What should be done if the conductivity of SMT solder paste is not good after soldering?

In useSolder pasteWhen doing the work, you may occasionally encounter the situation where you often fail to come into contact with the current during the post-furnace test. After testing the solder pads with a multimeter, it was found that only when the layer of keratin on the upper surface of the solder pads after passing through the oven was removed would there be a path. Is this a problem with the solder paste or is it normal Really? Now, let's talk about it from JJY solder Paste Manufacturer:

What should be done if the conductivity of solder paste is not good after soldering? Now I'll share some tips with my friends:

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

2. Clean the contact of the test needle before the testPADEnsure 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.

From here6If all aspects are maintained, the pass rate of the conductivity of solder paste after soldering can be greatly improved. The above little knowledge is hoped to be helpful to your partners. For more solder paste knowledge, please continue to follow JJY Solder Paste Factory and leave a message online to interact with us!