page . 1 stad-apr.27.2009 sd820yt~sd860yt features ? plastic package has underwriters laboratory flammability classification 94v-o for surface mounted applications low profile package built-in strain relief low power loss, high efficiency high surge capacity for use in low voltage high frequency inverters, free wheeling, and polarity protection applications in compliance with eu rohs 2002/95/ec directives surface mount schottky barrier rectifiers .098(2.5) .032(0.8) .264(6.7) .09 .09 .216(5.5) .024(0.6) .071(1.8) .02(0.5) .225(5.7) .307(7.8) .063(1.6) .082(2.1) .012(0.3) .248(6.3) (2.3) (2.3) .200(5.1) .016(0.4) .051(1.3) .209(5.3) .283(7.2) .047(1.2) to-251ab unit:inch(mm) voltage 20 to 60 volts current 8 amperes mechanical data case: to-251ab molded plastic terminals: solder plated, solderable per mil-std-750,method 2026 polarity: as marking standard packaging: 16mm tape (eia-481) weight: 0.0104 ounces, 0.297 grams. maximum ratings and electrical characteristics ratings at 25c ambient temperature unless otherwise specified. single phase, half wave, 60 hz, resistive or inductive load. for capacitive load, derate current by 20% r e t e m a r a pl o b m y st y 0 2 8 d st y 0 3 8 d st y 0 4 8 d st y 0 5 8 d st y 0 6 8 d ss t i n u e g a t l o v e s r e v e r k a e p t n e r r u c e r m u m i x a mv m r r 0 20 30 40 50 6v e g a t l o v s m r m u m i x a mv s m r 4 11 28 25 32 4v e g a t l o v g n i k c o l b c d m u m i x a mv c d 0 20 30 40 50 6v t t a t n e r r u c d r a w r o f e g a r e v a m u m i x a m c 5 7 = o ci ( f) v a 8a - e n i s f l a h e l g n i s s m 3 . 8 : t n e r r u c e g r u s d r a w r o f k a e p ) d o h t e m c e d e j ( d a o l d e t a r n o d e s o p m i r e p u s e v a w i m s f 5 8a ) 1 e t o n ( a 0 . 4 t a e g a t l o v d r a w r o f m u m i x a mv f 5 5 . 05 7 . 0v t t n e r r u c e s r e v e r c d m u m i x a m j 5 2 = o c t e g a t l o v g n i k c o l b c d d e t a r t a j 0 0 1 = o c i r 2 . 0 0 2 1 . 0 0 2 a m c n a t s i s e r l a m r e h t l a c i p y te r c j r a j 0 . 5 0 8 o w / c e g n a r e r u t a r e p m e t n o i t c n u j g n i t a r e p ot j 5 2 1 + o t 5 5 -0 5 1 + o t 5 5 - o c e g n a r e r u t a r e p m e t e g a r o t st stg 0 5 1 + o t 5 5 - o c
page . 2 stad-apr.27.2009 sd820yt~sd860yt rating and characteristic curves average forward current amperes fig.1- forward current derating curve case temperature, c o 0 50 100 150 10 8 6 4 2 0 fig.4- typical instantaneous forward characteristics fig.2- maximum non - repetitive surge current peak forward surge current amperes no. of cycle at 60hz 120 100 80 60 40 20 0 1 2 5 10 20 50 100 fig.3- typical reverse characteristics instantaneous reverse current ,ma percent of instantaneous reverse voltage,(%) 020406080100 10 1.0 0.1 0.01 .001 t=100c o t=75c o t=25c j j j o v =20-40v v =50-60v rrm rrm instantaneous forward current amperes instantaneous forward voltage ,volts .3 .4 .5 .6 .7 .8 0.9 1.0 40 10 8 6 4 2 1.0 .8 .6 .4 .2 .1 t=25c pulse width = 300 s 1% duty cycle j o m 20v~45v 50~60v
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