WE-FSFS Flexible Sintered Ferrite Sheets

Würth Elektronik’s eiSos flexible sintered ferrite sheets (WE-FSFS) are products designed for high-performance magnetic flux redirection. The correct management of the magnetic flux improves the energy and data transfer in inductive coupled systems (NFC, RFID, Wireless Power, and others), achieving a higher-efficiency and communication range. Size and weight are critical parameters in today's electronic devices, and with the last generation ferrite compositions used in WE-FSFS, optimal results are achieved with minimal thickness.

Applications Notes: Selection and Characteristics of WE-FSFS

The WE-FSFS are composed of three layers:

• PET protective layer: High surface resistivity and adhesive strength to protect the ferrite layer
• Pre-cut sintered ferrite layer: The core of the product; its magnetic properties concentrate and control the external magnetic fields
• Adhesive layer: High adhesive strength to protect the ferrite and to apply the product