An Introduction to PCB Membrane Switches
Membrane switches are used in a variety of electronic devices. Characterized by the use of a flexible substrate, they offer a low-profile design that's highly versatile as well as durable. There are different types of membrane switches, however, one of which is being printed circuit board (PCB). For a better understanding of PCB membrane switches and how they work, keep reading.
What Is a PCB Membrane Switch?
A PCB membrane switch is a special type of membrane switch that features a printed circuit board. Like all membrane switches, they are made of a flexible substrate. They typically contain two conductive contacts, both of which are separated by a spacer layer consisting of air. A flexible material is then used to connect to these conductive contacts.
PCB membrane switches are distinguished from other types of membrane switches by their use of a printed circuit board. Most PCB membrane switches feature a printed circuit board made of copper-clad cloth or resin-infused fiber
PCB Membrane Switches vs Flex Membrane Switches: What's the Difference?
The terms "PCB membrane switch" and "flex membrane switch" are often used interchangeably when referring to electrical switches designed with a printed circuit board. While they both use printed circuit boards, though, they are two unique switching solutions.
A flex membrane switch is essentially a variant of a PCB membrane switch. It uses dielectric material rather than copper-clad cloth or resin-infused fiber. What does this mean exactly? With dielectric material, flex membrane switches are easier to manufacture. Therefore, they cost less than their PCB membrane switch counterparts.
