Electronics Forum | Tue Jun 17 09:06:33 EDT 2008 | ldavis
We've had very few tombstone problems but all were fixed by reducing the apertures of the affected components.
Electronics Forum | Mon Jun 16 23:57:47 EDT 2008 | grantp
Hi, How has it worked for you with small parts such as 0402, and are you using these size parts, and getting any tomb-stoning problems? We used lead paster with our vapor phase, while lead free should have less surface tension, so I have always won
Electronics Forum | Thu Nov 03 10:19:52 EST 2005 | Rob.
Tell me about it, I've set up & run places with placement capacities of 180K & 300K Per hour, and on the other side places with around 2-5KPH (if you ran quick enough between the machines & were nifty with a rubber blade). And I've worked for some o
Electronics Forum | Thu Sep 06 15:57:36 EDT 2007 | grantp
Hi, Vapor phase is an incredibly process, apart from the tombstoning, that we just could never eliminate. So we had to dump it and go with convection. It's a shame, as the solder joints were incredible! Regards, Grant
Electronics Forum | Thu Aug 20 19:07:29 EDT 2009 | smt_guy
reduce the stencil aperture to prevent tombstoning in vapor phase process. from my experience a 6 mil thick must be at least between 20 to 30 % aperture reduction for 0805's and below. cheers!
Electronics Forum | Wed Jun 18 03:51:04 EDT 2008 | bing007
We have evaluated vapour phase in the past and was very impressed on how simple and easy it was to use and control. Gods send when being pushed in an audit because so little can be changed and will work within the chemistry within the unit. I so want
Electronics Forum | Tue Jun 17 12:38:33 EDT 2008 | john_smith
We are also using Vapor phase for our process. We currently have 6 profiles that we have established. 3 for Leaded and 3 for Leadfree. We have set-up our profiles depending on the mass of the board. We do have some tombstoning depending on several va
Electronics Forum | Wed Aug 19 01:00:13 EDT 2009 | sergey2007
Hi! Thanks to everyone! Josh, I don't think it could be something wrong with the mechanics, as just one component was rotated. Anyway, we will check the mechanical parts of the oven. LarryD, thank you for the advice. But what is the physics of the
Electronics Forum | Mon Dec 20 22:41:42 EST 2010 | grantp
Hi, We had it for a while, but had to take it out and replace it with normal convection. I mean the soldering quality is absolutely amazing, and the joints looked perfect, however it was a horror for tomb-stoning. We tried all types of stencil apert
Electronics Forum | Fri Oct 19 01:33:30 EDT 2001 | ianchan
Hi, Encountered this deference to the vapour phase process that was supposedly "phased" out years ago? *pardon the pun* Any comments from folks who have used this proces before? how about folks who are currently using this process? even better, a
