What is the difference between PCB and PCBA in the opinion of SMT processing plants? I believe that even professionals who have been working in the electronics industry for many years cannot provide an accurate answer, and many people may confuse the concepts of PCB and PCBA. So what is PCB? What is PCBA? What are the differences between PCB and PCBA? How to choose a good PCB manufacturer? Below, the author will explain to you.
1、 About PCB
The Chinese name for PCB is printed circuit board, also known as printed circuit board or printed circuit board. It is an important electronic component, a support body for electronic components, and a provider of electrical connections for electronic components. Due to its use of electronic printing technology, it is called a "printed" circuit board.
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2、 About PCBA
PCBA。 It refers to the assembly of various electronic devices on circuit boards through surface packaging technology. Next is the box assembly, which involves assembling the assembled PCB with the casing and other components to form the finished product. That is to say, the entire process of PCB blank board loading through SMT and then passing through DIP plug-in, abbreviated as PCBA. This is a commonly used writing method in China, while the standard writing method in Europe and America is PCB'A, which adds a diagonal point. PCBA is a PCB with a chip attached.
3、 Differences between PCB and PCBA
1. Conceptually: PCB refers to circuit board, while PCBA refers to circuit board plug-in assembly and SMT process.
2. Differences: PCB and PCBA are finished boards and bare boards. PCB (Printed Circuit Board) is called a "printed circuit board" and is made of epoxy glass resin material. According to the number of signal layers, it is divided into 4, 6, and 8 layers, with 4 and 6 layers being more common. Chip and other SMD components are attached to the PCB. PCBA can be understood as a finished circuit board, which means that only after all the processes on the circuit board are completed can PCBA be counted.
3. Process: The entire process of PCB blank board loading through SMT and then passing through DIP plug-in, abbreviated as PCBA. PCB, on the other hand, usually refers to a conductive pattern made of printed circuits, printed components, or a combination of both on insulating materials according to predetermined design, known as a printed circuit. The conductive pattern that provides electrical connections between components on an insulating substrate is called a printed circuit. In this way, printed circuits or finished boards of printed circuits are called printed circuit boards, also known as printed boards or printed circuit boards.
4、 How to choose a PCB manufacturer
1. The hardware implementation of the factory itself meets foreign standards: Nowadays, Germany, Japan, and * * are the best manufacturers of PCBs. As we all know, equipment in Japan and Germany is very expensive, which increases the threshold for suppliers, which is beyond the reach of ordinary enterprises.
2. Corporate social responsibility meets international standards: Currently, when collaborating with foreign clients, larger ones will require social responsibility audits. This means that your company's work environment, salary level, working hours, wastewater treatment, employee benefits, etc. need to be in line with international standards, which is beyond the reach of ordinary small businesses.
3. Strong financial resources of the company: Only companies with strong financial resources can support the development of high-precision and cutting-edge products, with HDI laser drilling equipment of 1000W and ordinary mechanical drilling equipment of 100-200W. Without financial support, the factory has no development prospects.
How to find a suitable and reliable supplier in a mixed market? Stable PCB quality is the key. Experts who understand PCB know that the price and quality differences of chemical metals directly affect the performance and time of product use. Generally speaking, the use time of chemical gold is six months, while the use time of chemical copper is one year, resulting in a significant price difference. PCB should not only seek cheap prices, stable quality will bring long-term orders.