1/2 www.rohm.com c 2009 rohm co., ltd. all rights reserved. 2009.04 - rev.c power transistor ( ? 50v, ? 3a) 2sa1797 z features z dimensions (unit : mm) 1) low saturation voltage. v ce (sat) = ? 0.35v (max.) at i c / i b = ? 1a / 50ma. 2) excellent dc current gain characteristics. 3) complements the 2sc4672. z packaging specifications type 2sa1797 mpt3 pq t100 1000 p ackage h fe c ode b asic ordering unit (pieces) m arking ag ? ? denotes h fe z absolute maximum ratings (ta=25 c) parameter symbol v cbo v ceo v ebo i c p c tj tstg limits ? 50 ? 50 ? 6 ? 3 0.5 2 150 ? 55 to + 150 unit v v v a (dc) ? 6 a (pulse) ? 1 w c c ? 1 single pulse, pw = 10ms c ollector-base voltage c ollector-emitter voltage e mitter-base voltage c ollector current c ollector power d issipation j unction temperature s torage temperature ? 2 2sa1797 ? 2 when mounted on a 40 40 0.7mm ceramic board. + + z 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 fe2 h fe1 f t cob ? 50 ? 50 ? 6 ? ? ? ? ? ? ? ? ? ? ? 0.15 200 36 ? ? ? ? 0.1 ? 0.1 ? 0.35 ? ? v v v a a v mhz pf i c =? 50 a i c =? 1ma i e =? 50 a v cb =? 50v v eb =? 5v i c /i b =? 1a/ ? 50ma ? v ce /i c =? 2v/ ? 1.5a v ce /i c =? 2v/ ? 0.5a v ce =? 2v, i e = 0.5a, f = 100mhz 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 45 270 82 ? ?? ? ? ? ? ? ? measured using pulse current mpt3 (1)base (2)collector (3)emitter 1.5 0.4 1.6 0.5 3.0 0.4 0.4 1.5 1.5 (3) (2) (1) 4.5 0.5 4.0 2.5 1.0
2/2 www.rohm.com c 2009 rohm co., ltd. all rights reserved. 2009.04 - rev.c data sheet 2sa1797 z electrical characteristic curves 010 6789 45 23 1 collector to emitter voltage : v ce (v ) fig.1 grounded emitteroutput characteristics 2.0 0 1 1.2 1.4 1.6 1.8 200m 400m 600m 800m collector current : l c (a) ta = 25 c l b = 10ma 9ma 8ma 7ma 6ma 5ma 4ma 3ma 2ma 1ma fig.2 grounded emitter propagatio n characteristics ? 0.2 ? 0.4 ? 0.6 ? 0.8 ? 1.0 ? 1.2 ? 1.4 0 collector current : i c ( m a) base to emitter voltage : v be (v) ? 10 ? 5 ? 2 ? 1 ? 0.5 ? 0.2 ? 0.1 ? 0.05 ? 0.02 ? 0.01 ? 5m ? 2m ? 1m v ce = 2v ta = 100 c ta = 25 c ta =? 40 c - 1m - 5m - 0.02 - 0.1 - 0.5 - 2 - 5 - 1 0 - 2m - 0.01 - 0.05 - 0.2 - 1 5 10 20 50 100 200 500 1000 2000 5000 collector current : i c (a) dc current gain : h fe fig.3 dc current gain vs. collector current v ce = 2v ta = 100 c ta =? 40 c ta = 25 c - 1m - 5m - 0.02 - 0.1 - 0.5 - 2 - 5 - 10 - 2m - 0.01 - 0.05 - 0.2 - 1 - 0.01 - 0.02 - 0.05 - 0.1 - 0.2 - 0.5 - 1 collector current : i c (a) collector saturation voltage : v ce (sat) (v) fig.4 collector-emitter saturation voltage vs. collector curre nt l c /l b = 20 ta = 100 c ta =? 40 c ta = 25 c 0.1 1 10 100 1 0.1 0.01 0.001 10 collector to emitter voltage : v ce ( v) collector current : l c (a) fig.5 safe operating area ta = 25 c single non repetitive pulse mounted on epoxy board 12mm 15mm t 0.8mm 10ms 1ms dc 100ms
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