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What is Shen Jin? Under what circumstances is it necessary to deposit gold?
2019-01-21
The purpose of gold deposition process is to deposit nickel gold coating with stable color, good brightness, flat coating and good weldability on the surface of printed circuit. Basically, it can be divided into four stages: pretreatment (degreasing, micro-etching, activation and post-leaching), nickel precipitation, gold precipitation, and post-treatment (waste gold washing, DI washing, and drying). When you need to make a key board or connect a socket, you may need to sink gold. The gold plate is not easy to rust and has low contact resistance.
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What does V carving mean?
2019-01-21
That is, for the boards that are put together, the edge line is not completely cut, only a part is cut on the front and back sides, and you can break it by hand. The shape of the groove is like V, so it is called V carving.
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Under what circumstances should green oil cover the vias?
2019-01-21
One is beautiful, and the other is to prevent short circuits caused by easy contact with vias during welding. If it is not selected, tin spray will probably fill the vias, and the advantage is that the vias resistance becomes smaller and is not easy to break.
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Can we do the line that is smaller than the factory standard?
2019-01-21
It can also be done, but in order to ensure the yield rate, we put forward a slightly higher requirement. If your board circuit is very precise and smaller than the factory's requirements, you can also consult our customer service personnel for a quotation.
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What kind of board is the puzzle?
2019-01-21
A PCB board contains several boards with different application circuits, which are called panels. Complete cutting, V carving, grooving, stamp hole and other methods can be selected for plate splicing.
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What kind of business services can your company provide?
2019-01-16
Precision drilling circuit board is a manufacturer specializing in the production of high-precision double-layer and multi-layer boards. With accurate market positioning, customer-centric service philosophy and excellent corporate culture, the company has mature circuit board production and manufacturing technology, master the industry's advanced product production technology and production process control technology, as well as a highly professional product production technology development team, which can meet the various needs of customers in a one-stop manner.. "At the same cost, our delivery speed is faster, and at the same delivery speed, our cost is lower. We can provide customers with technical services from research and development to the production process.".
