SM17 thru SM19 Surface Mount Schottky Power Rectifiers P b Lead(Pb)-Free SCHOTTKY BARRIER RECTIFIERS 1.0 AMPERES 20-40 VOLTS Feature: *Low Forward Voltage *Low Switching Noise *High Surge Capacity *Guarantee Reverse Avalance *Gurad-ing for Stress Protection *Low Power Loss & High Efficiency *125 C Operating Junction Temperature *Low Stored Charge Majority Carrier Conduction *Case: Epoxy, Molded SMA(DO-214AC) Product Description: Using the Schottky Barrier principle with a Molybdenum barrier metal. These state-of-are geometry features epitaxial construction with oxide passivation and metal overlay contact. Ideally suited for low voltage, high frequency rectification, or as free wheeling and polarity protection diodes, in surface mount applications where compact size and weight are critical to the system. SMA Outline Dimension Unit:mm B A C D J G H E WEITRON http://www.weitron.com.tw Dim A B C D E G H J SMA Min 2.20 4.00 1.27 0.15 4.48 0.10 0.76 1.70 Max 2.92 4.60 1.63 0.31 5.59 0.20 1.52 2.62 SM17 thru SM19 Maximum Rating Characteristic Peak Repetitive Reverse Voltage Working Peak Reverse Voltage Symbol SM17 SM18 SM19 UNIT VRRM VRWM 20 30 40 V 14 21 28 V DC Blocking Voltage VR RMS Reverse Voltage VR(RMS) Average Rectifier Forward Current IF(AV) 1.0 A Peak Repetitive Forward Current I FM 1.0 A IFSM 25 A (Rate VR,Square Wave, 20 KHz) Non-Repetitive Peak Square Current (Surge Applied atRated Load Condition Halfware, Single Phase, 60Hz) Operating and Storage Junction Temperature Range C -65 to + 125 TJ ,T STG Electrical Characteristic Characteristic Maximum Instanatneous Forward Voltage (IF=1.0Amp) Symbol VF SM17 SM18 SM19 UNIT 0.450 0.50 0.50 V Maximum Instantaneous Reverse Current (Rated DC Voltage, Tc=25 C) IR (VR=4.0V, f=1.0MHz) WEITRON http://www.weitron.com.tw mA 50 (Rated DC Voltage, Tc=100 C) Typical Junction Capacitance 0.5 CP 50 PF AVERAGE FORWARD RECTIFIED CURRENT(AMP.) SM17 thru SM19 1.2 1 0.8 0.6 0.4 0.2 0 0 10 20 30 40 50 60 70 80 90 100 110 120 130140 LEAD TEMPERATURE( C) JUNCTION CAPACITANCE(PF) 10 1 0 0.2 0.4 0.6 0.8 1 1.2 1.4 100 10 0.1 1.6 FORWARD VOLTAGE(V) 1 30 25 20 15 10 5 0 1 10 NUMBER OF CYCLES AT 60Hz FIG.4 Peak Forward Surge Current WEITRON http://www.weitron.com.tw REVERSE VOLTAGE(V) 10 FIG.3 Typcial Junction Capacitance FIG.2 Typical Forward Characteristics PEAK FORWARD SURGE CURRENT(AMP.) INSTANTANEOUS FORWARD CURRENT(AMP.) FIG.1 Forward Current Derating Curve 100