B5817W thru b5819w schottky diode case : molded plastic body terminals : plated leads solderable per mil-std-750, method 2026 polarity : polarity symbols marked on case marking : B5817W:sj, b5818w:sk, b5819w:sl features mechanical data for use in low voltage, high frequency inverters free wheeling, and polanty protection applications electrical ratings @t a =25c symbols test conditions v (br) reverse breakdown voltage reverse voltage leakage current forward voltage diode capacitance parameter min. max. unit v v v i r =1ma 0.45 0.75 0.55 0.875 0.6 0.9 120 1 9 1.5 500 200 -65 to +150 30 maximum ratings and electrical characteristics, single diode @t a =25c symbols units v rrm v rwm v r peak repetitive peak reverse voltage working peak reverse voltage dc blocking voltage rms reverse voltage average rectified output current peak forward surge current @=8.3ms repetitive peak forward current power dissipation thermal resistance junction to ambient storage temperature non-repetitive peak reverse voltage t stg v rm v v a a a mw c/w c v b5818w 30 21 v r(rms) i o pd parameter i fsm r q ja i r 20 30 40 pf i frm B5817W b5819w 20 40 14 28 20 40 c d v f 1 ma v v v v r =4v,f=1.0mhz B5817W b5818w b5819w v r =20v v r =30v v r =40v B5817W b5818w b5819w i f =1a i f =3a B5817W b5818w b5819w .25(.010) min sod-123 1.80(.071) 1.40(.055) 3.86(0.152) 3.56(0.145) 2.84(0.112) 2.54(0.100) .71(0.028) .50(0.020) 1.35(.053) .94(.037) .15(.006) max dimensions in millimeters and (inches)
ratings and characteristic curves B5817W thru b5819w 0 10 100 number of cycles at 60hz fig. 2-maximum non-repetitive peak forward surge current fig. 1- forward current derating curve average forward current (a) 10.8 9.0 7.2 5.4 3.6 1.8 0 case temperature( c ) peak forward surge current (a) 1.25 1.0 0.75 0.5 0.25 0 0 20 40 60 80 100 120 140 fig. 3- typical instantaneous forward characteristics instantaneous forward current (a) 0 0.4 0.8 1.2 1.6 50 10 1.0 0.1 0.01 instantaneous forward voltage(v) fig. 4- typical reverse characteristics instantaneous reverse current (ma) 0 20 40 60 80 100 100 10 1.0 0.1 0.01 0.001 percent of rated peak peverse voltage (%) t a =125 c fig. 5- typical junction capacitance junction capacitance (pf) reverse voltage (v) 400 100 10 0.1 1 10 100 resistive or inductive load0.375''(9.5mm) lead length t a =25 c pulse width=300 u s 1% duty cycle t j =125 c t j =75 c t j =25 c 0.01 1 10 100 100 10 1 0.1 transient thermal impedance ( c /w) fig. 6-typical transient thermal impedance t--pulse duration (sec.) the cruve g ra p h is for reference onl y , can't be the basis for j ud g ment ( ? ) !
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