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Home > Wireless charging > Transmitter Coil saves space in Qi wireless charging pads.

Transmitter Coil saves space in Qi wireless charging pads.

Published time: 2019-12-20 12:00:01

Transmitter Coil saves space in Qi wireless charging pads.

MALVERN, Pa. —  Vishay Intertechnology, Inc. (NYSE: VSH) today introduced a new powdered-iron-based, WPC-compatible (Wireless Power Consortium) wireless charging A11 type transmitter coil for 5 V applications. AEC-Q200 qualification is pending. Offering a durable construction and high permeability shielding, the new Vishay Dale IWTX-47R0BE-11 6.3 µH is 18 % smaller than other solutions on the market to save space in Qi wireless charging pads, while providing high efficiency greater than 70 % when paired with a Vishay Rx coil and appropriate Qi-compatible Rx and Tx circuitry.

Designed for use in conjunction with Vishay's WPC-compatible wireless receiver coils, the IWTX-47R0BE-11 6.3 µH's high-saturation powdered iron is not affected by permanent locating magnets. As an alternative to larger ferrite-based solutions — which can saturate in the presence of a strong magnetic field — the IWTX-47R0BE-11 6.3 µH offers a magnetic saturation of 50 % at 4,000 gauss.

The RoHS-compliant device features low inductance of 6.3 µH at 200 kHz with a + 5 % inductance tolerance, DCR of 38 mΩ (± 10 %) at + 25 °C, and Q of 190 typical at 200 kHz. The transmitter coil features a lead length of 47 mm and tinned length of 5 mm, and self-resonant frequency of 22 MHz.

Samples and production quantities of the IWTX-47R0BE-11 6.3 ìH Tx coil are available now, with lead times of 14 weeks for large orders. Pricing for U.S. delivery only is $2.75 per piece in 1,000-piece quantities.

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. 


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