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10 100 1000 2SC4981 0.001 0.01 0.1 1 10 0.05 0.5 0.2 20 50 5 2 200 500 2000 5000 v ce = 2v 0.02 0.05 0.5 0.2 20 5 2 0.005 0.002 tc = 150 c 100 c 50 c 25 c 0 c - 25 c - 55 c h fe - i c 14 collector current i c [a] dc current gain h fe
0 0.5 1 1.5 2 2.5 3 2SC4981 0.01 0.1 1 0 0.5 1 1.5 2 2.5 3 i c = 1a 2a 5a 7a 10a 14a tc = 25 c saturation voltage 3.5a i c = 1a 2a 5a 7a 10a 14a 3.5a 2 base current i b [a] collector-emitter voltage v ce [v] base-emitter voltage v be [v]
0.01 0.1 1 0 1 2 3 4 5 6 7 2SC4981 i b1 = 0.1i c i b2 = 0.1i c v bb2 = 4v v cc = 28v tc = 25 c t s t on t f switching time - i c collector current i c [a] switching time t sw [ m s]
0.01 0.1 1 0 50 100 150 2SC4981 i c = 3.5a i b1 = 0.35a i b2 = 0.35a v bb2 = 4v r l = 8 w t s t on t f switching time - tc case temperature tc [ c] switching time t sw [ m s]
transient thermal impedance 0.01 0.1 1 10 2SC4981 10 -5 10 -4 10 -3 10 -2 10 -1 10 0 10 1 0.05 0.5 0.2 20 50 5 2 200 500 2000 5000 0.02 0.05 0.5 0.2 20 5 2 0.005 0.002 time t [s] transient thermal impedance q jc(t) [ c/w]
forward bias soa 0.01 0.1 1 10 1 10 2SC4981 tc = 25 c single pulse 100 m s 1ms 10ms dc 14 80 collector-emitter voltage v ce [v] collector current i c [a] p t limit i s/b limit
0 20 40 60 80 100 0 50 100 150 2SC4981 collector current derating collector current derating [%] v ce = fixed p t limit i s/b limit case temperature tc [ c]

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