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Capacitive Switches

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They are a part of “capacitive sensing technology,” a technology in electrical engineering. Capacitive sensing can detect and measure anything that is conductive or has a dielectric constant different from the air, known as changes in capacitance. Read More…

Capacitive Switches Capacitive switches are switches that need only be touched to carry out an action on a control panel.
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Leading Manufacturers

Eden Prairie, MN  |  800-806-6113

Our membrane switches are known for their high-quality and affordable prices. We work hard to find the precise parts that will work with your every need. It is our goal to create a relationship with you that is beneficial to both parties.

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ALUDEC USA $$$

Perry, NY  |  800-227-5718

JN White is an ISO 9001:2015 and ITAR-certified manufacturer of membrane switches, graphic overlays, and custom labels. We nimbly handle projects big and small and have the uncommon ability to translate what our customers need into high-quality, high-precision outcomes.

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JN White $$$

Watertown, CT  |  800-853-5617

ECI Technologies is a leading designer and manufacturer of innovative membrane switches, graphic overlays and electronic interfaces. We can produce tactile and non-tactile switches and keypads, as well as add features such as backlighting and environmental protection. We also offer quick-turn prototype design and production. Since 1991, we have been serving industries such as industrial, medical, military, and avionics.

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ECI Technologies $$$

Santa Ana, CA  |  800-228-6693

Membrane switches are our business, and for over 40 years we have remained a leading manufacturer in our industry. We credit our success to our innovative products, manufacturing techniques, and dedication to customers. We have a mission of providing the most competitive prices and expert engineering in the business today.

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Weber Precision Graphics $$$

Chaska, MN  |  800-959-0108

Founded in 1972, Dyna-Graphics is a world leader in membrane switch technology. Dyna-Graphics’ membrane switch technology product line includes rubber keypads, graphic overlays, touch screens, printed circuit boards, printed circuit board assemblies, and flexible printed circuit boards for membrane switches and rubber keypads, as well as environmentally sealed membrane switches.

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Dyna-Graphics Corporation $$$
placeholder image ALUDEC USA JN White ECI Technologies Weber Precision Graphics Dyna-Graphics Corporation

In the case of capacitive switches, this sensing is based upon the constant monitoring of the electrical capacity of the touch area, which is changed by the touch of a human finger.

Generally under the umbrella of touch switches, capacitive switches are among the simplest kinds of tactile sensors. Some capacitive switches can work without actual touch, simply by detecting an object, such as a finger, in its field.

Capacitive Switch Panels Capacitive Switch Panels - Douglas Corporation

Touch surfaces of capacitive switches can be designed with virtually any material, as long as it is dielectric. This includes glass, plastic, polycarbonate, wood, marble or any rough or smooth surface less than 25 mm thick.

Some capacitive switches are designed to have adjustable surface sensitivity, so that whatever device they are supporting can be operated with or without gloves. This is an especially attractive quality in northern climates or in a setting where an operator needs to wear gloves for protection. Because capacitive switches work through sensing, they do not contain any mechanical components, which eliminates potential mechanical failure.

These switches consist of three main sections: the graphic overlay, the circuit and the backer, or back panel. The overlay displays graphics and can also feature windows, embossings, coatings, adhesives and selective texturing. Overlay materials may be air, formica, standard glass, ceramic glass, PET film, polycarbonate, plexiglass, ABS, wood or gypsum. The circuit is the switch itself, which may be a Flexible Printed Circuit (FPC) or a Printed Circuit Board (PCB).

Capacitive switches are utilized in the aerospace, defense, industrial, medical, telecommunications, data/communications and consumer industries. As interface types, they often work as: buttons, sliders, touch pads, touch screens and proximity settings. Some specific examples of where they may be found include: wireless handsets, PC peripherals, LCD monitors, TVs, laptops, digital cameras, and kiosks.

When considering the design of a capacitive switch, helpful things to consider are: environmental conditions, mechanical requirements, electrical requirements, appearance and certification.

Capacitive Switches Informational Video