What is the thick copper circuit board? What is the role of thick copper circuit board?
There are many electronic engineers who cannot understand what the copper substrate is used for. The quality and reliability of the high thermal conductivity copper substrate is much better than that of the aluminum substrate and the iron substrate. The copper substrate is one of the most expensive metal substrates. The heat dissipation effect is many times better than that of the aluminum substrate and the iron substrate. It is suitable for high-frequency circuits, areas with large changes in high and low temperatures, and the heat dissipation and architectural decoration industries of communication equipment.
Printed Circuit Board (PCB) is usually bonded with a layer of copper foil on a glass epoxy board. The thickness of the copper foil is usually 18 μm, 35 μm, 55 μm and 70 μm. The usual thickness of the copper foil is 35 μm. The thickness of copper foil used in China is generally 35 ~ 50μm, and there are thinner than this, such as 10μm and 18μm; and thicker than this, such as 70μm. Thick copper circuit board is in the FR4 outer layer of bonding a layer of copper foil, when the completion of copper thick 2oz, defined as thick copper circuit board. PCB thick copper plate high temperature resistance, corrosion resistance, mainly used in products with power savings, especially the need to run a higher voltage and current of electronic products is the need for thick copper circuit board. The thicker the copper hole is, the better. All the data need to be made according to the customer's requirements. Thick copper circuit board has very good extension performance, not limited by the processing temperature, high melting point can be used oxygen blowing, low temperature is not brittle and other hot melt welding methods, and also fire, is a non-combustible material, its thickness is different, the specific application occasions are also very different.
thick copper circuit board because of the use and the thickness of the signal current. The finished circuit board with a copper thickness greater than or equal to 2OZ is called a thick copper plate, and the finished product with a copper thickness of 2OZ is thick. Hand screen printing once is not enough to fill the gap between the lines, need to print twice solder mask. When the material is 2OZ or thicker, the thick copper plate of the PCB will be noticed during solder resist, and secondary screen printing is required. In order to achieve the effect that the line does not become red and the thickness of the solder resist layer on the surface of the line is greater than 10um. Copper plating generally has one copper and two copper. The main purpose of primary copper is to provide sufficient copper thickness for the second copper etching to ensure that the copper thickness after the second copper etching can meet the customer's copper thickness standard requirements.
What is the role of thick copper circuit boards? With the continuous development of science and technology, people need high-performance, small-volume, multi-functional electronic products. In order to carry large current, reduce thermal strain, good heat dissipation, more and more electronic products. Industries that benefit from PCB thick copper plates include manufacturers of power supplies, automobiles, solar panels, and welding equipment. Thick copper wiring boards with copper plated vias are suitable for transferring heat to an external heat sink. Thick copper wiring boards are made by electroplating and etching techniques to increase the copper thickness of the through-hole and plated hole sidewalls.
thick copper circuit board
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