SOFT-SHIELD® 3500 Plated-Fabric Wrapped Foam Economical EMI Shielding Gaskets for Electronics0 pages

Leader in EMI Shielding and Thermal Management
Tech Bulletin - SOFT-SHIELD® 3500
North America• 77 Dragon Court, Woburn, MA 01888-4014 TEL +(1) 781-935-4850 FAX +(1) 781-933-4318
Europe• Marlow, Bucks, UK TEL +(44) 1628 404000 FAX +(44) 1628 404090
Asia Pacific • Hong Kong TEL +(852) 2 428 8008 FAX +(852) 2 423 8253
South America• São Paulo, Brazil TEL +(55) 11 3917 1099 FAX +(55) 11 3917 0817
www.chomerics.com
SOFT-SHIELD® 3500
Plated-Fabric Wrapped Foam
Economical EMI Shielding Gaskets for Electronics
DESCRIPTION
SOFT-SHIELD® 3500 Series low-closure
force EMI gaskets are the newest addition
to the Soft-shield family of products.
SS3500 offers a cost competitive solution
for EMI shielding in high volume
commercial electronic applications.
Gaskets consist of nickel-plated nylon
wrapped around a urethane foam core.
SOFT-SHIELD 3500 typically requires
less than 1 lb/in (0.175 N/mm) closure
force, making it effective for thin walled
plastic enclosures.
SOFT-SHIELD 3500 gaskets are currently available in over 90 profiles. Dimensions of offered profiles are
listed on the back of this bulletin. Contact the Chomerics samples department for availability of samples.
A full range of SOFT-SHIELD EMI gaskets is available for optimum solutions to different application needs.
APPLICATION
SOFT-SHIELD 3500 gaskets are supplied with pressure sensitive adhesive (PSA) for easy application.
Before mounting, flange surfaces
should be cleaned with isopropyl
alcohol (IPA) solvent. The gaskets
can be removed for rework using a
single-edged razor. NOTE:
Alternate application processes are
available; please contact Chomerics
Applications Engineering at 781-935-
4850 for assistance.
BENEFITS
• Low closure force
• Low cost
• Selection of commonly used
profiles
• Available in standard lengths,
cut-to-length, die-cut, and kisscut
on sheets for peel and stick
applications
Typical Properties SOFT-SHIELD 3500 Test Method
Shielding Effectiveness,
50 MHz to 10 GHz
> 90(dB)
CHO-TM-TP08
35% Compression
Deflection,
lb/in (N/mm), [0.125 x
0.375 in. gasket]
< 1 (<0.175) ASTM C165
Compression Set
• Foam
• Gasket assembly
<10%
<25%
ASTM D3574
Operating Temperature
Range
-40o to 70o C -
Adhesive Peel Strength,
90°b/inch (N/mm) [Min.
value]
4 (0.7) ASTM D1000