dimensions in inches and (millimeters) melf features plastic package has carries underwriters laboratory flammability classification 94v-0. surge overload rating to 30 amperes peak ideal for printed circuit board reliable low cost constr uction utilizing molded plastic technique results in inexpensive product high temperature soldering guaranteed: 260 o c / 10 seconds at terminals. mechanical data mounting position: any weight: 0.12 gram maximum ratings and electrical characteristics rating at 25 o c 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 ll 4933g ll 4934g ll 4935g ll 4936g ll 4937g units m aximum recurrent p eak r everse v oltage 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 @t a = 75 o c i (av) 1.0 a peak forward surge current, 8.3 ms single half sine-wave superimposed on rated load (jedec method ) i fsm 30 a maximum instantaneous forward voltage @1.0a v f 1.2 v maximum dc reverse current @ t a =25 o c at rated dc blocking voltage @ t a =125 o c i r 5 100 ua ua maximum reverse recovery time(note 3) trr 150 ns typical junction capacitance ( note 1 ) cj 15 pf typical thermal resistance (note 2) r jc 60 o c/w operating and storage temperature range t j ,t stg - 65 to + 150 o c notes: 1. measured at 1 mhz and applied reverse voltage of 4.0 volts d.c. 2. thermal resistance from junction to case. mount on 0.2 x 0.2 cu-pad on p.c.b. 3. reverse recovery test conditions: i f =0.5a, i r =1.0a, i rr =0.25a LL4933G-ll4937g 1.0amp. surface mount glass plassivated silicon rectifiers http://www.luguang.cn mail:lge@luguang.cn
fig.6- 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 (LL4933G thru ll4937g) fig.2- typical forward characteristics instantaneous forward current. (a) 1.6 1.8 2.0 0.6 0.8 1.0 1.2 1.4 0.03 0.1 0.3 1 10 20 3 0.01 forward voltage. (v) tj=25 c pulse width=300 s 1% duty cycle o fig.4- typical junction capacitance junction capacitance.(pf) 1 10 100 20 10 1 reverse voltage. (v) tj=25 c 0 f=1 mhz vsig=50mvp-p fig.5- typical reverse characteristics instantaneous reverse current. (ma) 0 20 40 60 80 100 120 140 1000 100 10 1 percent of rated peak reverse voltage. (%) tj=75 c 0 fig.1- maximum forward current derating curve average forward rectified current amperes 25 0 50 75 100 125 150 175 0.4 0 0.2 0.6 0.8 1.0 ambient temperature. ( c) o fig.3- maximum non-repetitive forward surge current peak forward surge current amperes 1 2 4 10 20 60 80 6 8 40 100 20 10 0 30 number of cycles at 60hz 8.3ms single half sine wave jedec method p.c.b. monted on 0.2x0.2" (5.0x5.0mm)copper areas pads tj=75 c 0 1.0 cycle tj=25 c 0 tj=125 c 0 LL4933G-ll4937g 1.0amp. surface mount glass plassivated silicon rectifiers http://www.luguang.cn mail:lge@luguang.cn
|
