SF25

BL FEATURES GALAXY ELECTRICAL SF21- - - SF28 VOLTAGE RANGE: 50 --- 600 V CURRENT: 2.0 A SUPER FAST RECTIFIER Low cost Low leakage Low forward voltage drop High current capability Easily cleaned with alcohol,Isopropanol and similar solvents The plastic material carries U/L recognition 94V-0 DO - 15 MECHANICAL DATA Case:JEDEC DO--15,molded plastic Terminals: Axial lead ,solderable per MIL- STD-202,Method 208 Polarity: Color band denotes cathode Weight: 0.014 ounces,0.39 grams Mounting position: Any MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Ratings at 25 　ambient temperature unless otherwise specified. Single phase,half wave,60 Hz,resistive or inductive load. For capacitive load,derate by 20%. SF21 Maximum recurrent peak reverse voltage Maximum RMS voltage Maximum DC blocking voltage Maximum average forw ard rectified current 9.5mm lead length, @TA=75 SF22 100 70 100 SF23 SF24 150 105 150 200 140 200 2.0 SF25 SF26 SF27 SF28 UNITS 300 210 300 400 280 400 500 350 500 600 420 600 V V V A VRRM VRMS VDC IF(AV) 50 35 50 Peak forw ard surge current 8.3ms single half-sine-w ave superimposed on rated load @TJ=125 IFSM 50 A Maximum instantaneous forw ard voltage @ 2.0A Maximum reverse current @TA=25 VF IR trr CJ RθJA TJ TSTG 0.95 5.0 50.0 35 60 20 - 55 ----- + 125 - 55 ----- + 150 1.3 1.7 V A ns at rated DC blocking voltage @TA=125 Maximum reverse recovery time Typical junction capacitance Typical thermal resistance (Note1) (Note2) (Note3) 30 pF /W Operating junction temperature range Storage temperature range NOTE: 1. Measured with I F=0.5A, I R=1A, I rr=0.25A. www.galaxycn.com 2. Measured at 1.0MHZ and applied rev erse v oltage of 4.0V DC. 3. Thermal resistance f rom junction to ambient. Document Number 0264002 BLGALAXY ELECTRICAL 1. RATINGS AND CHARACTERISTIC CURVES F IG.1 -- TEST CIRCUIT DIAGRAM AND REV ERSE RECOVERY TIM E CHARACTERISTIC trr 50 N 1. 10 N 1. SF21 - - - SF28 + 0 .5 A D.U.T. (+) 25VDC (approx) (-) 1 NONINDUCTIVE PULSE GENERATOR (NOTE2) OSCILLOSCOPE (NOTE 1) 0 -0 .2 5 A -1 .0 A 1cm N OTES:1 .R ISE TIME = 7n s MAX.IN PU T IMPED AN C E = 1M .2 2p F. JJJJJ2.R ISE TIME =10 ns MAX.SOU R C E IMPED AN C E=5 0 . SE T TIM E BA SE FOR 10 ns/cm F IG.2 -- TYPICAL FORW ARD CHARACTERISTIC INSTANTANEOUS FORWARD CURRENT 100 F IG.3 -- FORW ARD DERATING CURVE z AVERAGE FORWARD CURRENT 3.0 2.5 Single Phase Half Wave 60HZ Resistive or Inductive Load 0.375"(9.5mm)Lead Length AMPERES SF 21~ SF 24 10 AMPERES 2.0 1.5 1.0 0.5 0 0 1 0.1 SF 25 ~S F2 SF 6 27 ~S F2 8 25 50 75 100 125 150 175 0.01 .4 Tj=25oC Pulse Width=300 s 1% Duty Cycle .6 .8 1.0 1.2 1.4 1.6 1.8 INSTA NTANE OUS FORW ARD VOLTAGE , VOLTS A M BIENT TE M P ERA TURE, F IG.4 -- TYPICAL JUNCTION CAPACITANCE F IG.5 -- PEAK FORW ARD SURGE CURRENT PEAK FORWARD SURGE CURRENT JUNCTION CAPACITANCE,pF 200 100 60 40 20 10 6 4 TJ=25 SF25 - SF28 SF21 - SF24 70 60 50 AMPERES 8.3m Single Half s Sine-W ave 40 30 20 10 0 1 5 10 50 100 2 1 0.1 0.2 0.4 1 2 4 10 20 40 100 REV ERS E V OLTA GE ,VOLTS N UM B ER OF CYCLES AT 60Hz www.galaxycn.com Document Number 0264002 BLGALAXY ELECTRICAL 2.