Datasheet

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EMI ESSENTIALSEMI ESSENTIALS
FABRIC-OVER-FOAM
I/O SELECTION GUIDE
FABRIC-OVER-FOAM
I/O SELECTION GUIDE
DIVERSE ASSEMBLY OPTIONS
Multiple attachment options provide a variety of ways to install critical EMI products. Pressure Sensitive Adhesive
(PSA) has been complemented with the Easy Peel
®
release liner and rigid clip configurations. These mechanical
attachment options enable you to take advantage of existing tooling on doors and enclosures as well as offer
alternate attachment methods to better meet design requirements.
Prole Tolerance Inches (Millimeters)
Height & Width ± .020 (0,5)
Length Inches (Millimeters) Tolerance Inches (Millimeters)
1 to 6 (25,4 – 152,4) ± .030 (0,8)
>6 to 11 (152,4 – 279,4) ± .050 (1,3)
>11 to 48 (279,4 – 1219,2) ± .100 (2,5)
>48 to 70 (1219,2 – 1778,0) ± .187 (4,7)
>70 to 96 (1778,0 – 2438,4) ± .250 (6,4)
For parts shorter than 1 inch (25,4 mm), or longer
than 96" (2438,4 mm), please consult Engineering
for tolerances. See back cover for contact information.
All dimensions shown are in inches (millimeters)
unless otherwise specified.
PROFILE GASKET TOLERANCES
All dimensions shown are in inches (millimeters) unless otherwise specified.
H
W
L1
C-FOLD WITH CLIP
Prole Number
inches (mm)
H
inches (mm)
W
inches (mm)
L1
4E42 0.335 (8,5) 0.284 (7,3) 0.240 (6,1)
Prole Number
inches (mm)
H
inches (mm)
W
inches (mm)
L1
4110 0.203(5,2) 0.250 (6,4) 0.125 (3,2)
4111 0.243(6,2) 0.250 (6,4) 0.165 (4,2)
4039 0.304(7,7) 0.480 (12,2) 0.195 (5,0)
4033 0.35(8,9) 0.480 (12,2) 0.240 (6,1)
4121 0.358(9,1) 0.250 (6,4) 0.280 (7,1)
4040 0.41(10,4) 0.480 (12,2) 0.300 (7,6)
4038 0.43(10,9) 0.490 (12,4) 0.310 (7,9)
4043 0.43(10,9) 0.490 (12,4) 0.310 (7,9)
4085 0.43(10,9) 0.490 (12,4) 0.310 (7,9)
4041 0.568(14,4) 0.480 (12,2) 0.458 (11,6)
D-SHAPED CLIP
W
H
L1
RECTANGLE SHAPED CLIP
Prole Number
inches (mm)
H
inches (mm)
W
inches (mm)
L1
4913 0.440 (11,2) 0.375 (9,5) 0.360 (9,1)
4413 0.485 (12,3) 0.390 (9,9) 0.405 (10,3)
L1
H
W
The following pages show examples of standard I/O gaskets used in computer and telecommunication applications. If you have
different requirements, the Engineering Department will design gaskets to the specifications you supply. Laird will design your I/O
from a fully detailed print, drawing file, or the actual panel to which the gasket is to be applied.
If different tolerances are required, please consult Engineering. See back cover for contact information.
BASIC I/O GASKET DESIGN
1. Space between required cutouts should match or exceed 0.060" (1,5 mm).
2. Distance from the edge of a cutout should be at least 0.060" (1,5 mm)
from the edge of the gasket. In most cases, a slot can be used in place
of a hole that is positioned too close to the gasket edge.
3. All cutouts and locations are designed customer specifications.
4. Pressure Sensitive Adhesive (PSA) and Extended Release Liner (ERL) can be
applied in parallel with the long edge of the gasket.
The recommended operating compression for Fabric-Over-Foam EMI gaskets
will vary depending on the shape and size of the particular gasket. Typically,
I/O gaskets should be compressed between 30% and 50% of the foam height.
ERL
PSA Tape
2
4
3
1
I/O GASKET TOLERANCES
Height tolerance ± .020" (±0.5 mm)
Width tolerance ± .020" (±0.5 mm)
Length tolerance ± .020" (±0.5 mm)
Cutout tolerance ± .020" (±0.5 mm)