leshan radio company, ltd. 36a?1/2 fast gpp diodes 1n4933g 1n4934g 1n4935g 1n4936g 1n4937g type maximum peak reverse voltage maximum average rectified current @ half-wave resistive load 60hz maximum forward peak surge current @ 8.3ms superimposed maximum reverse current @ prv @ t a =25oc maximum forward voltage @ t a =25oc package dimensions maximum reverse recovery time 1.0 trr i f = 0.5a, i r = 1.0a, i rr = 0.25a trr test conditions: i f = 0.5a, i r = 1.0a, i rr = 0.25a 50 100 200 400 600 prv v pk i o @ t l a av oc i fm (surge) a pk i r adc i fm v fm a pk v pk trr ns 1n4933g ? 1n4937g 55 30 5.0 1.0 1.2 150 do ? 41 do ? 41 .107(2.7) dia .080(2.0) 1.0(25.4) min .205(5.2) .166(4.2) .034(0.9) dia .028(0.7) 1.0(25.4) min
leshan radio company, ltd. 36a?2/2 1n4933g-1n4937g gpp rating & characteristic curves of fast gpp diode set time base for 50/100ns/cm fig.1-reverse recovery time characteristic and test circuit diagram trr i fm i rm (rec) i(t) di/dt=50a/ s 1cm a tektronix 545a.k plug in pre amp p6000 probe or equivalent r 1 adjusted for 1.4 ? ? between point 2 of relay and rectifier inductive =38 h 1.0adc from constant voltage supply ripple=3mvrms max 115va 10k 60hz 2w 1 7 6 8 5 3 2 c.p.clare hpg1002 30 ? ?50w non inductive 30vdc constant voltage supply 3 ? ?25w 1 amp slo blo fuse c 1 i.0 f 300v unit under test r 2 1 ? ? 10w non insuctive zout 1.5 ? ? max dc to 2khz r 2 ten 1w 10 ? ?% carbon core in parallel +10 t a 25 o oc for rectifier minimize all leas lengths 4 resistive or inductive load 0.375?(9.5mm) lead lengths fig. 2 - typical forward current derating curve ambient temper ature, (oc) average forward current,(a) 0 25 50 75 100 125 150 175 0.5 0.4 0.3 0.2 0.1 0 instantaneous forward current,(a) instantaneous forward voltage,(v) .6 .8 1.0 1.2 1.4 1.6 1.8 2.0 t j =25oc pulse width =300 s 2% duty cycle fig.3-typical forward characteristics 10 1 .1 .01 capacitance,(pf) 10 5 1 fig.4-typical junction capacitance 1 5 10 50 100 reverse voltage,(v) t j = 25oc instantaneous reverse current ( a) 20 10 1 .1 .01 t j =125oc fig.5-typical reverse characteristics t j =75oc percent of rated peak reverse voltage,(%) 0 20 40 60 80 100 120 140 t j =25oc
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