1N5817S-1N5819S Schottky Barrier Rectifiers VOLTAGE RANGE: 20 --- 40 V CURRENT: 1.0 A A - 405 Features xxxx Metal-Semiconductor junction with guard ring Epitaxial construction Low forward voltage drop,low switching losses High surge capability For use in low voltage,high frequency inverters free wheeling,and polarity protection applications The plastic material carries U/L recognition 94V-0 Mechanical Data Case:JEDEC A--405,molded plastic Terminals: Axial lead ,solderable per MIL- STD-202,method 208 Polarity: Color band denotes cathode Weight: 0.008 ounces,0.23 grams Mounting position: Any Dimensions in millimeters MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Ratings at 25 ambient temperature unless otherwise specified. Single phase,half wave,60 Hz,resistive or inductive load. For capacitive load,derate by 20%. 1N5817S 1N5818S 1N5819S UNITS Maximum recurrent peak reverse voltage V RRM 20 30 40 V Maximum RMS voltage V RMS 14 21 28 V Maximum DC blocking voltage VDC 20 30 40 V Maximum average forw ard rectified current 9.5mm lead length, @TA =75 IF(AV) 1.0 A IFSM 25.0 A Peak forw ard surge current 8.3ms single half-sine-w ave superimposed on rated load @TJ =70 Maximum instantaneous forw ard voltage @ 1.0A z (Note 1) @ 3.0A Maximum reverse current @TA =25 at rated DC blocking voltage @TA =100 Typical junction capacitance (Note2) Typical thermal resistance (Note3) Operating junction temperature range Storage temperature range NOTE: 1. Pulse test : 300 VF IR 0.55 0.75 0.875 1.0 10.0 CJ 110 Rθ JA 50 TJ - 55 ---- + 125 TSTG - 55 ---- + 150 s pulse width,1% duty cy cle. 2. Measured at 1.0MH Z and applied rev erse v oltage of 4.0V DC. 3.Thermal resistance junction to ambient 0.45 0.60 0.90 V mA pF ／Ｗ 1N5817S-1N5819S Schottky Barrier Rectifiers Ratings AND Charactieristic Curves FIG.2 -- PEAK FORWARD SURGE CURRENT AMPERES 0.75 Resistive or Inductive Load 0.375"(9.5mm)Lead Length 0.5 0.25 0 0 25 50 75 100 125 150 PEAK FORWARD SURGE CURRENT AMPERES 1.0 30 25 TJ=TJMAX 8.3ms Single Half Sine-Wave 20 25 10 5 0 1 10 100 AMBIENT TEMPERATURE, NUMBER OF CYCLES AT 60Hz FIG.3 -- TYPICAL INSTANTANEOUS FORWARD X -CHARACTERISTICS FIG.4 -- TYPICAL JUNCTION CAPACITANCE 20 400 1N5817S 1N5819S 1N5818S 1 T J = 25 P ulse w id th= 300 1 % D uty C yc le s .1 .1 .3 .5 .7 .9 1.1 1.3 1.5 1.7 1.9 2.1 INSTANTANEOUS FORWARD VOLTAGE, VOLTS CAPACITANCE, pF 10 AMPERES INSTANTANEOUS FORWARD CURRENT AVERAGE FORWARD RECTIFIED CURRENT FIG.1 -- FORWARD DERATING CURVE TJ=25℃ f=1.0MHz Vsig=50mVp-p 100 10 0.1 1 10 REVERSE VOLTAGE,VOLTS 100