6ps) 3) small nf. ? packaging specifications and h fe type 2sc4725 emt3 np ac ? tl 3000 2sc5661 vmt3 np ac ? t2l 8000 2sc4082 umt3 np 1c ? t106 3000 2sc3837k smt3 np ac ? t146 3000 ? denotes h fe package h fe marking code basic ordering unit (pieces) ? absolute maximum ratings (ta=25 ?c) parameter symbol v cbo v ceo v ebo i c p c tj tstg limits 30 20 3 50 0.2 150 ?55 to +150 unit v v v ma 0.15 2sc4082, 2sc3837k 2sc5661, 2sc4725 w c c collector-base voltage collector-emitter voltage emitter-base voltage collector current collector power dissipation junction temperature storage temperature ? dimensions (unit : mm) ( 2 ) ( 1 ) 2.8 1.6 0.4 ( 3 ) 2.9 1.9 0.95 0.95 0.8 0.15 0.3min. 1.1 (2) base (3) collector (1) emitter (3) collector (1) emitter (2) base (3) collector (1) emitter (2) base each lead has same dimensions each lead has same dimensions 2sc4725 2sc4082 2sc3837k 2sc5661 rohm : vmt3 rohm : emt3 eiaj : sc-75a rohm : umt3 eiaj : sc-70 rohm : smt3 eiaj : sc-59 (1) base (2) emitter (3) collector ? electrical characteristics (ta=25 ?c) parameter symbol min. typ. max. unit conditions bv cbo bv ceo bv ebo i cbo i ebo h fe f t cob rbb' cc nf 30 20 3 ? ? 82 600 ? ? ? ? ? ? ? 1500 0.9 ? ? ? 0.5 0.5 180 ? 1.5 v v v a a ? mhz pf i c = 10a i c = 1ma i e = 10a v cb = 15v v eb = 2v v ce(sat) ?? 0.5 v i c /i b = 20ma/4ma v ce /i c = 10v/10ma v ce = 10v , i e = ? 10ma , f = 200mhz v cb = 10v , i e = 0a , f = 1mhz v cb = 10v , i c = 10ma , f = 31.8mhz v ce = 12v , i c = 2ma , f = 200mhz , rg = 50 ? 613ps ? 4.5 ? db collector-base breakdown voltage collector-emitter breakdown voltage emitter-base breakdown voltage collector cutoff current emitter cutoff current dc current transfer ratio transition frequency output capacitance collector-emitter saturation voltage collector-base time constant noise factor this product might cause chip aging and breakdown under the large electrified environment. please consider to design esd protection circuit.
2/3 www.rohm.com c 2009 rohm co., ltd. all rights reserved. 2009.12 - rev.c data sheet 2sc5661 / 2sc4725 / 2sc4082 / 2sc3837k ? electrical characteristic curves 0.1 0.2 0.5 1 2 5 10 20 50 10 collector current : i c (ma) fig.1 dc current gain vs. collector current dc current transfer ratio :h fe 100 20 50 200 500 ta=25 c v ce =10v 0.1 0.2 0.5 1 2 5 10 20 5 0 10 collector current : i c (ma) fig.2 collector-emitter saturation voltag e vs. collector current collector saturation voltage :v ce(sat) (mv) 100 20 50 200 500 ta=25 c i c /i b =5 0.1 0.2 0.5 1 2 5 10 20 50 0.1 collector to base voltage : v cb (v) fig.3 capacitance vs. reverse bias voltage output capacitance :c ob (pf) feedback capacitance :c re (pf) 1.0 0.2 0.5 2.0 5.0 ta=25 c f=1mhz i e =0a cob cre ?0.1 ?0.2 ?0.5 ?1 ?2 ?5 ?10 ?20 ?50 100 emitter current : i e (ma) fig.4 gain bandwidth product vs. emitter current transition frequency : f t (mhz) 1000 200 500 2000 5000 ta=25 c v ce =10v 0.1 0.2 0.5 1 2 5 10 20 5 0 1 collector current : i c (ma) fig.5 collector to base time constanc e vs. collector current collector to base time constant : c c rbb' (ps) 10 2 5 20 50 ta=25 c v ce =10v f=31.8mhz 0.1 0.2 0.5 1 2 5 1 0 0 frequency : f (ghz) fig.6 insertion gain vs. frequency insertion gain : is 21el 2 (db) 5 10 15 20 25 ta=25 c v ce =10v i c =10ma collector current : ic (ma) fig.7 insertion gain vs. collector curre nt insertion gain : is 21el 2 (db) 0.5 1 2 5 10 20 5 0 0 5 10 15 20 25 ta=25 c v ce =12v f=200mhz 02 4 6 81012 0 collector to emitter voltage : v ce ( v) fig.8 insertion gain vs. collector voltage insertion gain : is 21el 2 (db) 5 10 15 20 25 30 ta=25 c i c =2ma f=200mhz 0.1 0.2 0.5 1 2 5 10 20 5 0 0 collector current : i c (ma) fig.9 noise factor vs. collector curre nt noise figure : nf(db) 10 20 ta=25 c v ce =12v f=200mhz
3/3 www.rohm.com c 2009 rohm co., ltd. all rights reserved. 2009.12 - rev.c data sheet 2sc5661 / 2sc4725 / 2sc4082 / 2sc3837k 02 4681012 0 collector to emitter voltage : v ce ( v) fig.10 noise factor vs. collector voltage noise figure : nf(db) 15 5 10 25 20 30 ta=25 c i c =2ma f=200mhz
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