WEITRON B140LB Low VF Surface Mount Schottky Barrier Rectifiers REVERSE VOLTAGE 40Volts FORWARD CURRENT 1.0Ampere Features: *Low Surface Mounted Applications *Metal-Semiconductor Junction with Guardring *Epitaxial Construction *Very Low Forward Voltage Drop *High Current Capability *Plastic Material Has UL Flammability Classification 94V-0 *For Use in Low Voltage, High Frequency Inverters, Free Wheeling, and Polarity Protection Applications SMB(DO-214AA) Mechanical Data *Case : Molded Plastic *Polarity :Indicated By Cathode Band *Weight : 0.003 ounces, 0.093 grams SMB Outline Dimensions Unit:mm Dim A B C D E G H J WEITRON http://www.weitron.com.tw SMB Min 3.30 4.06 1.96 0.15 5.00 0.10 0.76 2.00 Max 3.94 4.80 2.21 0.31 5.59 0.20 1.52 2.62 B140LB WE IT R ON Maximum Ratings and Electrical Characteristics Rating 25 C Ambient Temperature Unless Otherwise Specified. Single Phase Half Wave, 60Hz , Resistive or Inductive Load. For Capacitive Load, Derate Current by 20%. Symbol B140LB Unit Maximum Recurrent Peak Reverse Voltage VRRM 40 V Maximum RMS Voltage VRMS 28 V Maximum DC Blocking Voltage VDC 40 V 1.0 A 40 A Characteristics Maximum Average Forward IF (AV) Rectified Current @TC=100 C Peak Forward Surge Current, 8.3 ms Single Half Sine-Wave IFSM Superimposed on Rated Load (JEDEC Method) Maximum Instantaneous @ T j=25 C VF Forward Voltage @IF=1.0A @ T j=100 C Maximum DC Reverse Current @Tj=25 C IR At Rated DC Blocking Voltage @Tj=100 C Typical Junction Capacitance (Note 1) Typical Thermal Resistance (Note 2) Operating Temperature Range Storage Temperature Range WEITRON 0.35 1.0 25 V mA PF CJ RAJC 100 35 C/W TJ TSTG -55 to+125 C -55 to+150 C NOTES:1.Measured at 1.0MHz applied reverse voltage of 4.0V DC. 2.Thermal Resistance Junction to case. h t t p : // w w w . w e i t r o n . c o m . t w 0.38 B140LB WE IT R ON 1.00 0.75 0.50 0.25 0 SINGLE PHASE HALF WAVE 60Hz RESISTIVE OR INDUCTIVE LOAD 20 40 60 80 100 120 140 FIG.2-MAXIMUM NON-REPETITIVE SURGE CURRENT PEAK FORWARD SURGE CURRENT, AMPERES AVERAGE FORWARD CURRENT AMPERES FIG1.-FORWARD CURRENT DERATION CURVE 1.25 50 40 30 20 Pulse Width 8.3ms Single Half-Sine-Wave (JEDEC METHOD) 10 0 1 2 FIG.3-TYPICAL FORWARD CHARACTERISTICS 20 50 100 FIG4.-TYPICAL JUNCTION CAPACITANCE 1.0 100 TJ=25 C PLUSEWIDTH 300us 0.1 10 1000 CAPACITANCE, (PF) INSTANTANEOUS FORWARD CURRENT, (A) 10 5 NUMBER OF CYCLES AT 60HZ CASE TEMPERATURE C 0 0.2 0.4 0.6 0.8 TJ=25 C F=1MHZ 10 1.0 0.1 INSTANTANEOUS FORWARD VOLTAGE, (VOLTS) FIG5.-TYPICAL REVERSE CHARACTERISTICS INSTANTANEOUS REVERSE CURRENT. (mA) 100 10 http://www.weitron.com.tw. TJ =100 C 1.0 0.1 TJ =25 C 0.01 0.001 WEITRON TJ =125 C 0 20 40 60 80 100 120 140 PERCENT OF RATED PEAK REVERSE VOLTAGE, (%) 1.0 4.0 10.0 REVERSE VOLTAGE, (VOLTS) 100