- 334 - her301g thru her308g 3.0 amps. glass passivated high efficient rectifiers voltage range 50 to 1000 volts current 3.0 amperes f eatures low forward voltage drop high current capability high reliability high surge current capability m echanical data case: molded plastic epoxy: ul 94v-o rate flame retardant lead: axial leads, solderable per mil-std- 202, method 208 guaranteed polarity: color band denotes cathode end high temperature so ldering guaranteed: 260 o c/10 seconds/.375?,(9.5mm) lead lengths at 5 lbs., (2.3kg) tension mounting position: any weight: 1.1 grams do-201ad dimensions in inches and (millimeters) m aximum ratings and electrical characteristics rating at 25 ambient temperature unless otherwise specified. single phase, half wave, 60 hz , resistive or inductive load. for capacitive load, derate current by 20% type number symbol her 301g her 302g her 303g her 304g her 305g her 306g her 307g her 308g 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 .375 (9.5mm) lead length @t a = 55 i (av) 3.0 a peak forward surge current, 8.3 ms single half sine-wave superimposed on rated load (jedec method ) i fsm 125 a maximum instantaneous forward voltage @ 3.0a v f 1.0 1.3 1.7 v maximum dc reverse current @ t a =25 at rated dc blocking voltage @ t a =125 i r 10.0 200 ua ua maximum reverse recovery time (note 1) trr 50 75 ns typical junction capacitance (note 2) cj 60 35 pf typical thermal resistance (note 3) r ja r jl 35 10 /w operating & storage temperature range t j /t stg -65 to +150 notes: 1. reverse recovery test conditions: i f =0.5a, i r =1.0a, i rr =0.25a 2. measured at 1 mhz and applie d reverse voltage of 4.0 v d.c. 3. mount on cu-pad size 16mm x 16mm on p.c.b
- 335 - fig.1- reverse recovery time characteristic and test circuit diagram 50 noninductive non inductive oscilloscope (note 1) pulse generator (note 2) dut (+) 50vdc (approx) (-) notes: 1. rise time=7ns max. input impedance= 1 megohm 22pf 2. rise time=10ns max. sourse impedance= 50 ohms (-) (+) 10 noninductive -1.0a -0.25a 0 +0.5a trr 1cm set time base for 5/ 10ns/ cm ratings and characteristic curves (her301g thru her308g) fig.2- maximum forward current derating curve average for ward current . (a) 25 50 75 100 125 150 175 1 2 3 4 5 6 case temperature. ( c) o single phase half wave 60hz resistive or inductive load 0.375" (9.5mm) lead length fig.5- maximum non-repetitive forward surge current peak for ward surge current . (a) 1 10 1000 50 100 150 125 200 100 50 0 250 number of cycles at 60hz 8.3ms single half sine wave jedec method fig.3- typical reverse characteristics 140 20 40 60 80 100 120 0.1 0.01 1 10 100 1000 percent of rated peak reverse voltage. (%) tj=25 c 0 tj=125 c 0 fig.4- typical forward characteristics instantaneous for ward current . (a) 0.2 0.4 0.6 0.8 1.0 1.2 1.4 0.01 0.1 1 10 100 forward voltage. (v) her301g~her304g her305g her306g~her308g fig.6- typical junction capacitance junction cap acitance.(pf) 0.1 0.5 1 5 2 10 20 50 100 200 500 25 0 50 75 100 125 150 175 reverse voltage. (v) her301g~her305g her306g~her308g instantaneous reverse current .( a) tj=75 c 0 0 0 800 0 0
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