Because the manufacturing process of printed circuit board is complex and the process is cumbersome, there are many quality defects in its manufacturing process, which seriously affects the quality of the final product. In order to reduce the unqualified rate of PCB and effectively control the quality defects in the production process, the main quality …
PCB Quality Defects: Porous Metallization & Etching Process Read More »
Because the manufacturing process of printed circuit board is complex and the process is cumbersome, there are many quality defects in its manufacturing process, which seriously affects the quality of the final product. In order to reduce the unqualified rate of PCB and effectively control the quality defects in the production process, the main quality …
Analysis of Main Quality Defects of PCB: Lamination & Drill Process Read More »
Characteristics of Copper Copper element symbol Cu, atomic weight 63.5, density 8.89g/cm3, electrochemical equivalent of Cu2+ is 1.186g/a. H. Copper has good conductivity and good mechanical properties. Copper is easy to activate It can form good metal to metal bonding with other metal coatings, so as to obtain good adhesion between coatings. Principle of Copper Electroplating …
Copper Electroplating: Copper Electroplating Solution Read More »
PCB exposure means that under UV irradiation, the photoinitiator absorbs light energy and decomposes into free radicals, which then lead to the polymerization and crosslinking reaction of luminescent polymerized monomers. After the reaction, a large molecular structure insoluble in dilute alkali solution is formed. Exposure is generally carried out in the automatic double-sided exposure machine. …
How to Determine The PCB Exposure Time & Positioning? Read More »
PCB circuit board exposure includes circuit exposure and solder resist exposure. The function is to solidify the irradiated local area through ultraviolet irradiation, and then develop it to form circuit pattern or solder resist pattern. The process of line exposure is to paste the photosensitive film on the copper clad laminate first, and then expose …
Refer to PCB manufacturing process, after the PCB has been PTH(plated through hole) & PP(Panel Plating), it is time to do Membrane Pasting. A layer of blue dry film is pressed on the laminated circuit board. The dry film is a carrier and is very important in the circuit process. The dry film process is …
Rigid-flex Board Introduction The combination of hardware and software has been developed for more than 25 years, but it has always been regarded as a special and expensive board. At first, it was used in aerospace and military. In the past few years, it has successfully transferred to the electronic consumer market. Because of its …
Special Boards Manufacturing Process Introduction: Rigid-flex PCB Read More »
There are many types of metal-based printed boards. Aluminum PCB is one of most used metal PCB. Today we will introduce the produce process of single-sided aluminum PCB. Single-sided Aluminum PCB Produce Process Cutting Generally, a base material with a protective film on the aluminum surface is used. After cutting, the board does not need to be …
Metal Substrate PCB Metal Substrate PCB Introduction Metal Substrate PCB Definition Metal Substrate PCB Application Aluminum PCB Characteristic Aluminum PCB Classification Aluminum PCB Materials : T-preg & T-lam Properties, Application of materials, Supply Specification Metal Substrate PCB Structural Style Metal Substrate PCB Introduction 1. In the 1960s and 70s, the Ministry of International Trade and …
Metal Substrate PCB: Definition, Characteristics, Application and Classification Read More »
The basic concept of the rigid-flex PCB board has been proposed in the patent at the beginning of this century. In 1947, the American Aviation Administration and the American Bureau of Standards initiated the first technical seminar on printed circuits. At that time, 26 different printed circuits manufacturing methods were listed. It is summarized into …
The Origin and Development History of Rigid-flex PCB Board in China Read More »
