Silicone switch button membrane keypad for pcb

A membrane keypad for pcb integration should be developed with the circuit board's installed position and support. The silicone switch button geometry needs to meet the intended actuator or contact area through its designed travel. Board movement under a press can change the response even when the rubber profile is correct.

Custom dimensions, colors and markings allow the keypad to follow the product. Define the distance between the housing, keypad and PCB, including normal assembly variation. The sheet's locating features should keep key centers aligned without requiring stretch during fitting.

Check the complete stack after fastening and include presses near the edges of each key. Inspect whether the board or surrounding support moves and whether the button returns freely. During assembly, keep the underside free of debris and avoid trapping the membrane beneath an unintended feature. If response differs across the layout, review PCB support and spacing as well as the molded component. Any environmental protection requirement should be assessed on the complete enclosure and keypad arrangement.

Material options

Silicone. Custom formulation and color for the intended contact conditions.

Hardness selection

Silicone: 20–80 Shore A. Board movement under a press can change the response even when the rubber profile is correct.

Custom dimensions

The sheet's locating features should keep key centers aligned without requiring stretch during fitting.

Fit & assembly

A membrane keypad for pcb integration should be developed with the circuit board's installed position and support.

Use & inspection

During assembly, keep the underside free of debris and avoid trapping the membrane beneath an unintended feature.

Photos illustrate structure or material only. The silicone switch button geometry needs to meet the intended actuator or contact area through its designed travel. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.