B345A SURFACE MOUNT SCHOTTKY BARRIER RECTIFIERS REVERSE VOLTAGE - FORWARD CURRENT - 45 Volts 3.0 Amperes FEATURES * For surface mounted applications SMA * Metal-Semiconductor junction with guard ring * 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 application * IEC 61000-4-2, level 4 (ESD). > 15KV (air) MECHANICAL DATA * Case: Molded plastic * Polarity: Indicated by cathode band * Weight:0.002 ounces, 0.064 grams MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Ratings at 25C ambient temperature unless otherwise specified. CHARACTERISTICS SYMBOL B345A UNIT Maximum Repetitive Peak Reverse Voltage VRRM 45 V Maximum RMS Voltage VRMS 32 V Maximum DC Blocking Voltage VDC 45 A IAV 3.0 A IFSM 80 A Maximum Average Forward Rectified Current @TC=80C Peak Forward Surge 8.3ms single half sine-wave superimposed on rated load(JEDEC METHOD) Maximum Instantaneous Forward Voltage @IF=3.0A;Tj=25C VF 0.55 V Maximum DC Reverse Current at Rated DC Blocking Voltage @VR=45V;Tj=25C @VR=45V;Tj=100C IR 0.15 25 mA Cj 200 pF RJL 24 C/W Typical Junction Capacitance (Note 1) Typical Thermal Resistance (Note 2) Operating Junction Temperature Range Storage Temperature Range Tj -55 to +125 C TSTG -55 to +150 C Note : (1) Measured at 1.0MHz and applied reverse voltage of 4.0V DC... (2) Thermal Resistance Junction to Lead Rev.3, Jul-2012, KSHA20 RATING AND CHARACTERISTIC CURVES B345A FIG.2- MAXIMUM NON-REPETITIV E SURGE CURRE NT 80 3 70 PEAK FORWARD SURGE CURRENT , (A) AVERAGE FORWARD CURRENT, (A) FIG.1- FORWARD CURRENT DERATING CURVE 3.5 2.5 2 1.5 Mounted on glass-epoxy substrate with 1oz/ft2_7x5 mm copper pad. 1 0.5 60 50 40 30 20 8.3ms Single Half Sine-Wave 10 0 0 0 25 50 75 100 1 125 10 FIG.4- TYPICAL FORWARD CHARACTERISTICS FIG.3- TYPICAL JUNCTION CAPACITANCE 10 INST ANTANEOUS FORWARD CURRENT, (A) CAPACITANCE, (pF) 1000 100 Tj=25, f=1MHz 10 Tj=125 1 Tj=25 0.1 Tj=25 PULSE WIDTH 300us 2% Duty Cycle 0.01 1 10 100 0 REVERSE VOLT AGE, VOLTAGES 0.1 0.2 0.3 0.4 0.5 0.6 0.7 INSTANTANEOUS FORWARD VOLTAGE, VOLT S FIG.5- TYPICAL REVE RSE CHARACTERISTICS FIG.6- DC REV ERSE VOLTAGE DE RATING CURVE 120 PERCENT OF DC REVERSE VOLTAGE, (%) 100 INSTANT ANEOUS REVERSE CURRENT, (mA) 100 NUMBER OF CYCLES AT 60Hz CASE T EMPERATURE, ( ) 10 Tj=125 1 0.1 0.01 Tj=25 100 80 60 Mounted on glass-epoxy substrate with 1oz/ft2_7x5 mm copper pad. Rth j-a in Still-air =65/W 40 20 0 0.001 10 30 50 70 90 PERCENT OF RATED PEAK REVERSE VOLTAGE, (%) 110 0 25 50 75 AMBIENT TEMPERATURE, ( ) 100 125 Legal Disclaimer Notice B345A Important Notice and Disclaimer LSC reserves the right to make changes to this document and its products and specifications at any time without notice. Customers should obtain and confirm the latest product information and specifications before final design, purchase or use. LSC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does LSC assume any liability for application assistance or customer product design. LSC does not warrant or accept any liability with products which are purchased or used for any unintended or unauthorized application. No license is granted by implication or otherwise under any intellectual property rights of LSC. LSC products are not authorized for use as critical components in life support devices or systems without express written approval of LSC.