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Membrane Keyboard Switch
4 Wire Resistive Touch Screen
Product Description

      Membrane Keyboard Switch is a conductive keypad panel with unique cosmetic design. We offer full range designs of Membrane Keyboard Switches:

Flat and all embossed key type with either metal dome or mylar dome
SMT components, LED back light effect, EL back light
membrane keypad with FPC circuit
textured surface(or matte surface treatment) with choices of transparent or color printing display window
membrane keypad with EMI, RFI, or ESD shielding
membrane keypad with silicon rubber
Waterproof type
membrane keypad with key epoxy-coating
membrane keypad with PCB circuit
MKS Product Warranty Manual
Membrane Keyboard Switch Warranty Manual
MKS Production Flow Chart
Membrane Keyboard Switch Production Flow Chart
Easy installation.
Low cost.
Excellent sealing.
Can be custom-made to your need.
Main Application

Information application  products, remote control, telecommunication equipment, OA equipment, household appliance, medical instruments, measuring instruments, toys...etc.


Polyester is used for both circuit layers and overlay layers. High temp and corrosion resistant, the flexibility and mechanism are good as well as  high reliability. It is mostly suitable used in  products where the application environment are atrocious or products are emboss required.

Polycarbonate is usually used  for overlays. It has more competitive price than PET so mostly used in products  that styles improved frequently, such as  microwave oven and toys , etc.
Standard Specification
Maximum Circuit Rating
35V( DC),100mA 1W
Contact Resistance
10Ω ~ 500Ω (depending on trace length & material used).
Insulation Resistance
≥100M Ω at 100V
Dielectric Withstand
250 V Rms (50~60 Hz 1 min.)
Contact Bounce
Life Expectancy
Flat type ≥5 million

Tactile type ≥1 million

Actuation Force
Flat type = 57 to 284 g (2 to 10 oz)

Tactile type = 170 to 397 g (6 to 14 oz)

Switch Stroke
Flat type = 0.1 to 0.5mm

Tactile type = 0.6 to 1.5mm

Operation Temperature
Flat/Metal dome: -20 ℃ to +80 ℃

Poly dome: -20 ℃ to +55 ℃

Storage Temperature
Flat/Metal dome: -40 ℃ to +80 ℃

Poly dome: -40 ℃ to +60 ℃

40 ℃ , 90%  for 240 hours
20 G's0 max
(10-200 Hz、MIL-STD-202、M204、Condition B)
5 Wire Resistive Touch Screen
8 Wire Resistive Touch Screen

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