BY251 ~ BY255
MEDIUM CURRENT PLASTIC RECTIFIER
VOLTAGE
FEATURES
• Plastic package has Underwriters Laboratories
Flammability Classification 94V-O
• Void-free Plastic in DO-201AD package.
• Exceeds environmental standards of MIL-S-19500/228
• Low leakage .
.375(9.5)
.285(7.2)
1.0(25.4)MIN.
200 to 1300 Volts
CURRENT
3.0 Amperes
DO-201AD
Unit: inch(mm)
• High current capability.
.052(1.3)
.048(1.2)
• In compliance with EU RoHS 2002/95/EC directives
MECHANICALDATA
• Case: Molded plastic, DO-201AD
• Polarity: Color Band denotes cathode end
• Mounting Position: Any
• Weight: 0.0395 ounce, 1.122 grams
• Terminals: Axial leads, solderable to MIL-STD-750,Method 2026
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25°C ambient temperature unless otherwise specified.
Resistive or inductive load, 60Hz.
PARAMETER
Maximum Recurrent Peak Reverse Voltage
Maximum RMS Voltage
Maximum DC Blocking Voltage
Maximum Average Forward Current .375"(9.5mm)
lead length
Peak Forward Surge Current : 8.3ms single half sine-wave
superimposed on rated load(JEDEC method)
Maximum Forward Voltage at 3.0A
Maximum DC Reverse Current at T
J
=25
O
C
Rated DC Blocking Voltage T
J
=100
O
C
Typical Junction capacitance (Note 1)
Typical Thermal Resistance(Note 2)
Operating Junction and Storage Temperature Range
SYMBOL
V
R R M
V
R M S
V
D C
I
F (A V )
I
F S M
V
F
I
R
C
J
R
θ
J A
T
J
,T
S T G
BY251
200
140
200
BY252
400
280
400
1.0(25.4)MIN.
.210(5.3)
.188(4.8)
BY253
600
420
600
3.0
100
1.1
5.0
1000
40
15
-55 to +150
BY254
800
560
800
BY255
1300
910
1300
UNITS
V
V
V
A
A
V
µA
pF
O
C/W
O
C
NOTES:
1. Measured at 1 MHz and applied reverse voltage of 4.0 volts.
2.Thermal resistance from junction to ambient.
3.Reverse Recovery Test Conditions:I
F
=0.5A , I
R
=1.0A ,Irr=0.25A
STAD-FEB.27.2009
1
PAGE . 1
BY251 ~ BY255
RATING AND CHARACTERISTIC CURVES
100
AVERAGE FORWARD RECTIFIED
CURRENT AMPERES
3.0
2.5
2.0
1.5
1.0
0.5
0
0
50
100
O
INSTANTANEOUS FORWARD CURRENT,
AMPERES
10
1.0
SINGLE PHASE HALF WAVE 60Hz
RESISTIVE OR INDUCTIVE LOAD
.375" (9.5mm) LEAD LENGTH
0.1
150
0 .01
0.5
0.7
0.9
1.1
1.3
1.5
1.7
AMBIENT TEMPERATURE, C
INSTANTANEOUS FORWARD VOLTAGE, VOLTS
FIG.1 FORWARD CURRENT DERATING CURVE
100
FIG.2 TYPICAL FORWARD CHARACTERISTICS
JUNCTION CAPACITANCE, pF
120
PEAK FORWARD SURGE CURRENT,
AMPERES
100
80
10
60
40
20
0
1
2
6
10
20
40
60
100
?.1
1
10
100
NO. OF CYCLES AT 60Hz
REVERSE VOLTAGE, VOLTS
FIG.3 TYPICAL JUNCTION CAPACITANCE
INSTANTANEOUS REVERSE CURRENT ,
m
A
Fig.4 MAXIMUM NON REPETITIVE PEAK SURGE CURRENT
1000
100
T
J
= 125 C
o
10
T
J
= 100
O
C
1.0
T
J
= 2 C
5
O
0.1
20
40
60
80
100
120
140
PERCENTAGE OF PEAK REVERSE VOLTAGE,%
Fig.5-TYPICAL REVERSE CHARACTERISTIC
STAD-FEB.27.2009
1
PAGE . 2
详细参数
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