Electronics Forum | Thu Jul 03 10:24:54 EDT 2008 | grayman
Hello WaveMaster Larry, I think you are very well knowledgeable in wave machine or process. However, I think the reason why your former company won�t listen to you is because you also never listen to your people. I think you overlooked the saying �N
Electronics Forum | Fri Feb 11 00:22:05 EST 2005 | Grant
Hi, That's what I am thinking, and we might have a dirty stencils and cannot see the problem. We are going to get a magnifier, and check it out. I did not think the stencil could bur, but I didn't want to shoot the guys down when they had an idea on
Electronics Forum | Sun Mar 28 22:17:36 EST 2004 | Grant Petty
Hi, I would also be interested in this thread, but our problem has a different twist to it. We have good results from our reflow with Koki no clean paste, however when we pass the boards through the wave solder machine, the flux in that leaves a fog
Electronics Forum | Mon Mar 29 07:21:51 EST 2004 | jdumont
We are also having the same problem here. I was told earlier that it could be a problem with the solder mask during the raw board manufacturing level but then I noticed that the problem was only surfacing on boards that went through the wave. As far
Electronics Forum | Mon May 22 07:01:16 EDT 2006 | Rob
Hi Grant, I've seen a couple of good fluxes on lead free - WF-7742 from Indium & JS-EU-01 from Koki. I'm sure everyone else has a good one too - just make sure it is one formulated for the elevated temperatures involved. Cheers, Rob
Electronics Forum | Wed Jul 19 10:57:25 EDT 2006 | Rob
Depends on a number of things - such as type of oven, type of components, if you are washing the boards or not, etc. Assuming nothing special, no clean, I would try the following (in that order): Koki: S3X58-M406L Almit: LFM-48 Indium: 5.1 Cheers,
Electronics Forum | Fri Aug 24 01:25:58 EDT 2018 | cupet
Hi everybody, please advise in case of soldering problems after the reflow soldering. The problem occurs randomly at different locations on different PCB's (not the complete surface of the board). These places are very difficult for rework. Could you
Electronics Forum | Sat Jun 12 00:34:00 EDT 2004 | kanwal324
Hi ! The main problem being faced currently is formation of solder balls - to be precise, these are micro solder beads generally found attached with bodies of SOTs, Chip Caps, Chip Resistors, between pins of SOICs (50 mil) - lying on PCB surface,
Electronics Forum | Wed Feb 09 21:41:49 EST 2005 | Grant
Hi, We have been running the same stencils for about a year, 5 thou thick, 1-mm pitch BGA's and every-things been ok, but then suddenly over the last week, 2 different products have had paste release issues with the BGA. It's odd because nothings c
Electronics Forum | Fri May 12 11:40:25 EDT 2006 | solderiron
If you can change to SN100C do it. The nickel prevents the high tin content from eating away at the metals on the tips. Similar to what the Lead did in 63/37 alloys. This Koki crap is just that, crap. 99% tin??? Thats what is causing the problem peop
