Flexible printed circuits or flex-pcb



This article is dedicated to flexible printed circuits or flex-pcb, it is to be mentioned that PcbWay is at the forefront of using this type of technology.

If you have an electronic circuit and want to assemble using this technology, I invite you to quote that project you have in mind and put it into practice.

This is a technology used for mounting electronic circuits by mounting electronic devices on flexible plastic substrates, such as polyimide, in a transparent polyester conductive film (PEEK). It is worth mentioning that the flexible circuits can be silkscreened silver circuits in polyester (Poliesxter is a plastic resin obtained through a chemical reaction, it is very resistant to humidity and chemical products).

One of the advantages of this technology is that it reduces the weight and size of printed circuits.
One of the disadvantages of this technique is the higher cost than that of rigid printed circuit boards.



Flexible Printed Circuits (CIF) are manufactured using photolithography technology. Alternatively, flexible foil circuits or flexible flat cables (FFC) can be manufactured. This consists of laminating very thin 0.07 mm copper strips, making a sandwich with two layers of PET. The PET layers are regularly 0.05 mm thick, which are covered with an adhesive that is thermoset and that is activated during the lamination process.

Definition of Thermoset Adhesive : Group of materials that are formed by polymers that are joined by chemical bonds, this allows them to acquire a strongly crosslinked structure.



You probably think that this type of flexible printed circuits can take conventional boards off the market, but no, conventional ones will continue to be manufactured as they have been for decades. When I started studying electronics, the assembly of electronic circuits made them into terminal strips, there were 4, 6, 12 terminals, although there were already rigid plates made of glass fiber, phenolite, among other non-metallic materials. conductors.