BY251
THRU
BY255
3.0 AMPS. Silicon Rectifiers
Voltage Range
200 to 1300 Volts
Current
3.0Amperes
Features
a
a
a
a
a
a
a
a
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Low forward voltage drop
High current capability
High reliability
High surge current capability
DO-201AD
Mechanical Data
Cases: Molded plastic
Epoxy: UL 94V-O rate flame retardant
Lead: Axial leads, solderable per MIL-
Lead:
STD-202, Method 208 guaranteed
Polarity: Color band denotes cathode end
High temperature soldering guaranteed:
250擄C/10 seconds/.375鈥?(9.5mm) lead
lengths at 5 lbs., (2.3kg) tension
Weight: 1.2 grams
a
Dimensions in inches and (millimeters)
Maximum Ratings and Electrical Characteristics
Rating at 25擄C ambient temperature unless otherwise specified.
Single phase, half wave, 60 Hz, resistive or inductive load.
For capacitive load, derate current by 20%
Type Number
Maximum Recurrent Peak Reverse Voltage
Maximum RMS Voltage
Maximum DC Blocking Voltage
Maximum Average Forward Rectified Current
. 375 (9.5mm) Lead Length @T
A
= 75擄C
Peak Forward Surge Current, 8.3 ms Single
Half Sine-wave Superimposed on Rated Load
(JEDEC method )
Maximum Instantaneous Forward Voltage
@ 3.0A
Maximum DC Reverse Current @ T
A
=25擄C
at Rated DC Blocking Voltage @ T
A
=100擄C
Maximum Full Load Reverse Current, Full
Cycle Average .375鈥?9.5mm) Lead Length
@T
L
=75擄C
Typical Junction Capacitance ( Note 1 )
Typical Thermal Resistance R脹JA ( Note 2 )
Operating Temperature Range T
J
Storage Temperature Range T
STG
BY251
200
140
200
BY252
400
280
400
BY253
600
420
600
3.0
150
1.0
5.0
100
30
50
18
-65 to +150
-65 to +150
BY254
800
560
800
BY255
1300
910
1300
Units
V
V
V
A
A
V
uA
uA
uA
pF
擄C/W
擄C
擄C
Notes: 1. Measured at 1 MHz and Applied Reverse Voltage of 4.0 V D.C.
Notes:
2. Thermal Resistance from Junction to Ambient .375鈥?(9.5mm) Lead Length.
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