SILICON RECTIFIERS
BY251
THRU
BY255
1.Dimensions of outlines
Unit: mm
YIGUANG
DO-27
2.Maximum Ratings
TYPE NUMBER
Maximum repetitive peak reverse
voltage
Maximum RMS voltage
Maximum DC blocking voltage
Maximum average forward rectified
current9.5mm lead length at T
A
=75
Peak Forward Surge Current, 8.3ms
single half-wave superimposed on
rated load(JEDEC method)
Operating junction temperature range
Storage temperature range
3. Electronical Characteristics (Ta=25
Symbols
V
RRM
V
RMS
V
DC
I
F(AV)
A
Units
V
V
BY
251
200
140
200
BY
252
400
280
400
BY
253
600
420
600
3.0
150
I
FSM
T
J
T
stg
A
-65to+125
-65to+150
BY
254
800
560
800
BY
255
1000
700
1000
unless otherwise specified)
TYPE NUMBER
Maximum instantaneous forward voltage at3.0A
Maximum instantaneous reverse current at rated DC
blocking voltage
Ta=25
Ta=100
Symbols
V
F
I
R1
I
R2
Units
V
A
A
Value
1.0Max.
5.0Max.
100.0Max