Electronics Forum | Tue Mar 13 13:13:39 EST 2001 | cebukid
Not to toot my own horn, but ever since I came on board at my company, wave solder defects have gone down by 35%. This was due mainly to a new flux and a process control system that I implemented back in '99. Now, the metric used was DPMO. How do
Electronics Forum | Thu Jan 13 10:30:14 EST 2011 | SheanDalton
My recollection is 6 degrees; but, I suspect the type of wave formation on the backside has an effect. Here's a few notes from an old fishbone chart: Too low angle: excessive solder, icicles, bridging High angle: insufficient solder, voids or outga
Electronics Forum | Fri Jan 31 14:06:09 EST 2003 | MA/NY DDave
Hi Wow, I can't imagine this set up. No wonder some of us were coming from opposing directions. My thoughts would be to buy another pot if needed and not go to N2. Do you have a site that we could look at the dynamics of this N2 air knife/ solder
Electronics Forum | Fri Jan 24 11:45:58 EST 2003 | Randy Villeneuve
I am not familiar with your flux but with no-cleans (which I use) the primary cause of icicling is the amount of flux solids left on the board prior to wave and how long the board is in the wave (2.5 to 3.5 seconds should be OK). The amount of flux s
Electronics Forum | Tue Jan 28 17:10:21 EST 2003 | sajulius
I've seen this problem on more than one wave,What i've done is to run the conveyor a little faster,use a solder temp of 505 degrees F,and most important is to make sure that the solder is flowing over the back. this will keep the thin buildup of dros
Electronics Forum | Thu Jan 23 20:27:54 EST 2003 | joeherz
Hello, We recently installed a new/used UPK 650 fitted with a foam fluxer using an RMA flux chemistry. We have had problems with icicling and bridging from the beginning. The bridging occurs mostly on DIPs and connectors. The icicling is on longer
Electronics Forum | Fri Jan 24 22:50:51 EST 2003 | MA/NY DDave
Hi Again Distance is tough, besides far less exciting.. You got the panther at your breast, screaming!! Somehow you have to make this go the other way. Rather than solder flowing any old place it wants to, when it wants to. Chasing the heat, Chasi
Electronics Forum | Tue Jan 28 16:27:43 EST 2003 | MikeF
I agree with most of the other suggestions here, but 90 C for a topside preheat temp seems low to me. I remember aiming for 98 to 104 C for topside temp just before hitting the solder. Boards that had large ground/power planes or a lot of layers I wo
Electronics Forum | Fri Jan 24 09:26:29 EST 2003 | pjc
I sent you a couple of charts to assist with your troubleshooting. One is the Electrovert Wave Solder Troubleshooting chart and the other is Sandia Labs/Electrovert Optimum Solder Contact Time. Electrovert has a 6 deg. conveyor angle standard on the
Electronics Forum | Mon Dec 11 19:04:06 EST 2023 | SMTA-64387074
Looking for information on lead trimming after wave solder. Does anyone do this through automated equipment? I know ideally parts would be cut to length before insertion and not trimmed after wave solder but sometimes that is cost prohibitive. When n
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