51S EMI Gaskets
Fabric-over-Foam
UL 94V0 RATED SN/CU NYLON RIPSTOP (NRS) FABRIC-OVER-FOAM
Laird’s Fabric-over-Foam (FoF) 51S EMI gaskets provide excellent EMI shielding performance
for customers where EMI issues occur. The 51S Series EMI gaskets are composed of electrically
conductive fabric wrapped around a soft urethane foam core. They are supplied with either a
conductive or non-conductive pressure sensitive adhesive (PSA), and can be equipped with an
Extended Release Liner (ERL) on the adhesive. The 51S is a UL 94V0 rated product that can be
created with cross-section profiles such as rectangle, D, C, P, T, knife, bell shapes, and others.
The 51S EMI gaskets can be further customized to an application by die-cutting, hole punching,
notching, etc.
FEATURES
MARKETS
• Fabric-over-Foam gaskets are RoHS compliant
• UL 94V0
• Low surface resistivity of < 0.07 Ω / □
provides excellent conductivity
• Shielding effectiveness of >85 dB across a
wide spectrum of frequencies
• Extremely low compression forces allow for
use of lighter materials
• Fabric is highly conductive to provide good
EMI shielding and grounding
• Laird’s proprietary coating prevents fabric
fraying and fingerprinting, and increases
abrasion resistance
• Available with conductive or
non-conductive PSA
• Many cross-section profiles available such as
rectangle, D, C, P, T, knife, bell and more
• Profile gaskets can be cut to specified lengths,
kiss-cut on release liner, or mitered to form
frame configurations
• Cabinet applications
• LCD and Plasma TV
• Medical equipment
• Servers
• Printers
• Laptop computers
• Networking equipment
• Desktop computers
• Telecommunications cabinets
FORCE/DISPLACEMENT/RESISTANCE (FDR)
SHIELDING EFFECTIVENESS (dB)
USA: +1.866.928.8181
Europe: +49.0.8031.2460.0
Asia: +86.755.2714.1166
www.lairdtech.com
51S EMI Gaskets
Fabric-over-Foam
Item
Unit
Value
Test Method
30MHz-300MHz
dB
95
300MHz-3GHz
dB
102
3GHz-18GHz
dB
89
Ω /□
< 0.07
ASTM F390
Shielding Effectiveness
MIL-DTL-83528C(Mod.)*
Surface Resistivity
Compression Set
%
< 20
ASTM D3574
Operation Temperature
°C
-40 to 70
-
Flame Retardant
UL 94V0 (UL file No.E170327)
Hazardous Substance
Compliant with RoHS (Directive 2002/95/EC)
Compliant with SONY SS-00259
Antimony-free
* Part tested: 5 mm H x 10 mm W, rectangle shape
COMPOSITION OF PRODUCT
W
Conductive fabric
H
Polyurethane foam
PSA tape (option)
PRESSURE SENSITIVE ADHESIVE (PSA TAPE) OPTIONS
Name
Type
Thickness (mm)
Peel strength on stainless steel
(JIS Z 0237)
Z-axis Resistance
LT-301
Conductive PSA
0.09
> 1.3 kgf/25 mm
< 0.05 Ω
LT-350
PSA
0.12
> 2 kgf/25 mm
-
*Other PSA can be provided. Contact Laird Technologies engineering.
ORDERING INFORMATION
PART NUMBER EXAMPLE
Digits:
1
4
2
2
3
1
4
6
5
A
Profile S hape & Details
6
A
-
7
5
8
1
Product
Name
9
S
-
10
0
11
1
12
4
13
0
14
0
Part Length
(inches to two decimal points)
EMI-DS-FOF-51S 0613
Any information furnished by Laird Technologies, Inc. and its agents is believed to be accurate and reliable. All specifications are subject to change without notice. Responsibility for the use and application of
Laird Technologies materials rests with the end user, since Laird Technologies and its agents cannot be aware of all potential uses. Laird Technologies makes no warranties as to the fitness, merchantability
or suitability of any Laird Technologies materials or products for any specific or general uses. Laird Technologies shall not be liable for incidental or consequential damages of any kind. All Laird Technologies
products are sold pursuant to the Laird Technologies’ Terms and Conditions of sale in effect from time to time, a copy of which will be furnished upon request. © Copyright 2013 Laird Technologies, Inc. All
Rights Reserved. Laird, Laird Technologies, the Laird Technologies Logo, and other marks are trade marks or registered trade marks of Laird Technologies, Inc. or an affiliate company thereof. Other product or
service names may be the property of third parties. Nothing herein provides a license under any Laird Technologies or any third party intellectual property rights.
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