Delivery Time:3-5 days
Certification:CE,FCC,MSDS
Flexible Tactile Membrane Switch , Embedded LED Membrane Keypads
LED Membrane Switch Structure
1. Graphic Overlay - Polyester is usually the material of choice due to its superior chemical resistance and flex life compared to polycarbonate.we can either digitally print, screen-print, or employ a combination of both methods to ensure you get the right colors, textures and finishes your design requires.
2. Overlay Adhesive - This adhesive layer bonds the graphic overlay to the top circuit layer, and is typically an acrylic adhesive.
3. Top Circuit Layer - This is a 0.005\" - 0.007\" heat stabilized polyester printed with silver-filled electrically conductive inks and also dielectric inks.
4. 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.
5. Lower Circuit Layer - This is a 0.005\" - 0.007\" 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 PCBs or other electronics
6. Rear Adhesive Layer - This adhesive layer bonds the entire membrane switch package to the product enclosure, housing, or to a rigid support panel.
7. Rigid Support Layer - This optional layer can add structural integrity to the membrane switch assembly.
LED Membrane Switch Parameter
Certification | ISO9001, ISO14001 & ROHS. |
Components | LED, metal dome, connector and circuit, all these can be designed and made according to customer requirements. |
Electronic characteristics |
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Circuit rating | 35V(DC),100mA,1 W |
Contact resistance | 10Ω - 500Ω(According the trace length and materials to confirm) |
Insulation resistance | >100MΩ 250V(DC) |
Contact bounce | ≤5ms |
Dielectric withstand | 250VRms(50 - 60Hz/1 min) |
Life expectancy | flat type≥5million times, tactile type:≥1 million times |
Mechanical Properties |
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Operating pressure | flat type 57-284g (2-10 Oz),tactile type 170-397g (6-14 Oz) |
Switch stroke | flat type 0.1 - 0.5mm, tactile type 0.6 - 1.5mm |
Environmental parameters |
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Operating Temperature | -20°C - +80°C |
Storage temperature | -40°C - +85°C |
Humidity | 40°C,90%-95%,240 hours |
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