BY251 THRU BY255 200V-1300V MEDIUM CURRENT PLASTIC RECTIFIER 3.0A FEATURES l l l l l Exce 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 Amperes at TA=95 ¢J l with no thermal runaway eds environmental standards of MIL-S-19500/228 MECHANICAL DATA l l l l l 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%. RANTINGS 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 SYMBOLS BY251 BY252 BY253 BY254 BY255 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 1.1 1.0 Volts Volts IR 5.0 1000 CJ TRR R £KJA TJ TSTG 40 2.5 15.0 -50 to +150 -50 to +150 £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. E-mail: [email protected] 1 of 2 Web Site: www.taychipst.com BY251 THRU BY255 200V-1300V MEDIUM CURRENT PLASTIC RECTIFIER TJ = BOTH LEADS TO HEAT SINK WITH LENGTHS (f) AS SHOWN 1=.50"(12.7min) 4 3 TA=AMBIENT TEMPERATURE 0.375(9.5mm) LEAD P.C.BOARD MOUNTING RESISTIVE OR INDUCTIVE LOAD 2 1 0 40 60 80 100 120 140 160 BY251 THRU BY255 200 AMPERES 1=.25"(6.3min) 1=.301"(.79min) 6 5 PEAK FORWARD SURGE CURRENT, 8 7 AMPERES AVERAGE FORWARD CURRENT, RATINGS AND CHARACTERISTIC CURVES 3.0A 8.3ms Single Half Since-Wave JEDEC Method 100 MON-REPETITIVE TJ=150¢J 50 REPETITIVE 10 1 180 5 10 50 100 AMBIENT TEMPERATURE, ¢J TEMPERATURE, ¢J Fig. 1-FORWARD CURRENT DERATING CURVE Fig. 2-MAXIMUM PEAK FORWARD SURGE CURRENT CAPACITANCE, pF INSTANTANEOUS FORWARD CURRENT, AMPERES 100 100 30 10 50 TJ = 25 ¢J f = 1MHz Visg = 50m Vp-p 10 1 1 Tj = 25 ¢J Pulse Width = 300£g s 2% Duty Cycle 3.0 1.0 5 10 50 100 REVERSE VOLTAGE, VOLTS Fig. 4-TYPICAL JUNCTION CAPACITANCE 0.3 10 0.1 TA = 100 ¢J .03 1.0 .01 0.6 0.1 0.8 1.0 1.2 1.4 1.6 1.8 2.0 TA = 25 ¢J INSTANTANEOUS FORWARD VOLTAGE, VOLTS .01 0 Fig. 3-TYPICAL INSTANTANEOUS FORWARD CHARACTERISTICS 20 40 60 80 100 120 140 PERCENT OF RATED PAK REVERSE VOLTAGE, % Fig. 5-TYPICAL REVERSE CHARACTERISTICS E-mail: [email protected] 2 of 2 Web Site: www.taychipst.com