voltage range 200 to 1000 volts fast recovery rectifiers current 1.0 ampere e-mail: sales@taychipst.com web site: www.taychipst.com 1 of 2 1N4942 thru 1n4948 f e a t u r e s m a x i m u m r a t i n g s a n d 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 r a t i n g s a t 2 5 o c a m b i e n t t e m p e r a t u r e u n l e s s o t h e r w i s e s p e c i f i e d . s i n g l e p h a s e , h a l f w a v e , 6 0 h z , r e s i s t i v e o r i n d u c t i v e l o a d . f o r c a p a c i t i v e l o a d , d e r a t e c u r r e n t b y 2 0 % . * p l a s t i c p a c k a g e h a s u n d e r w r i t e r s l a b o r a t o r y f l a m m a b i l i t y c l a s s i f i c a t i o n 9 4 v - 0 * h i g h s w i t c h i n g c a p a b i l i t y * l o w l e a k a g e * l o w f o r w a r d v o l t a g e d r o p * h i g h c u r r e n t c a p a b i l i t y * g l a s s p a s s i v a t e d j u n c t i o n * h i g h s u r g e c u r r e n t c a p a b i l i t y c a s e : j e d e c d o - 4 1 m o l d e d p l a s t i c t e r m i n a l s : p l a t e d a x i a l l e a d s , s o l d e r a b l e p e r m i l - s t d - 7 5 0 , m e t h o d 2 0 2 6 p o l a r i t y : c o l o r b a n d d e n o t e s c a t h o d e e n d m o u n t i n g p o s i t i o n : a n y w e i g h t : 0 . 3 5 g r a m m e c h a n i c a l d a t a electrical characteristics (at t a = 25 o c unless otherwise noted) maximum ra tings (at t a = 25 o c unless otherwise noted) notes : 1. t est conditions: i f = 0.5a, i r = -1.0a, i rr = -0.25a 2. measured at 1 mh z and applied reverse voltage of 4.0 volts ratings maximum recurrent peak reverse voltage maximum rms voltage maximum dc blocking voltage maximum average forward rectified current at t a = 75 o c peak forward surge current 8.3 ms single half sine-wave superimposed on rated load (jedec method) typical junction capacitance (note 2) operating and storage temperature range symbol v rrm v dc i o i fsm c j t j , t stg v rms volts volts volts amps 1.0 30 15 -55 to + 150 amps pf 0 c units 200 600 800 1000 400 140 420 560 700 280 200 600 800 1000 400 1N4942 1n4946 1n4947 1n4948 1n4944 at rated dc blocking voltage t a = 25 o c characteristics maximum full load reverse current full cycle average, .375 (9.5mm) lead length at t l = 55 o c maximum reverse recovery time (note 1) v f symbol i r trr 1.3 5.0 100 250 uamps uamps nsec maximum dc reverse current maximum instantaneous forward voltage at 1.0a dc volts 150 500 units 1N4942 1n4946 1n4947 1n4948 1n4944
fast recovery rectifiers e-mail: sales@taychipst.com web site: www.taychipst.com voltage range 200 to 1000 volts current 1.0 ampere 2 of 2 1N4942 thru 1n4948 rating and characteristic curves ( 1N4942 thru 1n4948 ) fig. 1 - typical forward current average forward current, (a) ambient temperature, ( ) derating curve 1.0 .8 .6 .4 .2 0 0 25 50 75 100 125 150 175 single phase half wave 60hz resistive or inductive load fig. 2 - maximum non-repetitive forward forward surge current, (a) number of cycles at 60hz surge current 1 2 0 4 6 8 10 20 40 60 80 100 50 40 30 20 10 0 8.3ms single half sine-wave (jeded method) fig. 2 - typical instantaneous forward characteristics instantaneous forward current, (a) instantaneous forward voltage, (v) t j = 25 pulse width=300us 1% duty cycle .4 .6 .8 1.0 1.2 1.4 1.6 10 1.0 .1 .01 fig. 4 - typical reverse characteristics instantaneous reverse current, (ua) percent of rated peak reverse voltage, (%) t j = 25 t j = 75 t j = 125 20 10 1.0 .1 .01 0 20 40 60 80 100 120 140 f i g . 5 - t y p i c a l j u n c t i o n c a p a c i t a n c e j u n c t i o n c a p a c i t a n c e , ( p f ) r e v e r s e v o l t a g e , ( v ) t j = 2 5 o c 2 0 0 1 0 0 6 0 4 0 2 0 1 0 6 4 2 1 . 1 . 2 . 4 1 . 0 2 4 1 0 2 0 4 0 1 0 0
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