ds30228 rev. 2 - 2 1 of 2 MMBD4448HW www.diodes.com diodes incorporated MMBD4448HW surface mount switching diode case: sot-323, molded plastic case material - ul flammability rating 94v-0 moisture sensitivity: level 1 per j-std-020a terminals: solderable per mil-std-202, method 208 polarity: see diagram marking: ka1 (see page 2) weight: 0.006 grams (approx.) mechanical data a m j l f d b c h k g 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 80 v rms reverse voltage v r(rms) 57 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 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. characteristic symbol min max unit test condition reverse breakdown voltage (note 2) v (br)r 80 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 peak reverse current (note 2) i r 100 50 30 25 na a a na v r = 70v v r = 75v, t j = 150 c v r = 25v, t j = 150 c v r = 20v total capacitance c t 3.5 pf v r = 6v, f = 1.0mhz reverse recovery time t rr 4.0 ns v r = 6v, i f = 5ma 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 t c u d o r p w e n 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 top view
ds30228 rev. 2 - 2 2 of 2 MMBD4448HW www.diodes.com 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 t c u d o r p w e n ordering information (note 3) device packaging shipping MMBD4448HW-7 sot-323 3000/tape & reel notes: 3. for packaging details, go to our website at http://www.diodes.com/datasheets/ap02007.pdf. marking information ka1 ym ka1= product type marking code ym = date code marking y = year ex: n = 2002 m = month ex: 9 = september date code key month jan feb march apr may jun jul aug sep oct nov dec code 1234567 89 o nd year 2001 2002 2003 2004 2005 2006 2007 2008 2009 code mnprst uvw 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 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 fig. 3 typical capacitance vs. reverse voltage f = 1mhz 0 50 100 150 200 250 0100200 p,p o wer dissipati o n (mw) d t , ambient temperature ( c) a fig. 4 power derating curve, total package
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