2008 .9 11 1/2 semiconductor technical data SMFB13 schottky barrier type diode revision no : 7 switching type power supply applications. features ? repetitive peak reverse voltage : v rrm =30v. ? averge output rectitifed current : i o =1.0a. ? feak forward voltage : v fm =0.42v(max.) ? for use in low voltage, high frequency inverters, free wheeling, and polarity protection applications. application ? switching power supply. ? reversed battery connection protection. ? dc/dc converter. ? cellular phones. maximum rating (ta=25 ? ) + _ + _ + _ + _ + _ + _ smf dim millimeters a b a b c d e f g 2.6 0.05 3.5 0.1 0.9 0.05 1.6 0.05 0.65 0.05 + _ 0.11 0.05 0 ~ 0.1 d e e f 0.98 0.05 h 1 2 c g h 1. anode 2. cathode electrical characteristics (ta=25 ? ) marking b13 type name lot no. characteristic symbol test condition min. typ. max. unit peak forward voltage v fm i fm =1.0a - - 0.42 v repetitive peak reverse current i rrm v rrm =rated - - 50 ? thermal resistance r th(j-1) junction to lead - - 20 ? /w r th(j-a) junction to ambient (on a grass-epoxy board) - - 140 characteristic symbol rating unit maximum repetitive peak reverse voltage v rrm 30 v average output rectitifed current i o 1 a peak one cycle surge forward current (non-repetitive 60hz) i fsm 22 a junction temperature t j -65 ?- 150 ? storage temperature range t stg -65 ?- 150 ?
2008. 9. 11 2/2 SMFB13 revision no : 7 i - v ff f forward voltage v (v) f forward current i (a) number of cycles peak surge forward current i (a) 1 0 8 4 16 12 28 24 20 fsm 10 surge forward current (non - repetitive) 100 ta=25 c f=60hz p - i f(av) f(av) f(av) average forward current i (a) 0 0 0.1 0.2 0.3 0.7 0.6 0.4 0.5 f(av) average forward power dissipation p (w) 0.2 0.6 0.4 0.8 1.0 1.2 1.6 1.4 rectangular rectangular waveform conduction angle =60 conduction angle 0 360 ta - i f(av) f(av) average forward current i (a) 0 0 20 40 100 80 60 120 140 maximum allowable temperature ta max ( c) 0.2 0.4 0.6 1.0 1.2 0.8 1.4 1.6 on a grass- epoxy board waveform 0 i f(av) v =15v r 360 0 0.2 0.4 0.6 10 0.01 0.1 1 =60 120 dc 180 120 180 dc t j = 75 c t j = 25 c t j = 125 c
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