BY255 Datasheet, PDF (1/2 Pages) List of Unclassifed Manufacturers – 3.0 AMPS. Silicon Rectifiers

Features
BY251 THRU BY255
3.0 AMPS. Silicon Rectifiers
Voltage Range
200 to 1300 Volts
Current
3.0Amperes
DO-201AD
a Low forward voltage drop
a High current capability
a High reliability
a High surge current capability
Mechanical Data
a Cases: Molded plastic
a Epoxy: UL 94V-O rate flame retardant
a Lead: Axial leads, solderable per MIL-
Lead: STD-202, Method 208 guaranteed
a Polarity: Color band denotes cathode end
a High temperature soldering guaranteed:
250°C/10 seconds/.375”,(9.5mm) lead
lengths at 5 lbs., (2.3kg) tension
a Weight: 1.2 grams
Dimensions in inches and (millimeters)
Maximum Ratings and Electrical Characteristics
Rating at 25°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
BY251 BY252 BY253 BY254
Maximum Recurrent Peak Reverse Voltage
200
400
600
800
Maximum RMS Voltage
140
280
420
560
Maximum DC Blocking Voltage
200
400
600
800
Maximum Average Forward Rectified Current
. 375 (9.5mm) Lead Length @TA = 75°C
Peak Forward Surge Current, 8.3 ms Single
Half Sine-wave Superimposed on Rated Load
(JEDEC method )
3.0
150
Maximum Instantaneous Forward Voltage
1.0
@ 3.0A
Maximum DC Reverse Current @ TA=25°C
at Rated DC Blocking Voltage @ TA=100°C
5.0
100
Maximum Full Load Reverse Current, Full
30
Cycle Average .375”(9.5mm) Lead Length
@TL=75°C
Typical Junction Capacitance ( Note 1 )
50
Typical Thermal Resistance RÛJA ( Note 2 )
18
Operating Temperature Range TJ
-65 to +150
Storage Temperature Range TSTG
-65 to +150
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” (9.5mm) Lead Length.
BY255
1300
910
1300
Units
V
V
V
A
A
V
uA
uA
uA
pF
°C/W
°C
°C
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