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| SF21 THRU SF28 2.0 AMPS. Super Fast Rectifiers Voltage Range 50 to 600 Volts Current 2.0 Amperes Features Low forward voltage drop High current capability High reliability High surge current capability DO-15 Mechanical Data Cases: Molded plastic Epoxy: UL 94V-O rate flame retardant Lead: Axial leads, solderable per MIL-STD-202, Method 208 guaranteed Polarity: Color band denotes cathode end High temperature soldering guaranteed: 260 oC/10 seconds/.375",(9.5mm) lead lengths at 5 lbs., (2.3kg) tension Weight: 0.40 gram Dimensions in inches and (millimeters) Maximum Ratings and Electrical Characteristics Rating at 25ambient temperature unless otherwise specified. Single phase, half wave, 60 Hz, resistive or inductive load. For capacitive load, derate current by 20% Symbol SF SF SF SF Type Number 21 22 23 24 Maximum Recurrent Peak Reverse Voltage Maximum RMS Voltage Maximum DC Blocking Voltage Maximum Average Forward Rectified Current .375 (9.5mm) Lead Length @T A = 55 Peak Forward Surge Current, 8.3 ms Single Half Sine-wave Superimposed on Rated Load (JEDEC method ) Maximum Instantaneous Forward Voltage @ 2.0A Maximum DC Reverse Current @ T A=25at Rated DC Blocking Voltage @ T A=100 Maximum Reverse Recovery Time (Note 1) Typical Junction Capacitance (Note 2) Typical Thermal Resistance (Note 3) SF 25 SF 26 SF 27 SF 28 Units V V V A A V RRM V RMS V DC I(AV) IFSM VF IR Trr Cj R JA TJ 50 35 50 100 150 200 300 400 500 600 70 105 140 210 280 350 420 100 150 200 300 400 500 600 2.0 50 0.95 5.0 100 35 40 30 1.3 1.7 V uA uA nS pF /W 65 Operating Temperature Range -65 to +125 Storage Temperature Range T STG -65 to +150 Notes: 1. Reverse Recovery Test Conditions: IF=0.5A, IR =1.0A, IRR=0.25A 2. Measured at 1 MHz and Applied Reverse Voltage of 4.0 V D.C. 3. Mount on Cu-Pad Size 10mm x 10mm on PCB. - 228 - RATINGS AND CHARACTERISTIC CURVES (SF21 THRU SF28) FIG.1- REVERSE RECOVERY TIME CHARACTERISTIC AND TEST CIRCUIT DIAGRAM trr +0.5A (-) DUT (+) 50Vdc (approx) (-) PULSE GENERATOR (NOTE 2) 1W NON INDUCTIVE OSCILLOSCOPE (NOTE 1) (+) 0 -0.25A AVERAGE FORWARD CURRENT. (A) 50W NONINDUCTIVE 10W NONINDUCTIVE FIG.2- MAXIMUM AVERAGE FORWARD CURRENT DERATING 3.0 2.5 2.0 1.5 1.0 0.5 0 0 25 50 75 100 125 150 175 o Single Phase Half Wave 60Hz Resistive or Inductive Load 0.375" (9.5mm) Lead Length NOTES: 1. Rise Time=7ns max. Input Impedance= 1 megohm 22pf 2. Rise Time=10ns max. Sourse Impedance= 50 ohms -1.0A 1cm SET TIME BASE FOR 5/ 10ns/ cm AMBIENT TEMPERATURE. ( C) FIG.3- TYPICAL REVERSE CHARACTERISTICS 10000 FIG.4- TYPICAL FORWARD CHARACTERISTICS 100 INSTANTANEOUS REVERSE CURRENT. ( A) INSTANTANEOUS FORWARD CURRENT. (A) 10 100 1 Tj=100 0C 10 0.1 1 Tj=25 0C SF 21 ~S F2 4 1000 26 SF 5~ F2 S 28 SF 7~ F2 S Tj=25oC Pulse Width=300 s 1% Duty Cycle 0.1 0 20 40 60 80 100 120 140 PERCENT OF RATED PEAK REVERSE VOLTAGE. (%) 0.01 0.4 0.6 0.8 1.0 1.2 1.4 FORWARD VOLTAGE. (V) 1.6 1.8 FIG.5- MAXIMUM NON-REPETITIVE FORWARD SURGE CURRENT 60 150 FIG.6- TYPICAL JUNCTION CAPACITANCE PEAK FORWARD SURGE CURRENT. (A) JUNCTION CAPACITANCE.(pF) 50 8.3ms Single Half Sine Wave JEDEC Method 40 125 100 Tj=25 0C 30 75 SF 21 ~S F2 20 50 4 SF 25 25 ~S 10 0 1 2 5 10 20 50 100 NUMBER OF CYCLES AT 60Hz F2 8 0 0.1 0.5 1 2 5 10 20 50 100 200 500 1000 REVERSE VOLTAGE. (V) - 229 - |
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