Welding resistance film design skills

In fact, no matter what type of PCB designsoftware you prefer to use, soldering masks are optional. The welding mask can be easily designed by completing the filling of a few parameters. Some software even offers automatic welding of masks. 

Prior to the actual design, it is essential to contact a contracted PCB manufacturer to properly understand their capabilities in terms of the thickness of the welded mask and the minimum spacing between the brazing pads, which are not cured per plate. 

Boards will fail due to silly problems with welding masks (such as not enough openings, too many openings, and a mismatched number of openings to the brazing pads in the circuit plane). These problems can result from negligence or design document changes, but they do take a long time. Some even cause disasters. Therefore, your design document is well worth a close look.

Understand the difference between aluminum substrate and pcb board

What is aluminum substrate

Aluminum substrate is a kind of metal base copper-covered plate with good heat dissipation function. Generally, a single panel is composed of three layers, which are circuit layer (copper foil), insulation layer and metal base layer. Common in LED lighting products. There are positive and negative sides, the white side is welded LED pin, the other side shows aluminum color, generally coated with thermal coagulation and thermal part contact. There are ceramic substrates and so on.

What is a PCB board

PCB board generally refers to printed circuit board. Printed circuit board {PCB circuit board}, also known as printed circuit board, is the electrical connection provider of electronic components. It has a history of more than 100 years; Its design is mainly layout design; The main advantage of using circuit board is to greatly reduce wiring and assembly errors, improve the level of automation and production labor rate.

According to the number of layers of the circuit board can be divided into single panel, double panel, four layer board, six layer board and other multilayer circuit boards. Because the printed circuit board is not a general terminal product, so in the name of the definition is slightly confused, for example: personal computer with the mother board, called the motherboard, but not directly called the circuit board, although there is a circuit board in the host board, but not the same, so the evaluation of the industry about the two can not say the same. Another example: because there are integrated circuit parts on the circuit board, so the news media called it IC board, but it is not the same as printed circuit board. What we usually refer to as a printed circuit board is a bare board - a circuit board with no components on it.

Aluminum substrate and pcb board difference

For some just engaged in the aluminum substrate industry partner will always have such a question, that is, what is the difference between aluminum substrate and pcb board, in view of this question below Xiaobian on the specific to tell you what the difference between the two in the end?

pcb board and aluminum base board are designed in accordance with the requirements of pcb board. At present, aluminum base pcb board in the market is generally single-sided aluminum base board, pcb board is a large type, aluminum base board is only a type of pcb board, aluminum foundation board, because of its good thermal conductivity, generally used in the LED industry.

Generally speaking, pcb board is copper substrate, which is also divided into single panel and double panel, the material used between the two is very obvious difference, aluminum substrate is the main material of aluminum plate, and pcb board is the main material of copper. Aluminum substrate because of its PP material special. The heat dissipation is better. The price is also more expensive

Compared with the two in heat dissipation, the performance of aluminum substrate in heat dissipation is more superior and pcb board, its thermal conductivity is not the same. Aluminum substrate is a kind of PCB, and the price of aluminum substrate is more expensive.

A wave of price cutting is brewing in the global automotive panel market

In the fourth quarter of last year, the trade war between the United States and China once extended into the auto market, hitting the demand momentum and making the global auto electronics manufacturers conservative in their orders for auto panels. The current situation has not improved until the first quarter of this year, and the expectation of Jingpeng, the dominant auto panel manufacturer, that the demand will rebound in the second quarter may also be disappointed. The second half of the year will set off a wave of price grab single tide.

The main reason for this situation is that after the trade war between the United States and China, the consumption of the global car market tends to wait and see, and the consumption power of replacing cars shrinks. Moreover, the huge electric car manufacturers such as Tesla expand production aggressively and reduce prices to attract buyers. In addition, the original international automobile brands strongly emphasize the determination of developing electric cars, which makes consumers more hesitant to choose between fuel cars and electric cars. Even the purchase of the original car was withdrawn.

The combination of tight demand and new production capacity has led to pessimism that the second half of the year will see a repeat of the 2017 wave of cut-price competition.

This situation of demand contraction still did not improve until the second quarter of this year, but in the past, the gross profit margin of the automotive panel market was higher than that of the information and communication products. Besides Jingpeng, the revenue of Jiading automotive panel last year also accounted for 20.3% of the overall structure, becoming the largest product application and the largest project, and the absolute revenue exceeded 10 billion yuan for the first time. And new manufacturers such as competition country, Tai Ding, Jingcheng Branch and other PCB factories, also actively enter the layout, the competition facing the car board continues to intensify.

At present, the new country to join the war, Thailand factory has obtained the certification of European automotive electronics factory, and entered mass production, the Thai factory in the first quarter of this year to profit, this year is also expected to profit, This is also our major mission to expand our business in the automotive electronics market after our factory in Thailand has obtained the Continental Certification of Tier 1 Automotive electronic Components Factory (German automotive Supply chain certification).