BY251 PFS | Alldatasheet
Document overview
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Technical content
AXIAL SILASTIC GUARD JUNCTION STANDARD RECTIFIER VOLTAGE RANGE 200 to 1300 Volts BY251 THRU BY255 CURRENT 3.0 Ampere Web Site:
FEATURES
- Low coat construction
- Low forward voltage drop
- Low reverse leakage
- High forward surge current capability
- High temperature soldering guaranteed: 260℃/10 secods/.375”(9.5mm)lead length at 5 lbs(2.3kg) tension MECHANICAL DATA
- Case: Transfer molded plastic
- Epoxy: UL94V-O rate flame retardant
- Polarity: Color band denotes cathode end
- Lead: Plated axial lead, solderable per MIL-STD-202E method 208C
- Mounting position: Any
- Weight: 0.042 ounce, 1.19 grams MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
- Ratings at 25OC ambient temperature unless otherwise specified
- Single Phase, half wave, 60Hz, resistive or inductive load
- For capacitive load derate current by 20% SYMBOLS BY251 BY252 BY253 BY254 BY255 UNIT Maximum Repetitive Peak Reverse Voltage VRRM 200 400 600 800 1300 Volts Maximum RMS Voltage VRMS 140 280 420 560 910 Volts Maximum DC Blocking Voltage VDC 200 400 600 800 1300 Volts Maximum Average Forward Rectified Current 0.375”(9.5mm) lead length at TA= 75℃ I(AV) 3.0 Amps Peak Forward Surge Current 8.3mS single half sine wave superimposed on rated load (JEDEC method) IFSM 125 Amps Maximum Instantaneous Forward Voltage @ 3.0A VF 1.1 Volts TA = 25℃ 5.0 Maximum DC Reverse Current at Rated DC Blocking Voltage per element TA = 100℃ IR 50 µA Maximum Full Load Reverse Current, full cycle average 0.375”(9.5mm)lead length at TL=75℃ IR(AV) 500 µA Typical Junction Capacitance (Note 1) CJ 40 pF Typical Thermal Resistance (Note 2) RθJA 30 ℃/W Operating Junction Temperature Range TJ -55 to +150 ℃ Storage Temperature Range TSTG -55 to +150 ℃ Notes: 1. Measured at 1.0MHz and Applied Reverse Voltage of 4.0V DC. DIA..052(1.3) .048(1.2) .220(5.6) .197(5.0) 1.0(25.4) MIN. .375(9.5) .335(8.5) 1.0(25.4) MIN. DO-27 Dimensions in inches and (millimeters) DIA. WWW.PS-PFS.COM
AXIAL SILASTIC GUARD JUNCTION STANDARD RECTIFIER VOLTAGE RANGE 200 to 1300 Volts BY251 THRU BY255 CURRENT 3.0 Ampere Web Site: FIG.2-MAXIMUM NON-REPETITIVE PEAK 100 Tj jmax 5020108521 CURRENT, (A) PEAK FORWARD SURGE NUMBER OF CYCLES AT 60 Hz 8.3ms Single Half Sine-Wave (JEDEC Method) =T FORWARD SURGE CURRENT DERATING CURVE FIG.1-TYPICAL FORWARD CURRENT 150 17512575 10050 Single Phase Inductive Load Half Wave 60Hz Resistive or AVERAGE FORWARD CURRENT, (A) AMBIENT TEMPERATURE, (° C) (mA) 100 100 FIG.5-TYPICAL JUNCTION CAPACITANCE 10.01.0 4.00.1 REVERSE VOLTAGE,(VOLTS) TJ=25° C F=1MHz CAPACITANCE,(pF) INSTANTANEOUS REVERSE CURRENT, RATING AND CHRACTERISTIC CURVES BY251 Thur BY255 0.5 1.0 1.5 2.0 2.5 3.0 125 100 150 2.01.81.6 INSTANTANEOUS FORWARD CURRENT, INSTANTANEOUS FORWARD VOLTAGE,(V) (A)(A) 0.01 0.1 Pulse Width=300us 1% Duty Cycle 0.6 0.8 1.0 1.2 T =25° Cj 1.4 FIG.3-TYPICAL INSTANTANEOUS FORWARD CHARACTERISTICS 100 120 140 PERCENT OF RATED PEAK REVERSE VOLTAGE,(%) 0.01 0.1 1.0 1006040 80 T =25° Cj T =100° Cj FIG.4-TYPICAL REVERSE CHARACTERISTICS WWW.PS-PFS.COM