s m a l l s i g n a l s w i t c h i n g d i o d e s reverse v oltage: 75 v olts forward current: 150 ma rohs device page 1 rev :d features -design for mounting on small surface. -high speed switching. -high mounting capability , strong surge withstand, high reliability . mechanical data -case: sot -23, molded plastic. -t erminals: solderable per mil-std-750, method 2026. -approx. weight: 0.0078 grams circuit diagram cdst -4148-g maximum ratings and electrical characteristics, single diode (at t a=25c unless otherwise noted) qw -b0001 comchip t echnology co., l td. peak repetitive peak reverse voltage units symbol parameter v rrm i o 1 2 3 conditions t=1.0 s v ma d i m e n s i o n s i n i n c h e s a n d ( m i l l i m e t e r ) s o t - 2 3 3 1 2 0.1 18(3.00) 0.1 10(2.80) 0.055(1.40) 0.047(1.20) 0.079(2.00) 0.071(1.80) 0.041(1.05) 0.035(0.90) 0.020(0.50) 0.012(0.30) 0.006(0.15) 0.003(0.08) 0.100(2.55) 0.089(2.25) 0.004(0.10) max 0.012(0.30) v dc peak forward surge current a i fsm dc blocking voltage 75 a verage forward current 150 2.0 forward voltage v f @i f =1ma @i f =10ma @i f =50ma @i f =150ma 0.715 0.855 1.0 1.25 v reverse current i r 2.5 na @v r =20v @v r =75v reverse recovery time capacitance between terminals junction temperature storage temperature t rr c t t j t stg v r =0v , f=1.0mhz 4 2 +150 ns pf c c p d mw power dissipation 350 reverse breakdown voltage v (br)r 75 v i r =100a v 25 +150 0.020(0.50) i f =i r =10ma, 1 rr =0.1*i r r l =100 rms reverse voltage v rms v 53 75 t=1.0 s 1.0 ma i fm forward continous current 300 min. t yp. max. -65 r ja c/w thermal resistance junction to ambient 357 a
qw -b0001 ra ting and characteristic cur ves (cdst -4148-g) forward v oltage, (v) 1.5 1.0 0.5 0 fig.1 - forward characteristics 1 10 100 1000 reverse v oltage, (v) 0 fig.3 - reverse characteristics 0.1n r e v e r s e c u r r e n t , ( a ) 1n 10n 100n 10 40 reverse v oltage, (v) 0 fig.4 - capacitance between t erminals characteristics 0 t o t a l c a p a c i t a n c e , ( p f ) 1 2 30 50 ambient t emperature, (c) fig.2 - power derating curve 0 p o w e r d i s s i p a t i o n , ( m w ) 200 400 comchip t echnology co., l td. page 2 rev :d 60 100 0 100 175 20 80 100 10 25 50 75 150 125 300 1 40 20 mounted on glass epoxy pcbs s m a l l s i g n a l s w i t c h i n g d i o d e s t a =150c t a =-40c t a =25c t a =75c t a =125c t a =-40c t a =25c t a =75c t j =25c f=1.0mhz t a =0c t a =150c t a =0c instantaneous forward v oltage, (v) 0 fig.5 - forward characteristics 0.01 i n s t a n t a n e o u s f o r w a r d c u r r e n t , ( m a ) 0.1 1.0 10 1000 1 2 100 junction t emperature, (c) 0 1 l e a k a g e c u r r e n t , ( n a ) 10 100 10000 100 200 1000 fig.6 - leakage current vs junction t emperature f o r w a r d c u r r e n t , ( m a )
qw -b0001 comchip t echnology co., l td. page 3 rev :d s m a l l s i g n a l s w i t c h i n g d i o d e s 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 1 6 4 . 0 0 0 . 1 0 1 . 5 0 + 0 . 1 0 5 4 . 4 0 0 . 4 0 1 3 . 0 0 0 . 2 0 4 . 0 0 0 . 1 0 2 . 0 0 0 . 1 0 1 7 8 1 . 0 0 0 . 0 5 9 0 . 0 0 4 + 7 . 0 0 8 0 . 0 3 9 0 . 5 1 2 0 . 0 0 8 s y m b o l ( m m ) ( i n c h ) 0 . 0 . 0 0 4 1 5 8 0 . 1 5 8 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 . 0 5 0 . 1 3 8 0 . 0 0 2 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 9 . 5 0 1 . 0 0 0 . 3 7 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 reel t aping specification o 1 2 0 t railer device leader 10 pitches (min) 10 pitches (min) ....... ....... ....... ....... ....... ....... ....... ....... end start d 1 d 2 d w 1 t c direction of feed i n d e x h o l e d e f b w p p 0 p 1 a
qw -b0001 comchip t echnology co., l td. page 4 rev :d s m a l l s i g n a l s w i t c h i n g d i o d e s marking code xxx 3 1 2 suggested p ad layout a c b 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 d xxx = product type marking code part number marking code cdst -4148-g k a2 c a s e t y p e s o d - 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 standard packaging
|
