Poly dome membrane switch

Source: FLEXKYS Editorial Office Release time：2022-02-08 20:14 Click：

►Poly dome membrane switch

Construction of poly dome membrane switch and its circuits design

Working principle of Poly Dome Membrane Switch

When you press the poly dome key, the silver print under the dome connects with circuit on opposite layer, thereby closing the circuit. The click hand feeling indicates the correct operation. The function of poly dome is similar as metal dome.

The production of poly dome

Put the PET panel with printed silver points in heated mold. Then,press the mold to form half round shape.

(Below pictures show how the mold work.)

Advantages of poly dome membrane switch

1）Long working life

2）Recover easily after bending and do not effect the function

3）Lower material cost than metal dome

4）Suitable for products requiring small buttons and lighter pressure

Electrical performance

Item	Date	Item	Date
Wire Resistance	0.5mm width,<1Ω/cm	Rated Current	25-200mA,0-30V DC
Insulation Resistance	>100MΩ 250V DC	Working Voltage	<50V DC
Working Life	>1 million times	Working Temperature	-20℃-35℃
Working Humidity	40℃,98%RH No Influence	Feedback Time	10ms