If the customer's product requires 0.5mm spacing, and the resistance value is required, the FPC membrane switch can well meet the customer's requirements. the FPC can achieve the track width/spacing of 0.1/0.1mm, and the resistance value is small, also can do 0.5mm pitch cable, this can be suitable for some relatively small products. FPC can also install metal-domes, so FPC membrane switch combines the advantages of flexible circuit boards and metal domes, whcih can well reduce the volume and weight of electronic products, and it is better suitable for modern precision electronic products with high density, miniaturization and high reliability. 

The circuit layer of the conventional membrane switch uses the screen printing process to print the silver paste tracks onto the PET substrate to form a circuit layer and assemble it into the membrane switch. Routinely printed silver paste tracks require width/spacing at least more than 0.5/0.5mm, which is more suitable for 1.0mm, 1.27mm and 2.54mm pitch cable. The resistance of silver paste is higher than that of etched copper tracks.