ba157g-lfr thru ba159g-lfr 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 fast recovery plastic rectifier ba157g-lfr thru ba159g-lfr features z for use in high freque ncy rectifier circuits z plastic package has underwriters laboratory flammability classification 94 v-0 z fast switching for high efficiency z glass passivated chip junction z lead free mechanical data z case: molded plastic case, do4, dimensions in inches and (millimeters) z terminal: axial leads, solderable per mil-std- 202, method 208 z polarity: color band denotes cathode z mounting position : any z weight: 0.34 gram maximum ratings and electrical characteristics ratings at 25 c ambient temperature unless otherwise specified single phase, half wave, 60 hz, resistive or induc tive load. for capacitive load, derate current by 20% ratings symbol ba157g-lfr BA158G-LFR ba159g-lfr units maximum recurrent peak reverse voltage v rrm 400 600 1000 v maximum rms voltage v rms 280 420 700 v maximum dc blocking voltage v dc 400 600 1000 v maximum average forward rectified current 0.375?(9.5mm) lead length at ta=55 c i o 1.0 a peak forward surge current, 8.3ms single half sine-wave superimposed on rated load i fsm 35 a typical junction capacitance (note 1) c j 15 pf typical thermal resistance (note 2) r ja 50 c/w storage temperature range t stg - 55 to + 150 c operating temperature range t op - 55 to + 150 c electrical characteristics (a t t a =25 c unless otherwise noted) characteristics symbol ba157g-lfr BA158G-LFR ba159g-lfr units maximum forward voltage at i o dc v f 1.3 v maximum reverse current at 25 c i r 5 a maximum reverse current at 100 c i r 50 a maximum reverse recovery time (note 3) t rr 150 250 ns note: 1. measured at 1 mhz and applied reverse voltage 0f 4.0 volts 2. both leads attached to heat sink 20x20x1t (mm) copper pla te at lead length 5mm 3. reverse recovery test conditions: i f =0.5a, i r =1.0a, i rr =0.25a .205(5.2) .166(4.2) 1.0(25.4) min .034(0.9) .028(0.7) 1.0(25.4) min .107(2.7) .080(2.0)
ba157g-lfr thru ba159g-lfr page: 2 ratings and characteristics curves ba157g-lfr thru ba159g-lfr 1.0 cycle fig. 3-maximum forward surge number of cycles 35 20 10 0 peak forward surge current amperes 1 10 100 number of cycles at 60 hz t a =150 o c pulse width= 8.3ms 1.0 0.8 0.6 0.4 0.2 0 t a -ambient temperature ( o c) fig. 2-maximum current derating curve 0 20 40 60 80 100 120 140 160 180 200 io-average rectified current ( a ) single phase half wave 60hz resistive or inductive load fig. 4-typical reverse characteristics instantaneous reverse current, microamperes 100 10 1.0 0.1 .01 0 20 40 60 80 100 120 140 percent of rated peak reverse voltage, % t j =100 o c t j =25 o c 10 1.0 0.1 .01 fig. 5-typical instantaneous forward characteristics instantaneous forward voltage, (v) instantaneous forward current ( a ) 0.4 0.6 0.8 1.0 1.2 1.4 1.6 tj=25 o c pulse width =300us 1% duty cycle +0.5a 0 -0.25a -1.0a trr 1cm set time base for 10/20 ns/cm fig. 1-test circuit diagram and reverse recovery time characteristic pulse generator (note 2) (+) 25 v dc (approx) (-) d.u.t. 1 non inductive oscilloscope (note 1) 50 no inductive 10 no inductive (-) (+) note: 1. rise time=7ns max. input impedance=1 mohms 22pf 2. rise time =10ns max. source impedance=50ohms
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