What is the most important difference between a four-layer PCB and a double-sided board?

What is the important difference between a four- layer PCB and a double-sided PCB ?

Although the four-layer board is obtained by looking at the cut surface of the PCB board, this method is actually more difficult, and few people have such eyesight.

However, the four-layer board can be identified by observing the pilot hole. If the same guide holes can be found on both sides of the PCB board,

Or point the motherboard or graphics card to the light source. If the position of the guide hole is not transparent, it is a four-layer board.

The four-layer board is laminated on the basis of the double-sided board.

When pressing, PP and copper foil will be added on both sides of the double-sided board respectively.

Then it is pressed into a multi -layer board through high temperature and high pressure . In simple terms, the four-layer board has an inner layer,

In terms of process, some lines will be etched through the inner layer, and then pressed and pressed.

The double-sided panel is to directly cut the sent sheet and then drill and make it.

Shenzhen Tengxingsheng Electronics Co., Ltd. is a manufacturer specializing in the production of double-sided/multi-layer high-precision circuit boards . Since the company was founded in 2013, its products have been widely used in high-tech fields such as communications, electric power, industrial control, medical, military, instrumentation, etc. The main customers include CLP Holdings, Hekang Co., Ltd., Delixi and other well-known domestic and foreign enterprises.

Our company has a R&D and management team with many years of industry experience, equipped with more advanced production and testing equipment at home and abroad, and strictly implements the ISO9001 quality assurance system requirements throughout the production process.

The company has a production plant in Bao'an District, Shenzhen City, Guangdong Province, with a plant area of more than 1,500 square meters, about 120 employees, and a monthly production capacity of 5,000-8,000 square meters. Satisfaction is our responsibility, we strive to provide employees with development space, establish our own brand with a down-to-earth and steady spirit, and respect excellent quality, integrity-based, proficient in professionalism, and thoughtful service.