Circuit & System Protection


Conductive elastomers shield enclosures

30 May 2012 Circuit & System Protection

Electrically conductive elastomers are used for shielding electronic enclosures against electromagnetic interference (EMI). They provide environmental sealing and excellent mechanical and electromagnetic shielding properties.

Laird Technologies offers a wide variety of conductive filler materials in extruded, moulded die-cut, dispensed form-in-place, printed and coated formats.

Usually, the shielding system consists of a conductive gasket sandwiched between a metal housing and lid. The primary function of these gaskets is to provide sufficient electrical conductivity across the enclosure/gasket/lid junction to meet grounding and EMI shielding requirements, as well as to prevent fluid intrusion into the electrical components.

Laird Technologies offers ElectroSeal and ElectroMet ranges. ElectroSeal are dispersed filler particles in elastomers and ElectroMet is an oriented wire in solid and sponge elastomers, and impregnated wire mesh and expanded metals. These products are suitable for both military and commercial applications requiring both environmental sealing and EMI shielding.

Compounds can be supplied in moulded or extruded shapes, sheet stock, custom extruded or die-cut shapes to meet a wide variety of applications.

The product offering from Laird Technologies meets a wide range of customer requirements. The classifications of the most common materials are based on cost and specific applications. There are over 30 compounds available.

Conductive extrusions offer a wide choice of profiles to fit a large range of applications. Custom dies can be built to accommodate customers’ specific designs. They are available in a wide variety of conductive filler materials with shielding effectiveness up to 120 dB at 10 GHz.



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Clearing the Static: Staying grounded: Ensuring effective ESD control
Actum Electronics Circuit & System Protection
To maintain reliable electrostatic discharge control, regular testing and accurate measurement are essential, with grounding products and ESD testing equipment being vital.

Read more...
Clearing the Static: ESD component safety in storage and transportation
Actum Electronics Circuit & System Protection
Conductive containers create a Faraday cage effect, safely channelling electrostatic charges away from the components inside.

Read more...
Film and mica capacitors
Actum Electronics Passive Components
By utilising various polymer dielectrics plastics, Exxelia film and mica capacitors meet most technical requirements and serve all functions from standard filtering to specialised applications.

Read more...
Clearing the Static: Conductive foot, heel and shoe grounders
Actum Electronics Circuit & System Protection
Conductive foot, heel and shoe grounders are used in electrostatic discharge protected areas to provide a path to ground for static electricity.

Read more...
LED driver for industrial power supply indication
Altron Arrow Editor's Choice Circuit & System Protection
A simple and small solution for driving an LED to provide visual feedback in the presence/absence of a system’s power using a chip not originally designed for this purpose.

Read more...
Clearing the Static: Cleaning in an ESD-protected area
Actum Electronics Circuit & System Protection
Cleaning in a protected electrostatic discharge area is a critical task to maintain the integrity of sensitive electronic components and prevent damage caused by static electricity.

Read more...
ESD vinyl flooring
Actum Electronics Manufacturing / Production Technology, Hardware & Services
ESD vinyl needs to be earthed by laying a conductive carbon or copper-based adhesive to glue down the sheeting.

Read more...
ESD chair
Actum Electronics Manufacturing / Production Technology, Hardware & Services
An ESD chair forms an integral part of grounding within the ESD protected area to prevent damage to sensitive components.

Read more...
Clearing the Static: Key principles of ESD control in electronics manufacturing
Actum Electronics Circuit & System Protection
Effectively managing electrostatic discharge is essential in electronics manufacturing to ensure not only product reliability, but also worker safety.

Read more...
Clearing the Static: Three steps for a dry ESD packaging system
Actum Electronics Circuit & System Protection
For optimal storage, it’s essential to complete the dry-packaging system by adding Desiccant Packs and Humidity Indicator Cards.

Read more...