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FPC soft board is mainly made of polyimide or polyester film as the basic material, and other components include insulating film, conductor and adhesive. Pre-treatment is required before FPC production, and final inspection is required during the production process. FPC flexible circuit test, shrapnel micro-needle module is thin, flat, tough and powerful. It can pass 1-50A current in high current test, with stable overcurrent, constant resistance, and good connection function.
What is the general thickness of the FPC soft board
What is the thickness of the FPC soft board substrate?
FPC substrates are divided into types, mainly rolled copper and electrolytic copper. Rolled copper has good flexibility and bending resistance, but the overcurrent is smaller than that of electrolytic copper; electrolytic copper has a harder texture and is less flexible than rolled copper, but it can pass The current is relatively large, and it is generally used for power supply. is divided into single-sided substrate and double-sided substrate from the number of layers. The single-sided substrate is composed of polyimide resin and PI, which are laminated with copper foil on one side. If the laminated surface contains glue, it is called glue-free calendering or glue-free electrolysis. If there is no glue, it is called glue-free calendering or glue-free electrolysis. The main difference between glue and no glue is the different adsorption capacity of copper foil and insulating PI and the different breakdown coefficient.
As for the thickness, copper foil has 1oz (35um), 0.5oz (18um), 1./3oz (12.5um), and the insulation PI thickness is generally 12.5um, 25um. The thickness of the substrate mainly has three different thicknesses: 35/25, 18/12.5, and 12.5/12.5.
