Electronics Forum | Thu Jul 14 00:54:53 EDT 2005 | Pyramus
Hi production encountered a problem today. There have been a mix-up of solder paste. We are currently running clean process in one side of board. Unfortunately when PD run the other side process they were able to used a wrong no-clean solder paste.
Electronics Forum | Thu Sep 23 08:47:25 EDT 2021 | majdi4
1)Though in many cases the difference between SAC305 and SAC405 was small,and not always statistically significant, it was observed that SAC405 generally outperformed SAC305 joints. Under 0°C to 100°C thermal cycling,no statistically significant
Electronics Forum | Fri Feb 23 14:50:14 EST 2024 | carl_p
That link doesn't work for me. From the more you explain - it does sound like an issue I've had in the past on a few different builds. In the end we traced it to a fault with the paste (they were having mixing issues in the chemistry) but they as y
Electronics Forum | Fri Oct 06 08:21:26 EDT 2006 | inds
Mario, what happens when there are components on the boards that are not rated to take temperature of 230-240 C Peak for a mixed assembly. I guess there are tons of sn/Pb components that have rated temp of 225-230 C.. So in guess you might want
Electronics Forum | Mon Jan 31 12:24:24 EST 2000 | Dave F
Robert: Several points: 1 Dross is a mixture of various things with no "fixed" composition: � The obvious things are metal oxides mixed with metal and this can vary in color with temperature and composition - remember some intermetallic oxides form
Electronics Forum | Thu Jul 12 18:21:37 EDT 2007 | arburgos
We are considering buying a new stencil washer machine. We stencil print boards with NC solder paste and in the near future Lead free solder paste. I'd like to hear your experience with this equipments and what you recommend.
Electronics Forum | Tue Jan 06 16:31:41 EST 2015 | jacklucas
In switching to lead free processing, we find ourselves having over 400 PCB part numbers with Sn63 HASL finish. And there is no hope of quickly purging inventory and getting our drawings changed to call out a lead free finish. I want to avoid having
Electronics Forum | Fri Feb 23 09:35:36 EST 2024 | emanuel
We have the standard profile as a template made according to the solder paste specs. For some boards we measure the result at 2 points, on the board itself and on top of a sensitive SOT263 module and adjust accordingly. The solder paste is well kept,
Electronics Forum | Tue Jul 19 09:18:14 EDT 2011 | davef
Could this be an opportunity to explore the use of cartridge-type paste dispensers? Or maybe a reason to keep working over the weekend. * Re-Storing & Re-Using “Used” Solder Paste. Though not a recommended practice, used solder paste from the stenci
Electronics Forum | Fri Nov 18 01:50:56 EST 2005 | ajay
in such cases we keep used paste in box & it is on the machine
winsouce.jpg)
.gif)
