Many of us have heard of circuits in our lives. We know that they are the complicated electrical wires that connect the various switches and triggers so that an electronic device will start working and functioning. But with the advancement of technology many things have changes. People are trying to simplify things as much as possible and make their work easier for themselves as well for other people. And the printed circuit board is one such technological advancement.
So a printed circuit board is basically a board supports and connects both mechanically and electronically the various electronic components by the use of conductive pads, tracks and other tools which are made form etched copper sheets. A pcb assembly is complicated because it involves handling a lot of mechanisms such as resistors and capacitors. You can have one sided single printed circuit boards or you can have double sided printed circuit boards. And nowadays you even get multi-layer printed circuit boards.
And these boards are the conducting systems used in almost all types of electronic manufacturing services http://www.whitways.com/factory.html of today. Be it kitchen equipment or factory operated machine or electronic devices of the modern era. They all have a printed circuit board inside them. Many printed circuit boards can be combine to together in a process called panelizing. Which brings these many printed circuit boards together on a larger board. There are two type pf panels that can be used. An assembly panel which is also called an array panel and the bare board manufacturing panels. The number of panels that need to be created depend on what needs to be delivered and the demand. And this process of breaking down these panels is called depanelization. Today depaneling is often done by lasers which cut the board with no contact. Laser panelization reduces stress on the fragile circuits.
The holes that we see on a printed circuit board are often drilled into it using small-diameter drill bits made of solid coated tungsten carbide. Which is the standard methods of drilling holes into any type of printed circuit board. These holes can be made to be conductive by electroplating or inserting metal eyelets. These are generally used to connect the various board layers found in multi layered printed circuit boards. After completion these printed circuit boards are then plated with solder, tin or gold. This is done to prevent etching away of the copper that is lying underneath. When the printed circuit boards are intended for working in extreme environments then they are often given a conformal coating after they have been soldered. This coat is applied by dipping the board or spraying it. This coat helps to prevent corrosion and leakage of currents.