buxd87 high voltage npn power transistor n reverse pins out vs standard ipak/dpak package n high voltage capability n high dc current gain n through-hole ipak (to-251) power package in tube (suffix o-1o) n surface-mounting dpak (to-252) power package in tape & reel (suffix ot4o) applications: n switch mode power supplies n general purpose switching description the buxd87 is manufactured using high voltage multi epitaxial planar technology for high switching speeds and high voltage withstand capability. ? internal schematic diagram april 1999 absolute maximum ratings symbol parameter value unit v cev collector-emitter voltage (v be = -1.5v) 1000 v v ceo collector-emitter voltage (i b = 0) 450 v v ebo emitter-base voltage (i c =0) 5 v i c collector current 0.5 a i cm collector peak current (t p <5ms) 1 a i b base current 0.3 a i bm base peak current (t p <5ms) 0.6 a p tot total dissipation at t c =25 o c20w t stg storage temperature -65 to 150 o c t j max. operating junction temperature 150 o c 3 2 1 ipak dpak to-251 to-252 (suffix o-1o) (suffix ot4o ) 1 3 1/6
thermal data r thj-case r t hj- amb thermal resistance junction-case max thermal resistance junction-ambient max 6.25 100 o c/w o c/w electrical characteristics (t case =25 o c unless otherwise specified) symbol parameter test conditions min. typ. max. unit i cev collector cut-off current (v be =-1.5v) v ce = 1000 v v ce = 1000 v t j =125 o c 100 1 m a ma i ebo emitter cut-off current (i c =0) v eb =5v 1 ma v ceo(sus) collector-emitter sustaining voltage i c = 100 ma 450 v v beo collector-base sustaining voltage i c =10ma 5 v v ce(sat) * collector-emitter saturation voltage i c =0.1a i b =0.01a i c =0.2a i b =0.02a 0.8 1 v v v be(s at) * base-emitter saturation voltage i c =0.2a i b =0.02a 1 v h fe * dc current gain i c =50ma v ce =5v i c =40ma v ce =5v 12 50 f t transition frequency i c =50ma v ce =10v f=1mhz 20 mhz t s t f resistive load storage time fall time v cc = 250 v i c =200ma i b1 =40ma i b2 =-80ma t p =20 m s 4.5 0.5 m s m s * pulsed: pulse duration = 300 m s, duty cycle 1.5 % safe operating area derating curves buxd87 2/6
dc current gain collector emitter saturation voltage reverse biased soa dc current gain base emitter saturation voltage buxd87 3/6
dim. mm inch min. typ. max. min. typ. max. a 2.20 2.40 0.087 0.094 a1 0.90 1.10 0.035 0.043 a3 0.70 1.30 0.028 0.051 b 0.64 0.90 0.025 0.035 b2 5.20 5.40 0.204 0.213 b3 0.85 0.033 b5 0.30 0.012 b6 0.95 0.037 c 0.45 0.60 0.018 0.024 c2 0.48 0.60 0.019 0.024 d 6.00 6.20 0.237 0.244 e 6.40 6.60 0.252 0.260 g 4.40 4.60 0.173 0.181 h 15.90 16.30 0.626 0.642 l 9.00 9.40 0.354 0.370 l1 0.80 1.20 0.031 0.047 l2 0.80 1.00 0.031 0.039 v1 10 o 10 o p032n_e to-251 (ipak) mechanical data buxd87 4/6
dim. mm inch min. typ. max. min. typ. max. a 2.20 2.40 0.087 0.094 a1 0.90 1.10 0.035 0.043 a2 0.03 0.23 0.001 0.009 b 0.64 0.90 0.025 0.035 b2 5.20 5.40 0.204 0.213 c 0.45 0.60 0.018 0.024 c2 0.48 0.60 0.019 0.024 d 6.00 6.20 0.236 0.244 e 6.40 6.60 0.252 0.260 g 4.40 4.60 0.173 0.181 h 9.35 10.10 0.368 0.398 l2 0.8 0.031 l4 0.60 1.00 0.024 0.039 v2 0 o 8 o 0 o 0 o p032p_b to-252 (dpak) mechanical data buxd87 5/6
information furnished is believed to be accurate and reliable. however, stmicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of stmicroelectronics. specification mentioned in this publication are subject to change without notice. this publication supersedes and replaces all information previously supplied. stmicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of stmicroelectronics. the st logo is a trademark of stmicroelectronics ? 1999 stmicroelectronics printed in italy all rights reserved stmicroelectronics group of companies australia - brazil - canada - china - france - germany - italy - japan - korea - malaysia - malta - mexico - morocco - the netherlands - singapore - spain - sweden - switzerland - taiwan - thailand - united kingdom - u.s.a. http://www.st.com . buxd87 6/6
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