Polyester Dome Tactile Switches

polyester dome tactile switches

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 strong, uniform tactile feel and a choice of standard or high temperature performance at an affordable price. And the combination of in-house manufacturing and design 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

  • Mechanical
    • Life Cycles: >2,000,000
    • Operating Force (see chart below)
    • Switch Thickness: .025 - .050” Typ.
    • Switch Travel: .025 - .037” Typ.
  • Environmental
  • STD TEMP DOMEHIGH TEMP DOME
    Storage -40°C to 65°C -40°C to 85°C
    Operating -40°C to 65°C -40°C to 70°C
  • 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

Dome
Diameter
Dome
Number
Nominal
Force
(Ounces)
Force
Range
(Ounces)
0.300” 3005L 10 - 12 ±3
  3005R 14 - 16 ±3
  3007H 16 - 18 ±3
0.375” 3755L 10 - 12 ±3
  3757R 15 - 17 ±3
  3757H 22 - 24 ±4
0.400” 4005L 10 - 12 ±3
  4007R 14 - 16 ±3
  4007H 22 - 24 ±4
0.440” 4405L 10 - 12 ±3
  4407R 16 - 18 ±3
  4407H 22 - 24 ±4
0.500” 5005L 9 - 11 ±3
  5007R 16 - 18 ±3
  5007H 23 - 25 ±4

Oval Graphic Domes

Dome
Diameter
Dome
Number
Nominal
Force
(Ounces)
Force
Range
(Ounces)
0.300” x 0.600” 30605 9 - 10 ±3
  30607 13 - 15 ±3
0.350” x 0.700” 35705 9 - 10 ±3
  35707 16 - 17 ±3
0.400” x 0.600” 40605 9 - 10 ±3
  40607 14 - 16 ±3
layer construction

Notes:

  • 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.
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