BY251 THRU BY255
MEDIUM CURRENT PLASTIC RECTIFIER
VOLTAGE - 200 to 1300 Volts
FEATURES
l
Exce High surge current capability
l
Plastic package has Underwriters Laboratory
Flammability Classification 94V-O
l
Low leakage
l
Void-free molded in DO-201AD plastic package
l
High current operation of 3 Amperes at T
A
=95
¢J
l
with no thermal runaway
eds environmental standards of MIL-S-19500/228
CURRENT - 3.0 Amperes
DO-201AD
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
¢J
ambient temperature unless otherwise specified.
60 Hz, resistive or inductive load.
For capacitive load, derate current by 20%.
SYMBOLS
BY251
BY252
BY253
BY254
BY255
Maximum Recurrent Peak Reverse Voltage
Maximum RMS Voltage
Maximum DC Blocking Voltage
Maximum Average Forward Rectified
Current .375"(9.5mm) Lead Length at
T
A
=95
¢J
Peak Forward Surge Current 8.3ms single
half sine-wave superimposed on rated load
(JEDEC method)
Maximum Instantaneous Forward Voltage T
J
=25
¢J
at 3.0A
T
J
=100
¢J
Maximum DC Reverse Current T
A
=25
¢J
at Rated DC Blocking Voltage T
A
=100
¢J
Typical Junction capacitance (Note 2) T
J
=25
¢J
Typical Reverse Recovery Time (Note 3)
Typical Thermal Resistance (Note 1)
Operating Junction Temperature Range
Storage Temperature Range
V
RRM
V
RMS
V
DC
I
(AV)
200
140
200
400
280
400
600
420
600
3.0
800
560
800
UNITS
1300 Volts
910
Volts
1300 Volts
Amps
I
FSM
100.0
Amps
V
F
I
R
C
J
T
RR
R
£KJA
T
J
T
STG
1.1
1.0
5.0
1000
40
2.5
15.0
-50 to +150
-50 to +150
Volts
Volts
£g
A
£g
A
P
F
£g
A
¢J
/W
¢J
¢J
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
8
7
AMPERES
PEAK FORWARD SURGE CURRENT,
AVERAGE FORWARD CURRENT,
1=.25"(6.3min) 1=.301"(.79min)
TJ = BOTH LEADS TO
HEAT SINK WITH
LENGTHS (f) AS
SHOWN
200
AMPERES
6
5
4
3
2
1
0
TA=AMBIENT TEMPERATURE
0.375(9.5mm) LEAD
P.C.BOARD MOUNTING
RESISTIVE OR INDUCTIVE
LOAD
8.3ms Single Half Since-Wave
JEDEC Method
MON-REPETITIVE
TJ=150
¢J
100
50
REPETITIVE
1=.50"(12.7min)
10
1
5
10
50
100
AMBIENT TEMPERATURE,
¢J
40
60
80
100
120
140
160
180
TEMPERATURE,
¢J
Fig. 1-FORWARD CURRENT DERATING CURVE
Fig. 2-MAXIMUM PEAK FORWARD SURGE CURRENT
100
INSTANTANEOUS FORWARD CURRENT, AMPERES
CAPACITANCE, pF
100
30
50
10
10
1
TJ = 25
¢J
f = 1MHz
Visg = 50m Vp-p
1
5
10
50
100
3.0
1.0
0.3
Tj = 25
¢J
Pulse Width = 300£g s
2% Duty Cycle
REVERSE VOLTAGE, VOLTS
Fig. 4-TYPICAL JUNCTION CAPACITANCE
10
0.1
TA = 100
¢J
.03
.01
0.6
1.0
0.1
0.8
1.0
1.2
1.4
1.6
1.8
2.0
.01
TA = 25
¢J
INSTANTANEOUS FORWARD VOLTAGE, VOLTS
Fig. 3-TYPICAL INSTANTANEOUS FORWARD
CHARACTERISTICS
0
20
40
60
80
100 120
140
PERCENT OF RATED PAK REVERSE VOLTAGE, %
Fig. 5-TYPICAL REVERSE CHARACTERISTICS
DSP and ARM Processors
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