Double Layer
This type of dome array (metal dome sheet) is somehow similar to single layer type by means of metal dome contacts attached under Maylar. But the difference is that, in this type, the Spacer is attached under the metal dome contacts. Air paths which function like air holes in single-layer, helps provide good click-feeling when dome contacts are pressed. Besides this effect, air paths help reduce the chance for PET film being damaged by metal dome contacts' burr and block dust coming into PET films.
We not only put several dome on a array, but also put just one piece per array, so that customer can just peel off each piece and put it on key location of Keyboard/FPC/PCB. For more information, please email us.
Character:
1. Light & small
2. Damp proof, heatproof, cold proof
3. Dustproof is done on the Metal Dome, and oxygenation of Metal Dome has been avoided
Structure
Technical Parameter
Total Height:
Travel:
Scope of Force:
Tolerance of Force:
Click Ratio:
Life Cycles:
Salt and Fog Examination:
Working Temperature:
Working Humidity:
Touch Resistance:
ESD Resistance:
Dimension Tolerance: |
0.28-0.45 mm
0.13-0.30 mm
100-400 gf
25 gf
>30%
>1 Million Cycles
v352C, 50.1%, 48H
-20C-50C
Under 100%RH
<1 ohm
<3 ohm
0.05-0.15mm |
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Membrane Switches