BY251 THRU BY255
GENERAL PURPOSE PLASTIC RECTIFIER
Reverse Voltage -
200 to 1300 Volts
Forward Current -
3.0 Amperes
1
DIMENSIONS
DIM
inches
mm
Note
Min.
Max.
Min.
Max.
A
0.283
0.374
7.20
9.50
B
0.189
0.208
4.80
5.30
C
0.048
0.051
1.20
1.30
D
1.000
-
25.40
-
Symbols
BY251
BY252
BY253
BY254
BY255
Units
Peak repetitive reverse voltage
V
RRM
200
400
600
800
1300
Volts
Forward current at T
amb
=50
I
(AV)
3.0
Amps
8.3mS peak forward surge current
I
FSM
100.0
Amps
Recurrent peak forward current
I
FRM
20.0
Amps
Maximum forward voltage drop at I
F
=3.0A
V
F
1.1
Volts
Maximum reverse current at V
RRM
I
R
10.0
A
Maximum thermal resistance (I=10mm)
R
JA
30.0
/W
Operating and storage temperature range
T
J
, T
STG
-65 to +150
Features
Low cost
Diffused junction
High current capability
The plastic material carries U/L recognition 94V-0
Terminals: Axial leads
Polarity: Color band denotes cathode
Maximum Ratings and Electrical Characteristics
Mounting Instruction
Min. distance from body to soldering point, 4mm
Max. solder temperature, 350
Max. soldering time: 3.5 Sec.
Do not bend lead at a point closer than 3mm to the body
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