BY251 LUGUANG | Alldatasheet
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Dimensions in inches and (millimeters) DO-201AD F e a t u r e s /cuspopen High efficiency, Low VF /cuspopen High current capability /cuspopen High reliability /cuspopen High surge current capability /cuspopen Low power loss Mechanical Data /cuspopen Cases: Molded plastic /cuspopen Epoxy: UL 94V-0 rate flame retardant /cuspopen Polarity: Color band denotes cathode /cuspopen High temperature soldering guaranteed: 260oC/10 seconds/.375”,(9.5mm) lead lengths at 5 lbs., (2.3kg) tension /cuspopen Weight: 1.2 grams Maximum Ratings and Electrical Characteristics Rating at 25 o C ambient temperature unless otherwise specified. Single phase, half wave, 60 Hz, resistive or inductive load. For capacitive load, derate current by 20% Type Number Symbol BY251 BY252 BY253 BY254 BY255 Units Maximum Recurrent Peak Reverse Voltage VRRM 200 400 600 800 1300 V Maximum RMS Voltage VRMS 140 280 420 560 910 V Maximum DC Blocking Voltage VDC 200 400 600 800 1300 V Maximum Average Forward Rectified Current . 375 (9.5mm) Lead Length @TA = 75 o C I(AV) 3.0 A Peak Forward Surge Current, 8.3 ms Single Half Sine-wave Superimposed on Rated Load (JEDEC method ) IFSM 150 A Maximum Instantaneous Forward Voltage @ 3.0A VF 1.0 V Maximum DC Reverse Current @ T A=25 o C at Rated DC Blocking Voltage @ T A=125 o C IR 5.0 100 uA uA Maximum Full Load Reverse Current, Full Cycle Avera ge .375” (9.5mm ) Lead Len gth @TL=75℃ HTIR 30 uA Typical Junction Capacitance ( Note 1 ) Cj 40 pF Typical Thermal Resistance ( Note 2 ) RθJA 40 o C/W Operating Temperature Range T J -65 to +150 o C Storage Temperature Range T STG -65 to +150 o C Notes: 1. Measured at 1 MHz and Applied Reverse Voltage of 4.0 V D.C. 2. Mount on Cu-Pad Size 16mm x 16mm on P.C.B. BY251-BY255 3.0 AMP. Silicon Rectifiers http://www.luguang.cn mail:lge@luguang.cn
RATINGS AND CHARACTERISTIC CURVES (BY251 THRU BY255) FIG.4- TYPICAL JUNCTION CAPACITANCE PA C N OI T C N U J )Fp ( . E C N A T I CA 10050101 5 100 REVERSE VOLTAGE. (V) Tj=25 C0 FIG.1- MAXIMUM FORWARD CURRENT DERATING CURVE AVERAGE FORWARD CURRENT AMPERES25 0 50 75 100 125 150 175 AMBIENT TEMPERATURE. ( C) o Single Phase Half Wave 60Hz Resistive or Inductive Load 0.375" (9.5mm) Lead Length FIG.2- TYPICAL REVERSE CHARACTERISTICS 0 20 40 60 80 100 120 140 0.01 0.1 100 PERCENT OF RATED PEAK REVERSE VOLTAGE. (%) Tj=25 C0 Tj=125 C0 INSTANTANEOUS REVERSE CURRENT .( A ) FORWARD VOLTAGE. (V) FIG.5- TYPICAL FORWARD CHARACTERISTICS INSTANTANEOUS FORWARD CURRENT. (A) 0.01 100 0.03 0.1 Tj=25 C Pulse Width=300 s 1% Duty Cycle o FIG.3- MAXIMUM NON-REPETITIVE FORWARD SURGE CURRENT PER LEG PEAK FORWARD SURGE CURRENT. (A) 0 2 5 10 20 10050 150 120 NUMBER OF CYCLES AT 60Hz 8.3ms Single Half Sine Wave PER LEG. (JEDEC Method) Tj=Tj max. BY251-BY255 3.0 AMP. Silicon Rectifiers http://www.luguang.cn mail:lge@luguang.cn