ds30095 rev. 5 - 2 1 of 3 MMBD4448W www.diodes.com diodes incorporated MMBD4448W surface mount fast switching diode features characteristic symbol value 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 200 mw thermal resistance junction to ambient air (note 1) r ja 625 c/w operating and storage temperature range t j ,t stg -65 to +150 c maximum ratings @ t a = 25 c unless otherwise specified characteristic symbol min max unit test condition reverse breakdown voltage (note 2) v (br)r 75 i r = 10 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 case: sot-323, 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 3) weight: 0.006 grams (approx.) mechanical data a m j l f d b c h k g b e c top view fast switching speed ultra-small surface mount package for general purpose switching applications high conductance notes: 1. device mounted on fr-4 pcb, 1 inch x 0.85 inch x 0.062 inch; pad layout as shown on diodes inc. suggested pad layout document ap02001, 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. sot-323 dim min max a 0.25 0.40 b 1.15 1.35 c 2.00 2.20 d 0.65 nominal e 0.30 0.40 g 1.20 1.40 h 1.80 2.20 j 0.0 0.10 k 0.90 1.00 l 0.25 0.40 m 0.10 0.18 0 8 all dimensions in mm
ds30095 rev. 5 - 2 2 of 3 MMBD4448W www.diodes.com 0.1 1 10 100 1000 10000 0 20 40 60 80 100 v , reverse voltage (v) r fig. 2 typical reverse characteristics i , instantane o us 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 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 0 50 100 150 200 250 0 100 200 p,p o wer dissipati o n (mw) d t , ambient temperature ( c) a fig. 4 power derating curve, total package
ds30095 rev. 5 - 2 3 of 3 MMBD4448W www.diodes.com month jan feb march apr may jun jul aug sep oct nov dec code 12345 67 89 o nd year 2002 2003 2004 2005 2006 2007 2008 2009 code nprst uvw date code key ka3 = product type marking code ym = date code marking y = year ex: n = 2002 m = month ex: 9 = september ka3 ym marking information (note 3) ordering information device packaging shipping MMBD4448W-7 sot-323 3000/tape & reel notes: 3. for packaging details, go to our website at http://www.diodes.com/datasheets/ap02007.pdf.
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