BY251 JINANJINGHENG | Alldatasheet
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GENERAL PURPOSE PLASTIC RECTIFIER Reverse Voltage - 200 to 1300 Volts Forward Current -3.0Amperes MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS (Ratings at 25 C ambient temperature unless otherwise specified ,Single phase ,half wave 60Hz,,resistive or inductive load. For capacitive load, derate by 20%.)
FEATURES
Case: JEDEC DO-201AD molded plastic body Terminals: Plated axial lead solderable per MIL-STD-750,method 2026 Polarity: Color band denotes cathode end Mounting Position: Any Weight: 0.042ounce, 1.1 grams Low cost Diffused junction High current capability The plastic material carries U/L recognition 94V-0 Maximum Recurrent Peak Reverse Voltage VRRM Volts Volts A Amps Amps Amps I(AV) IFSM IFRM VF IR R JA Maximum average Forward Rectified Current at TA=50 C Maximum Instantaneous Forward Voltage at 3.0 A Typical Junction Capacitance (Note 1) Typical Thermal Resistance Maximum Reverse current at rated DC Blocking Voltage Peak Forward Surge Current 8.3ms single half sine-wave superimposed on rated load Recurrent peak Forward Current 3.0 100.0 30.0 30.0 10.0 20.0 1.1 PF C/W CJ Note: 1.Measured at 1MHz and applied reverse voltage of 4.0V DO-201AD Dimensions in inches and (millimeters) 0.375(9.50) 0.210(5.3) 0.052(1.32) 1.0(25.4) MIN 1.0(25.4) MIN 0.285(7.20) 0.190(4.8) DIA 0.048(1.22) DIA 200 400 600 800 1000 TSTG Operating and Storage temperature Range C TJ -50 to+150 R SEMICONDUCTOR Symols UnitsBY 251 BY 252 BY 253 BY 254 BY 255 SILICON RECTIFIER JFJF 7-44
RATINGS AND CHARACTE RISTIC CURVES BY251 THRU BY255 0.001 0.01 0.1 100 0 5 25 3020 10 15 50 75 125100 150 175 FIG.1-FORWARD CURRENT DERATING CURVE FIG.2-TYPICAL FORWARD CHARACTERISTICS AVERAGE FORWARD CURRENT AMPERES INSTANTANEOUS FORWARD CURRENT( AMPERES) INSTANTANEOUS FORWARD VOLTAGE (VOLTS) Number of cycles at 50Hz LEAD LENGTH (mm) LEAD TEMPERATURE ( C) Typ.values TJ=25 C TJ=150 C 1 2 4 2010 100 100 200 1000 400 FIG.3-MAXIMUM NON-REPBTITIVE FORWARD SURGE CURRENT FIG.4-TYPICAL THERMAL RESISTANCE Permissible surge current(A) R JA THERMAL RESISTANCE JUNCTION AMBIENT( C/W) TJ=25 C Ror L-Load 10mm 10mm C-Load