Electronic Scale External Control Metal Dome Membrane Switch 

Quick Details

Overlay Material: PET / PC / Autotex F200 XE

Rear Adhesive: 3M467MP / 3M468MP / 3M300LSE, etc.

Thickness: Customized

Color: PMS and RAL color matching system

Others: LED / LCD / transparency window LED light

Application: Electronic scale exterior control panel

Typical  Specification of Membrane Switch

Specifications will vary depending on materials, construction and circuitry. Please consult Maxswall Engineering for unique characteristics.

ELECTRICAL

• Operating Voltage: 0-30 VDC.

• Operating Current: 100 MA Max.

• Operating Contact Resistance: Less than 100 OHMS typical (measured at the connector).

• Contact Bounce: Less than 10 Milliseconds typical.

• Conductors: Printed silver conductive inks or carbon blend (PC board assemblies available).

• RFI and Static Shielding available in most configurations.

MECHANICAL

• Life Expectancy: Douglas guarantees 1,000,000 actuation per switch position or 12 months.

• Actuation Force: 2 -16 oz. range available — depending on customer specification. (4 - 8 oz. is considered medium actuation force for non-tactile configuration).

• Switch Travel: .005" to .030" typical.

• Overall Thickness: .020" to .050" typical.

ENVIRONMENTAL

• Storage Temperature: -40°C  to +80°C

• Storage Altitude: Sea level to 40,000 feet.

• Operating Temperature and Altitude: Variable depending on customer requirements (can be designed to operate in most environments).

• Humidity: No delaminating after 24 hours at 85°C and 85%RH.

• The specifications above are general. For information on more specific applications, contact one of Douglas Corporation's design engineers. 

Our Best Service

• Custom design expertise

• Single source manufacturing

• Assembly of surface mount components/circuit boards/back plates

• Multi-tasking switch pattern designs

• Custom molded boxes, bezels and frames with switch installation

• Precise color matching and repeatability

• Water resistant designs to Nema 4

• Fiber optic back-lighting

• 100% function testing of all circuits in-house