BY251 THRU BY255
MEDIUM CURRENT PLASTIC RECTIFIER
VOLTAGE - 200 to 1300 Volts CURRENT - 3.0 Amperes
FEATURES
l
High surge current capability
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Plastic package has Underwriters Laboratory
Flammability Classification 94V-O
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Low leakage
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Void-free molded in DO-201AD plastic package
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High current operation of 3 Amperes at T
A
=95
with no thermal runaway
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Exceeds environmental standards of MIL-S-19500/228
MECHANICAL DATA
Case: JEDEC DO-201AD Molded plastic
Terminals: Plated axial leads, solderable per MIL-STD-750,
Method 2026
Polarity: Color band denotes cathode
Mounting Position: Any
Weight: 0.04 ounce, 1.1 gram
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25 ambient temperature unless otherwise specified.
60 Hz, resistive or inductive load.
For capacitive load, derate current by 20%.
SYMBOLS BY251
BY252
BY253
BY254
BY255
UNITS
Maximum Recurrent Peak Reverse Voltage
V
RRM
200
400
600
800
1300 Volts
Maximum RMS Voltage
V
RMS
140
280
420
560
910
Volts
Maximum DC Blocking Voltage
V
DC
200
400
600
800
1300 Volts
Maximum Average Forward Rectified
Current .375"(9.5mm) Lead Length at
T
A
=95
I
(AV)
3.0
Amps
Peak Forward Surge Current 8.3ms single
half sine-wave superimposed on rated load
(JEDEC method)
I
FSM
100.0
Amps
Maximum Instantaneous Forward Voltage T
J
=25
at 3.0A T
J
=100
V
F
1.1
1.0
Volts
Volts
Maximum DC Reverse Current T
A
=25
at Rated DC Blocking Voltage T
A
=100
I
R
5.0
1000
A
A
Typical Junction capacitance (Note 2) T
J
=25
C
J
40
P
F
Typical Reverse Recovery Time (Note 3)
T
RR
2.5
A
Typical Thermal Resistance (Note 1)
R JA
15.0
/W
Operating Junction Temperature Range
T
J
-50 to +150
Storage Temperature Range
T
STG
-50 to +150
DO-201AD
NOTES:
1. Thermal Resistance From Junction to applied at Ambient 0.375"(9.5mm) lead length P.C.Board mounted.
2. Measured at 1 MHz and applied reverse voltage of 4.0 volts.
3. Reverse Recovery Test Conditions: I
F
=0.5A, I
R
=1.0A, Irr=0.25A.
RATING AND CHARACTERISTIC CURVES BY251 THRU BY255
Fig. 1-FORWARD CURRENT DERATING CURVE Fig. 2-MAXIMUM PEAK FORWARD
SURGE CURRENT
Fig. 3-TYPICAL INSTANTANEOUS FORWARD Fig. 4-TYPICAL JUNCTION CHARACTERISTICS
CHARACTERISTICS
Fig. 5-TYPICAL REVERSE CHARACTERISTICS
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