Circuit board processing-double-sided circuit board processing-Jinan circuit board processing

Printed circuit boards (b, B) appear in almost every electronic device. If there are electronic parts in a certain device, they are also mounted on B's of different sizes. In addition to fixing various small parts, the main function of B is to provide mutual electrical connections between the various parts above. As electronic equipment becomes more and more complex and requires more and more parts, the circuits and parts on B are becoming more and more dense. The standard B looks like this. The bare board (without components on it) is also often called "Printed Circuit Board B (B)".
The substrate of the board itself is made of a material that is insulating and not easy to bend. The small circuit material that can be seen on the surface is copper foil. Originally, the copper foil covered the entire board, but during the manufacturing process, part of it was etched away, and the remaining part became a mesh of small circuits. . These lines are called wires or wiring and are used to provide electrical connections to the parts on B.
To secure the parts to B, we solder their pins directly to the wiring. On the most basic B (single panel), the components are concentrated on one side and the wires are concentrated on the other side. In this case, we need to make holes in the board so that the pins can pass through the board to the other side, so the pins of the part are soldered to the other side. Because of this, the front and back sides of B are called the part surface ( ) and the welding surface ( ) respectively.
If there are some parts on B that need to be removed or put back after the production is completed, then the socket () will be used when installing the parts. Since the socket is directly welded to the board, the parts can be disassembled and assembled at will. Seen below is a (r, zero-dial force) socket, which allows parts (in this case) to be easily inserted into the socket and removed. A retaining rod next to the socket that holds the part in place after you insert it.
If we want to connect two B pieces to each other, we usually use edge joints ( ) commonly known as "gold fingers". The gold finger contains many exposed copper pads, which are actually part of the B wiring. Usually when connecting, we insert the gold finger on one B into the appropriate slot on the other B (usually called an expansion slot). In computers, graphics cards, sound cards or other similar interface cards are connected to the motherboard through golden fingers. The green or brown on
is the color of the solder resist (). This layer is an insulating protective layer that protects the copper wires and prevents parts from being soldered to incorrect places. An additional layer of screen printing surface ( ) will be printed on the solder mask layer. Usually words and symbols (mostly white) are printed on it to mark the position of each part on the board. The screen printing side is also called the icon side ( ).
Zhongtian Yuan Circuit Board Co., Ltd. is a high-tech enterprise in Zhengzhou specializing in the R&D, production and processing of B circuit boards, multi-layer printed boards, and aluminum substrates
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