SM18

SM17 thru SM19 Surface Mount Schottky Power Rectifiers P b Lead(Pb)-Free 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 SCHOTTKY BARRIER RECTIFIERS 1.0 AMPERES 20-40 VOLTS 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(DO-214AC) SMA Outline Dimension B Unit:mm A C D J H E G 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 WEITRON http://www.weitron.com.tw SM17 thru SM19 Maximum Rating Characteristic Peak Repetitive Reverse Voltage Working Peak Reverse Voltage DC Blocking Voltage RMS Reverse Voltage Average Rectifier Forward Current Peak Repetitive Forward Current (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 TJ ,T STG -65 to + 125 C IFSM 25 A Symbol VRRM VRWM VR VR(RMS) IF(AV) I FM SM17 20 SM18 30 SM19 40 UNIT V 14 21 1.0 1.0 28 V A A Electrical Characteristic Characteristic Maximum Instanatneous Forward Voltage (IF=1.0Amp) Maximum Instantaneous Reverse Current (Rated DC Voltage, Tc=25 C) (Rated DC Voltage, Tc=100 C) Typical Junction Capacitance (VR=4.0V, f=1.0MHz) CP IR 0.5 50 50 PF mA Symbol VF SM17 0.450 SM18 0.50 SM19 0.50 UNIT V WEITRON http://www.weitron.com.tw SM17 thru SM19 AVERAGE FORWARD RECTIFIED CURRENT(AMP.) 1.2 1 0.8 0.6 0.4 0.2 0 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 FIG.1 Forward Current Derating Curve LEAD TEMPERATURE( C) INSTANTANEOUS FORWARD CURRENT(AMP.) 10 JUNCTION CAPACITANCE(PF) 100 1 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 10 0.1 FIG.2 Typical Forward Characteristics FORWARD VOLTAGE(V) FIG.3 Typcial Junction Capacitance REVERSE VOLTAGE(V) 1 10 PEAK FORWARD SURGE CURRENT(AMP.) 30 25 20 15 10 5 0 1 10 100 FIG.4 Peak Forward Surge Current NUMBER OF CYCLES AT 60Hz http://www.weitron.com.tw WEITRON