Basic Knowledge of PCB Circuit Boards (3)

Seventh: Advantages of PCB

Due to the repeatability and consistency of the graphics, errors in wiring and assembly are reduced, and the maintenance, debugging and inspection time of the equipment is saved.

The design can be standardized to facilitate interchange.

The wiring density is high, the volume is small, and the weight is light, which is conducive to the miniaturization of electronic equipment.

It is conducive to mechanized and automated production, improves labor productivity and reduces the cost of electronic equipment.

Especially the bending resistance and precision of the FPC are better applied to high-precision instruments. (such as cameras, mobile phones, video cameras, etc.)

Eighth: Characteristics of PCB

The reason why PCB board can be used more and more widely is because it has many unique advantages, which are summarized as follows.

High-density. For decades, the high density of printed boards has been able to develop along with the improvement of integrated circuit integration and the advancement of mounting technology.

High reliability. Through a series of inspections, tests and aging tests, the PCB can work reliably for a long period of time (usually 20 years).

Designability. For PCB performance (electrical, physical, chemical, mechanical, etc.) requirements, printed board design can be achieved through design standardization, standardization, etc., with short time and high efficiency.

Manufacturability. With modern management, it can be standardized, scaled (quantified), automated, etc., to ensure product quality consistency.

Testability. A relatively complete test method, test standard, various test equipment and instruments have been established to detect and appraise the eligibility and service life of PCB products.

Assembled. PCB products are not only convenient for standardized assembly of various components, but also for automated and large-scale mass production. At the same time, PCB and various component assembly parts can be assembled to form larger parts and systems, up to the complete machine.

Maintainability. Since PCB products and various component assembly parts are designed and produced on a large scale, these parts are also standardized. Therefore, once the system fails, it can be replaced quickly, conveniently and flexibly, and the system can be quickly restored to work. Of course, there can be more examples. Such as miniaturization and weight reduction of the system, and high-speed signal transmission.

Ninth: The Difference Between The Soft and Hard PCB Board

Divided into rigid circuit boards and flexible circuit boards, flexible and rigid boards.

The intuitive difference between a rigid PCB board and a flexible PCB board is that the flexible PCB board can be bent. The common thicknesses of rigid PCB boards are 0.2mm, 0.4mm, 0.6mm, 0.8mm, 1.0mm, 1.2mm, 1.6mm, 2.0mm, etc. The common thickness of the flexible PCB board is 0.2mm, and the parts to be welded will have a thickened layer behind it. The thickness of the thickened layer varies from 0.2mm to 0.4mm. The purpose of understanding these is to provide structural engineers with a spatial reference when designing. Common materials for rigid PCB boards include: phenolic paper laminate, epoxy paper laminate, polyester glass mat laminate, epoxy glass cloth laminate; common materials for flexible PCB boards include: polyester film, poly Imide film, fluorinated ethylene propylene film.

XPCB Limited is a manufacturer specializing in the production of high-precision double-sided, multi-layer and impedance, blind buried vias, and thick copper circuit boards. The products cover HDI, thick copper, backplanes, rigid-flex combined, buried capacitance and buried resistance, golden Finger and other kinds of circuit boards, which can meet the needs of customers for all kinds of products.