Electronics Forum | Wed Nov 17 08:27:35 EST 2004 | Steve
No-Clean has less activators, your profiling Does change. Look at the data sheet supplied by the solder manufacturer. Then tweak the profile based on your equipment, board type, size etc. Don't burn off the activators too quickly. Also keep your chem
Electronics Forum | Wed Jul 27 22:14:57 EDT 2005 | Ken
If no-clean...then this seems "relatively" normal. You could try and extend your peak and duration, however, manufacturers are adjusting their chemistry to survive these normal temperatures (up to 260C and 30 seconds within 5C of peak). You will h
Electronics Forum | Thu Apr 27 04:52:06 EDT 2006 | slaine
Ive a 5 zone vip 90, running at temperatures up to 280 degrees, biggest problem we have is with the fan moters siezing up. think we must have changed 8 out of 10 of them ok there 10 years old but it can be a lot of hastle. they sieze absolutly solid.
Electronics Forum | Wed Oct 12 04:29:38 EDT 2005 | rlackey
We've seen issues with Elco's for years on boards with a lot of copper (higher than normal temperatures. We found that the 250C caps failed on the "burn in" tests as they has lost a lot of electrolyte in the reflow process. On some brands you could
Electronics Forum | Thu Nov 10 13:55:25 EST 2005 | 1st Article
Milroy, Another thing to look at is your wave profile. Check speed and pre-heat, if flux gets burned off before reaching the wave then bridging is expected, a common way to check for speed is to time the point of first contact through the sub-merge
Electronics Forum | Fri Dec 02 08:52:05 EST 2005 | pavel_murtishev
Good evening, I�ve just solved very similar soldering issue. In my case the problem was with 0603 chips. Solder joint had same appearance. I suspected that solder do not melted and increased TAL and peak temperature. No result. Next thing I tried to
Electronics Forum | Wed Dec 21 10:09:06 EST 2005 | bobpan
Russ, I agree with you that size doesnt matter. As for service engineers, The way i see it....a polished turd is still a turd. When i see a field service engineer come in to work on equipment and he is dressed up.....9 times out of 10.....he couldnt
Electronics Forum | Wed Dec 21 14:05:04 EST 2005 | rsmith
Loco, I like your textile design talent but if we make those smocks too trendy people will steal them and start wearing them in the malls. There are ESD smocks on the market that have temporary electrical integrity. One such style is called Nylostat.
Electronics Forum | Thu May 11 11:59:15 EDT 2006 | Baer
Harry is correct. Like any process chemical it has to be installed and maintained properly. It is not hard to do but it is important that it be done correctly. After all it is easy to plug in a light but if you do not do it it will not light up. Doe
Electronics Forum | Tue Jan 31 17:14:51 EST 2006 | Chris
I would not go by any general rules at all. Test the product! Thermal cycle it and shock and vib test it. Got burned on a part that had 0.010" dia bumps. Manufacturer stated undefill was not necessary on their part due to bump size. I wanted to u
