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| CHENMKO ENTERPRISE CO.,LTD SURFACE MOUNT SCHOTTKY BARRIER RECTIFIER VOLTAGE RANGE 40 Volts CURRENT 3.0 Amperes FEATURES * Plastic package has Underwriters Laboratory Flammability Classification 94V-0 * For surface mounted applications * Low profile package * Built-in strain relief * Metal silicon junction, majority carrier conduction * Low power loss, high efficiency * High current capability, low forward voltage drop * High surge capability * For use in low voltage high frequency inverters, free wheeling, and polarity protection applications * High temperature soldering guaranteed : 260oC/10 seconds at terminals SSM34APT SMA-S + 0.2 2.6 - 0.2 + 0.2 1.4 - 0.2 + 0.2 3.5 - 0.2 + 0.02 0.5 - 0.02 MECHANICAL DATA Case: JEDEC SMA-S molded plastic Terminals: Solder plated, solderable per MIL-STD-750, Method 2026 Polarity: Color band denotes cathode end Weight: 0.002 ounce 0.064 gram 0.975 + 0.1 - 0.1 + 0.02 0.2 - 0.02 + 0.02 1.08 - 0.02 MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Ratings at 25oC ambient temperature unless otherwise specified. Single phase, half wave, 60 HZ, resistive or inductive load. For capacitive load, derate current by 20%. + 0.2 4.5 - 0.2 Dimensions in millimeters SMA-S MAXIMUM RATINGES ( At TA = 25oC unless otherwise noted ) RATINGS Maximum Recurrent Peak Reverse Voltage Maximum RMS Voltage Maximum DC Blocking Voltage Maximum Average Forward Rectified Current Peak Forward Surge Current 8.3 ms single half sine-wave superimposed on rated load (JEDEC method) Typical Junction Capacitance (Note 2) (SEE FIG.4) Typical Thermal Resistance (Note 1) Operating Temperature Range Storage Temperature Range SYMBOL VRRM VRMS VDC IO IFSM CJ R JL SSM34APT 40 28 40 3.0 80 250 18 -65 to +125 -65 to +150 UNITS Volts Volts Volts Amps Amps pF o C/W o o TJ TSTG C C ELECTRICAL CHARACTERISTICS ( At TA = 25oC unless otherwise noted ) CHARACTERISTICS @ IF = 1.0A Maximum Instantaneous Forward Voltage @ IF = 3.0A Maximum Average Reverse Current at Rated DC Blocking Voltage @ TA = 25oC @ TA = 100oC IR 30 mAmps 2001-6 VF 0.50 0.5 mAmps SYMBOL SSM34APT 0.38 Volts UNITS NOTES : 1. Thermal Resistance ( Junction to Lead ) : PC Board Mounted on 0.31 X 0.31" ( 8 X 8mm ) copper pad area. 2. Measured at 1.0 MHZ and applied reverse voltage of 4.0 volts. RATING CHARACTERISTIC CURVES ( SSM34APT ) INSTANTANEOUS FORWARD CURRENT, ( A ) FIG. 1 - TYPICAL FORWARD CURRENT DERATING CURVE AVERAGE FORWARD CURRENT, (A) 3.0 2.5 2.0 1.5 1.0 0.5 0 0 25 50 75 100 125 o FIG. 2 - INSTANTANEOUS FORWARD CURRENT, (A) 20 10 1.0 Single Half Wave 60HZ Resistive or Inductive Load 150 175 0.1 TJ =25oC Pulse Width=300us 1% Duty Cycle .2 .3 .4 .5 .6 .7 .8 .9 LEAD TEMPERATURE, ( C ) FIG. 3 - TYPICAL REVERSE CHARACTERISTICS 50 INSTANTANEOUS REVERSE CURRENT, (mA) 20 10 5 2 1 .5 .2 .10 .05 .02 0 5 10 15 20 25 INSTANTANEOUS REVERSE VOLTAGE, (V) 30 C TJ = 100 o INSTANTANEOUS FORWARD VOLTAGE,(V) FIG. 4 - MAXIMUM NON-REPETIVE FORWARD SURGE CURRENT 120 o C TJ = 125 PEAK FORWARD SURGE CURRETN(A) 100 8.3ms Single Half Sine-Wave (JEDEC Method) 80 o TJ = 75 C 60 o C TJ = 50 40 20 0 1 2 5 10 20 50 NUMBER OF CYCLES AT 60 Hz 100 FIG. 5 - TYPICAL JUNCTION CAPACITANCE 1000 JUNCTION CAPACITANCE, ( pF ) TJ =25oC 100 10 .1 .4 1.0 4 10 40 80 REVERSE VOLTAGE, ( V ) |
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