Surface Treatment Technology in PCBA Processing

I. The definition and role of surface treatment technology

Surface treatment technology in PCBA processing refers to the treatment of the surface of the PCB board to ensure its good electrical performance and reliability. Surface treatment technology can enhance the corrosion resistance of the PCB board, improve the welding performance, but also can increase the appearance of the PCB board texture, enhance the overall quality of the product.

II. Common surface treatment technology

Common surface treatment technologies include lead-tin soldering, spray tin, spray silver, spray gold, chemical nickel gold and so on. These technologies have their own characteristics, according to product requirements and application scenarios for selection and application.

1. Lead-tin soldering

One of the most common surface treatment technologies, which can ensure good soldering performance and electrical conductivity.

2. Spray tin

Environmentally friendly surface treatment technology, can effectively prevent oxidation and improve the corrosion resistance of the PCB board.

3. Silver spray

Excellent conductivity and corrosion resistance, suitable for high requirements of electronic products.

4. Gold Spray Plating

High-grade surface treatment technology, with good conductivity and appearance texture, suitable for high-end electronic products.

5. Chemical nickel gold plating

Can be formed on the surface of the PCB board uniform metal nickel gold layer, improve the corrosion resistance and reliability of the PCB board.

III. The principle of choice of surface treatment technology

In the choice of surface treatment technology, need to consider the following aspects:

1. Product

According to the characteristics of the product and application scenarios to choose the appropriate surface treatment technology, such as high-frequency circuits need to choose the surface treatment technology with good conductivity.

2. Cost

Different surface treatment technology costs are different, according to the project budget and requirements for selection.

3. Environmental protection

in recent years, environmental awareness has gradually increased, the choice of environmentally friendly surface treatment technology is also a trend.

IV. Future development trend of surface treatment technology

1. High-performance

Surface treatment technology will be more and more to the development of high-performance to meet the electronic products for high-speed, high-frequency, high-reliability requirements.

2. Green

Environmentally friendly surface treatment technology will be more widely used to meet the growing awareness of environmental protection market demand.

3. Intelligent

with the development of intelligent manufacturing, surface treatment technology will also develop in the direction of intelligence, automation and intelligent production.

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