Category Archives: Uncategorized

Impedance control is essential for high-speed circuit design to achieve the best transmission efficiency. Impedance calculation is related to factors such as plane, line width, dielectric thickness, dielectric constant, etc. In the calculation process, the values of each factor should be adjusted according to impedance requirements to find the best solution. This paper introduces the […]

Circuit board is in English, literally translated as “printed circuit board”, as well as circuit board, PCB, PCB, etc., which is an important part of electronic equipment in the modern technology era. The appearance of circuit board provides various functions for electronic products and realizes the integration of circuits. It mainly consists of pads, holes, […]

As HDI board adapts to the development of high integration IC and high density interconnection assembly technology, it pushes PCB manufacturing technology to a new level and becomes one of the biggest hot spots in PCB manufacturing technology!In all kinds of PCB cam production, the personnel engaged in cam production agree that HDI mobile phone […]

1, PCB painting outsourcing production requirements Clear requirements for plate thickness, copper thickness, welding resistance, character color, etc. The above requirements are the basis for making a board, so R&D engineers must write clearly. As far as the customers I have contacted are concerned, Gree has done a relatively good job, and the technical requirements […]

Ultra-thick copper multilayer PCB originated from North America, such as UPE Company in Canada. In the 1990s, the company began to develop and produce ultra-thick copper multilayer PCB, and achieved good results. This kind of special board product is applied to the components connected with strong current and mixed connection of strong and weak current. […]

EMI is caused by electromagnetic interference source transferring energy to sensitive system through coupling path. It includes three basic forms: conduction through wires or common ground wires, space radiation or near-field coupling. The harm of EMI is to reduce the quality of transmission signal, cause interference or even damage to the circuit or equipment, and […]

Different types of PCB have different manufacturing methods, and the same type of PCB also has different processing methods. Although there are many manufacturing processes, they can be classified into the following three basic methods: Additive process: Through screen printing or exposure to form patterns, drilling, copper deposition, transfer lamination and other processing, the conductive […]

From the continuous update and development of computers, mobile phones and other electrical products, we can see the development of PCB manufacturing industry. HDI board making is the inevitable product of PCB development and a trend of PCB making. It is different from traditional PCB and has the following obvious characteristics: 1. Laser drilling is […]

A good circuit board should not only realize the function of circuit principle, but also consider the electrical characteristics such as EMI, EMC, ESD (electrostatic discharge), signal integrity, as well as the heat dissipation of mechanical structure and high power consumption chips. On this basis, consider the beauty of the circuit board, just like artistic […]

The success or failure of ink use directly affects the overall technical requirements and quality indicators of PCB shipment. Therefore, PCB manufacturers attach great importance to the performance of ink. Besides the well-known viscosity of ink, the thixotropy of ink is often ignored by people. But it plays an important role in the effect of […]