China Wholesale Elevator Circuit Boards Quotes - 8 Layer impedance ENIG PCB 6351 – Huihe
China Wholesale Elevator Circuit Boards Quotes - 8 Layer impedance ENIG PCB 6351 – Huihe Detail:
Half hole technology
After the PCB is made in the half hole, the tin layer is set at the edge of the hole by electroplating. The tin layer is used as the protective layer to enhance the tear resistance and completely prevent the copper layer falling off from the hole wall. Therefore, the impurity generation in the production process of the printed circuit board is reduced, and the workload of cleaning is also reduced, so as to improve the quality of the finished PCB.
After the production of conventional half-hole PCB is completed, there will be copper chips on both sides of the half-hole, and the copper chips will be involved in the inner side of the half-hole. Half hole is used as a child PCB, the role of the half hole is in the process of PCBA, will take half a child of the PCB, by giving half a hole filling of tin to make half the master plate welded on the main board, and half a hole with copper scrap, will directly affect tin, affecting the welding firmly of the sheet on the motherboard, and affect the appearance and the use of the whole machine performance.
The surface of the half hole is provided with a metal layer, and the intersection of the half hole and the edge of the body is respectively provided with a gap, and the surface of the gap is a plane or the surface of the gap is a combination of the plane and the surface of the surface. By increasing the gap at both ends of the half hole, the copper chips at the intersection of the half hole and the body edge are removed to form a smooth PCB, effectively avoiding the copper chips remaining in the half hole, ensuring the quality of the PCB , as well as the reliable welding and appearance quality of the PCB in the process of PCBA, and ensuring the performance of the whole machine after subsequent assembly.
Application
Industrial control
Consumer electronics
Communication
Equipment display
Automatic Plating Line
PTH line
LDI
CCD Exposure Machine
Our factory
Product detail pictures:
Related Product Guide:
Using a complete scientific top quality management program, great high-quality and fantastic religion, we win great track record and occupied this area for China Wholesale Elevator Circuit Boards Quotes - 8 Layer impedance ENIG PCB 6351 – Huihe , The product will supply to all over the world, such as: Paraguay, Sheffield, Croatia, To win customers' confidence, Best Source has set up a strong sales and after-sales team to provide the best product and service. Best Source abides by the idea of "Grow with customer" and philosophy of "Customer-oriented" to achieve cooperation of mutual trust and benefit. Best Source will always stand ready to cooperate with you. Let's grow together!
By Lulu from Ukraine - 2017.05.31 13:26
In our cooperated wholesalers, this company has the best quality and reasonable price, they are our first choice.
By Ricardo from Moldova - 2018.02.12 14:52