cdst -4448-g features - fast switching diode. - surface mount package ideally suited for automatic insertion. - for general purpose switching applications. - high conductance. mechanical data - case: sot -23 - t erminals: solder plated, solderable per mil- std-750, method 2026. - w eight: 0.008 grams . (approx.) page 1 qw -b0022 smd switching diode high speed rohs device maximum rating (at t a=25c unless otherwise noted) rev :b ma v v -65 ~ +150 357 250 t stg r ja v rm v rrm v rwm v r i o power dissipation thermal resistance-junction to ambient air peak repetitive peak reverse voltage w orking peak reverse voltage dc blocking voltage non-repetitive peak reverse voltage parameter symbol limits unit v r(rms) a verage rectified output current storage temperature range p d 350 mw + - 75 100 c c/w electrical characteristics (at t a=25c unless otherwise noted) ns a na v 4 2.5 25 i r1 i r2 t rr capacitance between terminals reverse recovery time forward voltage parameter symbol min max unit reverse current t est conditions 0.62 v f1 v f2 v f3 v f4 rms reverse voltage forward continuous current peak forward surge current @1 s 1.0s @ i fm i fsm 53 500 4.0 2.0 v ma a c t i f1 =5ma i f2 =10ma i f3 =100ma i f4 =150ma 0.72 0.855 1.0 1.25 v r1 =75v v r2 =20v v r =0v , f=1mhz i f =i r =10ma, irr=0.1xi r , r l =100 4 pf company reserves the right to improve product design , functions and reliability without notice. sot -23 dimensions in inches and (millimeters) 0.066 (1.70) 1 2 3 0.1 19 (3.00) 0.1 10 (2.80) 0.103 (2.60) 0.086 (2.20) 0.020 (0.50) 0.012 (0.30) 0.056 (1.40) 0.047 (1.20) 0.041 (1.05) 0.035 (0.90) 0.083 (2.10) 0.007 (0.20) min 0.006 (0.15) max 0.006 (0.15) 0.003 (0.08) 1 2 3
characteristic curves (cdst -4448-g) page 2 smd switching diode qw -b0022 fig.1 - forward characteristics rev :b 0.01 0.1 1 10 100 1000 0 1 2 f o r w a r d c u r r e n t , ( m a ) instananeous forward v oltage, (v) fig.2 - leakage current vs junction t emperature 1 10 100 1000 10000 0 l e a k a g e c u r r e n t , ( n a ) junction t emperature, (c) 100 200 o t j =25 c v r =20v company reserves the right to improve product design , functions and reliability without notice.
page 3 smd switching diode qw -b0022 rev :b reel t aping specification xxx b c d d d 2 d 1 s o t - 2 3 s y m b o l a ( m m ) ( i n c h ) 2 . 1 4 2 0 . 0 3 9 4 . 0 0 0 . 1 0 1 . 5 0 + 0 . 1 0 5 4 . 4 0 1 . 0 0 1 3 . 0 0 1 . 0 0 4 . 0 0 0 . 1 0 2 . 0 0 0 . 1 0 1 7 8 2 . 0 0 0 . 0 5 9 0 . 0 0 4 + 7 . 0 0 8 0 . 0 7 9 0 . 5 1 2 0 . 0 3 9 s y m b o l ( m m ) ( i n c h ) 0 . 0 . 0 0 4 1 5 7 0 . 1 5 7 0 . 0 0 4 0 . 0 7 9 0 . 0 0 4 e f p p 0 p 1 w w 1 1 . 7 5 0 . 1 0 0 . 0 6 9 0 . 0 0 4 3 . 5 0 0 . 1 0 0 . 1 3 8 0 . 0 0 4 s o t - 2 3 3 . 1 5 0 . 1 0 0 . 1 2 4 0 . 0 0 4 2 . 7 7 0 . 1 0 0 . 1 0 9 0 . 0 0 4 1 . 2 2 0 . 1 0 0 . 0 4 8 0 . 0 0 4 1 2 . 3 0 1 . 0 0 . 4 8 4 0 . 0 3 9 8 . 0 0 0 . 3 0 / + C 0 . 1 0 0 . 3 1 5 0 . 0 1 2 / + C 0 . 0 0 4 d f e b p 1 p 0 o 1 2 0 d 1 d 2 d w 1 company reserves the right to improve product design , functions and reliability without notice.
page 4 smd switching diode qw -b0022 rev :b part number cdst -4448-g marking code ka3 marking code xxx 3 1 2 suggested p ad layout xx = product type marking code standard packaging c a s e t y p e s o t - 2 3 3 , 0 0 0 r e e l ( p c s ) reel size (inch) 7 r e e l p a c k a c b d e size (inch) 0.031 (mm) 0.80 1.90 2.02 0.075 0.080 sot -23 2.82 0.1 1 1 a b c d 0.80 0.031 e
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