Mylar sheet (film button switch), also known as film conductive film, is a layer of conductive paste printed on the film sheet (PET). After hot pressing the contacts, a button with good tactile feel is formed. The pull tab is firmly bonded to the silicone button and is used as a switch.
Working principle: The Mylar piece is located above the conductive part of the PCB. When the button is pressed, the center of the contact is recessed, and the conductive paste printed on the contact contacts the line on the PCB, thus forming a loop, and the whole product can be obtained. normal work.
Poly dome is more stable than conductive silicone, has a longer service life and better touch. The elastic value and the stroke value can be adjusted according to the actual needs of the customer. The adjustable range is larger than that of the Metal dome product, and the assembly of the product is also convenient.
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