'j.s.iis.u , o ne. 20 stern ave. springfield, new jersey 07081 u.s.a. telephone: (973) 376-2922 BU941/BU941p BU941pfi high voltage ignition coil driver npn power darlington . npn darlington . integrated antiparallel collector-emitter diode . very rugged bipolar technology . high operating junction temperature . wide range of packages applications . high ruggedness electronic ignitions to-3 to-218 isowatt218 internal schematic diagram for to-3 emitter: pin 2 base: pinl collector: tab absolute maximum ratings symbol vces vceo vebo ic icm ib ibm plot tstg tj parameter collector-emitter voltage (vbe = 0) collector-emitter voltage (is = 0) emitter-base voltage (ic = 0) collector current collector peak current base current base peak current total dissipation at tc = 25 c storage temperature max. operating junction temperature value BU941 BU941p bub941pfi 500 400 5 15 30 1 5 180 -65 to 200 200 155 -65 to 1 75 175 65 -65 to 175 175 unit v v v a a a a w c c qualify semi-conductors
BU941 / BU941p/ bub941pfi thermal data rthj-case thermal resistance junction-case max to-3 0.97 to-218 0.97 isowatt218 2.3 c/w electrical characteristics (tcase = 25 c unless otherwise specified) symbol ices iceo iebo vceo(sus)* vce(sat)* vbe(sat)* hfe* vf ts tf parameter collector cut-off current (vbe = 0) collector cut-off current (ib = 0) emitter cut-off current (lc = 0) collector-emitter sustaining voltage (ib = 0) collector-emitter saturation voltage base-emitter saturation voltage dc current gain diode forward voltage functional test (see fig. 1) inductive load storage time fall time (see fig. 3) test conditions vce = 500 v vce = 500v tj = 125c vce = 450 v vce = 450 v tj = 1 25 c veb = 5 v ic = 100 ma l= 10 mh vciamp = 400 v (see fig.4) ic = 8a ib = 100ma ic = 10 a ib = 250 ma lc = 12 a ib = 300 ma lc = 8a ib = 100ma lc = 10 a ib = 250 ma ic = 12 a ib = 300 ma lc = 5 a vce = 1 0 v if = 10a vcc = 24 v vciamp = 400 v l = 7 mh vcc = 12v vciamp = 300v vbe = 0 rbe = 47 o l = 7 mh lc = 7 a ib = 70 ma min. 400 300 10 typ. 15 0.5 max. 100 0.5 100 0.5 20 1.6 1.8 2 2.2 2.5 2.7 2.5 unit ua ma ua ma ma v v v v v v v v a us us * pulsed: pulse duration = 300 us, duty cycle 1.5 % safe operating area dc current gain ic(a) * l-or single non repeliliva pulse 10' 10" 10
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