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Ask the Experts Index |
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Apr 15, 2026 Out-gassing and Cleaning I have created a series of PCBs with no solder mask. I will be soldering 2 spring pins, ... S.P. Apr 14, 2026 Contamination From Anti-static Foam I have a vintage computer board that is contaminated with what appears to be decomposed anti-static foam. The ... J.G. Apr 13, 2026 Organic Flux Residue Concerns What short-term and long-term concerns should we have with product reliability if we skip cleaning after rework? Our ... D. B. Apr 10, 2026 Lifted Lead on SOT Component We are having a high rejection rate with a SOT883 component where one of the small pads lifts ... R.D. Apr 9, 2026 Ultrasonic Cleaning and Surfactants I've heard that deionized water is a poor conductor of ultrasonic cavitations. Can we add a small amount ... R.P. Apr 8, 2026 Frequency of Temperature and Relative Humidity Tracking We have constant monitoring devices for temperature / relative humidity and are recording in our work/assembly areas. Is ... B.S. Apr 6, 2026 Pin-in-Paste Hole Stencil Printing We want to use a 8mil thick stencil to deposit paste into thru holes in a 93mil thickness ... E.P. Apr 3, 2026 Pre-bake in a Vacuum Can the time for pre-baking of components and bare PCBs to eliminate moisture be reduced by using a ... E.B. Apr 2, 2026 Considering Plasma Cleaning We build microelectronic circuits with various small pitch flip chip die's and an assortment of passive components. To ... T.G. Mar 31, 2026 Critical Part Fixture During Reflow I'm populating a PCA with a component that has critical placement requirements. My pick/place machine does not have ... R.W. |
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