Diaphragm switch assemblies are some of the most popular components in modern product design, providing a sophisticated and visually appealing user interface that is both intuitive and functionally robust. However, some products are intended for use in harsh or less-than-ideal environments than typical electronic applications, which leads to further design considerations. Let me take a look at membrane switch technology to consider harsh applications.

Some membrane switching technologies offer limited protection

Membrane switches consist of a series of layers, each with a different purpose. The graphic layer is typically the top layer of a membrane switch assembly, and while it provides some protection to the underlying layer, it can still be problematic under certain conditions. Similarly, a pressure-sensitive adhesive attached to the underlying graphic layer, depending on the specific adhesive used, can provide limited sealing properties to the layer below, but does not provide adequate protection for really harsh operating environments.