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What are the storage and usage conditions for solder paste in SMT assembly?
source: JJY Release Date: 2022-05-28

Nowadays, in society, there areSMTIn this industry's factories, solder paste is an indispensable auxiliary material. There are many types of this product with different specifications. How to choose the right one? This has a significant impact on product quality and cost. In this regard, people pay more attention. Next, the solder paste manufacturer will explain to you how to handle the specific storage and conditions.

Solder paste

I. Methods for Storing Solder Paste

1During the shipping process, the time is4For about a few days, the temperature environment needs to be controlled below10℃;

2In the shelf refrigeration, time is3-6After about a month, the temperature environment of the refrigerator needs to be controlled at0-5℃;

3The solder paste was taken out of the refrigerator8Within an hour, the humidity is30%-60%RHThe ambient temperature is15%-25%℃.

4. It must be stored in2~10℃Under such conditions.

5. It is required to remove the solder paste from the refrigerator the day before use (at least in advance)4The container lid can only be opened after the solder paste has reached room temperature to prevent water vapor condensation.

6. Before use, stir the solder paste evenly with a stainless steel stirring knife or an automatic mixer. When stirring manually, stir in one direction. The stirring time by machine or manually is3~5min.

SMTThe application environment of solder paste in surface mount technology:

1.Please put the solder paste in the refrigerator immediately after receiving it3-7℃ Store it in the refrigerator. Note that solder paste must not be frozen for storage.

2.Preparations before solder paste printing: Before taking the solder paste out of the refrigerator and putting it into the printing process, the following must be done2The operation of each step

Do not open. Leave at least at room temperature4-6It takes more than an hour to allow the temperature of the solder paste to naturally rise back to room temperature.

After the temperature of the solder paste reaches room temperature, it should be stirred before being put into printing to ensure that all components in the solder paste are evenly distributed. It is recommended to use a dedicated stirring device and stir in the same direction1-3It only takes minutes.

The above is an explanation for everyoneSMTHere are the basic storage conditions. Everyone should also have a corresponding understanding. I hope it can be helpful to you. If you still want to know more about solder paste,Lead-free solder pasteWelcome to consult us for problems related to soldering methods such as solder paste!!


edit: JJY

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