dated : 20/10/2005 semtech electronics ltd. ( subsidiary of sino-tech internatio nal holdings limited, a company listed on the hong kong stock exchange, stock code: 724 ) ? MMBTSD471 npn silicon epitaxial planar transistor audio frequency power am plifier applications. the transistor is subdivide d into three group o, y and g according to its dc current gain. on special request, thes e transistors can be manufactured in different pin configurations. sot-23 plastic package absolute maximum ratings (ta=25 o c) symbol value unit collector base voltage v cbo 40 v collector emitter voltage v ceo 30 v emitter base voltage v ebo 5 v collector current i c 1 a power dissipation p tot 200 mw junction temperature t j 150 o c storage temperature range t s -55 to +150 o c
dated : 20/10/2005 semtech electronics ltd. ( subsidiary of sino-tech internatio nal holdings limited, a company listed on the hong kong stock exchange, stock code: 724 ) ? MMBTSD471 characteristics at t amb =25 o c symbol min. typ. max. unit dc current gain at v ce =1v, i c =100ma current gain group o y g h fe h fe h fe 90 135 200 - - - 180 270 400 - - - collector emitter breakdown voltage at i c =10ma v (br)ceo 30 - - v collector base breakdown voltage at i c =100a v (br)cbo 40 - - v emitter base breakdown voltage at i e =100a v (br)ebo 5 - - v collector cutoff current at v cb =30v i cbo - - 0.1 a collector saturation voltage at i c =1.0a, i b =100ma v ce(sat) - - 0.5 v base saturation voltage at i c =1.0a, i b =100ma v be(sat) - - 1.2 v collector output capacitance at v cb =6v, f=1mhz c ob - 18 - pf transition frequency at v ce =6v, i c =10ma f t - 130 - mhz
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