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| BY251 THRU BY255 MEDIUM CURRENT PLASTIC RECTIFIER VOLTAGE - 200 to 1300 Volts CURRENT - 3.0 Amperes FEATURES l Exce High surge current capability l Plastic package has Underwriters Laboratory Flammability Classification 94V-O l Low leakage l Void-free molded in DO-201AD plastic package l High current operation of 3 Amperes at TA=95 J l with no thermal runaway eds environmental standards of MIL-S-19500/228 DO-201AD MECHANICAL DATA Case: JEDEC DO-201AD Molded plastic Terminals: Plated axial leads, solderable per MIL-STD-750, Method 2026 Polarity: Color band denotes cathode Mounting Position: Any Weight: 0.04 ounce, 1.1 gram MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Ratings at 25 J ambient temperature unless otherwise specified. 60 Hz, resistive or inductive load. For capacitive load, derate current by 20%. SYMBOLS BY251 BY252 BY253 BY254 BY255 Maximum Recurrent Peak Reverse Voltage Maximum RMS Voltage Maximum DC Blocking Voltage Maximum Average Forward Rectified Current .375"(9.5mm) Lead Length at TA=95 J Peak Forward Surge Current 8.3ms single half sine-wave superimposed on rated load (JEDEC method) Maximum Instantaneous Forward Voltage TJ =25 J at 3.0A TJ=100 J Maximum DC Reverse Current TA=25 J at Rated DC Blocking Voltage TA=100 J Typical Junction capacitance (Note 2) TJ=25 J Typical Reverse Recovery Time (Note 3) Typical Thermal Resistance (Note 1) Operating Junction Temperature Range Storage Temperature Range VRRM VRMS VDC I(AV) 200 140 200 400 280 400 600 420 600 3.0 800 560 800 1300 910 1300 UNITS Volts Volts Volts Amps IFSM 100.0 Amps VF IR CJ TRR R KJA TJ TSTG 1.1 1.0 5.0 1000 40 2.5 15.0 -50 to +150 -50 to +150 Volts Volts g A g A PF g A J /W J J NOTES: 1. Thermal Resistance From Junction to applied at Ambient 0.375"(9.5mm) lead length 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, IR=1.0A, Irr=0.25A. RATING AND CHARACTERISTIC CURVES BY251 THRU BY255 8 7 AMPERES PEAK FORWARD SURGE CURRENT, AVERAGE FORWARD CURRENT, 1=.25"(6.3min) 1=.301"(.79min) TJ = BOTH LEADS TO HEAT SINK WITH LENGTHS (f) AS SHOWN 200 AMPERES 6 5 4 3 2 1 0 TA=AMBIENT TEMPERATURE 0.375(9.5mm) LEAD P.C.BOARD MOUNTING RESISTIVE OR INDUCTIVE LOAD 8.3ms Single Half Since-Wave JEDEC Method MON-REPETITIVE TJ=150 J 100 50 REPETITIVE 1=.50"(12.7min) 10 1 5 10 50 100 AMBIENT TEMPERATURE, J 40 60 80 100 120 140 160 180 TEMPERATURE, J Fig. 1-FORWARD CURRENT DERATING CURVE Fig. 2-MAXIMUM PEAK FORWARD SURGE CURRENT 100 INSTANTANEOUS FORWARD CURRENT, AMPERES CAPACITANCE, pF 100 30 50 10 10 1 TJ = 25 J f = 1MHz Visg = 50m Vp-p 1 5 10 50 100 3.0 1.0 0.3 Tj = 25 J Pulse Width = 300g s 2% Duty Cycle REVERSE VOLTAGE, VOLTS Fig. 4-TYPICAL JUNCTION CAPACITANCE 10 0.1 TA = 100 J .03 .01 0.6 1.0 0.1 0.8 1.0 1.2 1.4 1.6 1.8 2.0 .01 TA = 25 J INSTANTANEOUS FORWARD VOLTAGE, VOLTS Fig. 3-TYPICAL INSTANTANEOUS FORWARD CHARACTERISTICS 0 20 40 60 80 100 120 140 PERCENT OF RATED PAK REVERSE VOLTAGE, % Fig. 5-TYPICAL REVERSE CHARACTERISTICS |
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