BL
FEATURES
L ow leakage
GALAXY ELECTRICAL
BY251(Z) - - - BY255(Z)
VOLTAGE RANGE: 200 --- 1300 V CURRENT: 3.0 A
PLASTIC SILICON RECTIFIER
L ow cost Diffused junction L ow forward voltage drop High current capability Easily cleaned witn Freon,Alcohol,lsopropanol and similar solvents The plastic material carries U/L recognition 94V-0
D O - 27
MECHANICAL DATA
Case:JEDEC DO-27,molded plastic Terminals: Axial lead ,solderable per MIL- STD-202,Method 208 Polarity: Color band denotes cathode Weight: 0.041 ounces, 1.15 grams Mounting position: Any
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25 a mbient temperature unless otherwise specified. Single phase,half wave,60 Hz,resistive or inductive load. For capacitive load,derate by 20%.
BY 251
Maximum recurrent peak reverse voltage Maximum RMS voltage Maximum DC blocking voltage Maximum average forw ard rectified current 9.5mm lead length, @TA =75
BY 252
400 280 400
BY 253
600 420 600 3.0
BY 254
800 560 800
BY 255
1300 910 1300
UNITS
V V V A
VRRM VRMS VDC IF(AV)
200 140 200
Peak forw ard surge current 8.3ms single half-sine-w ave superimposed on rated load @TJ =125
IFSM
100.0
A
Maximum instantaneous forw ard voltage @ 3.0 A Maximum reverse current at rated DC blocking voltage Typical junction capacitance Typical thermal resistance @TA=25 @TA=100 (Note1) (Note2)
VF IR CJ RθJA TJ TSTG
1.1 10.0 100.0 35 20 - 55 ---- + 150 - 55 ---- + 150
V A pF /W
Operating junction temperature range Storage temperature range
2. Thermal resistance f rom junction to ambient.
NOTE: 1. Measured at 1.0MHz and applied rev erse v oltage of 4.0V DC.
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Document Number 0260014
BLGALAXY ELECTRICAL
1.
RATINGS AND CHARACTERISTIC CURVES
FIG.1 -- TYPICAL FORWARD CHARACTERISTICS INSTANTANEOUS FORWARD CURRENT,
BY251(Z)- - -BY255(Z)
FIG.2 -- TYPICAL CURRENT DERATING CURVE
10 4 2
AVERAGE FORWARD CURRENT AMPERES
100
4
3
AMPERES
1.0 0.4 0.2 0.1 0.06 0.04 0.02 0.01 0.6 0.8 1.0 1.2 1 .4 1.6
T J =25 P ulse W idth=3 00uS
2
1
Single Phase Half Wave 60HZ Resistive or Inductive Load
0 0 25 50 75 100 125 150
FORWARD VOLTAGE, VOLTS
AMBIENT TEMPERATURE,
FIG.3 -- MAXIMUM NON-REPETITIVE FORWARD SURGE CURRENT
FIG.4 -- TYPICAL JUNCTION CAPACITANCE
PEAK FORWARD SURGE CURRENT
100
JUNCTION CAPACITANCE,pF
100 60 40 20 10
f=1MHz TJ=25
TJ=125℃ 8.3ms Single Half Sine-Wave
AMPERES
4 2 1 .1 .2 .4 1.0 2 4 10 20 40 100
0 1 2 4 8 10 20 40 60 80 100
NUMBER OF CYCLES AT 60Hz
REVERSE VOLTAGE, VOLTS
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Document Number 0260014
BL GALAXY ELECTRICAL
2.
RATINGS AND CHARACTERISTIC CURVES
FIG.5 -- TYPICAL REVERSE CHARACTERISTICS REVERSE LEAKAGE CURRENT, MICRO AMPERES
BY251(Z) - - - BY255(Z)
100
10
TJ=125 C
0
1.0
TJ=125 C
0
0.1
.01 0 20 40 60 80 100 120 140
PERCENT OF RATED PEAK REVERASE VOLTAGE, %
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Document Number 0260014
BLGALAXY ELECTRICAL
3.
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