Varistor products, Surface mount varistors > sm20 series – Littelfuse SM20 Varistor Series User Manual
Page 4
© 2014 Littelfuse, Inc.
84
Revised: February 6, 2014
Varistor Products
SM20 Series Varistor
Surface Mount Varistors > SM20 Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/sm20.html for current information.
Part Numbering System
For “VARISTOR”
Max Voltage Rating
M(AC)
(Two or three digits -- refer to
ratings and specifications table)
V 275 SM20
SM20 SERIES
8
6
38
S1
S2
Soldering Pad Layout
H1
H2
t
W
D
Product Dimensions
Symbol
Millimeters
Min
Max
D
(diameter)
---
26
H1
---
10.5
H2
1.0
--
t
0.50
0.70
S1
32.5
35
S2
3.0
4.5
W
6.2
6.6
Packaging
192 mm
30 mm
typical
192 mm
30 mm
typical
8.4 mm
typical
Radius
30 mm
typical
11.7 mm
depth
Standard Packaging is in "Waffle" trays:
Quantity per tray: 36 pieces
Quantity per box: 108 pieces
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