Rutronik now stocks WPC-compliant receiving coils from Vishay

August 02, 2012 // By Julien Happich
Rutronik announced a new powdered-iron-based, WPC-compliant (Wireless Power Consortium) receiving coil for the wireless charging of 5V portable electronics from Vishay.

Optimized for the wireless charging of 5 V portable electronics, the IWAS-3827EC-50 powdered-iron-based, WPC-compliant receiving coil provides a durable construction, high permeability shielding, and high efficiency greater than 70 % for Rx applications to 10 W. Measuring 38x27mm, the device is 33 % smaller than the standard 48x32mm IWAS-4832FF-50 Rx coil. For wireless power base stations and receivers, the IWAS-3827EC-50's high-saturation powdered iron is not affected by permanent locating magnets, and the device blocks charging flux from sensitive components or batteries. As an alternative to Ferrite-based solutions - which can saturate in the presence of a strong magnetic field - the IWAS-3827EC-50 offers a magnetic saturation of 50 % at 4000 gauss. Besides it has an inductance of 10,7 µH at 200 kHz with ± 5% inductance tolerance as well as 183 mOhm DCR at +25°C.

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