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savantic semiconductor product specification silicon npn power transistors 2SC4940 d escription with ito-220 package switching power transistor pinning pin description 1 base 2 collector 3 emitter absolute maximum ratings(ta=25 ) symbol parameter conditions value unit v cbo collector-base voltage open emitter 1200 v v ceo collector-emitter voltage open base 550 v v ebo emitter-base voltage open collector 7 v i c collector current 4 a i cm collector current-peak 8 a i b base current 2 a i bm base current-peak 4 a p t total power dissipation t c =25 30 w t j junction temperature 150 t stg storage temperature -55~150 thermal characteristics symbol parameter max unit r th j-c thermal resistance junction case 4.16 /w fig.1 simplified outline (ito-220) and symbol
savantic semiconductor product specification 2 silicon npn power transistors 2SC4940 c haracteristics tj=25 unless otherwise specified symbol parameter conditions min typ. max unit v ceo(sus) collector-emitter sustaining voltage i c =0.1a ;i b =0 550 v v cesat collector-emitter saturation voltage i c =2a; i b =0.4a 1.0 v v besat base-emitter saturation voltage i c =2a; i b =0.4a 1.5 v i cbo collector cut-off current i ceo collector cut-off current at rated volatge 0.1 ma i ebo emitter cut-off current at rated volatge 0.1 ma h fe-1 dc current gain i c =2a ; v ce =5v 10 h fe-2 dc current gain i c =1ma ; v ce =5v 10 f t transition frequency i c =0.4a ; v ce =10v 10 mhz switching times t on turn-on time 0.8 s t s storage time 3.0 s t f fall time i c =2a;i b1 =0.4a i b2 =0.8a ,r l =75 c v bb2 =4v 0.3 s
savantic semiconductor product specification 3 silicon npn power transistors 2SC4940 package outline fig.2 outline dimensions (unindicated tolerance:0.20 mm)

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