1N4942

BL FEATURES Low cost GALAXY ELECTRICAL 1N4942 - - - 1N4948 VOLTAGE RANGE: 200 --- 1000 V CURRENT: 1.0 A FAST RECOVERY RECTIFIER D O - 41 D iffused junction Low leakage Low forward voltage drop High current capability Easily cleaned with Freon,Alcohol,Isopropanol and similar solvents The plastic material carries U/L recognition 94V-0 MECHANICAL DATA C ase:JEDEC DO-41,molded plastic Terminals: Axial lead ,solderable per MIL- STD-202,Method 208 Polarity: Color band denotes cathode Weight: 0.34 grams Mounting position: Any MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS R atings at 25 ambient temperature unless otherwise specified. Single phase,half wave,60 Hz,resistive or inductive load. For capacitive load,derate by 20%. 1N 4942 Maximum recurrent peak reverse voltage Maximum RMS voltage Maximum DC blocking voltage Maximum average forw ard rectified current 9.5mm lead length, @TA=75 1N 4944 400 280 400 1N 4946 600 420 600 1.0 1N 4947 800 560 800 1N 4948 1000 700 1000 UNITS V V V A V RRM V RMS V DC IF(AV) 200 140 200 Peak forw ard surge current 8.3ms single half-sine-w ave superimposed on rated load @TJ =125 IFSM 30.0 A Maximum instantaneous forw ard voltage @ 1.0 A Maximum reverse current at rated DC blocking voltage @TA=25 @TA=100 VF IR t rr CJ RθJA TJ TSTG 150 1.3 5.0 100 250 12 55 - 55---- +150 - 55---- + 150 500 V A ns pF /W Maximum reverse recovery time (Note1) Typical junction capacitance Typical thermal resistance (Note2) (Note3) Operating junction temperature range Storage temperature range N OTE:1. Measured with I F =0.5A, I R=1A, I rr=0.25A. www.galaxycn.com 2. Measured at 1.0MHz and applied rev erse v oltage of 4.0V DC. 3. Thermal resistance f rom junction to ambient. Document Number 0261081 BLGALAXY ELECTRICAL 1. RATINGS AND CHARACTERISTIC CURVES 50 N.1. 10 N.1. 1N4942---1N4948 FIG.1 -- REVERSE RECOVERY TIME CHARACTERISTIC AND TEST CIRCUIT DIAGRAM t rr +0.5A D.U.T. (+) 50VDC (APPROX) (-) 1 N.1. (-) PULSE GENERATOR (NOTE2) OSCILLOSCOPE (NOTE 1) (+) 0 -0.25A -1.0A N TE 1. R TIM = 7ns M IN U IM E AN E= 1M . 22P O S: ISE E AX. P T P D C F 2. R TIM = 10ns M SO R EIM E AN E= 50 ISE E AX. U C P D C SE TIM BASE FO 50/100 ns /cm TE R 1cm FIG.2 --FORWARD DERATING CURVE INSTANTANEOUS FORWARD CURRENT AMPERES FIG.3 -- TYPICAL FORWARD CHARACTERISTICS AVERAGE FORWARD CURRENT AMPERES 1.0 100 10 4 2 1 .0 0 .4 0 .2 0 .1 0 .06 0 .04 0 .02 0 .01 0 .6 0 .8 1 .0 1 .2 1 .4 1 .6 1.8 2.0 TJ=25 P u ls e W id th = 3 0 0 µ S .8 .6 .4. .2 Single Phase Half Wave 60H Z Resistive or Inductive Load 25 50 75 100 0 125 150 175 AMBIENT TEMPERATURE, FIG.4--PEAK FORWARD SURGE CURRENT PEAK FORWARD SURGE CURREN AMPERES INSTANTANEOUS FORWARD VOLTAGE,VOLTS FIG.5-- TYPICAL JUNCTION CAPACITANCE JUNCTION CAPACITANCE,pF 100 60 40 20 10 50 8.3ms Single Half Sine-Wave 40 30 20 4 2 1 .1 10 0 1 2 TJ=25 f=1MHz 4 6 8 10 20 40 60 80 100 .2 .4 1.0 2 4 10 20 40 100 NUMBER OF CYCLES AT 60 Hz REVERSE VOLTAGE,VOLTS www.galaxycn.com Document Number 0261081 BLGALAXY ELECTRICAL 2.