New UL94 V0 flame rated materials

Shielding materials combine microwave and RF absorption with design flexibility

Shielding materials combine microwave and RF absorption with design flexibility Chomerics Europe has complemented its industry leading range of shielding solutions with the introduction of two, UL94 V0 flame rated materials.

Cho-mute 9005 and Cho-mute 9025 are elastomeric materials specifically designed to deliver microwave and radio frequency absorption.

They are unique in their ability to absorb low (below 1GHz) frequencies.

The new high permeability, wide band attenuation materials can be used to eliminate EMI and EMC problems in transmitters, transceivers, microcontrollers and microprocessors.

Potential applications include: handheld electronics devices such as wireless voice or data telecoms equipment, infotainment and PDAs.

Applications also exist in military electronics, antenna performance plus office and telecoms infrastructure equipment.

Cho-mute 9005 provides up to 25dB of absorption across a frequency range of 500MHz to 18GHz, whilst Cho-mute 9025 gives a maximum of 20dB absorption between frequencies of 30MHz and 12GHz.

Both materials are efficient at absorbing RF surface wave currents, free space electromagnetic waves and energy in a resonant cavity.

Cho-mute 9005 and 9025 use a high-tech silicone polymer that is lightweight and provides a high degree of design flexibility.

The UL94 V0 flame rated and RoHS compliant materials can be supplied in standard size sheet (thickness range 0.25mm to 3.2mm), with or without an adhesive backing, or as complex moulded custom shapes.

Cho-mute can also be over-moulded onto metal or plastic substrates.

Operating temperature range for both Cho-mute 9005 and 9025 is -50C to +160C.

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