4789AC51K Laird Technologies, 4789AC51K Datasheet - Page 8

• Manufacturer Part Number: 4789AC51K
• Description: GASKET, FOAM, 1M
• Manufacturer: Laird Technologies

Specifications of 4789AC51K

• Suppressor Type: I/O Gasket
• Body Material: Soft Urethane
• Attenuation: 90dB
• Width: 9.5mm
• Length: 1m
• Depth: 6.4mm
• Svhc: No SVHC (18-Jun-2010)
• External Depth: 6.4mm
• External Width: 9.5mm
• Shielding Type: EMI Shielding
• Gasket Material: Fabric Over Foam
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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www.lairdtech.com
METALLIZED CONDUCTIVE PRODUCTS
METALLIZED FABRIC-OVER-FOAM SHIELDING GASKETS
Laird Technologies is a fully integrated manufacturer of profile and
Input/Output (I/O) EMI shielding gaskets. The metallized Fabric-
Over-Foam product line has been expanded greatly due to our
committed efforts in new product development and meeting or
surpassing regulatory requirements.
This catalog is designed to provide helpful information to
engineers on our expanded product line. In this section, you will
find benefits for Fabric-Over-Foam gaskets, material options and an
extensive list of profile and I/O sizes and configurations.
Laird Technologies specializes in quick turnaround of custom
shapes and sizes of EMI shielding gaskets. If you don’t find
exactly what you need, our engineers will help you design the
right solution to your shielding problem.
A sampling for standard profiles are shown; custom configurations
and sizes can be designed to meet your specific requirements.
Profiles are shown in ascending order by height (starting on page
9).
Benefits of Fabric-Over-Foam Gaskets
Shielding effectiveness of >100dB across a wide spectrum of
frequencies (MIL-STD 285 mod.) (see figure 1).
Extremely low compression forces allow for use of lighter
materials (see figure 2).
Low Surface Resistivity of <0.07 ohms/square
provides improved conductivity (ASTM F390).
Wide range of flame retardant gaskets available
(UL recognized per UL94 V0 or UL94 HB). UL yellow cards
available on request.
Abrasion resistant metallized fabrics show virtually no degrada-
tion in shielding performance after 1,000,000 cycles (ASTM
D3886).
Urethane & Thermoplastic Elastomer (TPE) cores provide low
compression set ensuring long-term reliability of gasket
performance. Contact Engineering for profile specific data.
Service temperatures from -40°F to 158°F
(-40°C to 70°C).
Available in Nickel/Copper (Ni/Cu) and Tin/Copper (Sn/Cu) to
ensure galvanic compatibility with a wide variety of host materi-
als. Both versions display no significant performance degrada-
tion after environmental exposure per the Accelerated Aging
Test (ASTM B845).
Prototype samples can be provided quickly utilizing laser tech-
nology, CAD/CAM equipment, and customer supplied drawings
in DWG
®
, DXF
®
, IGS, PRT
®
, DRW
®
, STP
®
, and CT
®
file formats.
Profile and I/O gaskets are available with a variety of pressure
sensitive adhesive (PSA) tapes, including Easy Peel
wide release liner to facilitate quick assembly.
Profile gaskets can be cut to specified lengths,
kiss-cut on release liner, or mitered to form
frame configurations.
Fabric-Over-Foam gaskets are RoHS compliant.
Figure 1
Shielding Effectiveness per MIL-STD-285 (mod.)
D Shape — Profile # 4789
Frequency (MHz)
®
with extra