s m d ty p e w w w . k e x i n . c o m . c n 1 t ra n s i s t o r s p np t r an sist o r s 2s a 1812 f e a tu r e s h i g h b r e a k d o w n v o l t a g e , b v c e o = - 4 0 0 v . h i g h s w i t c h i n g s p e e d , t y p i c a l l y t f : 1 u s a t i c = - 1 0 0 m a . h i g h - v o l t a g e s w i t c h i n g t r a n s i s t o r 1.base 2.collector 3.emitter 1.70 0.1 0.42 0.1 0.46 0.1 a b s o l u te m a x i m u m ra ti n g s t a = 2 5 p a r a m e t e r s y m b o l r a t i n g u n i t c o l l e c t o r - b a s e v o l t a g e v c b o - 4 0 0 c o l l e c t o r - e m i t t e r v o l t a g e v c e o - 4 0 0 e m i t t e r - b a s e v o l t a g e v e b o - 7 c o l l e c t o r c u r r e n t - c o n t i n u o u s i c - 0 . 5 c o l l e c t o r c u r r e n t - p u l s e i c p - 1 0 . 5 2 j u n c t i o n t e m p e r a t u r e t j 1 5 0 s t o r a g e t e m p e r a t u r e r a n g e t st g - 5 5 t o 1 5 0 v a c o l l e c t o r p o w e r d i s s i p a t i o n p c w n o t e . 1 : w h e n m o u n t e d o n a 4 0 x 4 0 x 0 . 7 m m c e r a m i c b o a r d . e l e c tr i c a l ch a r a c te r i s ti c s t a = 2 5 p a r a m e t e r s y m b o l t e s t c o n d i t i o n s m i n t y p m a x u n i t c o l l e c t o r - b a s e b r e a k d o w n v o l t a g e v c b o i c = - 1 0 0 a i e = 0 - 4 0 0 c o l l e c t o r - e m i t t e r b r e a k d o w n v o l t a g e v c e o i c = - 1 m a i b = 0 - 4 0 0 e m i t t e r - b a s e b r e a k d o w n v o l t a g e v e b o i e = - 1 0 0 a i c = 0 - 7 c o l l e c t o r - b a s e c u t - o f f c u r r e n t i c b o v c b = - 4 0 0 v , i e = 0 - 1 0 e m i t t e r c u t - o f f c u r r e n t i e b o v e b = - 6 v , i c = 0 - 1 0 c o l l e c t o r - e m i t t e r s a t u r a t i o n v o l t a g e v c e ( sa t ) i c = - 1 0 0 m a , i b = - 1 0 m a - 1 b a s e - e m i t t e r s a t u r a t i o n v o l t a g e v b e ( sa t ) i c = - 1 0 0 m a , i b = - 1 0 m a - 1 . 2 d c c u r r e n t g a i n h f e v c e = - 5 v , i c = - 5 0 m a 8 2 2 7 0 t u r n - o n t i m e t o n 0 . 6 s t o r a g e t i m e t st g 2 . 7 f a l l t i m e t f 1 c o l l e c t o r o u t p u t c a p a c i t a n c e c o b v c b = - 1 0 v , i e = 0 , f = 1 m h z 1 8 p f t r a n s i t i o n f r e q u e n c y f t v c e = - 5 v , i e = 5 0 m a , f = 5 m h z 1 2 m h z v v u a i c = -1 0 0 m a , r l = 1 . 5 k i b 1 = - i b 2 =- 1 0 m a v c c = 0 t o -150v u s m a r k i n g m a r k i n g a j *
