Electronics Forum | Wed May 28 05:31:17 EDT 2003 | dougie
Hi, Can someone please give me an IPC standard number or similar for decal design when wave soldering SMT components on the underside of a board. Hopefully a document exists detailing design rules, the components ideal attitude to the wave, suitabil
Electronics Forum | Sat Dec 06 09:38:39 EST 2008 | eksoftware2
We are going to convert a Leaded Wave machine (EMS Stallion) to Lead Free. Can we just empty the pot of leaded solder, run it with pure tin for a bit and then put in SN100 bar? What's the score with SN100? Oh and does anyone have any paperwork for
Electronics Forum | Wed May 19 15:42:46 EDT 2010 | davef
Hear ya. Mostly, we production people. So, we shy away from home brew soldering techniques, unless we get ourselves in a mess. That being said, there's a fair amount of stuff on the web about home brew BGA and fine pitch QFP soldering. Here's an
Electronics Forum | Thu Jun 07 05:11:42 EDT 2012 | cp38260
Hi, I have pcbs (Duroid/RT 5880) with raw copper, soldered in vapour-phase chamber at 230 degrees Celsius. During soldering, copper gets tarnished. Cleaning with Vigon A250 removes the tarnished layer. Indeed, in the VigonA250 techn. datasheet it is
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 | Sun Apr 04 11:17:09 EDT 2004 | wsanita
I feel the solder connections were fine. The anchor pads for this device on the board are covered by solder mask. So the leads of the connector take all the stress. The component was broken off and under a scope you can see the plating of each lead
Electronics Forum | Tue Mar 03 09:54:11 EST 2009 | dwelch123
If your using regular 63/37 Sn/Pb solder there are alot of other metals such as Antimony,Nickel,Iron,Cadmium,Aluminum,Copper,Gold,Bismuth,to name a few. But you need a certain amount of these metals for proper solder composition. Regarding the Antimo
Electronics Forum | Thu Aug 11 21:43:19 EDT 2005 | Ken
Those temp stickers are useless unless you can stick them into the copper barrel. They can only determine "skin" temperature which has nothing to do with what is happening in the barrels. Your solder is filling the barrel then going cold. I'll gua
Electronics Forum | Fri Mar 01 08:35:27 EST 2002 | caldon
I am on board with Dave F.(like I usually am). I can not imagine what IPC specs the auditor is speaking about. The Stencil Design criteria, 610, and 001 do not fit the type of solder deposition you speak of (nor I think they should). The machine para
Electronics Forum | Mon Nov 25 16:12:52 EST 2002 | russ
there is a good article by AIM solder regarding tin. In a nut shell, if you do not apply flux or heat to tin finish you will never degrade it! I agree with the others that you need to check the thickness of the pure tin layer. We have forbidden ti