Sidactor, Protection thyristors, High surge current protection – Littelfuse 5kA Series TO-218 User Manual
Page 4
SIDACtor
®
Protection Thyristors
191
Revised: February 22, 2011
© 2011 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com for current information.
High Surge Current Protection
Dimensions — TO-218
Package
Type
Description
Packing Options
Quantity
Added
Suffix
Industry
Standard
M
TO-218 (ME)
Tube Pack
250(25 per
tube/10 tubes per
box)
N/A
N/A
Packing Options
C
D
H
G
F
B
A
E
T
C
Measurement Point
U DIA.
P
PIN 3
J
PIN 2
PIN 1
M
N 3 Times
K
L
R
Q
W
Tab is
connected to
PIN 2
Dimensions
Inches
Millimeters
Min
Max
Min
Max
A
0.810
0.835
20.57
21.21
B
0.610
0.630
15.49
16.00
C
0.178
0.188
4.52
4.78
D
0.055
0.070
1.40
1.78
E
0.487
0.497
12.37
12.62
F
0.635
0.655
16.13
16.64
G
0.022
0.029
0.56
0.74
H
0.075
0.095
1.91
2.41
J
0.575
0.625
14.61
15.88
K
0.211
0.219
5.36
5.56
L
0.422
0.437
10.72
11.10
M
0.058
0.068
1,47
6.73
N
0.045
0.055
1.14
1.40
P
0.095
0.115
2.41
2.92
R
0.008
0.016
0.20
0.41
U
0.161
0.165
4.1
4.2
W
0.085
0.095
2.17
2.42
Notes:
t
Mold flash shall not exceed 0.13 mm per side.
t
Maximum torque to be applied to mounting tab is 8 in-lbs. (0.904 Nm).
t
Pin 3 has no connection.
t
Tab is non-isolated (connects to middle pin).
Tube Pack Specification — TO-218