p o si t i v e t he r m a l c o ef f i ci e n t d e v ices (p t c), p r o v i d e o v e r- c u r r en t p r o t e c t i o n f o r el e c tr i c a l a nd e lec t r on i c de v ic e s . t he y f u n c t i o n u si n g c ond u c t i ng s tr i p s o f m e t al i m b edd e d i n si d e p o l y m e r s . u nde r no r m al c o ndi t io n s , t h e de v ic e s r e si s t a n c e i s n e a r z e r o , bu t o v e r - c u rr e n t c on d i t i on s w ill h ea t t he p t c a n d e x pand t h e pol y m e r , i n c r ea s in g t h e i m pe dan c e . w h e n c u rr e n t r e t u r n s t o no r m a l , t h e c o m p o nen t s c oo l do w n , r e t u r ni n g t o t hei r o r ig i n al s ha p e a n d v e r y lo w le v el s o f r e s i s t a n c e . l ov e r- c u rr en t an d o v e r-t e m p e r a t u r e p r o t e c t io n of au t o m o t i v e el e c tr o n i cs l h a r d d i sk d r i v e s l p oin t- o f- s a le (p o s) e q ui p m e nt l p c m ci a c a r d s l p o w e r o v e r et he r ne t (p o e ) l h d m i 1 . 4 s ou r c e p r o t e c t i on l c o m pu t e r s & pe r i phe r al s l i nd u s tr i a l c on tr ol l s e c u r i t y s y s t e m s l i( hold ) : 0 . 1 1 ~0 . 1 6 a l 600 v o pe r a t i n g v ol t a ge s l r adia l le a ded de v i c e s . l ov e r- c u rr en t p r o t e c t i o n l v e r y high v o l t a g e s u r ge c a p a b ili t ies . l a v aila b le i n l ead -f r ee v e r s ion . l fa s t t i me C to C tr i p l r o hs c o m pl i an t, le a d - f r e e a nd h al o gen - f r e e t es t c ond i t i on s res i sta n ce c h a ng e p a s s i v e ag i n g + 85 1000hr s 8 % t y p i c a l hu m i d i t y ag i n g + 85 85 % r . h . 1000hr s 8 % t y p i c a l t her m a l s ho ck + 125 t o -55 10 t i m e s 12 % t y p i c a l re s i s t an c e t o s o l v en t m i l- s t d-202 m e t hod 215 no c hang e v i bra t i o n m i l- s t d-202 m e t hod 201 no c hang e x x x - 0 6 m s l ogo ho l d c urrent 0 v o l t age ra t i ng (v dc ) part number code description features applications SM600 series positive thermal coefficient(ptc) environmental specifications
elec t r i ca l c h a r ac t e r i s t i c m od e l i h o ld a i t ( m a ) v max v m a x i m u m t i m e t o t r i p i max a p d t yp w res i sta n ce( ) c urr e n t ( a) t im e( s ) ri m in r1 max 0 . 1 1 0 . 22 600 1 8 3 1 . 5 6 . 0 30 . 0 0 . 15 0 . 30 600 1 9 3 1 . 5 5 . 0 22 . 0 0 . 16 0 . 32 600 1 10 3 1 . 5 4 . 0 18 . 0 i h = ho l d c urren t : m a x i m u m c urren t a t w h i c h t h e de v i c e w ill n o t t r i p a t 2 5 s t il l a i r. i t = t r i p c urren t : m i n i m u m c urren t a t w h i c h t h e de v i c e w ill na l w a y s a t 2 5 s t il l a i r. v m ax = m a x i m u m v o l t age de v i c e c a n w i t h st and w i t hou t d a m age a t ra t ed c urren t . i m ax = m a x i m u m f au l t c urren t de v i c e c an w i t h st and t i t ho u t d a m ag e a t ra t ed v o l t age . t t r ip = m a x i m u m t i m e t o t r i p( s ) a t a s s i gned c urren t . p d = t y p i c a l po w er d i s s i pa t i o n : t y p i c a l a m oun t o f po w er d i ss i pa t e d b y t he de c i c e w hen i n s t a t e a i r en v i ron m e n t . r i m in = m i n i m u m de v i c e r e s i st an c e a t 25 pr i or t o t r i pp i ng . r1 m ax = m a x i m u m de v i c e re s i s t an c e i s m e a s ured one hour p o st r e f l o w . s o l d e r r e f l o w c ond i t i ons w av e s o l d e r i n g s o l der i ng t e m pera t ure : 26 0 ~ 270 s o l der i ng t i m e: 3 s e c. s o l der i ng p o s i t i on : re s e t t ab l e f u s e w i re and t he bo tt o m 6 mm m a nu a l s o l d e r i ng s o l der i ng t e m pera t ure : 250 ~ 280 s o l der i ng t i m e: 3 s e c. s o l der i ng p o s i t i on : re s e t t ab l e f u s e w i re and t he bo tt o m 6 mm e n v i ronm e n t a l t e mp e r a t ur e a nd i h ,i t t i m e (s ) 30 0 25 0 20 0 15 0 10 0 5 0 0 t e mp e r a t u re 0 5 0 1 0 0 1 5 0 2 0 0 2 50 s o l d e r i ng 245 - 260 p re - h e a ti ng 100 - 130 c oo li ng 5 s ma x. -30 -20 -10 0 1 0 20 3 0 40 50 60 7 0 80 8 5 i t i h 300 250 200 150 100 50 0 SM600-110 SM600-150 SM600-160
p rodu c t d i m e n s i o n s f i g : 1 t y p e n u m b er d im e n s i ons mm d im e n s i ons in s h a pe a ( m ax) b( m ax) c( t y p) d( m ax) l ead ( t y p ) a ( m ax) b( m ax) c( t y p) d( m ax) l ead ( t y p ) f i g 14 . 0 14 . 0 5 . 1 6 . 0 0 . 6 0 . 551 0 . 551 0 . 201 0 . 236 0 . 024 1 14 . 5 14 . 5 5 . 1 6 . 5 0 . 8 0 . 571 0 . 571 0 . 201 0 . 256 0 . 031 1 14 . 5 14 . 5 5 . 1 6 . 5 0 . 8 0 . 571 0 . 571 0 . 201 0 . 256 0 . 031 1 pac k a g i n g par t n u m b e r qua n t i t y 500p cs/ ba g m a r k i n g SM600-110 SM600-150 SM600-160 SM600-110~sm60 0-160
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