Wurth Electronics' 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
Characteristics
- Flexible ferrite sheet with adhesive tape
- High permeability
- Low losses at communication frequency
- Easy to apply adhesive mounting tape
- Custom designs on request
- Operating temperature: -40°C to +85°C
Applications
- Improves efficiency of wireless power transfer (Qi-WPC, PMA, A4WP, WCT)
- Improves performance of NFC and RFID communication systems
- EMI suppression
- Magnetic shielding