May. 23, 2017

TDK Corporation has expanded its Flexield family of noise suppression sheets with an ultra-thin copper-clad laminated sheet with high magnetic permeability. The new IFM10M magnetic sheets are 60 percent thinner than existing sheets with a magnetic layer of the same thickness, but offer an equivalent noise suppression performance over a broad frequency range from 500 kHz to 10 GHz. The total thickness of the new Flexield sheets is just 0.04 mm. The size of the sheets is 300 mm x 200 mm. Volume production is scheduled to begin in June 2017.

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 Corporation. Thanks to their low profile, the new Flexield IFM10M noise suppression sheets are suitable for use in slim devices such as smartphones, tablets, notebooks and stylus pens.

As electronic devices, including smartphones, have become smaller and thinner as well as more multifunctional with a higher degree of integration, 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. In addition to noise suppression within the circuit using EMC components and standard circuit design measures and, it is essential to suppress unexpected and unwanted interference. Magnetic sheets are used to absorb noise and prevent from leaking externally or reflecting internally.

Main applications

 

• Noise suppression for electronic devices, such as smartphones, tablets and notebooks
• Input devices such as stylus pens

 

Main features and benefits

 

• Thin magnetic sheets can help to make devices thinner and lighter while maintaining highly efficient noise suppression performance over a broad bandwidth

 

Key data

 

Type	Magnetic permeability [μ’] at 1 MHz	Frequency range [MHz]	Standard size [mm]	Thickness [mm]
IFM10M-025BB300X200	100 (typ.)	0.5 to 10,000	300 x 200	0.04

About TDK Corporation

TDK Corporation is a leading electronics company based in Tokyo, Japan. It was established in 1935 to commercialize ferrite, a key material in electronic and magnetic products. TDK's portfolio includes passive components, such as ceramic, aluminum electrolytic and film capacitors, ferrites and inductors, high-frequency products, and piezo and protection components, as well as sensors and sensor systems and power supplies. These products are marketed under the product brands TDK, EPCOS, InvenSense, Micronas, Tronics and TDK-Lambda. TDK's further main product groups include magnetic application products, energy devices, and flash memory application devices. TDK focuses on demanding markets in the areas of information and communication technology and automotive, industrial and consumer electronics. The company has a network of design and manufacturing locations and sales offices in Asia, Europe, and in North and South America. In fiscal 2017, TDK posted total sales of USD 10.5 billion and employed about 100,000 people worldwide.

Downloads

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• Press release (pdf: 183.7 KB; )
• Press release (rtf: 135.0 KB; )

• Further information on the products can be found under product.tdk.com/info/en/catalog/datasheets/emc_noise-sheet_ifm_hybrid_en.pdf.

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