Electronics Forum | Thu Nov 08 10:52:22 EST 2012 | Bryan Ng
I am considering using high-temp ball Sn10Pb90 + eutectic solder paste for MLC reflow (no underfill). You can see that there is no Intermetallic bond for the paste and the balls. Under high stress/shock condition, the solder joints develop micro c
Electronics Forum | Fri Apr 26 15:01:09 EDT 2013 | jorge_quijano
Hola Evtimov, I do the same with my Solder Paste Jars, there is a label that is filled by the warehouse guy & by the line operator; time & date the jar arrived to plant, time & date the jar was taken to production line (out of the refrigerator) and t
Electronics Forum | Thu Jun 27 23:49:40 EDT 2013 | cedric77
I had a solder paste SAC305 T4, with flux loading of 11.5%. After retrieivng out from fridge(5deg) after 48hrs, the paste turn dry (like dry mud? and after double checking the flux loading it becomes 12.5%. Has anyone ever experience this or any opi
Electronics Forum | Thu Apr 17 12:12:44 EDT 2014 | sillig
Hello, I was wondering if solder paste is taken out of refrigeration and left to sit at room temperature sealed. How long will it usually last at room temperature on average before going bad? If solder paste goes bad from sitting at room temperatu
Electronics Forum | Wed Feb 11 09:37:31 EST 2015 | emeto
If you are just prototyping, I would probably go with the Jet printer(I think the paste cartridges are very expensive). If you have some casual runs I would use a stencil printer. Actually I would like to have them both - tweak the paste amount with
Electronics Forum | Tue May 05 21:38:40 EDT 2015 | kahrpr
Get an accurate scale. You can rent them if you do not have one or do not want to buy one. Weigh the bare board then paste the board and re-weigh it. Subtract the 2 and you have the weight. solder paste is sold buy weight so then you can calculate th
Electronics Forum | Thu Sep 29 18:57:14 EDT 2016 | vchauhan
Is it ok to re-print the mis-print PCB? Personally I am oppose to re-print the mis-print board. For two reasons. 1. You will end up adding solder paste on the bottom side of the stencil. 2. You may smear solder paste in some area. But I would like to
Electronics Forum | Wed Jan 11 11:52:50 EST 2017 | emeto
First, why do you have paste on the opposite side of the component. I would recommend having it on the same side. Second, how thick is your stencil? Pin in paste requires thickness, to fill the whole barrel. Stencil should be really thick. Try to man
Electronics Forum | Wed Feb 15 01:49:34 EST 2017 | soldertraining
Hi I completely agree with you. Also, the Dry Solder paste can be used in wireless repair operations such as the repair of smart phones, tablets, laptops and other handheld devices. The lead-free solder paste can be squeegeed through the apertures of
Electronics Forum | Thu May 09 08:36:18 EDT 2019 | solderkingchris
Hi, You can work on improving stencil design, having the perfect profile and other process improvements but it may be the paste itself letting you down. We have put a lot of work into developing our solder pastes to significantly reduce voiding. Y
