PCB News - PCBA and PCB industry news. page 125

2020-11-10

With the development of products such as smart phones, tablet computers and wearable devices in the direction of miniaturization and multi-functionality, the technology of high-density interconnection printed circuit boards has been continuously improved. The distance, as well as the thickness of the conductor layer and the insulating layer are constantly decreasing, so that the number of layers of the PCB can be increased to accommodate more components without increasing the size, weight, and volume of the PCB. In addition, with the increase of wireless data transmission bandwidth and processing speed, the electrical performance of the PCB becomes extremely important.

2020-11-10

Careful netizens may find that there are still black things on some circuit boards in our country. So what is this method? Why are they on the circuit board? What is the important role in the end? In fact, it is used as a kind of packaging. We can often call it "soft packaging", saying that soft packaging is actually for students. For "hard", it The material of the component is epoxy resin. We usually see the receiving surface of the receiving head through this teaching material. Inside it is the chip IC. This traditional process is called "bonding", and we usually call it "binding". set".

2020-11-09

Using the difference in the absorption rate of different substances to X-rays, fluoroscopy the parts that need to be tested and find defects. It is mainly used to detect defects in ultra-fine pitch and ultra-high-density circuit boards, as well as bridging, missing chips, poor alignment and other defects generated during the assembly process. It can also use its tomographic imaging technology to detect internal defects in IC chips. It is the only way to test the soldering quality of the ball grid array and the blocked solder balls. The main advantage is the ability to detect BGA welding quality and embedded components, without fixture cost; the main disadvantages are slow speed, high failure rate, difficulty in detecting reworked solder joints, high cost, and long program development time. This is a relatively new test. The method remains to be further studied.

2020-11-07

Pecial engineering plastics refer to high-performance engineering plastics with long-term use temperatures above 150°C. They are the third generation plastics developed after general plastics and engineering plastics. They have the advantages of heat resistance, insulation, corrosion resistance and high mechanical strength. , The main varieties are polyphenylene sulfide, polyimide, polysulfone, aromatic polyamide, polyarylate, polyphenylester, polyether ether ketone, liquid crystal polymer and fluororesin.

2020-11-07

PCB (printed circuit board) is a printed circuit board, abbreviated as printed circuit board, which is one of the important basic component problems in the electronic technology industry. Almost every kind of electronic information equipment, from electronic watches, calculators, to computers, communication development electronic control equipment, military weapon systems, as long as there are electronic components such as integrated management circuits, in order to make the electrical interconnection between the various components , All through the use of printed boards.

2020-11-06

Multi-layer boards are multi-layer or multi-layer printed circuit boards, which are circuit boards composed of two or mo...

2020-11-06

As the introduction rate of rigid-flex boards in electronic products is getting higher and higher, the importance of PCB industry continues to increase. In the past, rigid-flex boards were mostly used in the field of mobile phone batteries, and the market has gradually become popular among PCB companies such as Huatong and Xinxing. However, after the emergence of new applications such as lens modules, display modules, true wireless Bluetooth headsets, and wearable devices, more and more manufacturers are willing to invest. In addition to Taiwan’s small and medium-sized enterprises Yaohua and Dingying, the leading players Factory Zhending and many mainland Chinese manufacturers have begun to deploy.

2020-11-05

High-frequency circuit boards can be said to be quite high in terms of physical performance and accuracy, or in terms of technical parameters; it is a special circuit board with relatively high electromagnetic frequency. It is part of the main process of using these common rigid circuit board manufacturing research methods on the microwave base copper clad board or the circuit board produced by the company using a special data processing method. Generally speaking, a high-frequency board can be defined as a circuit board with a frequency above 1GHz.

2020-09-15

China is now in the good situation of economic construction as the center and reform and opening up, the annual growth rate of the electronic industry will be more than 20%, the printed circuit board industry will follow the trend of the entire electronic industry will also rise, and more than 20% growth rate....

2020-09-15

As high frequency RF (radio frequency) and PA (power amplifier) and other high-power electronic components have higher requirements for P​CB heat dissipation capacity, the industry began to introduce the manufacturing process of embedding copper block in PCB, which is called embedded copper plate.

2020-09-12

HDI circuit board is short for High Density Interconnector.High Density interconnection (HDI) manufacturing is one of the fastest growing areas in the printed circuit board industry.

2020-09-11

As high-frequency PCB technology and products occupy a more and more important position, high-speed development of high-frequency PCB board has also appeared.

2020-09-11

High frequency circuit board is a special circuit board with high electromagnetic frequency. Generally speaking, high frequency can be defined as frequency above 1GHz.Its physical performance, accuracy and technical parameters are very high, and it is often used in automobile anti-collision system, satellite system, radio system and other fields.

2020-09-09

How to distinguish FFC connector from FPC connector

2020-09-09

What are the pros and cons of FPC wiring?Here's a brief overview:

2020-09-03

FPC flexible circuit board glue overflow refers to the glue line flow in COVERLAY due to the rising temperature in the pressing process, which results in the glue stain problem on the PAD of FPC flexible circuit board.

2020-08-31

Citic Construction investment securities published a "non-ferrous metal industry: Copper foil, What Do I worry about most?"

2020-08-31

Welding is an indispensable link in SMT patch process. If there is a mistake in this link, it will directly affect the chip processing circuit board is unqualified or even scrapped. Therefore, it is necessary to master the correct welding method and understand the relevant matters needing attention to avoid problems during welding.

2020-08-28

What should I do if the circuit board of the washing machine is broken

2020-08-28

Have you ever imagined what ET's circuit board looks like? Could it also be a simple PCB?