BY254

BY251 thru BY255 MEDIUM CURRENT PLASTIC RECTIFIER CHENG- YI CHENGELECTRONIC VOLTAGE RANGE-200 TO 1300 Volts CURRENT -3.0 Amperes DO-201AD 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 Amperse at TA=950C with no thermal runaway Exceeds enviromental standard of MIL-STD19500/228 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 MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Ratings at 250C ambient temperature unless otherwise specified. 60Hz, resistive or inductive load. For capacitive load, derate current by 20%. BY251 BY252 400 280 400 BY253 600 420 600 3.0 BY254 800 560 800 BY255 1300 910 1300 UNITS V V V A Maximum Recurrent Peak Reverse Voltage Maximum RMS Voltage Maximum DC Blocking Voltage Maximum Average Forward Rectified Current .375", (9.5mm) lead lengths at T A=95 C 0 VRRM VRMS VDC I(AV) 200 140 200 Peak Forward Surge Current 8.3 ms single half sine-wave superimposed on rated load (JEDEC method) Maximum Instantaneous Forward Voltage TJ =25 C at 3.0A T J =100 C 0 0 IFSM 100.0 A VF IR 1.1 1.0 5.0 500 28.0 2.5 15.0 -55 to +150 0 V Maximum DC Reverse Current TA=25 C at Rated DC Blocking Voltage TA =100 C 0 0 Typical Junction Capacitance (Note 2) TJ =25 C 0 CJ TRR T JA TJ pF Typical Reverse Recovery Time (Note 3) Typical Thermal Resistance (Note1) Operating Junction Temperature Range Storage Temperature Range C/W 0 C C -55 to +150 TSTG Notes : 1. Thermal Resistance from Junction to applied at ambient .375" (9.5mm) lead lengths, P.C. Board mounted. 2. Measured at 1 MHz and applied reverse voltage of 4.0 volts. 3. Reverse Recovery Test Conditions : IF=0.5A, I R=1.0A, Irr=0.25A. 0 BY251 thru BY255 MEDIUM CURRENT PLASTIC RECTIFIER CHENG- YI CHENGELECTRONIC RATING AND CHARACTERISTICS CURVES BY251 THRU BY255 Fig.2 - MAXIMUM PEAK FORWARD SURGE CURRENT 200 Fig.1 - FORWARD CURRENT DERATING CURVE 8 1=.25"(6.3mm) 1=.301"(.79min) TJ=Both Leads to Heat Sink with Lengths (f) AS shown PEAK FORWARD SURGE CURRENT, (A) 8.3ms Single Half Sine Wave JEDEC Method 100 50 NON-REPETIVE 0 TJ=150C 7 AVERAGE FORWARD CURRENT AMPERES 6 1=.50"(12.7mm) 5 4 3 2 1 0 40 60 80 100 120 0 REPETIVE 10 1 5 10 50 100 TA=Ambient Temperature 0.275(9.5mm) Lead Lengths P Board mounting .C. Resistive or inductive Load NUMBER OF CYCLES AT 60 Hz 140 160 180 TEMPERATURE, C Fig.4 - TYPICAL JUNCTION CAPACITANCE 100 CAPACITANCE-pF 50 Fig.3 - TYPICAL INSTANTANEOUS FORWARD CHARACTERISTICS 100 10 5 0 TJ=25C f=1MHz Visg=50m Vp-p INSTANTANEOUS FORWARD CURRENT, (A) 1 30 5 10 50 100 REVERSE VOLTAGE(V) 10 3.0 Fig.5 - TYPICAL REVERSE CHARACTERISTICS INSTANTANEOUS REVERSE CURRENT, (mA) 10 1.0 0 TJ=25C Pulse Width-300 s 2% DUTY CYCLE 0.3 0 TA=100C 1.0 0.1 0.1 0 TA=25C .03 .01 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 INSTANTANEOUS FORWARD VOLT AGE, (V) .01 0 20 40 60 80 100 120 140 PERCENT OF RATED PEAK REVERSE VOLTAGE, (%)