1n4933s thru 1n4937s 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 1n4933s thru 1n4937s features z low cost z plastic package has underwriters laboratory flammability classification 94v-0 z 1 ampere operation at ta=55c with no thermal runaway z fast switching for high efficiency z exceeds environmental standards of mil-std-19500 z high temperature soldering guaranteed: 250c/ 10s/0.375?(9.5mm) lead length /5 lbs (2.3kg) tension mechanical data z case: jedec do-41, molded case, 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: 0.20 grams 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 1n4933s 1n4934s 1N4935S 1n4936s 1n4937s units maximum recurrent peak reverse voltage v rrm 50 100 200 400 600 v maximum rms voltage v rms 35 70 140 280 420 v maximum dc blocking voltage v dc 50 100 200 400 600 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 30 a typical junction capacitance (note 1) c j 15 pf typical thermal resistance (note 2) r ja 50 /w storage temperature range t stg - 55 to + 150 operating temperature range t op - 55 to + 150 electrical characteristics (a t t a =25 c unless otherwise noted) characteristics symbol 1n4933s 1n 4934s 1N4935S 1n4936s 1n4937s units maximum forward voltage at i o dc v f 1.2 v maximum reverse current at 25 i r 5 a maximum reverse current at 100 i r 50 a maximum reverse recovery time (note 2) t rr 120 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 plate 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) .025(0.6) .021(0.5) 1.0(25.4) min 1.0(25.4) min .107(2.7) .080(2.0)
1n4933s thru 1n4937s page: 2 0 20 40 60 80 100 120 140 ratings and characteristic curve 1n4933s thru 1n4937s 1.0 cycle fig. 5-maximum forward surge number of cycles 30 20 10 0 peak forward surge current amperes 1 10 100 number of cycles at 60 hz t a =75 o c 8.3ms single half sine-wave jedec method +0.5a 0 -0.25a -1.0a trr 1cm set time base for 10/20 ns/cm note: 1. rise time=7ns max. input impedance=1 mohms 22pf 2. rise time =10ns max. source impedance=50 ohms 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 (-) (+) fig. 3-typical junction capacitance f = 1 mhz vsig = 50 mvp-p tj=25 o c capacitance, pf 20 10 1 1 10 100 reverse voltage, volts fig. 4-typical reverse characteristics t j =100 o c t j =25 o c 100 10 1.0 0.1 .01 instantaneous reverse current, micro amperes(ua) percent of rated peak reverse voltage 10 1.0 0.1 .01 instantaneous forward current , i f ( a ) .4 .6 .8 1.0 1.2 1.4 1.6 instantaneous forward voltage, (v) fig. 6-t typical instantaneous forward characteristics tj=25 o c pulse width =300us 1% duty cycle 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 ) 1.0 0.8 0.6 0.4 0.2 0 i(pk) i(av) = resistive or inductive load 0.375?(9.5mm) lead length capacitive load i(pk) i( av ) 5 = 10 20
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