3M AB5050 CIRCLE-1"-250

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RFI and EMI - Shielding and Absorbing Materials are used by electronic industry to protect product performance from the disruptive effects of RF signals. Among them, the 3M AB5050 CIRCLE-1"-250 is very popular. This paper will discuss its applications and working principle.

The 3M AB5050 CIRCLE-1"-250 is a flexible shielding gasket, composed of a metalized plastic film with a conductive adhesive back layer. It has the advantages of fast installation, a wide range of temperature resistance (-40℃ to 85℃) and a long-term durability in circuit assembling even in harsh environments. As a result, it is widely used for mechanical and electrical enclosure, panel/box shielding, ground plane and antenna.

Specifically, 3M AB5050 CIRCLE-1"-250 can be used as shielded gasket for industrial enclosures, telecom modules, medical devices, power and home appliances. In addition, it can be applied as a grounding circuit for power amplifiers, as a filtering circuit to prevent ESD and improve EMI shielding performance, and also as a line filter for high speed Ethernet connection.

In terms of working principle, the conductive adhesive backing layer and the foil layer of 3M AB5050 CIRCLE-1"-250 work together to act as a barrier to the electric fields that cause interference.The conductive adhesive is electrically and thermally bonded to the surface and reconstructs the RF and EMI shielding enclosure by better connecting the conductive components. The metalized film further absorbs the electromagnetic field, refining the miniature forces from the shorter wavelength signals. The gasket completely contains the EMI and RFI, thereby preserving the EMI/RFI shielding performance inside the enclosure.

In conclusion, 3M AB5050 CIRCLE-1"-250 is a very popular product in RFI and EMI - Shielding and Absorbing Materials industry. It is widely used for shielding and grounding applications in industrial, medical and home appliances. It also has enough electrical and thermal performance to withstand long-term usage in harsh environment. Its working principle is based on the conductive adhesive layer and foil layer, thus improving the performance of electronic equipment.

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