Electronics Forum | Thu Apr 05 12:25:17 EDT 2001 | Adam
The Solderballs are on the botton side of the board.The solderballs are concentrated around through hole edge connectors, which have a Tin/lead finish and have lead pitch of 2.5mm, on top of this, random solderballs are occuring around test points. T
Electronics Forum | Mon Jan 04 22:59:23 EST 1999 | Kris Ewen
I'd like to add something about the ECD product. During a past work term (I'm a a co-op student) in an SMA plant, I worked extensively with the Super MOLE Gold in developing the reflow profiles for high-mix, low-volume production. I was 'married' t
Electronics Forum | Sat Oct 21 12:55:14 EDT 2000 | Aaron
It sounds like the temperature of wave is a little lower. It should be 245~250 deg.C for solder Sn63/Pb37.
Electronics Forum | Fri Jul 18 15:38:19 EDT 2003 | B.Saxon
If you are using wave pallets, you could attach copper thieves to the pallet to draw the solder away from the leads.
Electronics Forum | Wed Nov 09 08:32:13 EST 2005 | davef
Mandy, you chicken. You should throw that xray machine in the lake!!! Typical DOE Wave Process would include: Trial Number|| Conveyor Speed (m/min)|| Preheat Temp. (C)|| Soldering Temp. (C)
Electronics Forum | Fri Jun 15 14:05:20 EDT 2001 | CPI
In response No that�s not all you need to think about, but lets look at each and then talk of others. a)The condition of the solderable surface on boards (and components) degrades over time or can be supplied in poor condition (to thin or thick HASL
Electronics Forum | Tue Feb 11 12:02:52 EST 2014 | javierec
Process: Batch Cleaner, @16% concentration. Concentration is checked daily. Cleaning after Wave Process. See attached pictures and comment and what you think causes the solder joint to turn grey. i have read post that say the grey dull looking sol
Electronics Forum | Mon Jun 30 12:41:03 EDT 2008 | realchunks
Hi Dave, I am not a sales person pushing my wares here, just my engineering experiences - so I hope I am not out of line here on this forum anymore. When it comes to selective or spot soldering - it all depends on your board design. Many people al
Electronics Forum | Tue Jan 24 15:16:07 EST 2006 | russ
Are you using an Omega (vibrating laminar flow) or other type of hole fill enhancement? If so, turn it down and this will help with the solder balls coming through the board. Otherwise it seems as though the flux is still to wet/liquidous when it
Electronics Forum | Thu Mar 23 14:17:47 EST 2000 | Finepitch Services
Stuart, My suggestion is a DFM meeting (most of the process people dream about a meeting like this, and luckily, I've been to a few) with: - project manager (if there's one) - customer service rep (annual volume, lot size, product life) - smt proce