BY254

DATA SHEET BY251 thru BY255 MEDIUM CURRENT PLASTIC RECTIFIER CURRENT VOLTAGE 200 to 1300 Volts FEATURES • High current capability. • Plastic package has Underwriters Laboratories Flammability Classification 94V-O • Void-free Plastic in DO-201AD package. • Exceeds environmental standards of MIL-S-19500/228 • Low leakage . .375(9.5) .285(7.2) 1.0(25.4)MIN. .052(1.3) .048(1.2) 3.0 Amperes DO-201AD Unit: inch(mm) • Hing current operation of 3Amperes at TA=95°C with no thermal runaway. MECHANICALDATA Terminals: Axial leads, solderable to MIL-STD-202,Method 208 Polarity: Color Band denotes cathode end Mounting Position: Any Weight: 0.04 ounce, 1.1 grams 1.0(25.4)MIN. Case: Molded plastic, DO-201AD .210(5.3) .188(4.8) MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Ratings at 25°C ambient temperature unless otherwise specified. Resistive or inductive load, 60Hz. PAR AMETER Maxi mum Recurrent Peak Reverse Voltage Maxi mum RMS Voltage Maxi mum D C Blocki ng Voltage Maxi mum Average Forward C urrent .375"(9.5mm) lead length at TA=95 O C Peak Forward Surge C urrent : 8.3ms si ngle half si ne-wave superi mposed on rated load(JED EC method) Maxi mum Forward Voltage TJ=25OC at 3.0A Maxi mum D C Reverse C urrent at TA=25OC Rated D C Blocki ng Voltage TA=100O C Typi cal Juncti on capaci tance (Note 1) Typi cal Thermal Resi stance(Note 2) Operati ng Juncti on and Storage Temperature Range SYMB OL VRRM VRMS VDC IAV IFSM VF B Y251 200 140 200 B Y252 400 280 400 B Y253 600 420 600 3.0 100 1.1 B Y254 800 560 800 B Y255 1300 910 1300 U N ITS V V V A A V . IR 5.0 1000 40 15 -55 to +150 O uA CJ RθJA TJ,TSTG pF C/W O C NOTES: 1. Measured at 1 MHz and applied reverse voltage of 4.0 volts. 2.Thermal resistance from junction to ambient. STAD-JAN.14.2004 P AGE . 1 INSTANTANEOUS REVERSE CURRENT, mA RATING AND CHARACTERISTIC CURVES 8.0 10 TA=100 C O AVERAGE FORWARD RECTIFIED CURRENT, AMPERES 7.0 1.0 6.0 5.0 4.0 3.0 0.1 TA=25 C O 2.0 1.0 TA=AMBIENT TEMPERATURE 0.375"(9.5mm) LEAD LENGTHTS P.C. BOARD MOUNTING RESISTIVE OR INDUCTIVE LOAD 0 0 25 50 75 100 125 150 175 200 0.01 0 20 40 60 80 100 120 140 AMBIENT TEMPERATURE, C O PERCENT OF RATED PEAK REVERSE VOLTAGE FORWARD DERATING CURVE TYPICAL REVERSE CHARACTERISTICS 100 100 JUNCTION CAPACITANCE, pF 10 10 MAXIMUM FORWARD CURRENT-1FM(Apk) 1.0 0.1 1 .1 10 100 REVERSE VOLTAGE, VOLTS TYPICAL JUNCTION CAPACITANCE 120 0 .01 0.6 0.8 1.0 1.2 1.4 1.6 1.8 FORWARD SURGE CURRENT, Apk AMPERES 8.3ms Single Half Since-Wave JEDEC Method 100 MAXIMUM FORWARD VOLTAGE,VOLTS TYPICAL FORWARD CHARACTERISTICS 80 60 40 20 0 1 10 100 NUMBER OF CYCLES AT 60HZ MAXIMUM OVEROLAD SURGE CURRENT STAD-JAN.14.2004 P AGE . 2