PCB And PCB Assembly

1. The difference between PCB and PCB Assembly

(1) The difference between name and purpose

PCB is an important electronic component, which is used to support electronic components to realize the connection of electronic components. PCB is the provider of electrical connections of electronic components, and its design is mainly layout design. The main advantages of using circuit boards are that they greatly reduce errors in wiring and assembly, improve the level of automation and production labor rate, and PCBs have existed for more than 100 years.

PCBA is the abbreviation of Printed Cirruit Board Assembly, which is generally translated as PCB Assembly. It is to pass the PCB blank board through SMT patch, DIP plug-in and testing and other processes to form a finished product, referred to as PCBA.

(2) The difference between function and essence

A PCB can make a program that cannot run independently a unit that runs independently. The excellent circuit design of PCBA can achieve good circuit performance and heat dissipation performance. PCBA generally refers to a processing process, which can also be said to be a finished circuit board, that is, the PCB is completed after processing. A PCB is a physical printed circuit board that does not have any components assembled.

Image 1: PCB Assembly

2. The difference between PCB and integrated circuit

Integrated circuits generally refer to the integration of chips, like the northbridge chip on the motherboard, inside the CPU, are called integrated circuits, and the original name is also called integrated block.

Printed circuits refer to circuit boards that we usually see, as well as printing soldered chips on circuit boards. Integrated circuits (ICs) are soldered to PCBs, and PCBs are the carriers of integrated circuits (ICs).

Printed circuit boards can be found in almost every electronic device. If there are electronic parts in a device, the printed circuit boards are embedded in PCBs of various sizes.
In addition to fixing various small parts, the main function of the printed circuit board is to electrically connect the upper parts to each other.

To put it simply, an integrated circuit is to integrate a general circuit into a chip, which is a whole. Once there is damage inside the IC, then the chip is also damaged. The PCB can solder the components by itself, and the components can be replaced if they are broken.

Image 2: IC Packaging on PCB

3. Advantages of PCB

PCB circuit board is one of the most important hardware of electronic equipment, is an important part of all kinds of electronic components, PCB circuit board is generally connected to the equipment to be able to supply electricity to make it run

A. For more than 100 years, the high density of printed boards has been developed with the improvement of integrated circuit integration and the progress of installation technology;

B. High reliability, through a series of inspections, tests and aging tests, etc., it can ensure that the PCB works reliably for a long time;

C. Designability, various performance requirements of PCB, printed board design can be realized through design standardization and standardization, etc., with short time and high efficiency;

D. Producibility, modern management is adopted, which can carry out standardized, large-scale, automated and other production to ensure product quality consistency;

E. Testability: A relatively complete test method, test standard, various test equipment and instruments have been established to detect and identify the qualification and service life of PCB products;

Image 3: Automotive PCB Assembly​

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

G. Maintainability, because PCB products and various component assembly components are designed and produced on a large scale, therefore, these components are also standardized. Therefore, once the system fails, it can be replaced quickly, easily and flexibly, and the system can be quickly restored.

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