, ij nc. 20 stern ave. springfield, new jersey 07081 u.s.a. telephone: (973) 376-2922 (212)227-6005 fax: (973) 376-8960 npn1 ghz wideband transistor BF748 features ? stable oscillator operation ? high current gain ? low feedback capacitance ? good thermal stability. description low cost npn transistor in a plastic sot54 fto-92 variant) envelope. it is intended for vhp and uhf tv tuner applications and can be used as a mixer and/or oscillator. quick reference data pinning pin description 1 2 3 collector emitter base symbol vc80 vceq vebo icm p? *r parameter collector-base voltage collector-emitter voltage emitter-base voltage peak collector current total power dissipation transition frequency conditions open emitter open base open collector uptot. = 75c(note1) i0 - 15 ma; vce = 10 v; f = 500 mhz min. - - - - - 0.8 typ. - - - - - 1.2 max. 30 20 ' 3 50 00 1.6 unit v v v ma mw ghz limiting values in accordance with the absolute maximum system (i ec 134). symbol vcbo vck, vgk icm p? t* t, parameter collector-base voltage collector-emitter voltage emitter-base voltage peak collector current total power dissipation storage temperature junction temperature conditions open emitter open base open collector uptot, = 75c(note1) min. - - - - - -55 - max. 30 20 3 50 500 150 150 unit v v v ma mw c c note 1. t, is the temperature at the soldering point of the collector lead, 4 mm from the body. vi .semi-c (inductors reserves the right to change lest conditions, parameter limits ,md packuge dimensions without notice information furnished by nj scmi-conductois h believed to he birth accurate and reliable .it the lime or going to prws. however \ seini-t iwjutlors .bsuinct no ^pi'iisibiliiy tor ;my emirs ,>r umissiuns jiscuvured in its u.se nj seini-cuinlikh.rs cncuuranes n-.ri nirrs h> u-iik 'h.ll ilmhl-^hi-r'l? ir^ .?nrr.'nr iwthre rtlncinu ,irtfi*n
npn 1 ghz wideband transistor BF748 thermal resistance symbol *** parameter thermal resistance from junction to soldering point conditions uptot,= 75c(note1) thermal resistance 150 k/w note 1. t. is the temperature at the soldering point of the collector lead, 4 mm from the body. characteristics t, = 25 "c unless otherwise specified. symbol ick h* ft c. gum parameter collector cut-off current dc current gain transition frequency feedback capacitance maximum unilateral power gain (notel) conditions ie = 0;vob = 10v lc = 2ma;vce=10v l0=15ma;vce = 10v;f=500mhz le = i,-0;vcb=10v;f=1mhz lc ? 15 ma; v& * 10 v; f = 100 mhz min. - 40 0.8 - ? typ. - 95 1.2 0.65 25 max. 100 250 1.6 - ? unit na ghz pf db note 1. gum l? |
