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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 […]

At present, domestic PCB manufacturers that can mass produce high-level circuit boards mainly come from foreign-funded enterprises or a few domestic-funded enterprises. The production of high-level circuit boards not only requires high investment in technology and equipment, but also requires the experience accumulation of technicians and production personnel. At the same time, the customer certification […]

Multi-layer PCB is used as the “core force” in the fields of communication, medical treatment, industrial control, security, automobile, electric power, aviation, military industry, computer periphery, etc. With more and more product functions and denser lines, it is relatively difficult to produce. At present, domestic PCB manufacturers that can mass-produce multilayer circuit boards often come […]

Copper sulfate electroplating plays an extremely important role in PCB electroplating. The quality of acid copper electroplating directly affects the quality and related mechanical properties of the electroplated copper layer on PCB board, and has a certain impact on the subsequent processing. Therefore, how to control the quality of acid copper electroplating is an important […]

With the improvement of the integration of IC devices, the miniaturization of devices and the increasing speed of devices, the EMI problem in electronic products is becoming more and more serious. From the point of view of EMC/EMI design of system equipment, dealing with EMC/EMI problems in PCB design stage of equipment is the most […]