AXIAL SILASTIC GUARD JUNCTION STANDARD RECTIFIER
BY251 THRU BY255
FEATURES
•
•
•
•
•
VOLTAGE RANGE
CURRENT
200 to 1300 Volts
3.0 Ampere
DO-27
1.0(25.4)
MIN.
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
.375(9.5)
.335(8.5)
.220(5.6)
DIA.
.197(5.0)
1.0(25.4)
MIN.
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
.052(1.3)
DIA.
.048(1.2)
Dimensions in inches and (millimeters)
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
•
•
•
Ratings at 25
O
C ambient temperature unless otherwise specified
Single Phase, half wave, 60Hz, resistive or inductive load
For capacitive load derate current by 20%
SYMBOLS
Maximum Repetitive Peak Reverse Voltage
Maximum RMS Voltage
Maximum DC Blocking Voltage
Maximum Average Forward Rectified Current
0.375”(9.5mm) lead length at T
A
= 75℃
Peak Forward Surge Current
8.3mS single half sine wave superimposed on
rated load (JEDEC method)
Maximum Instantaneous Forward Voltage @ 3.0A
Maximum DC Reverse Current at Rated
DC Blocking Voltage per element
T
A
= 25℃
T
A
= 100℃
V
RRM
V
RMS
V
DC
I
(AV)
I
FSM
V
F
I
R
I
R(AV)
C
J
R
θJA
T
J
T
STG
BY251
200
140
200
BY252
400
280
400
BY253
600
420
600
3.0
125
1.1
5.0
50
500
40
30
-55 to +150
-55 to +150
BY254
800
560
800
BY255
1300
910
1300
UNIT
Volts
Volts
Volts
Amps
Amps
Volts
µA
µA
pF
℃
/W
℃
℃
Maximum Full Load Reverse Current, full cycle average
0.375”(9.5mm)lead length at T
L
=75℃
Typical Junction Capacitance (Note 1)
Typical Thermal Resistance (Note 2)
Operating Junction Temperature Range
Storage Temperature Range
Notes:
1. Measured at 1.0MHz and Applied Reverse Voltage of 4.0V DC.
2. Thermal Resistance from junction to ambient at .375”(9.5mm) lead length, P.C.board mounted.
E-mail:
sales@cnmic.com
Web Site: www.cnmic.com
AXIAL SILASTIC GUARD JUNCTION STANDARD RECTIFIER
BY251 THRU BY255
VOLTAGE RANGE
CURRENT
200 to 1300 Volts
3.0 Ampere
RATING AND CHRACTERISTIC CURVES BY251 Thur BY255
FIG.1-TYPICAL FORWARD CURRENT
DERATING CURVE
3.0
FIG.2-MAXIMUM NON-REPETITIVE PEAK
FORWARD SURGE CURRENT
150
AVERAGE FORWARD CURRENT,
PEAK FORWARD SURGE
2.5
125
2.0
CURRENT, (A)
100
8.3ms Single Half Sine-Wave
(JEDEC Method) =T T
j
jmax
(A)
1.5
75
50
25
1.0
Single Phase
Half Wave 60Hz
Resistive or
0.5
0
0
Inductive Load
25
50
75
100
125
150
175
0
1
2
5
8
10
20
50
100
AMBIENT TEMPERATURE, (° C)
NUMBER OF CYCLES AT 60 Hz
FIG.3-TYPICAL INSTANTANEOUS
FORWARD CHARACTERISTICS
100
FIG.4-TYPICAL REVERSE
CHARACTERISTICS
20
10
INSTANTANEOUS FORWARD CURRENT,
INSTANTANEOUS REVERSE CURRENT,
10
T
j
=100° C
1.0
1
(A)
(mA)
0.1
0.1
T
j
=25° C
Pulse Width=300us
1% Duty Cycle
T
j
=25° C
0.01
0
20
40
60
80
100
120
140
0.01
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
INSTANTANEOUS FORWARD VOLTAGE,(V)
PERCENT OF RATED PEAK
REVERSE VOLTAGE,(%)
FIG.5-TYPICAL JUNCTION CAPACITANCE
100
CAPACITANCE,(pF)
10
TJ=25° C F=1MHz
10
0.1
1.0
4.0
10.0
100
REVERSE VOLTAGE,(VOLTS)
E-mail:
sales@cnmic.com
Web Site: www.cnmic.com
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