JJY | How to Choose a Suitable Solder Paste?

Solder pasteIt is widely applied inPCBManufacture packaging and all kinds of other productsSMTIn the chip process, solder paste is a kind of soldering material, whose function is to solder various electronic components togetherPCBOn the panel. When faced with various processing techniques, how should one choose a suitable solder paste? The solder paste manufacturer offers the following suggestions for your reference:

1Lead-free solder paste and leaded solder paste

The choice between lead-free and leaded solder paste should be based on customer requirements and market demand. With the enhancement of people's environmental awareness, lead-free products are now widely accepted in the market. However, this does not mean that leaded solder paste has no market. Many electronic manufacturers still use leaded solder paste to save costs or in application scenarios that require extremely high reliability, such as military, aerospace, and power control. If your product is targeted at markets such as Europe, America, Japan and South Korea, it would be wiser for you to choose lead-free solder paste.

2Washed solder paste and no-wash solder paste

Whether to choose water-washed solder paste depends onPCBAThe processing technology after reflow soldering during the processing andPCBIt is determined by the cleanliness of the board.PCBThe rosin residue on the panel may cause a short circuit due to the heating, melting, deformation, deterioration and moisture absorption of large components during product use, reducing the reliability and service life of the product. In this case, it is necessary to increase the use of cleaning agents such as board cleaning water to clean the board, which is rather difficult and increases material and labor costs. The water-washable solder paste newly developed and produced by our company can be rinsed clean with deionized water. It is low-cost, convenient to use and very environmentally friendly.

3The proportion of solder paste alloy components

The proportion of alloys in the solder paste determines its melting point, which in turn determines the peak temperature of the reflow. When choosing a solder paste with a certain alloy ratio, you should consider several issues: What alloy ratio of solder paste is suitablePCBAWhat are the welding and operating temperatures during the processing? Consider the ductility and adhesiveness of different metal compositions? After considering the above issues clearly, we believe you can choose a solder paste that suits your processing technology.

During the selection process, you may not only need to consider the above issues, but also make your choice based on other important process requirements. These are for reference only. The above is all the content brought to you by JJY today. For more related information, please search for "JJY" to view. Welcome everyone to interact!