Electronics Forum | Thu Dec 12 17:48:21 EST 2019 | davef
You proved that the standard solderability test of components may be effective for assessing aged components. Curious Minds Can you get the authorization to use a more aggressive flux? Will that flux solve the problem? What's it going to cost to qu
Electronics Forum | Tue Dec 17 05:58:36 EST 2019 | robl
We had a customer who used XRF to determine the thickness of the "tinned" layer of components - sort of what is briefly mentioned in Bob Klenke's SMTA paper - http://www.circuitinsight.com/pdf/Solderability_Testing_Protocols_Component_Re-Tinning_Me
Electronics Forum | Fri Dec 27 14:27:40 EST 2019 | slthomas
We switched to a REL0 T3 paste, Amtech LF-4300. It wets the castellations more consistently. I believe that in our case it was more of a plating wetting issue with the parts, but yours sounds more like a pcb finish or thermal issue. That larger pad
Electronics Forum | Wed Jan 15 12:10:22 EST 2020 | emeto
Avillaro, I don't have hands on experience with Vapor Phase equipment, but my guess is that it will work better for thick boards like yours. Trying another chemistry is a logical move. May be it is worth trying the fixture for connector flatness as n
Electronics Forum | Mon Feb 10 10:23:53 EST 2020 | emeto
Solder paste has stencil life time - if you go over it means you should change it. If you print boards in front and keep them for too long before reflow, the flux is still evaporating, so you are not mitigating the risk. Paste also likes room tempera
Electronics Forum | Tue Feb 18 06:14:53 EST 2020 | astarotf
Evtimov SMTA-Alex Hi After the comments, we have analyzed our oven curve according to our sheet of technical data of solder paste. We modify the curve taking the linearity to the maximum with what the file specifies, we attach the profile and the c
Electronics Forum | Fri Feb 21 07:51:23 EST 2020 | griinder
I'm looking to gather some opinions. The C.M. I work for has always used the 3D Stereo Binocular Microscopes. There is a big push towards LCD Camera scopes, that is meeting a lot of resistance from the Solderers and QA. What is the consensus out ther
Electronics Forum | Sat Feb 22 11:37:00 EST 2020 | kylehunter
Hey all, I've made a post in the past about us expanding to a new space, but I wanted to do a new post with specific questions. We currently have a DEK 265, Phillips Opal Xii, and a Heller 1500. Our main reason for expanding is to have a lead-free
Electronics Forum | Mon Feb 24 07:18:07 EST 2020 | kylehunter
> If your ovens are 480V you may be able to convert > them back to 240V by changing out the elements? > There are industrial suppliers for oven elements > out there. sarason Yes that is true, our dealer can do that, but due to cost
Electronics Forum | Mon Feb 24 16:30:07 EST 2020 | stephendo
You might be able to get a step up transformer although I would not recommend that unless it is a good solution for you. What is the input voltage to your facility? It is probably 600V (or something close). If so then you could get a step down transf
.png)
