ds15001 rev. d-2 1 of 2 DL4933-dl4937 www.diodes.com diodes incorporated features glass passivated junction low leakage low forward voltage drop high current capability for surface mounted application plastic material ul flammability classification rating 94v-0 single phase, half wave, 60hz, resistive or inductive load. for capacitive load, derate current by 20%. maximum ratings and electrical characteristics @ t a = 25 c unless otherwise specified characteristic symbol DL4933 dl4934 dl4935 dl4936 dl4937 units peak repetitive reverse voltage working peak reverse voltage dc blocking voltage v rrm v rwm v r 50 100 200 400 600 v rms reverse voltage v r(rms) 35 70 140 280 420 v maximum average forward rectified current @ t t =75c i o 1.0 a peak forward surge current 8.3 ms half sine-wave superimposed on rated load (jedec method) i fsm 30 a maximum instantaneous forward voltage @ i f = 1.0a v f 1.2 v maximum dc reverse current at rated blocking voltage i r 5.0 a maximum full load reverse current full cycle average @ t t = 55 c i r 100 a maximum reverse recovery time (note 1) t rr 200 ns typical junction capacitance (note 2) c j 15 pf operating and storage temperature range t j, t stg -65 to +150 c notes: 1. reverse recovery test conditions: i f =1.0a, v r =30v, di/dt = 50 a/ s. 2. measured at 1.0mhz and applied reverse voltage of 4.0v. DL4933 - dl4937 1.0a surface mount fast recovery rectifier mechanical data case: melf, plastic terminals: solderable per mil-std-202, method 208 polarity: cathode band approx weight: 0.25 grams mounting position: any marking: cathode band only melf dim min max a 4.80 5.20 b 2.40 2.60 c 0.55 nominal all dimensions in mm c a b
ds15001 rev. d-2 2 of 2 DL4933-dl4937 www.diodes.com 0.01 0.1 1.0 10 0.6 0.8 1.0 1.2 1.4 t = 25oc j pulse width = 300 ms i , peak f o rward surge current (a) fsm v , instantaneous forward voltage (v) f fig. 1 peak forward surge current vs forward voltage 1 10 100 1 10 100 c , junction capacitance (pf) j v , reverse voltage (v) r fi g . 4 junction capacitance vs reverse volta g e t = 25oc j f = 1mhz 0 10 20 30 1 10 100 i , peak forward surge current (a) fsm numberofcyclesat60hz fig. 3 peak fwd surge current vs number of cycles at 60 hz t = 150oc j pulse width 8.3 ms single half sine-wave 0 0.2 0.4 0.6 0.8 1.0 25 50 75 100 125 150 175 200 i , average forward rectified current (a) o t , terminal temperature (oc) t fi g . 2 forward deratin g curve single phase half wave 60 hz resistive or inductive load
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