low cost diffused junction low leakage low forward voltage drop case:jedec do--27,molded plastic mil-std-202,method 208 polarity: color band denotes cathode weight: 0.041ounces,1.15 grams mounting position: any ratings at 25 ambient temperature unless otherwise specified. single phase,half wave,50hz,resistive or inductive load. for capacitive load,derate by 20%. units maximum recurrent peak reverse voltage v rrm v ma x imu m rms v o ltag e v rms v ma x imu m dc b loc king v o ltag e v dc v maximum average forw ard rectified current 9.5mm lead length, @t a =75 peak forw ard surge current 8.3ms single half -sine-w ave superimposed on rated load @t j =125 ma x imu m in s ta nt an eo us f o r w ar d v o lt ag e @ i f =3a v f v maximum reverse current @t a =25 at rated dc blocking voltage @t a =100 ma x imu m r e v e r s e r e c ov er y time ( note 1) t rr ns typical junction capacitance (note2) c j pf typical thermal resistance (note3) r ja /w operating junction temperature range t j storage temperature range t stg 2. measured at 1.0mh z and applied rev erse v oltage of 4.0v dc. i f(av) 3. thermal resistance f rom junction to ambient. a i fsm i r a a note: 1. measured with i f =0.5a, i r =1a, i rr =0.25a. 210 400 280 1.25 1.5 125.0 300 400 easily cleaned with alcohol,isopropanol and s im ilar s olvents terminals: axial lead ,solderable per do - 27 300 maximum ratings and electrical characteristics 31DF3 31df4 high current capability voltage range: 300 --- 400 v current: 1.5 a - 55 ----- + 150 - 55 ----- + 150 5.0 50.0 30 90 34 dimensions in millimeters 31DF3-31df4 super fast rectifiers features mechanical data http://www.luguang.cn mail:lge@luguang.cn
50 02 5 7 5 125 100 150 single phase half wave 60hz resistive or inductive load 0.375"(9.5mm)lead length 2.0 1.5 1.0 0.5 0 0.01 0.1 1 10 0.6 0.8 1.0 1.2 1.4 1.6 1.8 t j =25 pulse width=300 s 0.02 0.04 0.2 0.4 2 4 pulse generator (note2) d.u.t. 1 nonin- ductive 50 n 1. 10 n1. oscilloscope (note 1) (+) 25vdc (approx) (-) t rr -1.0a -0.25a 0 +0.5a 1cm t j =25 f=1.0mhz 10 20 40 60 100 200 400 600 1000 0.1 0.2 0.4 1 2 4 10 40 100 20 25 50 75 100 150 125 1 0 105 50 100 8.3ms single half sine - wave amperes average forward current amperes number of cycles at 60h z peakforwordsurgecurrent junction capacitance, pf fi g. 5-- peak forword surge current amperes reverse voltage, volts fig.4-- typical junction capacitance instantaneous forward current fi g. 1 -- test ci rcui t di agram and reverse recovery ti me characteri sti c set tim e base for 10 ns/ cm notes:1.rise time = 7ns max.input impedance =1m . 22pf. jjjj 2.rise time =10ns max.source impedance=50 . fig.2 -- typical forward characteristic fig.3 -- forward derating curve ambient temperature, instantaneous forward voltage, volts 31DF3-31df4 super fast rectifiers ratings and charactieristic curves http://www.luguang.cn mail:lge@luguang.cn
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