Polyester Dome Tactile Switches
Performance + Affordability
An exclusive Xymox manufacturing process produces the industry’s highest quality polyester tactile domes in the graphic layer. This provides switch users with a keypad that has a strong, uniform tactile feel and a choice of standard or high temperature performance at an affordable price. The combination of in-house design & manufacturing means shorter lead times.
Polyester Dome Tactile Switches Features and Benefits
Dual Purpose - when the dome is formed in the overlay itself, the dome switch helps the user identify the key location and provides tactile feedback.
Consistency - thanks to our in-house designed and manufactured equipment, we can produce a consistent dome switch from keypad to keypad and order to order.
Withstands High Temperature - because we use a proprietary forming process developed in-house, the polyester is molecularly reshaped into the geometry of the dome, thus the “memory” of the plastic sheet is in the geometry of the dome.
Crisp Tactile Feel - due to the process and the dome geometries developed, we can ensure a firm “snap” throughout the specified life of the switch.
Reliability - tested beyond 2 million actuations.
Design Flexibility - We can custom design our dome switches to meet any of our customers requirements . And additional domes on a given part can be added with little or no increase to the piece price.
Specifications of Polyester Dome Tactile Switches
Switch Travel: .025 - .037” Typ.
Switch Thickness: .025 - .050” Typ.
Operating Force (see chart below)
Life Cycles: >2,000,000
Electrical Characteristics (Switch Circuit)
Contact Resistance: varies proportionately with part size, typically 100 ohms or less. Resistance values are typical through the life of the switch.
Open Circuit Resistance: 5x106 ohms minimum.
Contact Rating: 30 DVC maximum,100mA maximum, 1 watt maximum
Contact Bounce: 10ms nominal, 20ms maximum at 2,000,000 activation cycles.
Standard Dome Offering for Graphic Domes
Round Graphic Domes
Oval Graphic Domes
The material used in each case is polyester. Polycarbonate is not recommended because of its limited life cyclability.
Data is based on the use of a printed texture on the faceplate surface. This adds about .001” to the thickness of the graphics layer. If no texture is used, you can expect a slight decrease to the nominal force.
Actuation force measurements for round domes are based on standard Xymox test methods. A flat tipped nylon actuator that is half the dome diameter is used to measure force.
For actuation forces on oval domes .600” in length and below, force is measured with a flat tipped nylon actuator that is half the dome width. For ovals greater that .600” length, force is measured with a .250'' diameter nylon tip.