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Electric Fittings And Components

We offer the best product range of Capacitive Switches, Dome Switches and Sealed Keyboards Using Snap Domes.

Capacitive Switches

  • Output Active High/Low, UART, I2C.
  • Supply Voltage 5-24 VDC
The working of these capacitive switcheskeyboards is based on Charge Detector (CD) technology. When any user touches the key switch area the capacitive charge from the users body is detected by a specially developed circuit, and the signal is passed on to the system. The solid state nature of the circuit makes the life of such a switch virtually infinite.
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Dome Switches

  • Current/Voltage Rating 10 mA at 24 VDC (Max)
  • Key Travel 380 microns.
  • Operating Temperature -20oC to + 65oC.
These Keyboards comprise of a snap dome switch and a gold plated glass epoxy PCB for base and circuit. Snap Dome Switches (Special SS Alloys) are mounted and sealed on a gold plated PCB to conduct the signals in the keyboard circuit. The switch contacts can be terminated on any type of solderable connector which can be then interfaced with the controller. This entire assembly is then covered by a polyester overlay using industrial grade adhesives.
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Sealed Keyboards Using Snap Domes

  • Contact Arrangement SPST, Normally Open.
  • Current/Voltage Rating 10 mA at 24 VDC (Max) in to resistive load only
  • Contact Resistance Compatible with MOS, TTL & DTL Circuits.
  • Contact Bounce Less than 10 milliseconds at make & 20 milliseconds at break.
  • Key Travel 380 microns.
  • Life Expectancy One million to 3 million operations per switch.
  • Operating Pressure 180-280 gram force.
  • Operating Temperature -20oC to + 65oC.
  • Humidity 95% RH at 40oC.
  • Base Glass Epoxy PCB FR4 Grade in thicknesses ranging from
  • ranging from 0.4 mm to 3.2 mm.
  • Plating Gold Over Nickel; Bright Acid Tin.
  • Adhesives Industrial Grade from 3M.
  • Overlays Different types of Polyesters from Autotype

These Keyboards comprise of a snap dome switch and a gold plated glass epoxy PCB for base and circuit. Snap Dome Switches (Special SS Alloys) are mounted and sealed on a gold plated PCB to conduct the signals in the keyboard circuit. The switch contacts can be terminated on any type of solderable connector which can be then interfaced with the controller. This entire assembly is then covered by a polyester overlay using industrial grade adhesives.

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