What are the characteristics of thick copper circuit boards?
thick copper wiring board is formed by laminating and bonding several etched single-sided or double-sided boards. Compared with single-layer and double-layer circuit boards, what are the characteristics of thick copper circuit boards?
1. Thick copper circuit boards have high assembly density and small size. The thick copper circuit board is convenient for wiring, shortens the wiring length and the wiring between components, and helps to improve the signal transmission speed.
3. For high-frequency circuits, after adding a ground layer, the signal line and the ground layer form a constant low impedance, the circuit impedance is greatly reduced, and the shielding effect is good. For electronic products with high heat dissipation requirements, thick copper circuit boards can be equipped with a metal core heat dissipation layer to meet the needs of special functions such as shielding and heat dissipation.
5. In terms of performance, thick copper circuit boards are better than single-sided and double-sided circuit boards, but the higher the number of layers, the higher the manufacturing cost, the longer the processing time, and the more complicated the quality inspection.
6. Four-or six-layer boards are common in thick copper circuit boards. The difference between the four-layer board and the six-layer board is that there are two internal signal layers between the middle layer, the ground layer and the power layer. The six-layer board is thicker than the four-layer board.
Generally speaking, thick copper circuit boards have been widely used in the production of electronic products due to their flexible design, superior economy, and stable and reliable electrical performance.
Circuit board manufacturers have completed many parts in the process of producing PCB circuit boards. Production details are very important. Any problem in any link will result in an open circuit and an electrical break. This makes it necessary to consider how to prevent and reduce the open circuit and short circuit in the circuit board production process.
In the copper plating process, the pad printing exposure process and the development of the circuit board, these are important control links. In the front, scratches and scratches of the circuit board are eliminated. During the production process, attention should be paid to inspection, handling with care, and there is no quality problem.
After this process, plus electrical testing, the delivery rate is basically 100%. Of course, there will be individual defects in the process of transportation and welding to the customer's hands, but this situation can be linked together. We also prepare a certain number of spare parts for our customers.
In this way, a good production process can be completed in one go, without rework, defects and scrap. The power is greatly improved and the production cost is reduced.
How to ensure that the circuit board is not open or short-circuited? The method of judging whether the circuit board is open or short-circuited is introduced. I hope it can help you.
thick copper circuit board
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