SOURCE: Vishay Intertechnology, Inc.

Vishay Intertechnology, Inc.

September 29, 2011 11:00 ET

Vishay Intertechnology Introduces Industry-First Powdered-Iron-Based, WPC-Compliant Rx Coil for Wireless Charging

New Receiving Coil Works With or Without Alignment Magnet, Offers High Permeability Shielding and Efficiency Greater Than 70 %

MALVERN, PA--(Marketwire - Sep 29, 2011) - Vishay Intertechnology, Inc. (NYSE: VSH) today announced the industry's first commercially available powdered-iron-based, WPC (Wireless Power Consortium)-compliant wireless charging receiving coil optimized for use with or without an alignment magnet. Offering a durable construction and high permeability shielding, the new IWAS-4832FF-50 provides high efficiency greater than 70 % for the wireless charging of ≤ 5 W portable electronics.

The Rx coil released today has been designed into a leading wireless power development kit. For wireless power base stations and receivers, the IWAS-4832FF-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-4832FF-50 offers a magnetic saturation of 50 % at 4000 gauss. The RoHS-compliant device features inductance of 9.7 microhenries at 200 kHz with a 5 % inductance tolerance, DCR of 200 milliohms at + 25 °C, and Q of 30 min. at 200 kHz. The device features a lead length of 50 mm and tinned length of 10 mm.

Samples and production quantities of the IWAS-4832FF-50 Rx coil are available now, with lead times of five to eight weeks. Follow Vishay at

Vishay Intertechnology, Inc., a Fortune 1,000 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

Link to datasheet: (IWAS-4832FF-50)

Link to product photo: