features l the three layer, two terminal, axial lead, hermetically sealed diacs are designed specifically for triggering thyristors. l these diacs are intended for use in thyrisitors phase control , circuits for lamp dimming, universal motor speed control ,and heat control. electrical characteristics @ 25 o c unless otherwise specified db3/dc34 and DB4 silicon bidirectional diac power dissipation on printed circuit(l=10mm) p c 150mw t a =65 o c repetitive peak on-state current db3,dc34,DB4 i trm 2.0a breakover voltage symmetry db3, dc34, DB4 |+v bo | -|-v bo | 3v c=22nf(note 3) voltage(note 2) v o(min) 5v breakover current(note 2) i bo(max) 100ua c=22nf rise time(note 2) t r 1.5us leakage current(note 2) i b(max) 10ua v b =0.5v bo(max) do-35g inches mm dim min max min max note a --- .150 --- 3.8 b --- .079 --- 2.00 c --- .020 --- .52 d 1.083 --- 27.50 --- a b c d d dimensions
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% !"# mcc revision: b 2011/06/20 tm micro commercial components www. mccsemi .com 1 of 3 type number is marked. ? lead free finish/rohs compliant (note1) ("p"suffix designates compliant. see ordering information) ? moisture sensitivity: level 1 2 . electrical characteristics applicable in both forward and note: 1. lead in glass exemption applied, see eu directive annex 5. reverse directions. 3. connected in parallel with the devices. tp=10us, f=100hz breakover voltage db3 dc34 DB4 v bo min typ max 28 32 36v 30 34 38v 35 40 45v c=22nf(note 3) output dynamic breakover voltage v vbo and vf at10ma (note 2) 5v(min.) l operating temperature: -40 o c to +125 o c l storage temperature: -40 o c to +125 o c l thermal resistance junction to lead:167 c/w l thermal resistance junction to ambient: 400 c/w maximum ratings o o
revision: b 2011/06/20 mcc tm micro commercial components www. mccsemi .com 2 of 3 typical performance characteristics diagram 1 : test circuit figure 1. admissible power dissipation curve figure 2. relative variation of vbo versus junction temperature figure 3. repetitive peak pulse current versus pulse duration (maximum values) v bo : break-over voltage i bo : break-over current ? v : dynamic breakover voltage i b : leakage current at v b =0.5*v bo v f : voltage at current i f =10ma ? v v bo 0.5v bo v f i f =10m i bo i b ambient tempeatature ( o c) 0 40 80 120 160 0 102030405060708090100110120130 power dissipation (mw) 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 25 50 75 100 125 v bo [tj] / v bo [tj=25c] tj(c) 0.1 1 10 100 1 10 100 tp ( s) repetitive peak pulse current (a)
m c c revision: b 2011/06 /20 tm micro commercial components www. mccsemi .com 3 of 3 1 device packing part number-tp tape&reel: 5kpcs/reel part number-ap ammo packing: 5kpcs/ammo box part number-bp bulk: 100 k p c s / c a r t o n ordering information : *** i m p o r t a n t n o t ic e * ** m i c r o c o m m e r c i a l c o m p on e n ts c o r p . r e s e rve s t h e r i g h t t o m a k e c h a n g e s w i t ho u t f u r t h e r no t i c e t o a n y p r o d u c t h e r e i n t o m a k e c o rr e c t i o n s , m o d i f i c a t i o n s , e n h a n c e m e n t s , i m pr o v e m e n t s , o r o t h e r ch a n g e s . m i c r o c o m m e r c i a l c o mp o n e n ts c o r p . d o e s n o t a s s u m e a n y l i a b i l i t y a r i s i n g ou t o f t h e a p p l i c a t i on o r u s e o f a n y p r o d uc t d e sc r i be d h e r e i n ; n e i t h e r d o e s i t c o n v e y a n y li c e n s e un der i t s p a t e n t r i g h t s , n o r t h e r i g h t s o f o t h e r s . t h e u s e r o f pr o d uc t s i n s u c h a p p l i c a t i o n s sh a l l a ss u m e a l l r i s k s o f su c h u s e a n d w ill a g r ee t o h o l d m i c r o c o mm er c i a l c o m p o n e n t s c o r p . a n d a ll t h e c o m p a n i e s w ho s e p r o d u c t s a r e r e p r e s e n t ed o n ou r w e b s i t e , h a r m l e s s a g a i n s t a l l d a m a g e s. * * * l i f e s u p p o r t *** m c c ' s pr o d uc t s a r e n o t a u t h o r iz ed f o r u s e a s c r i t i c a l c o m p o n e n t s i n l i f e s u pp o r t d e v i c e s o r s y s t e m s w i t h ou t t h e e x pre ss wr i tt e n a p p r o v a l o f m i c r o c o mm e r c i a l c o m p o n e n t s c o rp o r a t i o n. * * * c u s t o m e r a w a r e n e ss*** c o un t e r f e i t i n g o f s e m i c o n d u c t o r p a r t s i s a gr o w i n g p r o b l e m i n t h e i n d u s t ry . m i c r o c o mm e r c i a l c o m p o n e n t s ( m cc ) i s t a k i n g s t r o n g m e a su r e s t o p r o t e c t ou r s e l v e s a n d o u r cu s t o m e r s f r o m t h e pr o l i f e r a t i on o f c o u n t e r f e i t p a r t s . m c c s t r o n g l y e nc o u r a g e s c u s t o m e r s t o p u r c h a s e m c c p a r t s e i t h e r d i r e c t l y f r o m m c c o r f r o m a u t ho r i z e d m c c d i s t r i b u t o r s w ho a r e l i s t e d b y c o u n t r y o n o u r w e b p a g e c i t ed below . p r o d uc t s c us t o m e r s b u y e i t h e r f r o m m c c d i r e c t l y o r f r o m a u t ho r i z e d m cc d i s t r i b u t o r s a r e g e n u i n e p a r t s , h a v e f ul l t r a c e a b il i t y , m e e t m c c ' s q u a l i t y s t a n d a r d s f o r h a n d li n g a n d s t o r a g e . m c c wi l l n o t p r o v i d e a n y w a rr a n ty c o v e r a g e o r o t h e r a s s i s t a n c e f o r p a r ts b o u g h t f r o m u n a u t h o r i z e d s o u r c e s. m c c i s c o m m i t t e d t o c o m b a t t h i s g l o b a l pr o b l e m a n d e n c ou r a g e o u r c u s t o m e r s t o d o t h e i r p a r t in s t o p p i n g t h i s p r a c t i c e b y b u y i n g d i r e c t o r f r o m a u t h o r i z ed d i s t r i b u t o r s.
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