Electronics Forum | Tue Aug 27 14:19:25 EDT 2019 | surfacemountprocess
They do perform well and are much easier to maintain than impeller driven pumps as there are no moving parts. The machines with electromagnetic pumps do cost more but the extra investment is worth it. One of the main benefits of the electromagnetic
Electronics Forum | Tue Dec 23 11:55:37 EST 2003 | Marc Simmel
Details, details: 1) The metal shell is part of the component body. The base metal is austenitic stainless steel (304) that has been plated with 90/10 tin-lead over nickel (semi-bright). 2) The entire part (leads and shell) is elevated by the mass o
Electronics Forum | Wed Dec 06 09:09:54 EST 2017 | davef
Suppliers have improved the utility and quality of OSP [organic solderability preservative] solderable surface protection over the years. Be cautious reading too much into older SMTnet [and web in general] conversations about handling OSP. When prop
Electronics Forum | Thu Nov 30 00:41:23 EST 2017 | abhilash4788
Dear All, I have OSP finsh pcb on my production, the pcb thickness is 1.5mm and the product is one sideded pcba. After reflow process, Is there any specific time frame defined for smt completed OSP finish pcba before going for wave soldering proce
Electronics Forum | Thu Oct 14 16:38:29 EDT 2021 | SMTA-64387687
OSP is there to keep the copper from oxidizing. Once you wash the board, the copper is exposed. So, you have to either use it right away, or store it in a non-oxygen environment (vacuum/nitrogen).
Electronics Forum | Tue Mar 09 18:14:07 EST 2004 | davef
We're not current in recommending suppliers, but we have discussed nitrogen storage previously here on SMTnet. Search the Archives to get started.
Electronics Forum | Fri Jan 07 09:56:04 EST 2005 | davef
Electroformed stencil suppliers follow. The describe the stencil production process on their sites. * Aplpha Metals [ http://www.alphametals.com/products/ stencils/pdf/PG_Electroform_Stencils.pdf ] * Chepaume [ http://www.chepaume.com/electroforming
Electronics Forum | Thu Dec 16 11:54:45 EST 1999 | Mike Naddra
At reflow an inert atmosphere is used to mitigate the occurance of oxidation, to me the decision weather to move from an inert atmosphere is based on several things ; PCB surface finish - are you using a HASL finish, OSP or another surface finish and
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