Vishay Intertechnology announced a new powdered-iron-based, WPC-compliant (Wireless Power Consortium) wireless charging receiving coil designed for 10 W applications. Offering a durable construction and high permeability shielding, the new Vishay Dale IWAS-4832FE-50 provides high efficiency greater than 70 % for wireless charging up to 10 W for portable electronics, including tablets, notebook computers, and handheld medical equipment.
The IWAS-4832FE-50’s high-saturation powdered iron is not affected by permanent locating magnets, and the device blocks charging flux from sensitive components and batteries. As an alternative to ferrite based solutions − which can saturate in the presence of a strong magnetic field − the IWAS-4832FE-50 offers a magnetic saturation of < 50 % at 4000 gauss.
The RoHS-compliant device features inductance of 15 µH at 200 kHz with a ± 5 % inductance tolerance, DCR of 255 mΩ at + 25 °C, and Q of 60 minimum at 200 kHz. The IWAS-4832FE-50’s rated current of 2 A enables 10 W of charge at 5 V. The receiving coil features a lead length of 50 mm and tinned length of 10 mm.
