PCB printed circuit board making has a very complex process, so what problems should be paid attention to in PCB Board Processing? 1. First of all, pay attention to having a reasonable direction. In flexible printed circuit processing, various input/output, AC/DC, strong/weak signals, high frequency/low frequency, high voltage/low voltage, etc., their trends should be linear…
In today’s electronic product industry, metal core PCB is the most indispensable key component of the entire electronic product. Since there are many fields involved in PCB Circuit Board manufacturing, if you have not participated in the cheap PCB production process during the blank PCB board design operation, it will directly lead to more focus…
PCB dry film is a polymer compound, which produces a polymerization reaction after ultraviolet irradiation, forming a stable substance attached to the board surface, thereby achieving the function of blocking electroplating and etching. What are the types of FR4 Prototype PCB dry film? 1. Single-sided PCB Board The substrate material is mainly paper phenol (phenol) copper…
In the production process of Printed Circuit Board Fabrication, some process defects are often encountered, such as poor copper wire fall off of PCB circuit boards (also known as copper rejection), which affects product quality. The common reasons for copper rejection of PCB circuit boards are as follows: PCB Circuit Board Process Factors: 1. The…
What problems should be paid attention to when choosing lead-free components for lead-free process? 1. The heat resistance of the components must be considered Due to the high melting point of lead-free solder, one of the characteristics of the SMT lead-free soldering process is the high soldering temperature, which brings about the problem of heat…
PCB open circuit is a problem that PCB manufacturers encounter every day. What is PCB open circuit? In simple terms, a PCB open circuit is two points that should be connected together (point A and point B), but are not connected together. What is PCB Open Circuit 1. Repeated open circuit It means that the…
There are many factors that affect the size of the PCB pad. When designing the size of the pad, the range and tolerance of the component size, the need for the size of the solder joint, and the accuracy, stability, and process capability of the substrate (such as positioning and placement accuracy, etc.) should be…
The hot air leveling process of PCB is to immerse the printed circuit board in molten solder, and then use hot air to blow off the excess solder on the surface and metalized holes to obtain a smooth, uniform, and bright solder coating, which has good solderability. The coating is completely free from exposed copper….
The working environment of the multilayer PCB will be subject to different external interferences. This interference on PCB Circuit Boards may be interference from the power supply, interference from the space electromagnetic field, and interference from the ground wire. So, what are the measures to suppress interference on the electronic board? 1. Filtering: A filter…
There are many differences between the flex and rigid board in the CAD design of rigid-flex PCB 1. Design requirements for flexible zone circuits. （1）Avoid sudden expansion or contraction of the line and adopt a tear shape between the thick and thin lines. （2）When the pad meets the electrical requirements, the maximum value should be…