Electronics Forum | Mon Mar 05 20:53:32 EST 2001 | davef
When you say all over the board, please give more detail. Where are they located? [All over wave soldered portion, laminate only, solder mask only, solder only, specific components only, etc] When you say white residue, what color are they really?
Electronics Forum | Tue Dec 21 18:09:24 EST 1999 | Brian W.
I have been soldering 0603 components on the bottom side using a glue and wave solder process for a long time. Bridging has not been a common problem. However, it is inherent on the design engineers to follow good manufacturability planning when la
Electronics Forum | Thu Nov 11 11:03:40 EST 1999 | Andy C.
Horace , We had a similar problem last year on an Ultra 2000 . We cured it by draining the pot , removing the wave forming ducts , pumps and nozzles and cleaning . Refill with fresh solder ( one third solder chips , two thirds solder bars - to get t
Electronics Forum | Tue Sep 14 09:13:34 EDT 1999 | Chris McDonald
| | | Has anybody have any experience with Top placement of BGA's. GLue descretes on bottom and then wavesolder.? | | | | | | | | | | | Hi Chris, | | Why don't you process a double side reflow and use selective wave fixture for wave process. T
Electronics Forum | Thu Oct 01 13:31:09 EDT 1998 | FRANK
Assuming that you do not have a solderability problem with the board or part it sounds like you are not pumping the solder up high enough to contact the board plus push into the board by about 1.8mm. Are you using a chip wave in front of the normal
Electronics Forum | Tue Sep 22 09:07:02 EDT 1998 | Steve Gregory
Hi Jacqueline! Do these joints that you're having problems with happen to be on fine pitch solder joints? Are the fillets staying attached to the foot and separating from the pads cleanly? If that is true, are there many vias concentrated aroun
Electronics Forum | Mon Jan 27 12:27:03 EST 2003 | ksfacinelli
We have an assembly that requires a number of high density connectors to be placed after SMD. The process will not allow a normal wave solder setup due to the population of SMD comps. We cannot use a selective solder pallet due to profiles. We are
Electronics Forum | Fri Nov 21 14:11:09 EST 2003 | russ
We have a customer with the same requirements. We use a hot air pen to rework the caps. This is supposed to eliminate the thermal shock that is present when a soldering iron is used. The solder iron tip temp is usually 600-700 degrees and comes int
Electronics Forum | Thu Mar 01 16:43:59 EST 2007 | samir
My own personal "unwritten rule" has always been - no more that 3 times. Anymore than once, I'm not sure what the implications are. If you think about the mechanics of wave solder. It's around 200 Deg. F of preheat, and then immersed in 480 to 500
Electronics Forum | Wed Jul 02 16:13:19 EDT 2008 | ck_the_flip
Wow, I should apply! As others state, wave solder engineers are a dying breed - believe me, I've been doing it for over 15 years. Often times, a very THANKLESS job. People who've never "dealt" with wave think that it's "easy"...c'mon a board trave
