Electronics Forum | Mon Jan 22 09:35:34 EST 2007 | saaitk
Check that your boards haven't been over plated. Too much plating in the hole can slump to the underside of the board during reflow. If you are then press fitting on the underside of the board you can have problems with hole diameter. If the hole is
Electronics Forum | Mon Jan 22 03:51:16 EST 2007 | Bing
We are using HASL board for Press Fit, without problem in the past until recently. Now we are seeing the solder in the PTH melt and block partially the PTH hole during the reflow. It gives problem when Press Fit. Anyone has advice on this?
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Imagineering, Inc. | https://www.pcbnet.com/blog/hdi-microvias-and-printed-circuit-boards/
” on layers of a printed circuit board. In the process, microvias have not only allowed for the functionality of a computer to fit in our pockets, but has led to decreased costs for consumers as well as greater reliability and efficiency
ASYMTEK Products | Nordson Electronics Solutions | https://www.nordson.com/en/divisions/efd/resources/solder-dictionary-of-terms
fit for use. Surface Insulation Resistance (SIR) Test defined in IPC TM-650 2.6.3.3 used to classify flux. Flux is reflowed on a set of interdigitated traces and an electrical potential is supplied. A passing test maintains a resistance value of 1x108
