BY254Z

BL FEATURES L ow leakage GALAXY ELECTRICAL BY251(Z) - - - BY255(Z) VOLTAGE RANGE: 200 --- 1300 V CURRENT: 3.0 A PLASTIC SILICON RECTIFIER L ow cost Diffused junction L ow forward voltage drop High current capability Easily cleaned witn Freon,Alcohol,lsopropanol and similar solvents The plastic material carries U/L recognition 94V-0 D O - 27 MECHANICAL DATA Case:JEDEC DO-27,molded plastic Terminals: Axial lead ,solderable per MIL- STD-202,Method 208 Polarity: Color band denotes cathode Weight: 0.041 ounces, 1.15 grams Mounting position: Any MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Ratings at 25 a mbient temperature unless otherwise specified. Single phase,half wave,60 Hz,resistive or inductive load. For capacitive load,derate by 20%. BY 251 Maximum recurrent peak reverse voltage Maximum RMS voltage Maximum DC blocking voltage Maximum average forw ard rectified current 9.5mm lead length, @TA =75 BY 252 400 280 400 BY 253 600 420 600 3.0 BY 254 800 560 800 BY 255 1300 910 1300 UNITS V V V A VRRM VRMS VDC IF(AV) 200 140 200 Peak forw ard surge current 8.3ms single half-sine-w ave superimposed on rated load @TJ =125 IFSM 100.0 A Maximum instantaneous forw ard voltage @ 3.0 A Maximum reverse current at rated DC blocking voltage Typical junction capacitance Typical thermal resistance @TA=25 @TA=100 (Note1) (Note2) VF IR CJ RθJA TJ TSTG 1.1 10.0 100.0 35 20 - 55 ---- + 150 - 55 ---- + 150 V A pF /W Operating junction temperature range Storage temperature range 2. Thermal resistance f rom junction to ambient. NOTE: 1. Measured at 1.0MHz and applied rev erse v oltage of 4.0V DC. www.galaxycn.com Document Number 0260014 BLGALAXY ELECTRICAL 1. RATINGS AND CHARACTERISTIC CURVES FIG.1 -- TYPICAL FORWARD CHARACTERISTICS INSTANTANEOUS FORWARD CURRENT, BY251(Z)- - -BY255(Z) FIG.2 -- TYPICAL CURRENT DERATING CURVE 10 4 2 AVERAGE FORWARD CURRENT AMPERES 100 4 3 AMPERES 1.0 0.4 0.2 0.1 0.06 0.04 0.02 0.01 0.6 0.8 1.0 1.2 1 .4 1.6 T J =25 P ulse W idth=3 00uS 2 1 Single Phase Half Wave 60HZ Resistive or Inductive Load 0 0 25 50 75 100 125 150 FORWARD VOLTAGE, VOLTS AMBIENT TEMPERATURE, FIG.3 -- MAXIMUM NON-REPETITIVE FORWARD SURGE CURRENT FIG.4 -- TYPICAL JUNCTION CAPACITANCE PEAK FORWARD SURGE CURRENT 100 JUNCTION CAPACITANCE,pF 100 60 40 20 10 f=1MHz TJ=25 TJ=125℃ 8.3ms Single Half Sine-Wave AMPERES 4 2 1 .1 .2 .4 1.0 2 4 10 20 40 100 0 1 2 4 8 10 20 40 60 80 100 NUMBER OF CYCLES AT 60Hz REVERSE VOLTAGE, VOLTS www.galaxycn.com Document Number 0260014 BL GALAXY ELECTRICAL 2. RATINGS AND CHARACTERISTIC CURVES FIG.5 -- TYPICAL REVERSE CHARACTERISTICS REVERSE LEAKAGE CURRENT, MICRO AMPERES BY251(Z) - - - BY255(Z) 100 10 　　　　 TJ=125 C 0 1.0 　　　　 TJ=125 C 0 0.1 .01 0 20 40 60 80 100 120 140 PERCENT OF RATED PEAK REVERASE VOLTAGE, % www.galaxycn.com Document Number 0260014 BLGALAXY ELECTRICAL 3.