SF21

S F21 T HRU S F28 2 .0 AMPS. Super Fast Rectifiers V oltage Range 5 0 to 600 Volts C urrent 2 .0 Amperes F eatures L ow forward voltage drop H igh current capability H igh reliability H igh surge current capability D O-15 M echanical Data C ases: Molded plastic E poxy: UL 94V-O rate flame retardant L ead: Axial leads, solderable per MIL-STD-202, Method 208 guaranteed P olarity: Color band denotes cathode end H igh temperature soldering guaranteed: 2 60 oC/10 seconds/.375”,(9.5mm) lead lengths at 5 lbs., (2.3kg) tension W eight: 0.40 gram D imensions in inches and (millimeters) M aximum Ratings and Electrical Characteristics R ating at 25 ℃ ambient temperature unless otherwise specified. Single phase, half wave, 60 Hz, resistive or inductive load. For capacitive load, derate current by 20% S ymbol S F S F S F S F T ype Number 21 22 23 24 M aximum Recurrent Peak Reverse Voltage M aximum RMS Voltage M aximum DC Blocking Voltage M aximum Average Forward Rectified Current .375 (9.5mm) Lead Length @T A = 5 5 ℃ P eak Forward Surge Current, 8.3 ms Single Half Sine-wave Superimposed on Rated Load (JEDEC method ) M aximum Instantaneous Forward Voltage @ 2 .0A M aximum DC Reverse Current @ T A=25 ℃ at Rated DC Blocking Voltage @ T A=100 ℃ M aximum Reverse Recovery Time (Note 1) T ypical Junction Capacitance (Note 2) T ypical Thermal Resistance (Note 3) SF 25 SF 26 SF 27 SF 28 U nits V V V A A V RRM V RMS V DC I(AV) IFSM VF IR T rr Cj R θ JA TJ 50 35 50 1 00 1 50 2 00 3 00 4 00 5 00 6 00 7 0 1 05 1 40 2 10 2 80 3 50 4 20 1 00 1 50 2 00 3 00 4 00 5 00 6 00 2 .0 50 0 .95 5 .0 100 35 40 30 1.3 1.7 V uA uA nS pF ℃ /W ℃ ℃ 65 O perating Temperature Range -65 to +125 S torage Temperature Range T STG -65 to +150 N otes: 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 -