BY251 CHENG-YI | Alldatasheet
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MEDIU M CURRENT PLASTIC R ECTIF IERMEDIU M CURRENT PLASTIC R ECTIF IER Maximum Recurrent Peak Reverse Voltage VRRM VRMS VDC I(AV) IFSM VF TJ TRR CJ TJ A TSTG IR Maximum RMS Voltage Maximum DC Blocking Voltage Operating Junction Temperature Range Storage Temperature Range Peak Forward Surge Current 8.3 ms single half sine-wave superimposed on rated load (JEDEC method) Maximum Average Forward Rectified Current .375", (9.5mm) lead lengths at T =95 CA Maximum Instantaneous Forward Voltage T =25 CJ at 3.0A T =100 CJ Maximum DC Reverse Current T =25 CA at Rated DC Blocking Voltage T =100 CA Typical Junction Capacitance (Note 2) T =25 CJ Typical Reverse Recovery Time (Note 3) Typical Thermal Resistance (Note1) BY251 BY252 BY253 BY254 BY255 UNITS 200 400 600 800 1300 V V V pF C C / W C A A V 140 280 420 560 910 200 400 600 800 500 5.0 28.0 15.0 2.5 -55 to +150 -55 to +150 3.0 100.0 1.1 1.0 1300 MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS0 Ratings at 25 C ambient temperature unless otherwise specified. 60Hz, resistive or inductive load. For capacitive load, derate current by 20%. 2. Measured at 1 MHz and applied reverse voltage of 4.0 volts. VOLTAGE RANGE-200 TO 1300 Volts CURRENT -3.0 Amperes FEATURE High surge current capability Plastic package has underwriters laboratory Flammability classification 94V-O Low leakage Void-free molded in DO-201AD plastic package High current operation of 3 Amperse0 at TA=95 C with no thermal runaway Exceeds enviromental standard of MIL-STD- MECHANICAL DATA Case:JEDEC D0-201AD molded plastic Trminals:plated axials leads ,solderable per MIL-STD-750, Method 2026 Polarity:Color band denotes cathode Weight:0.04 ounce, 1.1gram Mounting Position:Any DO-201AD
RATING AND CHARACTERISTICS CURVES BY251 THRU BY255 BY251 thru BY255 MEDIU M CURRENT PLASTIC R ECTIF IERMEDIU M CURRENT PLASTIC R ECTIF IER AVERAGE FORWARD CURRENT AMPERES TEMPERATURE, C Fig.1 - FORWARD CURRENT DERATING CURVE 1=.25"(6.3mm) 1=.50"(12.7mm) 1=.301"(.79min) TJ=Both Leads to Heat Sink with Lengths (f) AS shown T =Ambient TemperatureA 0.275(9.5mm) Lead Lengths P.C. Board mounting Resistive or inductive Load 40 60 80 100 120 140 160 180 Fig.2 - MAXIMUM PEAK FORWARD SURGE CURRENT PEAK FORWARD SURGE CURRENT, (A) NUMBER OF CYCLES AT 60 Hz 8.3ms Single Half Sine Wave JEDEC Method NON-REPETIVE REPETIVE T =150CJ 100 100 100 100 200 INSTANTANEOUS FORWARD CURRENT, (A) Fig.3 - TYPICAL INSTANT ANEOUS FORWARD CHARACTERISTICS INSTANTANEOUS FORWARD VOLTAGE, (V) 1.00.80.6 .01 .03 0.1 0.3 1.0 3.0 100 Pulse Width-300 s 2% DUTY CYCLE T =25CJ T =25CJ f=1MHz Visg=50m Vp-p Fig.4 - TYPICAL JUNCTION CAPACIT ANCE REVERSE VOLTAGE(V) CAPACITANCE-pF Fig.5 - TYPICAL REVERSE CHARACTERISTICS INSTANTANEOUS REVERSE CURRENT, (mA) PERCENT OF RATED PEAK REVERSE VOLTAGE, (%) 200 40 14060 80 100 120 0.1 1.0 .01 T =25CA T =100CA