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 Dim A B C D E G H J C D J G H E WEITRON http://www.weitron.com.tw 1/3 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 Rev.A 23-Apr-08 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 Thermal Resistance Junction-ambient RθJA 88 °C/W Thermal Resistance Junction-case RθJC 40 °C/W Operating Temperature Range TJ +125 °C Storage Temperature Range TSTG -65 to +125 °C Operating Ambient Temperature Range Top -65 to +150 °C (Rate VR,Square Wave, 20 KHz) Non-Repetitive Peak Square Current (Surge Applied atRated Load Condition Halfware, Single Phase, 60Hz) 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 2/3 50 PF Rev.A 23-Apr-08 AVERAGEFOR WARDRECTIFIED 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) JUNCTIONCAP ACITANCE(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 REVERSE VOLTAGE(V) 10 FIG.3 Typcial Junction Capacitance FIG.2 Typical Forward Characteristics PEAKFOR WARDSURGECURRENT(AMP .) INSTANTANEOUSFOR WARDCURRENT(AMP .) FIG.1 Forward Current Derating Curve 30 25 20 15 10 5 0 1 100 10 NUMBEROF CYCLES AT60Hz FIG.4 Peak Forward Surge Current WEITRON http://www.weitron.com.tw 3/3 Rev.A 23-Apr-08