Laminated magnetic shielding sheet reduced to 0.04mm thick

Laminated magnetic shielding sheet reduced to 0.04mm thick

Technology News |
By Nick Flaherty

The latest version of the Flexield ultra-thin copper-clad laminated sheet with high magnetic permeability offers an equivalent noise suppression performance over a broad frequency range from 500 kHz to 10 GHz. This can help to boost the performance of low power radio systems by shielding brad spectrum noise that interferes with the weak signal. The magnetic sheets can also be used to absorb noise and prevent from leaking externally or reflecting internally in designs that are decreasing in size.

This improvement was made possible by TDK’s unique laminated design: The IFM10M sheet consists of a magnetic layer and a copper-plated layer of polypyrrole resin and no longer requires a layer of double-sided tape. With these sheets TDK has succeeded in creating an ultra-thin copper cladding of just 1 µm based on plating process technology developed by Achilles in Tokya. The low profile means the sheets are suitable for use in slim devices such as smartphones, tablets, notebooks and stylus pens where the need for better and more efficient noise suppression is growing, for example, to ensure the reliable function of NFC (near-field communication) and wireless charging in the same device.

The sheets are 300 x 200 mm and 0.04mm thick, and volume production is scheduled to begin in June 2017.

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