PCB Blogger-China PCB Factory,HOYOGO

         FPCs are widely used in electronic products, such as smartphones, wearable electronic devices and so on. The selection and design of materials directly affect performance and durability of the products. This article briefly introduces the key points of FPC material selection, including side keys, buttons, connecting lines, sliding covers and multilayer flexible boards, and discusses the selection criteria for auxiliary materials and conductive materials. Let's learn more about it!   1.  Material Selection for Side keys/ Buttons When purchasing side keys and main buttons, double-sided electrolytic copper with 18/12.5 specifications should be chosen (except in special cases). For bending, there are no special requirements for side keys and main buttons. They only needs to be soldered and fixed on the main board, but it must be ensured that there are no abnormalities after being bent back and forth more than 8 times before it can be used. There a...

        FPC is the abbreviation of Flexible Printed Circuit, which is widely popular for its lightness, thinness and flexibility and other characteristi cs.   It uses various materials are used in the production process.   The materials that make up the flexible PCB include insulating base material, adhesiv e, metal conductor layer (copper foil) and covering layer.  The difference in materials also determines the performance of FPC. Next, I will introduce you to these materials.   1. Insulating Base Material Insulating base material is a flexible insulating film. As an insulating carrier for circuit boards, it is required to have good mechanical and electrical properties. Nowadays, polyimide (PI) film and polyester (PET) film are commonly used in FPC. Generally, the film thickness is selected within the range of 0.0127~0.127 (0.5mil~5mil). 2.  A dhesive The adhesive acts as a bond between the film base material and the metal foil, or the...