BY251P thru BY255P
Vishay Semiconductors
formerly General Semiconductor
General Purpose Rectifiers
DO-201AD
Reverse Voltage
200 to 1300V
Forward Current
3.0A
Features
1.0 (25.4)
Min.
0.210 (5.3)
0.190 (4.8)
Dia.
0.375 (9.5)
0.285 (7.2)
• Plastic package has Underwriters Laboratories
Flammability Classification 94V-0
• High surge current capability
• Typical I
R
less than 0.1
µA
• Construction utilizes void-free molded plastic technique
• 3.0 Ampere operation at T
A
= 55 °C with no thermal
runaway
• High temperature soldering guaranteed:
250 °C/10 seconds, 0.375" (9.5 mm) lead length
5 lbs. (2.3 kg) tension
Mechanical Data
1.0 (25.4)
Min.
0.052 (1.32)
0.048 (1.22)
Dia.
Case:
JEDEC DO-201AD, molded plastic body
Terminals:
Plated axial leads, solderable per
MIL-STD-750, Method 2026
Polarity:
Color band denotes cathode end
Mounting Position:
Any
Weight:
0.04 oz., 1.12 g
Dimensions in inches and (millimeters)
Maximum Ratings & Thermal Characteristics
Parameter
Maximum repetitive peak reverse voltage
Maximum RMS voltage
Maximum DC blocking voltage
Maximum average forward rectified current
10mm lead length at T
A
= 55 °C
Peak forward surge current 10ms single half sine-wave
superimposed on rated load (JEDEC Method)
Maximum full load reverse current, full cycle average
10mm lead length at T
A
= 55 °C
Typical thermal resistance
(1)
Operating junction and storage temperature range
Ratings at 25 °C ambient temperature unless otherwise specified.
Symbol BY251P BY252P BY253P BY254P BY255P
V
RRM
V
RMS
V
DC
I
F(AV)
I
FSM
I
R(AV)
R
θJA
R
θJL
T
J
, T
STG
200
140
200
400
280
400
600
420
600
3.0
150
100
20
10
–65 to +150
800
560
800
1300
910
1300
Unit
V
V
V
A
A
µA
°C/W
°C
Electrical Characteristics
Ratings at 25 °C ambient temperature unless otherwise specified.
Maximum instantaneous forward voltage at 3.0A
Maximum reverse current
at rated DC blocking voltage T
A
= 25°C
Typical reverse recovery time
I
F
= 0.5A, I
R
= 1.0V, I
rr
= 0.25A
Typical junction capacitance at 4.0V, 1MHz
V
F
I
R
t
rr
C
J
1.1
5.0
3.0
40
V
µA
µs
pF
Note:
(1) Thermal resistance from junction to ambient and from junction to lead at 0.375” (9.5mm) lead length, P.C.B. mounted
Document Number 88838
17-Dec-02
www.vishay.com
1
BY251P thru BY255P
Vishay Semiconductors
formerly General Semiconductor
Ratings and
Characteristic Curves
(T
A
= 25°C unless otherwise noted)
Fig 1 - Forward Current Derating Curve
4.0
Average Forward Rectified Current (A)
Peak Forward Surge Current (A)
60 Hz
Resistive or
Inductive Load
Fig 2 - Maximum Non-repetitive Peak
Forward Surge Current
200
8.3ms Single Half Sine-Wave
(JEDEC Method)
3.0
100
T
A
= 55°C
2.0
1.0
10mm lead length
0
0
25
50
75
125
100
Ambient Temperature, ¡C
150
175
10
1
10
Number of Cycles at 60Hz
100
100
Instantaneous Forward Current (A)
T
J
= 25°C
Pulse width = 300µs
1% Duty Cycle
Instantaneous Reverse Leakage Current ( A)
Fig 3 - Typical Instantaneous Forward
Characteristics
Fig 2 - Maximum Non-repetitive Peak
Forward Surge Current
10
T
J
= 125°C
10
1
T
J
= 75°C
1
0.1
T
J
= 25°C
0.1
0.6
0.01
0
40
80
60
100
20
Percent of Rated Peak Reverse Voltage (%)
1.2
0.7
0.8
0.9
1.0
1.1
Instantaneous Forward Voltage (V)
1.3
Fig 5 - Typical Junction Capacitance
100
T
J
= 25°C
f = 1.0 MHz
Vsig = 50mVp-p
Junction Capacitance (pF)
10
1
10
Reverse Voltage (V)
100
www.vishay.com
2
Document Number 88838
17-Dec-02
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