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Questions and CommentsHave you got something to say? Visit any program page and use the Comment form at the bottom of the page to submit a comment or ask a question. Comments and questions are reviewed prior to posting. |
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Jun 28, 2024 How Long Solder Paste Can Be Left On a Stencil Without Activity Testing for Environmental factors should include seasonal changes. Most larger manufacturing operations I have worked in have big temperature and humidity swings between the middle of winter and the middle of summer, while still falling ... Alan Woodford, Zentech Jun 28, 2024 The Quest for Reliability Standards Test methods must relate to fundamental engineering principles and never be tied to proprietary intellectual property. Methods must be interchangeable with actual product or test specimens otherwise must always require a statistically established correlation for ... Jerry Magera Jun 26, 2024 How Long Solder Paste Can Be Left On a Stencil Without Activity The stand-time is the factor to look at. I contacted the paste manufacturer, and, with our particular paste, 45 minutes was declared as the absolute limit. Empirical issues prompted the need to contact the paste ... Jaye Waas, Renkus-Heinz Jun 15, 2024 The Best Storage Method to Protect Against Corrosion There is another way to avoid corrosion on PCB's, it is a more economical packaging (no more vacuum seal needed, no more desiccants and indicators). this packaging is extruded (LDPE) with a corrosion inhibitor additive ... Matias Aliseda, ESTATEC Jun 12, 2024 The Best Storage Method to Protect Against Corrosion Over-all Nitrogen is the best. But, if the boards have contamination as from Sulfuric acid, H2SO4, residue the chemical contains oxygen which will cause local reaction, even in a nitrogen atmosphere. I have received sample ... Jaye Waas, Renkus-Heinz |
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