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Vishay Intertechnology Introduces New Powdered-Iron-Based, WPC-Compliant Rx Coil for 5 V Wireless Charging Circuitry
New Device Features High Permeability Shielding and Efficiency Greater Than 70 %
MALVERN, Pa. — July 12, 2012 — Vishay Intertechnology, Inc. (NYSE: VSH) today announced a new powdered-iron-based, WPC-compliant (Wireless Power Consortium) receiving coil for the wireless charging of 5 V portable electronics. Offering a durable construction and high permeability shielding, the new IWAS-3827EC-50 provides high efficiency greater than 70 % for Rx applications to 10 W and is 33 % smaller than the standard 48 mm by 32 mm IWAS-4832FF-50 Rx coil, with dimensions of 38 mm by 27 mm.
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.
The RoHS-compliant device features inductance of 10.7 µH at 200 kHz with a ± 5 % inductance tolerance, DCR of 183 mΩ at + 25 °C, and Q of 30 typical at 200 kHz. The receiving coil features a lead length of 50 mm and tinned length of 10 mm.
Samples and production quantities of the IWAS-3827EC-50 Rx coil are available now, with lead times of five to eight weeks.
Vishay Intertechnology, Inc., a Fortune 1000 Company listed on the NYSE (VSH), is one of the world's largest manufacturers
of discrete semiconductors (diodes, MOSFETs, and infrared optoelectronics) and passive electronic components (resistors, inductors,
and capacitors). These components are used in virtually all types of electronic devices and equipment, in the industrial,
computing, automotive, consumer, telecommunications, military, aerospace, power supplies, and medical markets. Vishay’s product
innovations, successful acquisition strategy, and "one-stop shop" service have made it a global industry leader. Vishay can
be found on the Internet at www.vishay.com.