2SB1427 transistors power transistor ( ? 20v, ? 2a) 2SB1427 ! ! ! ! features 1) low saturation voltage, typically v ce(sat) = ? 0.5v at i c /i b = ? 1a / ? 50ma. 2) excellent dc current gain characteristics. ! ! ! ! external dimensions (units : mm) (3) emitter (2) collector (1) base eiaj : sc-62 1.5 0.4 1.5 0.4 1.6 0.5 3.0 0.4 1.5 ( 3 ) 4.5 ( 1 ) ( 2 ) 0.5 4.0 2.5 1.0 rohm : mpt3 ! ! ! ! absolute maximum ratings (ta=25 c) parameter symbol v cbo v ceo v ebo i c p c limits ? 20 ? 20 ? 6 ? 2 0.5 2 unit v v v a(dc) ? 3 a(pulse) w c collector-base voltage collector-emitter voltage emitter-base voltage collector current collector power dissipation junction temperature tj tstg 150 ? 55 ~ + 150 c storage temperature ? 1 single pulse, pw = 10ms ? 2 when mounted on a 40 40 0.7mm ceramic board. ? 1 ? 2 ! ! ! ! packaging specifications and h fe type 2SB1427 mpt3 e t100 bj 1000 package h fe code basic ordering unit (pieces) marking denotes h fe ? ? ! ! ! ! electrical characteristics (ta=25 c) parameter symbol min. typ. max. unit conditions bv cbo bv ceo bv ebo i cbo i ebo v ce(sat) h fe f t cob ? 20 ? 20 ? 6 ? ? 390 ? ? ? ? ? ? ? ? 90 30 ? ? ? ? 0.5 ? 0.5 820 ? ? v v v a a ? mhz pf i c = ? 50 a i c = ? 1ma i e = ? 50 a v cb = ? 16v v eb = ? 5v ??? 0.5 v i c /i b = ? 1a/ ? 500ma v ce /i c = ? 6v/ ? 0.5a v ce = ? 10v , i e = 10ma , f = 30mhz v cb = ? 10v , i e = 0a , f = 1mhz collector-base breakdown voltage collector-emitter breakdown voltage emitter-base breakdown voltage collector cutoff current emitter cutoff current collector-emitter saturation voltage dc current transfer ratio transition frequency output capacitance measured using pulse current. ? ?
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