A pass hole is a pad with an electroplating hole that connects copper wires on one PCB layer to another. High density multilayer circuit boards may use blind or buried holes, also known as micro through holes.
PCB (English Printed Circuie Board printed circuit board is short for) with nickel plating as the substrate coating of precious metals and base metals, for some single-sided printed boards, also commonly used as the surface layer.
When a certain amount of reaction product copper powder is generated, the reaction is catalyzed and sensitive, which will soon make the chemical copper completely ineffective. In order to control the rehabilitation response of the solution itself, pcb man
The less interlayer alternations between pins of high-speed circuit devices, the better. The so-called "the less interlayer alternations of leads, the better" means that the fewer holes used in the connection of components, the better.
Impedance circuit board Analysis of PCB circuit board impedance reasonspcb circuit board impedance refers to the resistance and reactance of the parameter, the alternating current plays an obstruction role. Impedance processing is essential in pcb circuit
The number of holes should be reduced as far as possible. It should be known that a hole in the circuit board will bring about 10pF capacitance effect, which is a great interference in high-frequency circuits.
Radio frequency and microwave signals are very sensitive to noise-much more so than ultra-fast digital signals. This means that you need to work hard to keep noise, ringing, and reflection to a minimum, while carefully handling the overall system
Before understanding the PCB design copper platinum thickness, line width and current relationship, let's understand the conversion between the PCB copper thickness in ounces, inches and millimeters: "In many data tables, PCB copper thickness is ofte...
Verification of machine Settings (components, machine parameters, etc.) is a positive approach. AOI can be used effectively for the inspection of the first board. Some hardware and software vendors also provide feeder Settings confirmation software.
SMT in the production process of PCB design requirements,In SMT patch processing technology, there are certain requirements for PCB design. Here, Pate Technology gives you an example.
mechanical -- the mechanical layer is what defines the appearance of the whole PCB board, actually when we say the mechanical layer we mean the structure of the whole PCB board.
With the continuous development of science and technology, especially information technology, the process technology of printed board production is improved accordingly to meet the needs of different users. In recent years, the development of communicatio
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