her301-lfr thru her308-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 3a ultra fast recovery rectifier her301-lfr thru her308-lfr features z plastic package has underwriters laboratory flammability classification 94v-0 z ultra fast recovery ti mes for high efficiency z low forward voltage, high current capability z low leakage z high surge capability z high temperature soldering guaranteed: 260c 0.375?(9.5mm) lead lengths for 10 seconds at 5 lbs. (2.3 kg) tension. z rohs mechanical data z case: jedec do-201ad, molded plastic, dimensions in inches and (millimeters) z terminals: axial leads solderable per mil-std-202, method 208 z polarity: color band denotes cathode end z mounting position: any z weight: 1.2 gram maximum ratings and electrical characteristics ratings at 25 c ambient temperature unless otherwise specified single phase, half wave, 60 hz, resistive or inductive load. for capacitive load, derate current by 20% ratings symbol her301 -lfr her302 -lfr her303 -lfr her304 -lfr her305 -lfr her306 -lfr her307 -lfr her308 -lfr units maximum recurrent peak reverse voltage v rrm 50 100 200 300 400 600 800 1000 v maximum rms voltage v rms 35 70 140 210 280 420 560 700 v maximum dc blocking voltage v dc 50 100 200 300 400 600 800 1000 v maximum average forward rectified current 0.375? (9.5mm) lead length at ta=50c i o 3.0 a peak forward surge current 8.3ms single half sine-wave superimposed on rated load i fsm 150 a typical junction capacitance (note 1) c j 75 50 pf typical thermal resistance (note 2) r ja 20 /w storage temperature range t stg -55 to + 150 operating temperature range t op -55 to + 150 electrical characteristics (at ta =25 c unless otherwise noted) characteristics symbol her301 -lfr her302 -lfr her303 -lfr her304 -lfr her305 -lfr her306 -lfr her307 -lfr her308 -lfr unit s maximum forward voltage at io dc v f 1.3 1.85 v maximum reverse current at ta=25 i r 10 a maximum reverse current at ta=100 i r 100 a maximum reverse recovery time (note 3) t rr 50 75 ns note: 1. measured at 1 mhz and applied reverse voltage of 4.0 volts 2. both leads attached to heat sink 63.5 63.5 1t(mm) copper plate at lead length 5mm 3. reverse recovery test conditions: i f =0.5a,i r =1.0a,i rr =0.25a .375(9.5) .335(8.5) 1.0(25.4) min .220(5.6) .197(5.0) 1.0(25.4) min .052(1.3) .048(1.2)
her301-lfr thru her308-lfr page: 2 ratings and characteristic curve her301-lfr thru her308-lfr fig. 5 -maximum non-repetitive forward surge current 300 200 100 0 1 10 100 1000 number of cycles at 60 hz peak forward surge current (a) 8.3 ms single half sine wave (jedec method) fig. 6 -typical junction capacitance .1 .2 .4 1.0 2 4 10 20 40 100 reverse voltage (v) 200 100 40 20 10 6 4 2 1 junction capacitance (pf) her301-lf ~305-lf her306-lf ~308-lf t j =25 o c fig. 3 -typical reverse characteristics 20 40 60 80 100 120 140 percent of rated peak reverse voltage (%) 1000 100 10 1 0.1 t j =25 o c t j =80 o c t j =125 o c instantaneous reverse current (ua) average forward current (a) 6 5 4 3 2 1 0 25 50 75 100 12 5 15 0 17 5 ambient temperature ( o c) fig. 2 -typical forward current derating curve single phase half wave 60 hz resistive or inductive load +0.5a 0 -0.25a -1.0a trr 1c m set time base for 10/20 ns/cm fig. 4 -typical instantaneous forward characteristics .2 .4 .6 .8 1.0 1.2 1.4 1.6 1.8 2.0 instantaneous forward voltage (v) her301-lf ~303-lf her304-lf ~305-lf 100 10 1 .1 .01 instantaneous forward current (a) her306-lf ~308-lf 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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