How to better manage and use SMT surface mount solder paste?

SMTIn processingSolder pasteIt is a solder paste with certain viscosity and good thixotropy, which is made by mixing powdered solder alloy, flux and some additives that have a viscous effect and other functions. inSMTDuring the soldering process of surface mount technology (SMT) processing, solder paste is a crucial factor in quality control. So, how can we better manage and utilize solder paste? Now, JJY solder Paste Manufacturer will briefly explain it to you:

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:

1Please 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.

2Preparations 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 content is shared by Shenzhen JJY Solder Paste Manufacturer for you. We hope it will be helpful to you. If you want to know more about solder paste andSMTKnowledge of surface mount technology (SMT) processing. Welcome to leave a message and interact with us!