Electronics Forum | Sat Mar 14 15:48:40 EDT 2015 | horchak
The white haze is definitely an indication of moisture being trapped in uncured or improperly applied solder mask. You can verify this by heating up the board using a heat gun on an area of the board with the white haze, and if it clears up that is t
Electronics Forum | Wed Apr 22 05:33:06 EDT 2015 | mbb
We'have been working on an issue regarding aluminium capacitor placement in PCB. In fact, we have twisted (shifted) capacitors. Through root causes analysis, we confirmed that this phenomenon is happening during reflow process (no issue on placement
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 May 14 08:17:00 EDT 2015 | emeto
I am pretty sure that will vary on the paste manufacturer. Using different amount and composition of flux will give you some different viscosity. I evaluated different solder paste brands before and I can tell you that some of them are very runny com
Electronics Forum | Fri Jun 26 04:26:11 EDT 2015 | grahamcooper22
In the EU these companies have great equipment and experience with laser soldering systems...you have to make sure you use the correct wire / paste....Almit is the best. http://www.wolf-produktionssysteme.de/en/ http://www.mtaautomation.com/ Maybe c
Electronics Forum | Thu Jun 25 09:52:06 EDT 2015 | byviko
Hello, we will buy new wave soldering machine . Trying to decide between two model; Soltec Delta-x and ERSA Powerflow N2. Could you help us , which one is better? most of pcb low volume, others high volume. At first low batch production will be done
Electronics Forum | Fri Sep 04 04:39:08 EDT 2015 | grahamcooper22
Maybe look at reducing the time above liquidus to @ 60 seconds. HF materials tend to want tighter reflow profiles...halogen activators are great at higher temps and longer reflow profiles..but HF prefer shorter profiles. The HF pictures look like the
Electronics Forum | Tue Sep 29 11:37:52 EDT 2015 | robl
Hi Marlyn, We use durastone pallets over a wave - so areas machined out so the solder can get to the pins but not the SMT. You can also get fancy selective solder machines, but I'm guessing that as you're asking you haven't got one. Hope that help
Electronics Forum | Tue Dec 15 10:16:55 EST 2015 | mbb
I had a problem with PCB pads: soldering process couldn't be performed because soldering pads of component in the PCB are oxydized. Is there any solutions to eliminate the corrosion on the pads in order to avoid there scrap because we 're talking abo
Electronics Forum | Tue Dec 15 15:21:17 EST 2015 | davef
Peculiar that ENIG boards are corroded, not that it can't happen. * J-STD-002, Solderability Tests for Component Leads, Terminations, Lugs, Terminals and Wires * J-STD-003, Solderability Tests for Printed Boards The first person I'd talk with is my
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