BU941/BU941p BU941pfi high voltage ignition coil driver npn power darlington n sgs-thomson preferred salestype n npn darlington n integrated antiparallel collector-emitter diode n very rugged bipolar technology n high operating junction temperature n wide range of packages applications n high ruggedness electronic ignitions internal schematic diagram september 1997 for to-3 emitter: pin 2 base: pin1 collector: tab absolute maximum ratings symbol parameter value unit BU941 BU941p bub941pfi v ces collector-emitter voltage (v be = 0) 500 v v ceo collector-emitter voltage (i b = 0) 400 v v ebo emitter-base voltage (i c =0) 5 v i c collector current 15 a i cm collector peak current 30 a i b base current 1 a i bm base peak current 5 a p tot total dissipation at t c =25 o c 180 155 65 w t stg storagetemperature -65to200 -65to175 -65to175 o c t j max. o perating junction temperature 200 175 175 o c 1 2 3 to-218 isowatt218 1 2 3 1 2 to-3 1/8
thermal data to-3 to-218 isowatt218 r thj-case thermal resistance junction-case max 0.97 0.97 2.3 o c/w electrical characteristics (t case =25 o c unless otherwise specified) symbol parameter test conditions min. typ. max. unit i ces collector cut-off current (v be =0) v ce =500v v ce =500v t j =125 o c 100 0.5 m a ma i ceo collector cut-off current (i b =0) v ce =450v v ce =450v t j =125 o c 100 0.5 m a ma i ebo emitter cut-off current (i c =0) v eb =5v 20 ma v ceo(sus ) * collector-emitter sustaining voltage i c = 100 ma l = 10 mh i b =0 v clamp = rated v ceo (see fig.4) 400 v v ce(sat) * collector-emitter saturation voltage i c =8a i b =100ma i c =10a i b = 250 ma i c =12a i b = 300 ma 1.6 1.8 2 v v v v be(s at) * base-emitter saturation voltage i c =8a i b =100ma i c =10a i b = 250 ma i c =12a i b = 300 ma 2.2 2.5 2.7 v v v h fe * dc current gain i c =5a v ce = 10 v 300 v f diode forward voltage i f =10a 2.5 v functional test (see fig. 1) v cc =24vv clamp = 400 v l= 7 mh 10 a ? ? t s t f inductive load storage time fall time (see fig. 3) v cc =12vv clamp = 300 v l= 7 mh i c =7a i b =70ma v be =0 r be =47 w 15 0.5 m s m s * pulsed: pulse duration = 300 m s, duty cycle 1.5 % safe operating area dc current gain BU941/BU941p/bub941pfi 2/8
dc current gain collector-emitter saturation voltage switching time inductive load (see fig.3) collector-emitter saturation voltage base-emitter saturation voltage BU941/BU941p/bub941pfi 3/8
figure 1: functional test circuit figure 2: functional test waveforms figure 3: switching time test circuit figure 4: sustaining voltage test circuit BU941/BU941p/bub941pfi 4/8
dim. mm inch min. typ. max. min. typ. max. a 11.00 13.10 0.433 0.516 b 0.97 1.15 0.038 0.045 c 1.50 1.65 0.059 0.065 d 8.32 8.92 0.327 0.351 e 19.00 20.00 0.748 0.787 g 10.70 11.10 0.421 0.437 n 16.50 17.20 0.649 0.677 p 25.00 26.00 0.984 1.023 r 4.00 4.09 0.157 0.161 u 38.50 39.30 1.515 1.547 v 30.00 30.30 1.187 1.193 e b r c d a p g n v u o p003f to-3 mechanical data BU941/BU941p/bub941pfi 5/8
dim. mm inch min. typ. max. min. typ. max. a 4.7 4.9 0.185 0.193 c 1.17 1.37 0.046 0.054 d 2.5 0.098 e 0.5 0.78 0.019 0.030 f 1.1 1.3 0.043 0.051 g 10.8 11.1 0.425 0.437 h 14.7 15.2 0.578 0.598 l2 16.2 0.637 l3 18 0.708 l5 3.95 4.15 0.155 0.163 l6 31 1.220 r 12.2 0.480 4 4.1 0.157 0.161 r a c d e h f g l6 ? l3 l2 l5 123 to-218 (sot-93) mechanical data p025a BU941/BU941p/bub941pfi 6/8
dim. mm inch min. typ. max. min. typ. max. a 5.35 5.65 0.210 0.222 c 3.3 3.8 0.130 0.149 d 2.9 3.1 0.114 0.122 d1 1.88 2.08 0.074 0.081 e 0.75 1 0.029 0.039 f 1.05 1.25 0.041 0.049 g 10.8 11.2 0.425 0.441 h 15.8 16.2 0.622 0.637 l1 20.8 21.2 0.818 0.834 l2 19.1 19.9 0.752 0.783 l3 22.8 23.6 0.897 0.929 l4 40.5 42.5 1.594 1.673 l5 4.85 5.25 0.190 0.206 l6 20.25 20.75 0.797 0.817 m 3.5 3.7 0.137 0.145 n 2.1 2.3 0.082 0.090 u 4.6 0.181 l1 a c d e h g m f l6 123 u l5 l4 d1 n l3 l2 p025c isowatt218 mechanical data BU941/BU941p/bub941pfi 7/8
information furnished is believed to be accurate and reliable. however, sgs-thomson microelectronics assumes no responsability for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may results from its use. no license is granted by implication or otherwise under any patent or patent rights of sgs-thomson microelectronics. specifications mentioned in this publication are subject to change without notice. this publication supersedes and replaces all information previously supplied. sgs-thomson microelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of sgs-thomson microelectonics. ? 1997 sgs-thomson microelectronics - printed in italy - all rights reserved sgs-thomson microelectronics group of companies australia - brazil - canada- china - france - germany - hong kong - italy - japan - korea - malaysia - malta - morocco - the netherlands - singapore - spain - sweden - switzerland - taiwan - thailand - united kingdom - u.s.a ... BU941/BU941p/bub941pfi 8/8
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