Electronics Forum | Mon May 16 18:47:39 EDT 2011 | padawanlinuxero
As strange it could sound, fired them!, well not all of them at the same time, but some folks and make them understand that they are fired because the lack of performance
Electronics Forum | Thu Apr 05 08:21:52 EDT 2012 | rway
Yes, but no guarantee of solderability. This just puts more paste on the pads. From my experience, unsoldered QFN parts are not due to lack of solder, but reflow.
Electronics Forum | Tue Jun 05 06:37:48 EDT 2012 | mosborne1
Definition: Pink Ring - A condition that can exist in multilayer printed circuit or wiring boards, in which the oxide around a through-hole inner layer interface is chemically removed, and there is a lack of adhesion of the inner layer to the dielec
Electronics Forum | Mon Feb 25 08:29:14 EST 2013 | cyber_wolf
I do not have the warm and fuzzy feel about these coatings due to the lack of supporting data. Aside from trying to save some money on wiper paper I do not see an advantage that would justify it.
Electronics Forum | Fri Jun 12 07:14:36 EDT 2015 | gabinocf
Thanks by your response, at this moment I have problems in a Lead Free process the issues that i have are solder peaks, by my understanding this conditions is due to lack of flux, bad temperature profile or the dwell time is too long. My concern is,
Electronics Forum | Wed Jan 27 20:18:42 EST 2016 | lordorica
Trying to find a laser marking machine. Thing is that most of my pcbs have white solder mask, so the when trying to read the 2D code is difficult due to the lack of contrast. Any idea? a different technology? regards
Electronics Forum | Fri May 17 07:38:30 EDT 2019 | stephendo
If it happened after a high energy event then maybe the root cause is a lack of TVS diodes in the design of the circuit. Or if they are ceramic diodes then maybe they are too close to the edge and have flex cracks.
Electronics Forum | Fri Aug 02 16:48:22 EDT 2019 | slthomas
Based on the lack of participation by the OP you may very well be right as far as how much time this discussion merits. For all we know he may very well have been looking for one of these:
Electronics Forum | Fri Jun 10 19:02:57 EDT 2022 | llawrence
Yes they are far from ideal. What do you mean by profiling on the problem leads? And yes there is a lack of solder on some, but there are no vias in or near any of the pads that could be stealing solder
Electronics Forum | Mon Nov 14 03:48:18 EST 2022 | frankchan
Maybe also check the air pressure, the lack of air pressure could also sometimes make the head lose grip on the nozzles
