DL4933 - DL4937 Surface Mount Fast Recovery Rectifiers MELF (Plastic) PRV : 50 - 600 Volts Io : 1.0 Ampere Cathode Mark φ 0.102 (2.6) FEATURES : 0.094 (2.4) 0.022(0.55) * High current capability * * * * * * 0.205(5.2) 0.189(4.8) High surge current capability High reliability Low reverse current Low forward voltage drop Fast switching for high efficiency Pb / RoHS Free Dimensions in inches and ( millimeters ) MECHANICAL DATA : * Case : Molded plastic * Terminals : Plated Terminals, solderable per MIL-STD-750 Method 2026 * Polarity : Color band denotes cathode end * Mounting position : Any * Weight : 0.116 gram MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Rating at 25 °C ambient temperature unless otherwise specified. Single phase, half wave, 60 Hz, resistive or inductive load. For capacitive load, derate current by 20%. RATING SYMBOL DL4933 DL4934 DL4935 DL4936 DL4937 UNIT Maximum Recurrent Peak Reverse Voltage VRRM 50 100 200 400 600 V Maximum RMS Voltage VRMS 35 70 140 280 420 V Maximum DC Blocking Voltage VDC 50 100 200 400 600 V Maximum Average Forward Current , Ta = 55°C IF(AV) 1.0 A Maximum Peak Forward Surge Current, 8.3ms Single half sine wave Superimposed on rated load (JEDEC Method) IFSM 30 A Maximum Peak Forward Voltage at IF = 1.0 Amp. VF 1.2 V Maximum DC Reverse Current Ta = 25 °C IR 5.0 µA at Rated DC Blocking Voltage Ta = 100 °C IR(H) 100 µA Maximum Reverse Recovery Time ( Note 1 ) Trr 150 ns Typical Junction Capacitance ( Note 2 ) CJ 15 pf Junction Temperature Range TJ - 65 to + 150 °C Storage Temperature Range TSTG - 65 to + 150 °C Notes : ( 1 ) Reverse Recovery Test Conditions : IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A. ( 2 ) Measured at 1.0 MHz and applied reverse voltage of 4.0 VDC Page 1 of 2 Rev. 02 : March 24, 2005 RATING AND CHARACTERISTIC CURVES ( DL4933 - DL4937 ) FIG.1 - REVERSE RECOVERY TIME CHARACTERISTIC AND TEST CIRCUIT DIAGRAM 50 Ω Trr 10 Ω + 0.5 A D.U.T. + 0 PULSE GENERATOR ( NOTE 2 ) 50 Vdc (approx.) 1Ω - 0.25 A OSCILLOSCOPE ( NOTE 1 ) - 1.0 A SET TIME BASE FOR 50/100 ns/cm NOTES : 1. Rise Time = 7 ns max., Input Impedance = 1 megaohm, 22 pF. 1 cm 2. Rise time = 10 ns max., Source Impedance = 50 ohms. 3. All Resistors = Non-inductive Types. FIG.3 - MAXIMUM NON-REPETITIVE PEAK FORWARD SURGE CURRENT 30 1.0 PEAK FORWARD SURGE CURRENT, AMPERES AVERAGE FORWARD OUTPUT CURRENT, AMPERES FIG.2 - DERATING CURVE FOR OUTPUT RECTIFIED CURRENT 0.8 0.6 0.4 0.2 8.3 ms SINGLE HALF SINE WAVE Ta = 50 °C 24 18 12 6 60Hz RESISTIVE OR INDUCTIVE LOAD 0 0 0 25 50 75 100 125 150 175 1 2 AMBIENT TEMPERATURE, ( °C) 20 10 Pulse Width = 300 µs 2% Duty Cycle TJ = 25 °C 0.1 0.01 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 FORWARD VOLTAGE, VOLTS Page 2 of 2 6 10 20 40 60 100 2.0 FIG.5 - TYPICAL REVERSE CHARACTERISTICS REVERSE CURRENT, MICROAMPERES FORWARD CURRENT, AMPERES FIG.4 - TYPICAL FORWARD CHARACTERISTICS 1.0 4 NUMBER OF CYCLES AT 60Hz 10 TJ = 100 °C 1.0 0.1 TJ = 25 °C 0.01 0 20 40 60 80 100 120 140 PERCENT OF RATED REVERSE VOLTAGE, (%) Rev. 02 : March 24, 2005