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Printed circuit board systemThe conductive pattern refers to the conductive pattern made of printed circuit, printed component or combination of the two on the insulating substrate according to the predetermined design, and the conductive pattern that provides the electrical connection between components on the insulating substrate is called the printed circuit, excluding the printed component. The printed circuit or the finished printed circuit board is called the printed circuit board or the printed circuit board, also called the printed circuit board. What are the basic functions of the production of the printed circuit board? Let's take a look.

The substrate made of printed circuit board is generally made of insulating, heat-insulating and non-flexible materials. The fine circuit material that can be seen on the surface is copper foil, which was originally covered on the whole board, but part of the copper foil was etched off during the manufacturing process, leaving the copper foil to become a grid of fine circuits. These lines are called wires, which are used to provide circuit connections for components on the printed circuit board.

In order to fix the components on the printed circuit board, the pins can be directly welded on the pad. Pads are used to fix component pins or lead out wires, test wires, etc. Pads have various shapes such as round and rectangular. In the most basic printed circuit board (single panel), the components are concentrated on one side, and the wires are concentrated on the other side. In this way, it is necessary to drill holes in the board so that the pins can pass through the board to the other side, so the pins of components are welded on the other side. Therefore, the front and back sides of the printed circuit board are called component surface and welding surface respectively.

What are the basic functions of printed circuit board manufacturing?

If you want to connect two printed circuit boards with each other, you will usually use the side connector of the gold finger. Connect the connector shrapnel to conduct compression contact and conductive interconnection. Generally, when connecting, insert the gold finger on one piece of printed circuit into the appropriate slot on the other piece of printed circuit (generally called expansion slot Slot). Because of the good conductivity of gold, it will not be directly oxidized and rusted at low temperature and high temperature, and the electroplating process is also very easy, and the appearance is also beautiful, so almost all contact surfaces in the electronic industry should choose electroplated gold. In the computer, the graphics display card, sound card, network card or other similar interface cards are connected to the motherboard with the help of a gold finger.

The role of printed circuit boards in electronic equipment includes: providing mechanical support for fixing and assembling components such as transistors, integrated circuits, resistors, capacitors and inductors; Realize the wiring, electrical connection and electrical insulation between transistors, integrated circuits, resistors, capacitors, inductors and other components to meet their electrical characteristics; It provides identification characters and graphics for the inspection and maintenance of components in the electronic assembly process, and provides solder mask graphics for wave soldering.