How to deal with poor conductivity after welding? -SMT solder paste

inSMTDuring the post-furnace testing, it is often found that the current does not pass through frequently. After the solder pad is tested with a multimeter for a path, it is discovered that only when the layer of keratin on the upper surface of the solder pad after passing through the furnace is removed will there be a path. Then,SMTSolder pastePoor conductivity after welding. How should we deal with this problem? Now, Shenzhen JJY solder Paste Manufacturer will explain:

First, try to reduce the residue of solder paste. It is recommended to use no-rinse solder paste.

Before conducting the test, the contact of the test needle must be cleanedPADTo ensure that it is clean and free of impurities;

Third, select the appropriate model and size of the test needle, striving for a wide range of contact surfaces while ensuring good penetration.

Fourth, check whether the temperature curve meets the requirements for solder paste, and pay special attention to whether the constant temperature time is sufficient.

5. Check whether the solder paste has been used after the normal warming time and whether the bottle opening period has passed.

Six. The solder paste itself has poor electrical conductivity. It is recommended to choose solder paste containing silver.

Through the above6By maintaining from all aspects, the pass rate of the conductivity of solder paste after soldering should be effectively improved.16For many years, JJY has been dedicated to the research and development, production and sales of solder paste, providing customers with a complete set of electronic soldering solutions. If you want to learn more about solder paste, please keep following JJY Solder Paste Manufacturer and leave a message online to interact with us.