s m d ty p e w w w . k e x i n . c o m . c n 1 t r a n s i s t o r s np n t r an sist o r s 2s d1918 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 . l o w 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 . h i g h t r a n s i t i o n f r e q u e n c y c o m p l e m e n t a r y t o 2 s b 1 2 7 5 2 . 3 0 . 6 0 + 0 . 1 - 0 . 1 6 . 5 0 + 0 . 1 5 - 0 . 1 5 1 . 5 0 + 0 . 1 5 - 0 . 1 5 0 . 8 0 + 0 . 1 - 0 . 1 4 . 6 0 + 0 . 1 5 - 0 . 1 5 0 . 5 0 + 0 . 1 5 - 0 . 1 5 9 . 7 0 + 0 . 2 - 0 . 2 5 . 3 0 + 0 . 2 - 0 . 2 2 . 3 0 + 0 . 1 - 0 . 1 0 . 5 0 + 0 . 8 - 0 . 7 5 . 5 5 + 0 . 1 5 - 0 . 1 5 2 . 6 5 + 0 . 2 5 - 0 . 1 1 . 5 0 + 0 . 2 8 - 0 . 1 0 . 1 2 7 m a x 3 . 8 0 to-252 u n i t : m m 1 b a s e 2 c o l l ecto r 3 e m i t t e r 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 1 6 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 1 6 0 e m i t t e r - b a s e v o l t a g e v e b o 5 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 1 . 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 3 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 t c = 2 5 1 0 t a = 2 5 1 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 p c w 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 cl a s s i f i c a ti o n o f h f e ( 1 ) t y p e 2 s d 1 9 1 8 - q 2 s d 1 9 1 8 - r r a n g e 1 2 0 - 2 7 0 1 8 0 - 3 9 0 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 u a i e = 0 1 6 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 1 6 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 u a i c = 0 5 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 = 1 2 0 v , i e = 0 1 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 = 4 v , i c = 0 1 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 a , i b = 1 0 0 m a 2 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 a , i b = 1 0 0 m a 1 . 5 d c c u r r e n t g a i n h f e v c e = 5 v , i c = 1 0 0 m a 1 2 0 3 9 0 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 2 0 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 = - 1 0 0 m a , f = 1 m h z 8 0 m h z v u a v
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 np n t r an sist o r s 2s d1918 t y p i c a l ch a r a c te r i s i ti c s ta= 25 c 0 1 2 3 4 5 0 0.2 0.4 0.6 0.8 1.0 collector to emitter voltage : v ce (v) collector current : i c (a) f ig.1 ground emitter output characteristi cs 10ma 9ma 7ma 6ma 5ma 4ma 3ma 2ma i b = 1ma 8ma v ce =5v base to emitter voltage : v be (v) f ig.2 ground emitter propagation characteristi cs collector current : i c (a) 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 10 0.02 0.05 0.1 0.2 0.5 1 2 5 0.01 ta= 100 c ta= 25 c ta= ? 25 c ta= 25 c 0.01 0.02 0.05 0.1 0.2 0.5 1 2 5 10 1000 500 200 100 20 50 10 1 2 5 collector current : i c (a) dc current gain : h fe fig.3 dc current gain vs. collector current ( 1 ) v ce = 10v 5v v ce = 5v 0.01 0.02 0.05 0.1 0.2 0.5 1 2 5 10 1000 500 200 100 20 50 10 1 2 5 collector current : i c (a) dc current gain : h fe fig.4 dc current gain vs. collector current ( 2 ) ta= 100 c 25 c ? 25 c ta= 25 c 0.01 0.02 0.05 0.1 0.2 0.5 1 2 5 10 10 5 2 1 0.2 0.5 0.1 0.01 0.02 0.05 collector current : i c (a) collector saturation voltage : v ce(sat) (v) fig.5 collector-emitter saturation voltag e vs. collector current i c /i b = 20 10 i c /i b = 10 0.01 0.02 0.05 0.1 0.2 0.5 1 2 5 10 10 5 2 1 0.2 0.5 0.1 0.01 0.02 0.05 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 base-emitter saturation voltage vs. collector curre nt ta= ? 25 c 25 c ? 25 c v be(sat) v ce(sat) 100 c v ce = 5v ? 1 ? 2 ? 5 ? 10 ? 20 ? 50 ? 100 ? 200 ? 500 ? 1000 1000 500 200 100 20 50 10 1 2 5 emitter current : i e (ma) transition frequency : f t (mhz) fig.7 gain bandwidth products vs. emitter curre nt ta= 25 c f = 1mhz i e = 0a 0.1 0.2 0.5 1 2 5 10 20 50 10 0 1000 500 200 100 20 50 10 1 2 5 collector to base voltage : v cb (v) collector output capacitance : c ob (p f) fig.8 collector output capacitance vs. collector-base voltage ta= 25 c ta= 25 c 7single nonrepetitive pulse collector to emitter voltage : v ce (v) fig.9 safe operating area (2sd191 8) collector current : i c (a) 0.1 0.2 0.5 2 1 5 10 20 50 100 200 500 1000 10 5 2 1 200m 500m 100m 10m 2m 1m 5m 20m 50m ic max (pulse 7 ) dc pw=100ms7 pw=10ms 7
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