PCB circuit board? What is it?
Usually the colors of the PCB are green or brown, which is the color of the solder mask. Is an insulated protective layer that protects the copper wire and prevents parts from being welded to the wrong place. In the solder mask layer will be printed on a layer of screen printing surface (silk screen). Usually on this will be printed on the text and symbols (mostly white), to mark the parts on the board position. Screen printing is also called the icon (legend).
the original copper foil is covered in the entire board, and in the manufacturing process part of the etching process, the remaining part of the network into a small line The These lines are called conductor patterns or wiring and are used to provide circuit connections for parts on the PCB.
As electronic devices become more complex, more and more parts are needed, and the lines and parts on the PCB are becoming more and more dense. Bare boards (no parts on top) are also often referred to as "Printed Wiring Board (PWB)". The board itself is made of insulated and non-bendable material. On the surface you can see the small line material is copper foil,
Because it is made using electronic printing, it is called "printed" circuit board. PCB is divided into single-sided circuit boards, double-sided circuit boards, multi-layer circuit boards, flexible circuit boards, aluminum-based circuit boards, with the rapid development of science and technology, more and more demanding, but now or single- the Lord.
