SM5817 thru SM5819 SURFACE MOUNT REVERSE VOLTAGE - 20 to 40 Volts FORWARD CURRENT - 1.0 Amperes SCHOTTKY BARRIER RECTIFIERS FEATURES SMA ● Metal-Semiconductor junction with gard ring ● Epitaxial construction ● Low forward voltage drop ● High current capability .062(1.60) .055(1.40) ● The plastic material carries UL recognition 94V-0 .114(2.90) .098(2.50) ● For use in low vlotage, high frequency inverters, free wheeling, and polarity protection applications .181(4.60) .157(4.00) .012(.305) .006(.152) .103(2.62) .079(2.00) MECHANICAL DATA ●Case： Molded Plastic .060(1.52) .030(0.76) ●Polarity: lndicated by cathode band .208(5.28) .188(4.80) ●Weight: 0.002 ounces,0.064 grams .008(.203) .002(.051) Dimensions in inches and (millimeters) MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Rating at 25℃ ambient temperature unless otherwise specified. Single phase, half wave ,60Hz, resistive or inductive load. For capacitive load, derate current by 20% CHARACTERISTICS Maximum Recurrent Peak Reverse Voltage Maximum RMS Voltage Maximum DC Blocking Voltage Maximum Average Forward Rectified Current @TA =75 ℃ SYMBOL SM5817 SM5818 SM5819 UNIT VRRM 20 30 40 V VRMS 14 21 28 V VDC 20 30 40 V I(AV) 1.0 A IFSM 40 A Peak Forward Surage Current 8.3ms Single Half Sine-Wave Super Imposed on Rated Load(JEDEC Method) Maximum Forward Voltage at 1.0A DC VF 0.450 0.550 0.600 V Maximum Forward Voltage at 3.0A DC VF 0.750 0.875 0.900 V Maximum DC Reverse Current @TJ=25℃ at Rated DC Bolcking Voltage @TJ=100℃ Typical Junction Capacitance (Note1) Typical Thermal Resistance (Note2) Operating Temperature Range Storage Temperature Range 1.0 IR 10 mA CJ 110 pF RθJA 80 ℃/W TJ -55 to +150 ℃ TSTG -55 to +150 ℃ NOTES: 1.Measured at 1.0 MHz and applied reverse voltage of 4.0V DC 2.Thermal resistance junction to ambient, ~ 153 ~ RATING AND CHARACTERTIC CURVES SM5817 thru SM5819 FIG. 2 – MAXIMUM NON-REPETITIVE SURGE CURRENT PEAK FORWARD SURGE CURRENT, (AMPERES） FIG. 1 - FORWARD CURRENT DERATING CURVE AVERAGE FORWARD CURRENT AMPERES 1.00 0.75 0.5 SINGLE PHASE HALF WAVE 60Hz RESISTIVE OR INDUCTIVE LOAD 0.25 0 25 50 75 100 125 150 40 30 20 10 PULSE WIDTH 8.3mS SINGLE HALF-SINE-WAVE (JEDEC METHOD) 0 1 175 2 10 20 50 100 NUMBER OF CYCLES AT 60Hz AMBIENT TEMPERATURE ℃ FIG.4-TYPICAL FORWARD CHARACTERISTICS FIG.3 – TYPICAL JUNCTION CAPACITANCE 1000 10 INSTANTANEOUS FORWARD CURRENT, (A) CAPACITANCE, (pF) 5 100 T J= 25°C f = 1 MHz 1N5817 1N5819 1N5818 1.0 T J = 25°C PULSE WIDTH 300us 0.1 1 1 4 10 0 100 0.2 0.4 0.6 0.8 1.0 INSTANTANEOUS FORWARD VOLTAGE, (VOLTS) REVERSE VOLTAGE, (VOLTS) ~ 154 ~ 1.2