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PCB is a piece of insulation that is threaded with conductive wires and similar components. Design of PCB originated in the 1980s. PCB structure include three parts, they consist of an insulator, usually fiberglass, with threads of conductive material acting as wires on the base of the board.

Invention and History


Although previous inventors had developed similar boards in the first decade of the 20th Century, Austrian engineer Paul Eisler created the first printed circuit boards in the mid-1930s. During World War II, the US produced them on a massive scale for use in war radios. This hardware remained primarily confined to the military sector during this period, but following the end of the war it became available for widespread commercial use.

Components and Design


Since the 1980s most circuit boards use surface-mounted components, which are designed with small tabs, and easily soldered into place on the board. Modern circuit board producers often perform this process by placing the cool solder mixture, and baking the entire board to melt the solder and set the components in place.
Prior to the creation of surface-mount technology in the mid-1960s, manufacturers used wire to attach components to each circuit board. With the need for wire eliminated, boards have become lighter and more efficient to produce.

prototype PCB

Special Features


A number of additional technologies may be applied to circuit boards for specialized uses. Flex circuit boards, for example, are designed to be quite flexible, allowing placement of the circuit board in positions which would otherwise be impractical. Some companies design boards for use in satellites and spacecraft, making them with rigid copper cores that conduct heat away from sensitive components to protect them in extreme temperatures. Other manufacturers make circuit boards with an interior conductive layer to carry power to various components without extra traces or wires.

Future trends


PCB design and manufacturing are mature industries now. Not only wearable applications, advanced smart handheld devices drive high-precision multilayer integrated circuits or integrated packaging solutions anticipated, the relevant miniaturized ICT equipment driven flex circuit boards increasingly buoyant demand, while derivatives such as medical electronics, innovative applications market applications although the amount is not large, but the future direction of the PCB industry can continue to concern.

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