In order to make the design of high frequency printed circuit board more reasonable and the anti-interference performance better, many high frequency PCB companies should consider the following aspects in the design of high frequency printed circuit board. 1. Using the middle inner plane as power supply and wire layer can shield, reduce parasitic inductance,…
It is well known that the rapid development of high-speed network data products has made a series of peripheral products and corresponding data processing more efficient. In this process, reliable high-frequency printed circuit board manufacturer plays an important role. In order to reach a series of new technical standards and corresponding technological requirements, it is…
When the temperature rises to a certain area, the substrate will change from "glass state" to "rubber state", and the temperature at this time is called the glass transition temperature (TG) of the plate. That is to say, Tg is the highest temperature at which the base material remains rigid. Common PCB substrate materials not…
The increasing specification of electronic products has led to the wide application of large scale integrated circuit (IC) and surface mount technology (SMT) assembly in modern electronic manufacturing services. In addition, the circuit has been developing in the direction of miniaturization, lightweight, multi-function, high performance, high speed and high reliability. The increase of component density…
Metal Core Printed Circuit Boards (MCPCBs) offer several advantages over traditional FR-4 PCBs, which have a fiberglass substrate with a copper layer. The key advantages of MCPCBs include: Thermal Conductivity: The most significant advantage of MCPCBs is their high thermal conductivity. They are designed to dissipate heat efficiently, making them ideal for applications that generate…
Metal Core PCB Surface Mounting Components A key factor in incorporating MCPCB design is the use of surface mounted components instead of any plated through holes. The reason is that the bottom of the layer structure is thick metal sheet, so plated through holes (or non-plated holes with conductive element leads inserted into them) will…
There are four special plating methods in the production of PCB. They are row plating, through-hole plating, coil-driven selective plating and brush plating. 1. Finger row electroplating Rare metals are often plated on edge connectors, edge protruding contacts or golden fingers to provide lower contact resistance and higher wear resistance. This technology is called…
1. Contacts: Connectors are the core parts of the electrical connection function. Generally, the contact pair is composed of positive contacts and negative contacts, and the electrical connection is completed by the insertion of negative and positive contacts. Positive contact parts are rigid parts, and their shapes are cylindrical (circular insert needle), square (square…
High-frequency board refers to: high-frequency printed circuit board refers to the high-frequency device produced in a specific high-frequency substrate copper clad board, referring to the common FR4 rigid PCB manufacturing process. The main factors to be considered in the selection of high frequency sheets include dielectric constant and tolerance (Dk), loss factor (Df), thermal expansion…
Installation Forms of Electronic Components For different types of components, their shape and lead arrangement are different, and their installation forms are also different. Here are some common installation forms. 1. Installation form of veneer type The mounting type is to install the components close to the surface of the printed circuit board, and the…
1. Width selection criteria of printed conductors for custom circuit board China: The minimum width of printed conductors is related to the current flowing through the conductors: the line width is too small, the resistance of the newly printed conductors is too large, and the voltage drop on the line is also large, which affects…
Printed circuit board is an important electronic component, the support of electronic components and the carrier of electrical connection in the electronic components. The role of PCB After the electronic equipment adopts the printed board, the error of manual wiring is avoided due to the consistency of the same kind of printed board, and the…
1. According to the process characteristics, there are two types of gold plating: cyanide-free gold plating and cyanide-plated gold plating. Cyanide solution is divided into high cyanide solution and low cyanide solution. 2. According to the concentration of hard gold plating solution, the gold plating solution is generally acidic, and its gold content is low,…
Edge plating is the process of plating a thin layer of copper and other metals on the sides of the PCB board according to the principle of electrolysis. The process of attaching a layer of metal film to the surface of metal or other material parts by electrolysis realizes that the side of the PCB…
A Printed Circuit Board, commonly known as a PCB, is a critical element in modern electronics. It serves as a foundation for electrical components and connections, enabling the assembly of complex electronic circuits. This article provides an in-depth look at the history, types, and significance of PCBs in the world of technology. The Evolution of…
There are many friends, they are not very clear about the “hard gold” and “soft gold” on the circuit board. It is still believed that electroplating must be hard gold, while chemical gold must be soft gold. Now let’s introduce: In fact, electroplating itself can be divided into hard gold and soft gold, because hard…
