,j 20 stern ave. springfield, new jersey 07081 u.s.a. telephone: (973) 376-2922 (212)227-6005 fax: (973) 376-8960 BF240, bf241 npn silicon epitaxial planar transistors designed for emitter-grounded am and fm amplifier stages i* max. q5 # plastic case = jedec to-92 to-18 compatible the case is impervious to light weight approximately 0.18 g dimensions in mm absolute maximum ratings collector base voltage collector emitter voltage emitter base voltage collector current base current power dissipation at tamb = 25 c junction temperature storage temperature range symbol vcbo vceo vebo lo ib p? t] ts value 40 40 4 25 2 3001' 150 -55 .. . +150 unit v v v ma ma mw cc 'c " valid provided that leads are kept at ambient temperature at a distance ot 2 mm from case nj semi-conductors reserves the right to change test conditions, parameter limits and package dimensions without notice. information furnished by nj semi-conductors is believed to be both accurate and reliable at the time of going to press. however, nj semi-conductors assumes no responsibility for any errors or omissions discovered in its use. nj semi-conductors encourages customers to verify that datasheets are current before placing orders. quality semi-conductors
BF240, bf241 characteristics at tamb = 25 c dc current gain at vce - 1 0 v, lc = 1 ma BF240 bf241 base emitter voltage at vcb = 1 0 v, lc = 1 ma collector cutoff current at vcb = 20 v thermal resistance junction to ambient collector base breakdown voltage at lc = 1 0 /ua collector emitter breakdown voltage at lc = 2 ma emitter base breakdown voltage at ie = 1 0 ^a gain bandwidth product at vcb = 10v, lc = 1 ma, f= 100mhz BF240 bf241 feedback capacitance at vcb= 10 v, lc = 1 ma, f = 1 mhz noise figure (emitter grounded) at vcb = 10v, lc = 1 ma gs = 5 ms, t = 200 khz ys = (6.6 - j 3.3) ms, f = 1 00 mhz output admittance at vcb = 10 v, lc = 1 ma, f = 10.7 mhz at vcb = 10 v, lc = 1 ma, f = 470 khz symbol hfe hfe vbe icbo rlha v(bh)cbo v(br)ceo v(bh)ebo fj fr -cre f f g? g? min. 67 36 650 - - 40 40 4 - - - - typ. - 700 - - - - - 430 400 0.27 1.5 1.6 - max. 220 125 740 100 420" - - - _ - 3.5 10.5 8.3 value - mv na k/w v v v mhz mhz pf db db ps ms 11 valid provided that leads are kept at ambient temperature at a distance of 2 mm from case
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