Questions and Comments

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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

Jun 10, 2024
Solder Paste Printing First Pass
The viscosity of paste reaches optimum during a few kneed strokes and this procedure should be followed for all but the easiest to print (Area ratio above 0.7) boards. During these kneed strokes if you ...
Robert Gray

Jun 3, 2024
What Causes Solder Icicles During Wave Soldering
All hints so far are very helpful. You can also check if the solder pump is not impeded by dross and working fine driving enough solder flow. This wave soldering process is very old, but ...
Luc Mitrea, Wittenstein SE

May 30, 2024
What Causes Solder Icicles During Wave Soldering
Boy you guys are old. Check the flux, be careful of low solid content flux, it may burn off as stated and also check the conveyor speed and the conveyor angle to verify the solder ...
Leo Lambert, EPTAC

May 20, 2024
Can Silver Cause Solder Embrittlement?
I worked with boards and cabling for over 30 years. Most of the wire we used was silver plated, for thermal and electrical conductivity. In aircraft applications, there was obviously a lot of vibration, especially ...
Dave Good