ls12b thru ls14b page: 1 frontier electronics corp. 667 e. cochran street, simi valley, ca 93065 tel: (805) 522-9998 fax: (805) 522-9989 e-mail: frontiersales@frontierusa.com web: http://www.frontierusa.com 1a surface mount low forward voltage schottky barrier rectifiers ls12b thru ls14b features z for surface mounted applications z low forward voltage z low profile package z built-in strain relief z easy pick and place z plastic material used carries underwriters laboratory classification 94 v-0 z extremely low vf z majority carrier conduction z high temperature soldering: 250c/10 seconds at terminals mechanical data z case: molded plastic, do-214aa (smb), dimensions in inches and (millimeters) z terminals: solder plated z polarity: indicated by cathode band z weight: 0.093 grams maximum ratings and electrical characteristics ratings at 25 c ambient temperature unless otherwise specified single phase, half wave, 60 hz, resistive or inducti ve load for capacitive load, derate current by 20% ratings symbol ls12b LS13B ls14b units maximum recurrent peak reverse voltage v rrm 20 30 40 v maximum rms voltage v rms 14 21 28 v maximum dc blocking voltage v dc 20 30 40 v maximum average forward rectified current see fig.1 (note 1) i o 1.0 a maximum overload surge 8.3ms single half sine-wave i fsm 25 a typical thermal resistance (note 2) r jl 35 /w typical thermal resistance (note 2) r ja 95 /w storage temperature range t stg -55 to + 150 operating temperature range t op -55 to + 125 electrical characteristics (a t t a =25 c unless otherwise noted) characteristics symbol ls12b LS13B ls14b units maximum forward voltage at 1.0a and 25 (note 1) v f 0.395 v maximum reverse current at 25 (note 1) i r 0.5 ma maximum reverse current at 100 (note 1) i r 20.0 ma note: 1. pulse test : 300 s pulse width , 1% duty cycle 2. p.c.b. mounted 0.55?0.55 ?(1414 mm ) 0.013mm thick copper pad areas .060(1.52) .030(0.76) .220(5.59) .205(5.21) .096(2.44) .084(2.13) .180(4.57) .160(4.06) .155(3.94) .130(3.30) .086(2.20) .077(1.96) cathode
ls12b thru ls14b page: 2 ratings and characteristic curve ls12b thru ls14b instantaneous reverse current, milliamperes 0 20 40 60 80 100 120 140 percent of rated peak reverse voltage, (%) fig. 3 - typical reverse characteristics 100 10 1.0 .10 .01 .001 t j = 125 pulse width=300us 1% duty cycle 1 2 5 10 20 50 100 number of cycles at 60h z fig. 1 - forward current derating curve 1.0 .75 .50 .25 0 average forward current amperes 0 25 50 75 100 125 150 175 lead temperature, single phase half wave 60h z resistive or inductive load p.c.b mounted on 0.30.3?(8.08.0mm) copper pad areas i g. 5 - typical junction capacitance 400 200 100 80 60 40 20 10 junction capacitance ( p f) .1 .4 1.0 4 10 40 reverse voltage (v) t j =25 0 c f ig. 4 - maximum non-repetitive 30 25 20 10 5 peak forward surge current ( a )
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