What function does pcb board resin plug hole have

In the 1990s, a Japanese company developed a resin that plugs the hole directly and then coatings the surface with copper, mainly to solve the problem of blowing air into the hole that is prone to green oil plugs. Intel applied this process to its electronics, creating the so-called POFV (also known in some factories as Via on pad).

In recent years, the process of resin plug hole has been used more and more widely in the PCB industry, especially in some high layer, the board thickness of the product is favored. It was hoped that the use of resin plug holes would solve a range of problems that could not be solved by using green oil plug holes or pressing and filling resins. However, because of the characteristics of the resin used in this process, many difficulties need to be overcome to obtain good quality resin plug products.

The role of PCB board resin plug hole:

PCB uses resin plug holes. This process is usually due to BGA parts, because traditional BGA may make VIA to the back between PAD and PAD for wiring, but if BGA is too dense and the VIA cannot go out, it can be drilled directly from PAD to make via to other layers for wiring, and then the hole is filled with resin and copper plated to become PAD. That is, the commonly known VIP process (via in pad), if it is only done on the PAD via without resin plug hole, it is easy to cause tin leakage leading to short circuit on the back and front air welding.

The manufacturing process of PCB resin hole includes drilling, electroplating, plugging, baking and grinding. After drilling, the hole will be plated through, and then the resin will be plugged and baked. Finally, it will be ground flat. Then the other holes are drilled and the normal process is followed.

If the plug hole is not plugged, when there are bubbles in the hole, because the bubbles are easy to absorb moisture, the board may explode when the tin furnace, but in the process of the plug hole if there are bubbles in the hole, when baking bubbles will extrude the resin, causing a depression and a prominent situation, at this time you can detect defective products, and there are bubbles on the board is not likely to explode, because the main cause of the explosion is moisture, So if the board is just out of the factory or the board is baked on the piece, generally speaking, it will not cause the explosion of the board.

Guangzhou pcb board manufacturer introduction

Guangzhou, referred to as "Chang" and nicknamed Dragon City, is a prefecture-level city in Jiangsu Province. Approved by The State Council, Guangzhou is one of the central cities in China's Yangtze River Delta region, an advanced manufacturing base and a famous cultural tourism city. Located in East China and southern Jiangsu Province, Guangzhou is an important part of the Yangtze River City cluster, bordering the Yangtze River to the north, Taichung Lake to the east, Shaman Mountain to the west and Titian Mountain to the south. It is equidistant from Shanghai and Nanjing. Guangzhou is a plain in the lower reaches of the Yangtze River, with high sand plain and hills and lakes, belonging to the north subtropical monsoon climate.

Guangzhou PCB Board factory introduction:

1. Guangzhou Jinni Changsha Electronics Co., LTD

Changsha Electronics Co., Ltd. is a professional manufacturer of all kinds of single and double sided printed boards, whose products have passed UL safety certification. The company has more than 20 years of professional production and management experience of printed boards, committed to equipment update and technical progress, and has passed ISO9000 quality system certification, and strives to continue to improve, to meet the needs of customers now and in the future.

2. Guangzhou Jinni Changchun Electronics Co., LTD

Guangzhou Jinni Changchun Electronics Co., LTD., founded in 1987, is a professional factory specializing in the production of all kinds of single and double-sided printed circuit boards. Accumulated many years of experience in the production of circuit boards, improve the process of circuit boards.

3. Guangzhou Ataxia Circuit Board Co., LTD

Guangzhou Ataxia Circuit Board Co., LTD., established on July 1, 1985, the business scope includes circuit board (except gold and silver), TV video amplifier converter manufacturing, processing, etc.

4. Guangzhou Shanghai Electronic Appliance Co., LTD

Guangzhou Shanghai Electronic & Electrical Co., Ltd. was established on June 18, 2002. Its business scope includes circuit board, electric tools, micro special motors, low voltage electrical appliances, plastic products manufacturing and processing, metal materials sales, etc.

5. Guangzhou Shijiazhuang Electronic Co., LTD

Guangzhou Shijiazhuang Electronic Co., LTD., established on Jul. 07, 1987, is engaged in the manufacture of printed circuit boards, electronic components, new electronic and electric equipment, plastic products, laminate flooring, decorative paper ginning and so on.