s m d ty p e w w w . k exi n . co m . c n 2 t ra n s i s t o r s p np t r an sist o r s 2s a 1812 t y p i c a l ch a r a c te r i s i ti c s 0 -10 -6 -8 -4 - 0.1 - 0.2 - 0.3 - 0.4 - 0.5 -2 0 collector to emitter voltage : v ce (v) collector current : l c (a) fig.1 grouded emitter output characteristics -80ma -200ma 0 -2.0 -0.2 -0.4 -0.6 -0.8 -1.0 -1.2 -1.4 -1.6 -1.8 -0005 -0.001 -0.002 -0.005 -0.01 -0.02 -0.05 -0.1 -0.2 -0.5 -1 collector to emitter voltage : v be (v) collector current : l c (a) fig.2 grounded emitter propagation characteristics v ce = - 5v -0.001 -0.002 -0.01 -0.05 -1 -0.1 -0.2 -0.5 -0.02 -0.005 1 2 5 10 20 50 100 200 500 1000 collector current : i c (a) dc current gain : h fe fig.3 dc current gain vs. collector current ( ) ta = 25 c v ce = - 10v - 5v ta = 25 c l b = -20ma -40ma -60ma -100ma -120ma -140ma -160ma -180ma -25 c 25 c ta=100 c collector current : i c (a) collector saturation voltage : v ce (sat) (v) base saturation voltage : v be (sat) (v) fig.6 collector-emitter saturation voltage vs. collector current base-emitter saturation voltage vs. collector current l c /l b = 10 ta = 100 c ta = -25 c v ce(sat) v be(sat) 1 2 5 10 20 50 100 200 500 1000 collector current : i c (a) dc current gain : h fe fig.4 dc current gain vs. collector current ( ) v ce = - 5v ta = 100 c 25 c -25 c -0.01 -0.02 -0.05 -0.1 -0.2 -0.5 -1 -2 -5 -10 collector current : i c (a) collector saturation voltage : v ce (sat) (v) fig.5 collector-emitter saturation voltage vs. collector current ta = 25 c l c /l b = 50 20 10 25 c 25 c 100 c -25 c -1 -2 -5 -1 0 -20 -50 -10 0 -200 -500 -0.001 -0.002 -0.005 -0.01 -0.02 -0.05 -0.1 -0.2 -0.5 -1 -2 -5 -10 collector to emitter voltage : v ce (v) collector current : l c (a) fig.9 safe operating area (2sa1812) ta= 25c (when mounted on a 40 40 0.7mm ceramic board.) single nonrepetitive pulse p w = 10ms 100ms l c max. (pulse ) 0.0005 0.001 0.005 0.2 0.5 0.02 0.05 0.1 0.01 0.002 1 2 5 10 20 50 100 200 500 1000 collector current : i e (a) transition frequency : f t (mh z ) fig.7 transition frequency vs. emitter current ta = 25 c v ce = -5v -0.05 -50 -1 -2 -5 -10 -20 -0.5 -0.1 -0.2 1 2 5 10 20 50 100 200 500 1000 collector to base voltage: v cb (v) collector output capacitance : c ob (pf) fig.8 collector output capacitance vs. collector-base voltage ta = 25 c f = 1mh z l e = 0a -0.001 -0.002 -0.01 -0.05 -1 -0.1 -0.2 -0.5 -0.02 -0.005 -0.001 -0.002 -0.01 -0.05 -1 -0.1 -0.2 -0.5 -0.02 -0.005 -0.01 -0.02 -0.05 -0.1 -0.2 -0.5 -1 -2 -5 -10
s m d ty p e w w w . ke x in . com . c n 3 t ran s i st or s p np t r an sist o r s 2s a 1812 t y p i c a l ch a r a c te r i s i ti c s v in p w p w _ ~50 s duty cycle < = 1 l b1 l c r l =1.5k l b2 v cc _ ~ - 150v r g t.u.t + v bb i b i c t on t stg t f l c l b1 l b2 90% 10% 0.001 1000 1 10 100 0.1 0.01 0.1 1 10 100 1000 10000 100000 pulse width : p w (s) transient thermal resistance : r th ( c / w) fig.10 transient thermal resistance (2sa1812) (1) when mounted on a 40 40 0.7mm ceramic board (2) unmounted (2) (1) fig.11 switching characteristic measurement circuit
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