marking: s20 features characteristic symbol SDM40E20LS unit peak repetitive reverse voltage working peak reverse voltage dc blocking voltage v rrm v rwm v r 20 v rms reverse voltage v r(rms) 14 v forward continuous current (note 1) i fm 0.4 a non-repetitive peak forward surge current 8.3ms single half sine-wave superimposed on rated load (jedec method) i fsm 2a power dissipation (note 1) p d 225 mw typical thermal resistance junction to ambient (note 1) r ja 444 c/w power dissipation (note 2) p d 300 mw typical thermal resistance junction to ambient (note 2) r ja 333 c/w operating and storage temperature range t j, t stg -55 to +125 c a e j l top view m b c h g d k very low forward voltage drop guard ring construction for transient protection high conductance case: sot-23, plastic case material - ul flammability rating classification 94v-0 leads: solderable per mil-std-202, method 208 weight: 0.004 grams (approx.) mechanical data electrical characteristics @ t a = 25 c unless otherwise specified characteristic symbol min typ max unit test conditions reverse breakdown voltage (note 3) v (br)r 20 v i r = 0.5ma forward voltage drop (note 3) v f 0.310 0.430 v i f = 0.1a i f = 0.5a leakage current (note 3) i r 100 250 a v r = 10v v r = 20v total capacitance c t 170 pf f = 1mhz, v r = 0vdc 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 0.85 0.80 0 8 all dimensions in mm 1 of 2 www.sunmate.tw dual surface mount schooyky barrier diode SDM40E20LS maximum ratings and electrical characteristics t a = 25 c unless otherwise specified single phase, half wave, 60hz, resistive or inductive load. for capacitive load, derate current by 20%. ! ! ! ! ! ! ! !
0 0.10 0.20 050100150 i , average f o rward current (a) f(av) t , terminal temperature ( c) t fig. 1 forward current derating curve 0.30 0.40 25 75 125 0.01 0.1 1.0 10 0.2 0 0.4 0.6 0.8 1.0 i , instantaneous fwd current (a) f v , instantaneous forward voltage (v) f fi g .2 t y pical forward characteristics t=25 c j 10 100 1000 0 5 10 15 20 25 v , reverse voltage (v) r fi g .3 t y pical reverse characteristics t=25 c j c , capacitance (pf) t v , reverse voltage (v) r fi g .4 t y p. total capacitance vs reverse volta g e 1000 1.0 10 100 0 5 10 15 20 2 of 2 www.sunmate.tw
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