Use and development trend of PCB surface treatment
The choice of surface treatment process mainly depends on the type of final assembly components; The surface treatment process will affect PCB production, assembly and final use.
Контрактное производство электроники под ключ в Китае
Шэньчжэнь, район Баоань, улица Фуюн, улица Фуцяо, район 3, промышленный парк Лонгхуй 6
PCB surface treatment process characteristics
The purpose of the surface treatment is to ensure good solderability or electrical properties. Since copper tends to exist in the air as an oxide and is unlikely to remain as raw copper for long periods of time, other treatments of copper are required.
Power PCB design skills
When PCB size is too large, the printed line is long, the impedance increases, the anti-noise ability decreases, and the cost increases. Too small, the heat dissipation is not good, and the adjacent lines are susceptible to interference.
Gold, silver, copper in PCB board
PCB as the support body of electronic components, its surface needs to be welded components, it requires a part of the copper layer exposed for welding. Hence the need to brush solder resistance paint.
Three reasons tell you why PCB board copper dumping situation
When the copper wire on PCB board is soaked in etching liquid for a long time, it will cause some fine line backing zinc layer to be completely reacted off and separated from the substrate, that is, the copper wire falls off.
What is the use of gold, silver and other precious metals on PCB
Whether gold or silver, the purpose of the process itself is to prevent oxidation, protect the pad, so that it in the subsequent welding process to ensure yield.
Basic inspection of PCB board
The quality of PCB directly affects the quality of the whole electronic products, PCB testing is a timely detection of problems, but also a necessary means to prevent more defective products to reduce losses.
PCB auto routing
In order to obtain the best performance of electronic circuits, the layout of components and wires are very important, and wiring as the top priority of PCB design process, which will directly affect the performance of PCB board.
The advantages and disadvantages of common PCB surface treatment technology
The OSP acts as a barrier between the copper and the air. Simply put, it chemically grows an organic film on a clean, bare copper surface. The only function of this organic film is to ensure that the inner copper foil does not oxidize before welding.
Visit PCB manufacturers need to pay attention to what problems
Field observation is a practical investigation method, which is of great reference significance for the internal self-understanding and improvement of PCB manufacturers, as well as the understanding and selection of suppliers.
Discussion on metal substrate of PCB circuit board
There are three main types of metal substrate: aluminum substrate, copper substrate, iron substrate. Iron substrate is rarely used in the market, here the focus of analysis is aluminum substrate, copper substrate.
PCB routing guide
In PCB design, wiring is an important step to complete the product design, it can be said that the previous preparatory work is done for it, in the whole PCB, the wiring design process to limit the highest, the most fine skills, the largest workload.
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