ds12011 rev. 9 - 2 1 of 2 MMBD4448 www.diodes.com diodes incorporated case: sot-23, molded plastic case material - ul flammability rating classification 94v-0 moisture sensitivity: level 1 per j-std-020a terminals: solderable per mil-std-202, method 208 polarity: see diagram marking: ka3 (see page 2) weight: 0.008 grams (approx.) mechanical data a e j l top view m b c h g d k features characteristic symbol MMBD4448 unit non-repetitive peak reverse voltage v rm 100 v peak repetitive reverse voltage working peak reverse voltage dc blocking voltage v rrm v rwm v r 75 v rms reverse voltage v r(rms) 53 v forward continuous current (note 1) i fm 500 ma average rectified output current (note 1) i o 250 ma non-repetitive peak forward surge current @ t = 1.0 s @ t = 1.0s i fsm 4.0 2.0 a power dissipation (note 1) p d 350 mw thermal resistance junction to ambient air (note 1) r ja 357 c/w operating and storage temperature range t j ,t stg -65 to +150 c maximum ratings @ t a = 25 c unless otherwise specified notes: 1. part mounted on fr-4 board with recommended pad layout, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf. 2. short duration test pulse used to minimize self-heating effect. characteristic symbol min max unit test condition reverse breakdown voltage (note 2) v (br)r 75 v i r = 2.5 a forward voltage (note 2) v f 0.62 0.72 0.855 1.0 1.25 v i f = 5.0ma i f = 10ma i f = 100ma i f = 150ma reverse current (note 2) i r 2.5 50 30 25 a a a na v r = 75v v r = 75v, t j = 150 c v r = 25v, t j = 150 c v r = 20v total capacitance c t 4.0 pf v r = 0, f = 1.0mhz reverse recovery time t rr 4.0 ns i f = i r = 10ma, i rr = 0.1 x i r ,r l = 100 electrical characteristics @ t a = 25 c unless otherwise specified fast switching speed surface mount package ideally suited for automatic insertion for general purpose switching applications high conductance sot-23 dim min max a 0.37 0.51 b 1.20 1.40 c 2.30 2.50 d 0.89 1.03 e 0.45 0.60 g 1.78 2.05 h 2.80 3.00 j 0.013 0.10 k 0.903 1.10 l 0.45 0.61 m 0.085 0.180 0 8 all dimensions in mm MMBD4448 surface mount switching diode
ds12011 rev. 9 - 2 2 of 2 MMBD4448 www.diodes.com 0.1 1 10 100 1000 10000 0 20 40 60 80 100 v , reverse voltage (v) r fi g .2 t y pical reverse characteristics i , instantaneous reverse current (na) r t = -40oc a t = 25oc a t = 75oc a t = 125oc a t = 0oc a 10 100 1000 1 0.1 0 1.6 1.2 0.4 0.8 i , instantane o us f o rward current (ma) f v , instantaneous forward voltage (v) f fig. 1 typical forward characteristics t = 125oc a t = -40oc a t = 75oc a t = 25oc a t = 0oc a month jan feb march apr may jun jul aug sep oct nov dec code 1234567 89 o nd ka3 = product type marking code ym = date code marking y = year ex: n = 2002 m = month ex: 9 = september ka3 ym marking information notes: 3. for packaging details, go to our website at http://www.diodes.com/datasheets/ap02007.pdf. device packaging shipping MMBD4448-7 sot-23 3000/tape & reel ordering information date code key (note 3) 0 0.5 1 2.5 2 1.5 3 010 20 40 30 50 c , total capacitance (pf) t v , reverse voltage (v) r fi g .3 t y pical capacitance vs. reverse volta g e f = 1mhz year 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 code klmnpr st u vw 0 100 100 200 p,p o wer dissipati o n (mw) d t , ambient temperature (c) a fig. 4, max power dissipation vs ambient temperature 200 300 500 0 400
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