Electronics Forum | Tue Mar 15 12:20:47 EST 2005 | Material Man
The use of nitrogen in lead free wave solder operations is primarily used to reduce or even eliminate drossing of the solder, thus improving solder yield. The higher priced lead free solder makeup (Cu, Ag) make this a more economical proces than the
Electronics Forum | Thu Apr 07 14:07:11 EDT 2005 | Tater
Both methods are fine, but you should create or use a spec that fits your process needs. You should also consider if this warp will directly impact the performance of your final product once it's completely built. Then make sure your customer won't
Electronics Forum | Mon Jun 06 09:05:02 EDT 2005 | cmiller
How do apply it in your process? It would seem best to screen the electrically conductive epoxy then dispense the thermally conductive epoxy to bond the part to the heat sink pad. Any help or opinions would be appreciated. I dont think the System Uni
Electronics Forum | Mon Jun 06 10:02:39 EDT 2005 | cmiller
How do apply it in your process? It would seem best to screen the electrically conductive epoxy then dispense the thermally conductive epoxy to bond the part to the heat sink pad. Any help or opinions would be appreciated. I dont think the System Uni
Electronics Forum | Mon May 30 14:03:59 EDT 2005 | MikeaJ
Harry may absolutely be on to something. Although you may have multiple issues, the minute Harry mentioned "transformer", a big bell went off in my head. A retrofit was released a number of years ago to address it. I actually put a few of these in ov
Electronics Forum | Fri Jun 03 10:15:14 EDT 2005 | PWH
We do both our ovens once a week. If something looks out of tolerance (we've developed acceptable tolderances based on many recorded profiles over time and oven mfg. specs.) we wait a couple hours and try again. The recorded data over time is very
Electronics Forum | Fri Jun 03 15:18:04 EDT 2005 | mmjm_1099
Hello, I was wondering about specs on SMT stencil ordering. I am looking to make some sort of template for aperature layout of some parts. I was wondering some issues that you have all came across or made to change to better suit your boards. For ins
Electronics Forum | Thu Jun 23 05:06:07 EDT 2005 | ajaydoshi
Hi does anyone have any good experiences with low > volume, low cost prototpying SMT machines? > > My > experience is mainly with high volume > manufacturing so I've never really looked into > this market & the manufacturers (except Quadra & >
Electronics Forum | Tue Jun 28 10:51:32 EDT 2005 | mattkehoe
Thanks for the replies, - solder paste used ? NC ? other ? Water soluble 63/37 paste - reflow in Air or N2 ? Infrared - temp ramp up before soack (�C/second) ? Will have to check. This profile has been used on numerous gold plated boards in our
Electronics Forum | Fri Jul 15 18:21:55 EDT 2005 | dggjr
We have Kester 256 no-clean spec'd as an alternate paste. I bring some 256 in occasionally to make sure it still works as a backup. The last batch I brought in was bridging like crazy. Scraped it off the stencil, put our regular Alpha back down an
