- Legal name
- Vishay Intertechnology, Inc.
- Founded
- 1962
- Headquarters
- Malvern, Pennsylvania, United States
- Public listing
- New York Stock Exchange — ticker VSH
- Capability layer
- Wireless power
- Relevant product line
- Wireless charging receive coils and shields · Wireless charging transmitter coils and shields
- Range published
- 29 coil and shield series, receive and transmit, across multiple size classesCounted from the company's own product table in October 2026.
- Stated shielding property
- High-permeability shielding using high-saturation powdered iron, stated not to be affected by permanent locating magnetsAs stated by the company. Not independently verified by the alliance.
- Website
- vishay.com
- Directory status
- Listed company — compiled from public information. Not a member.
What the company does
Vishay Intertechnology manufactures discrete semiconductors and passive electronic components. It was founded in 1962, is headquartered in Malvern, Pennsylvania, and is listed on the New York Stock Exchange under the ticker VSH.
Most of that portfolio — resistors, capacitors, MOSFETs, diodes, optoelectronics — is not directly about charging. One line is: the company publishes wireless charging coils and shields, in receive and transmit variants, across a range of size classes and inductance values, with high-permeability shielding.
Where it sits in the chain
Wireless power is the third layer of the industry map. It determines coil geometry, coupling, foreign object detection and thermal derating — how much energy arrives at the device, and how much is lost on the way.
The layer has an unusual property that makes the supplier's own technical material more important than usual. A coil is not a finished function: it is a component whose behaviour depends on the transmitter on the other side, the gap, the shield, and whatever metal sits behind it. A supplier that documents those dependencies is removing integration risk from its customer. A supplier that publishes only an inductance figure is transferring that risk instead.
What to check when sourcing at this layer
Shielding behaviour in the presence of a magnet array. This is the detail that matters most now, and it is easy to miss. Qi2 attaches a ring of permanent magnets to the device, and those magnets sit immediately behind the receiver coil's shield. A shield that saturates in a static magnetic field loses permeability, and the coil's inductance and efficiency shift with it — which means the product behaves differently depending on whether magnets are present. Vishay states that its wireless charging parts use a high-saturation powdered iron that is not affected by permanent locating magnets. That is exactly the property to ask every coil supplier about directly, because it does not appear in an inductance figure. Qi2 explained covers why the specification moved to magnets in the first place.
Q factor and DC resistance have to be read together. Coil efficiency depends on both. A part with a high Q and a heavy winding can lose more in resistive heating than a lower-Q part with thicker wire. Quoting one without the other says very little.
Which side of the link you are buying. Transmit and receive coils are optimised differently — one drives a field, the other harvests it — and they are not interchangeable even when the inductance values are close.
Thermal derating, not the peak figure. In a sealed charger the coil sits in an enclosure with no airflow, and the ambient inside is well above room temperature. The current a coil can carry continuously in a product is lower than what it can carry on a bench.
Note on this entry
This entry was compiled by the alliance from the public sources listed below. It was not supplied, reviewed or approved by the company. Vishay Intertechnology is not a member of the alliance, and listing is not an endorsement, a recommendation or an approval of any product.
The alliance has not tested any product from this company and does not know which coils appear in which products. The shielding statement quoted above is the company's own and has not been verified by the alliance.
Sources
This entry was compiled by the alliance from the public sources listed below. It was not supplied, reviewed or approved by the company.
- Vishay — Wireless Charging Coils product page, including the coil description, the shielding statement and the published series (accessed October 2026)
- Vishay — corporate site, covering the company's component portfolio (accessed October 2026)