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        1. Dome Arrayse - Double Layer

          This type of dome array (metal dome sheets) is somehow similar to single layer dome array by means of snap dome contacts attached under Maylar. But the difference is that, in this type, the Spacer is attached under the snap contacts. Life testing has shown an increase in the ability of this design to retain the dome on the circuit over the traditional spacer design and an even higher increase in this retention ability over simple domes on adhesive.

          Characters of double layer dome array:

          1. Light & small
          2. Damp proof, heatproof, cold proof
          3. Dustproof is done on the snap dome, and oxygenation of snap dome has been avoided
          Structure of dome araray
          double layer dome array
          Technical Parameter of Dome Array:
          Total Height: 0.28-0.45 mm
          Travel: 0.13-0.30 mm
          Scope of Force: 100-400 gf
          Tolerance of Force: ±25 gf
          Click Ratio: >30%
          Life Cycles: >1 Million Cycles
          Salt and Fog Examination: v35±2°C, 5±0.1%, 48H
          Working Temperature: -20°C-50°C
          Working Humidity: Under 100%RH
          Touch Resistance: <1 ohm
          ESD Resistance: <3 ohm
          Dimension Tolerance: ±0.05-±0.15mm
          double layer dome array
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