Hallmark Nameplate, Inc. - Membrane Switches
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Membrane Switches


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A membrane switch is an operator interface between the user and a piece of equipment. A membrane switch uses momentary keys in which a closure is sensed by the printed circuit board assembly in the equipment. It is typically produced using heat stabilized polyester as a base material with conductive inks applied for circuitry. Various layers of adhesive and conductive layers are assembled and the switch is usually covered with a graphic overlay. Standard types of a membrane switches include a non-tactile type in which the two conductive layers are separated by air, and the tactile type in which a dome element is used to close the circuit.
Standard membrane switch designs are internally vented to maintain an environmental seal.



 Capabilities  Non-tactile Switches  Tactile Switches  

Features

Indicator Lights
LED's can be embedded in the membrane switch. The LED can be mounted behind a clear window, making the natural color of the LED visible, or a color tinted window may be provided. Dead front effects are possible, allowing the light to be visible only when illuminated.

Chemical and Weather Resistant
Our membrane switches are constructed of multiple layers of polyester materials assembled with permanent acrylic adhesives. The switch construction is internally vented maintain an environmental seal.

ESD/EMI/RFI Shielding
We can provide several shield methods to resolve your particular problem. We offer conductive screen printed or die cut shielding laminates. Materials are available with or without adhesive backing.

Termination
The flexible tail on a membrane switch can be teminated with:

  • No Connector for insertion into ZIF connector
  • FCI (Berg) Connector
  • Amp Connector
  • Solder tabs

    • Acceptable Artwork File Type

    		AutoCad (.dwg, .dxf), Corel Draw (.cdr), Adobe Illustrator (.ai)

    Support Services

    		Circuit Layout, Component Integration

    Materials

    		Circuits are printed on heat stabilized polyester. Switch layers are typically .005" thick.

    Contact Rating

    		30 mA @ 30 VDC

    Circuit Resistance

    		< 5 ohms

    Circuit Resistance Nominal

    		20 ohms - 100 ohms max

    Open Circuit

    		>20 Megohms

    Dielectric

    		>250 VRMs

    Life Expectancy

    		>1 million Actuations - Tactile
    >5 million Actuations - Non-Tactile

    Actuation Force

    		6 - 16 oz. nominal

    Bounce

    		5 milliseconds nominal

    Operating Temperature

    		-40ºC to +75ºC

    Quality Assurance

    		ISO 9001:2000 Registered

    Lead Time

    		Ship in four weeks

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    hallmark nameplate, inc. | 1717 east lincoln ave. | mount dora, fl. 32757 | phone: (800) 874-9063 | fax: (352) 383-8146 | privacy policy | sitemap