Vishay Intertechnology IWAS-4832EC-50 Rx coil

Vishay Intertechnology has announced a powdered-iron-based, WPC-compliant (wireless power consortium) wireless charging receiving coil optimised for use with or without an alignment magnet. Offering durable construction and high permeability shielding, the IWAS-4832EC-50 provides high efficiency greater than 75% for the wireless charging of 7 V portable electronics. The coil has been designed into a wireless power development kit.

For higher voltage wireless power base stations and receivers, the product’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 product has magnetic saturation of 50% of inductance at 4000 gauss.

The RoHS-compliant device features inductance of 16.2 µH at 200 kHz with a ±5% inductance tolerance, DCR of 366 mΩ 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.