Surface Mount Technology Association (SMTA) | https://www.smta.org/msd/msd.cfm
. High vacuum can actually be detrimental by increasing the amount of moisture diffusion through the bag. 4. The bag seal date and the 12 months minimum shelf life is not an expiration date
Imagineering, Inc. | https://www.pcbnet.com/blog/how-to-prevent-a-solder-ball-defect/
– Problems in the solder paste itself can contribute to the formation of solder balling. Thus, it is not advised to re-use solder paste or allow the usage of solder paste past its expiration date
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