http://www .weitron.com.tw weitron wsd520s/521s small signal schottky diodes 200m amperes 30 v ol ts *ex tr mely high s wit ching s p eed . *l o w f or w ar d v oltage and l o w r e v erse c ur r en t. *high r eliabilit y . *schottk y b ar r ier d io des enc apsula t ed in a sod-523 p ack age description: featur e: t hese schottk y bar r ier dio des ar e designed f or high sp eed swit ching applic a tions cir cuit pr ot ec tion, and v oltage clamping , ex tr emely lo w f or w ar d v oltage r educ es c onduc tion loss , m inia tur e sur fac e moun t pack age is e x c ellen t f or hand held and p or table applic a tions wher e spac e is limit ed . surface mount schottky barrie r diodes sod-523 outline dimensions unit:mm 1/4 sod-523 lead(pb) - f r ee p b 1 2 rev.c 15-jan-07 a d e b p v m a scale 0.5 1mm 0 a c h e outli n e versi o n referenc e s europe a n projecti o n dimensio n s ( m m a r e t h e origin a l dimension s ) a b p c d e h e v 0 . 7 0. 3 5 0 . 2 1 . 3 0 . 9 1 . 7 0. 1 5 0 . 5 0. 2 5 0 . 1 1 . 1 0 . 7 1 . 5 iss u e d a t e i e c jed e c ei a j sc- 7 9 98 - 1 1- 2 5 note1. the marking bar indicates the cathode. sod-5 23 mm max min un it
m a x i m u m r a t i n g s (t a =25c unless otherwise noted) 30 200 1.0 v a c d e v i c e m a r k i n g 2 1 c e l e c t r i c a l c h a r a c t e r i s t i c s (t a =25c unless otherwise noted) 30 - - - v v b 125 c w e i t r o n h t t p : / / w w w . w e i t r o n . c o m . t w 2/4 rev.d 01-oct-08 wsd520s/521s wsd520s wsd521s wsd520s wsd521s wsd520s wsd521s item marking eqivalent circuitdiagram average recti?er forward current reverse voltage operating junction temperature range storage temperature range peak forward surge current (1) reverse breakdown voltage i r = 100a characteristic characteristic symbol min max unit symbol unit a ma forward voltage i f = 200ma reverse leakage v r = 10v 0.60 0.50 1.0 30 v (br)r v f i r note: 1. 60hz for 1 -40 to +125 value v r i f(av) i fsm t j t stg
w e i t r o n h t t p : / / w w w . w e i t r o n . c o m . t w 3/4 rev.c 15-jan-07 wsd520s/521s wsd520s wsd520s wsd520s wsd520s 1 10 100 1m 10m 100m 1 i : t n e r r u c d r a w r o f f ) a ( forward voltage : v f (v) 0 0. 1 0. 2 0. 3 0. 4 0. 5 0.7 0.6 5 2 1 = a t o c 5 7 o c 5 2 o c 5 2 - o c fig. 1 forward characteristics 1n 10n 100n 1 10 100 1m : t n e r r u c e s r e v e r i r ) a ( reverse voltage: v r (v) 0 1 0 20 30 ta=125 o c 75 o c 25 o c -25 o c fig. 2 reverse characteristics 0 1 0 2 0 30 1 10 100 reverse voltage : v r (v) c : s l a n i m r e t n e e w t e b e c n a t i c a p a c t ) f p ( fig. 3 capacitance between terminals characteristics f= 1mhz 0 0 20 40 60 80 100 2 5 5 0 7 5 10 0 125 ) % ( t n e r r u c o i ambient temperature : ta ( o c) fig 4. derating curve (mounting on glass epoxy pcbs) electrical characteristic curves(ta=25oc)
w e i t r o n h t t p : / / w w w . w e i t r o n . c o m . t w 4/4 rev.c 15-jan-07 0 2 4 6 8 1 0 1 2 14 1 2 5 10 20 50 100 f=1mhz ta=25 o c reverse voltage : v r (v) c : s l a n i m r e t n e e w t e b e c n a t i c a p a c t ) f p ( fig. 3 capacitance between terminals characteristics 0 0 20 40 60 80 100 2 5 5 0 7 5 10 0 125 ) % ( t n e r r u c o i ambient temperature : ta( o c) fig. 4 derating curve (mounting on glass epoxy pcbs) 1 10 100 1m 10m 100m 1 i : t n e r r u c d r a w r o f f ) a ( 0 0. 1 0. 2 0. 3 0. 4 0. 5 0.6 5 o c 2 1 = a t c o c 5 7 c 5 o c 2 c 5 o c 2 - fig. 1 forward characteristics forward voltage:v f (v) 10n 100n 1 10 100 1m 10m i : t n e r r u c e s r e v e r r ) a ( 0 1 0 20 t a =125 o c 75 o c 25 o c -25 o c fig. 2 reverse characteristics reverse voltage:v r (v) wsd520s/521s wsd521s wsd521s wsd521s wsd521s electrical characteristic curves(ta=25oc)
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