unisonic technologies co., ltd bu941 npn silicon transistor www.unisonic.com.tw 1 of 5 copyright ? 2015 unisonic technologies co., ltd qw-r203-025.d npn power darlington high voltage ignition coil driver ? features * npn darlington * integrated antiparallel collector-emitter diode ? applications * high ruggedness electric ignitions ? internal schematic diagram c b (3) (1) (2) e ? ordering information ordering number pin assignment lead free halogen free package 1 2 3 packing bu941l-t3p-t BU941G-T3P-T to-3p b c e tube bu941l-ta3-t bu941g-ta3-t to-220 b c e tube bu941l-tq2-t bu941g-tq2-t to-263 b c e tube bu941l-tq2-r bu941g-tq2-r to-263 b c e tape reel note: pin assignment: e: emitter b: base c: collector ? marking
bu941 npn silicon transistor unisonic technologies co., ltd 2 of 5 www.unisonic.com.tw qw-r203-025.d ? absolute maximum ratings parameter symbol ratings unit collector-emitter voltage v ces 500 v collector-emitter voltage v ceo 400 v emitter-base voltage v ebo 5 v collector current i c 15 a collector peak current i cm 30 a base current i b 1 a base peak current i bm 5 w to-3p 155 w to-220 150 w total power dissipation (tc=25 ? c) to-263 p d 65 w junction temperature t j +175 ? c storage temperature t stg -65 ~ +175 ? c note absolute maximum ratings are those values beyond which the device could be permanently damaged. absolute maximum ratings are stress ratings only and functional device oper ation is not implied. ? electrical characteristics (tc=25 ? c, unless otherwise specified) parameter symbol test conditions min typ max unit collector-emitter sustaining voltage v ceo(sus) * i c =1ma, v clamp =400v, l=10mh (see fig. 1) 400 v collector cut-off current i ces v ce =500v, v be =0 v ce =500v, v be =0, t j =125 ? c 100 0.5 a ma collector cut-off current i ceo v ce =450v, i b =0 v ce =450v, i b =0, t j =125 ? c 100 0.5 a ma emitter cut-off current i ebo v eb =5v, i c =0 20 ma collector-emitte r saturation voltage v ce(sat) * i c =8a, i b =100ma i c =10a, i b =250ma i c =12a, i b =300ma 1.6 1.8 2 v base-emitter satura tion voltage v be(sat) * i c =8a, i b =100ma i c =10a, i b =250ma i c =12a, i b =300ma 2.2 2.5 2.7 v dc current gain h fe * v ce =10v, i c =5a 300 diode forward voltage v f i f =10a 2.5 v functional test v cc =24v, v clamp =400v, l=7mh (see functional test circuit) 10 a fall time t f 0.5 storage time t s v cc =12v, v clamp =300v, v be =0, r be =47 ? , l=7mh, i c =7a, i b =70ma (see fig.2) 15 s * pulsed: pulse duration=300 s, duty cycle 1.5%
bu941 npn silicon transistor unisonic technologies co., ltd 3 of 5 www.unisonic.com.tw qw-r203-025.d ? function test circuit
bu941 npn silicon transistor unisonic technologies co., ltd 4 of 5 www.unisonic.com.tw qw-r203-025.d ? typical characteristics 10 3 10 2 4 2 8 6 4 2 8 6 4 2 10 1 10 -1 8 6 4 2 8 6 2 collector current, i c (a) dc current gain v ce =2v 125 -40 tc=25 4 8 6 1 10 3 10 2 4 2 8 6 4 2 8 6 4 2 10 1 10 -1 8 6 4 2 8 6 2 collector current, i c (a) dc current gain v ce =10v 125 -40 tc=25 4 1 6 8 2.5 1.5 3.5 0 100 50 150 base current, i b (ma) 0.5 200 4.0 10a 8 6 4 1 2 1.2 1 0.8 0.6 0.4 0.2 1 8 6 4 2 10 collctor-emitter saturation voltage 0 h fe =100 -40 125 tc=25 collector-emitter saturation voltage, v ce(sat) (v) collector current, ic (ma) 1.4 12 collector-emitter saturation voltage, v ce(sat) (v) collector-emitter saturation voltage dc current gain, h fe dc current gain, h fe 2.2 2 1.8 1.6 1.4 1.2 1 8 6 4 2 10 collector current, i c (a) 0 -40 125 tc=25 2.4 12 10 1 10 -1 18 6 4 2 collector current, i c (a) switching time 10 vclamp=300v, v cc =12v, h fe =100, r be =47 , l=7mh, tc=25 12 t s t f base-emitter saturation voltage h fe =100
bu941 npn silicon transistor unisonic technologies co., ltd 5 of 5 www.unisonic.com.tw qw-r203-025.d ? typical characteristics(cont.) safe operating area collector current, ic (a) 8 6 4 2 10 1 10 0 8 6 4 2 8 6 4 2 10 -1 4 2 10 -2 10 0 8 6 4 2 10 1 8 6 4 2 10 2 8 6 4 2 ic max pulsed collector-emitter voltage, v ce (v) * for single non repelitive pulse ic max cont 10 s 10ms d.c. 100 s 1ms pulse operation * utc assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all utc products described or contained herein. utc products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. the information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.
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