Membrane Switches - Silver Flex

Membrane Switches - Silver Flex

 
Why Technigraphics?

Technigraphics designs, manufactures and tests custom silver flex membrane switches and flexible membrane keypads in our Hunt Valley, MD facility. We statistically monitor and control our production processes, inspecting 100% of your products electrically and cosmetically. Additionally we can utilize our off-shore manufacturing partners for producing larger-volume projects. The result is that you receive your products on time at a competitive price. You'll enjoy how easy we are to work with!

Silver Flex Membrane Switches

Silver Flex Membrane Switches

Silver Flex membrane switches are the most common design for flexible, custom membrane keypads. This membrane switch design features very thin flexible layers of material that save you space in your product design. Additionally Silver Flex membrane keypads and tactile flex switches are usually the most cost-effective of the various membrane keypad designs, and especially when compared to bulky, costly electromechanical switch assemblies. This saves you money and precious design space.

Silver Flex Membrane Switches

Silver Flex membrane switch panels utilize screenprinted silver and carbon conductive inks printed on flexible polyester layers separated by an adhesive spacer. Silver Flex membrane switches offer you a variety of design options:

A typical Silver Flex membrane switch design consists of the following layers:

  • Graphic Overlay - polyester is usually the material of choice due to its superior chemical resistance and flex life compared to polycarbonate. Technigraphics can either digitally print, screenprint, or employ a combination of both methods to insure you get the right colors, textures and finishes your design requires.
  • Overlay Adhesive - this adhesive layer bonds the graphic overlay to the top circuit layer, and is typically an acrylic adhesive.
  • Top Circuit Layer – this is a .005" - .007" heat stabilized polyester printed with silver-filled electrically conductive inks and also dielectric inks. This layer can also encapsulate metal domes or incorporate polydomes used to achieve tactile feedback.
  • Circuit Spacer – this layer separates the top circuit from the bottom circuit so the switch remains normally open until the keypad is pressed. The circuit spacer is a polyester spacer with adhesive on both sides.
  • Lower Circuit Layer - this is a .005" - .007" heat stabilized polyester printed with silver-filled electrically conductive inks and also dielectric inks. This layer terminates as a flexible tail that serves as the interconnect to controller PCB's or other electronics.
  • Rear Adhesive Layer - this adhesive layer bonds the entire membrane switch package to the product enclosure, housing, or to a rigid support panel. Technigraphics can specify the appropriate adhesive type and thickness to bond your membrane keypad to your equipment.
  • Rigid Support Layer – this optional layer can add structural integrity to the membrane switch assembly. Materials can be aluminum, FR-4, steel, etc. Mounting hardware such as studs and standoffs can also be utilized in this layer.

Material Choices – click here to see more information about the materials you can choose from to design your custom membrane switch.

Contact us now for a quotation or sample requests, or for any additional information you need.

 

Material Choices & Options

To get information and technical data on our materials, click here » › Material Info

Silver Flex Membrane Switches Specifications

Typical Silver Flex Membrane Switches Value Ranges

Mechanical
Actuation Force4 - 16 oz.
Switch Travel.007 - .011 in.
Switch Life*3,000,000
Electrical
Contact ConfigurationSPST Normally Open
Contact Rating5 - 24 VDC, 1 - 150mA, 1 watt
Contact Bounce‹ 20 ms
Circuit Resistance5 - 1000 ohms
Capacitance‹= 50 pf
Environmental
Storage Temp.-40C - +80C
Operating Temp.-30C - +60C

* Switch life may vary depending on tactile dome material (steel or polyester), spacer thickness, spacer hole diameter, and graphic overlay thickness. Operating at extreme ends of the specified temperature ranges may cause a reduction in switch life.

Technigraphics has partnered with membrane switch manufacturer Pannam Imaging. Read more here.

 
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