Electronics Forum | Mon Aug 12 19:35:42 EDT 2002 | sleech
Been there, ... done that,...got the T-shirt. When with a major IC manufacturer, we tried this. IT DIDN'T WORK! The problem was that most convection ovens leak. We could not achieve a significant N2 atmosphere.Eventually went to vacuum-assisted bak
Electronics Forum | Wed Aug 14 13:54:54 EDT 2002 | DenM
Larry, You can try one of two approaches, a bake above 100C will drive off moisture or use a vacuum bake. The vacuum bake process is slow since there is less/no air to conduct the heat. In the hybrid industry the standard vacuum bake was 16 hours at
Electronics Forum | Wed Aug 07 09:05:11 EDT 2002 | davef
N2 PPM vs %RH? With a firm grasp of the obvious, reflow oven manufacturers rig N2 ovens differently than non-N2 ovens. The N2 displaces O2. Usually N2 oven monitor something or other to give an indication of N2 ppm. %RH really isn't part of the eq
Electronics Forum | Tue Aug 06 08:54:21 EDT 2002 | mike
I have two basic questions: 1. We have a number of small convection ovens and want to modify some of these for baking out parts when needed. We have tried pumping nitrogen into these but I still run between 35 and 50 RH. Has anyone tried converting a
Electronics Forum | Wed Aug 14 16:30:55 EDT 2002 | sleech
Dan: Until I got deep into development of a vacuum assisted moisture removal process, I always thought that the bake process would be saddled by the lack of atmosphere in the chamber. I later learned that the conduction of temperature at reduced atm
Electronics Forum | Wed Jul 14 02:54:12 EDT 2004 | kmccarten
Feel free to also take a look at http://www.drycabinet.com We provide Dry Cabinet and Dry box storage solutions to keep MSD 's below 5% RH. You can also reach us by visiting http://www.totechamerica.com
Electronics Forum | Mon Jun 28 15:03:43 EDT 2004 | jdumont
If you dont mind me asking, what are you guys using to keep your IC's dry??
Electronics Forum | Mon Jun 28 15:11:29 EDT 2004 | davef
McDry seems be a good unit to consider.
Electronics Forum | Fri Jan 18 04:45:32 EST 2002 | wbu
Ianchan, baking as being part of pre-heating is obviously sensless cause the PCB will not maintain any of that heat till soldering. Common reason for prebaking PCB�s is getting the moisture out to prevent outgassing, warpage and maybe other defects.
Electronics Forum | Tue Nov 28 22:34:55 EST 2006 | davef
Almost all boards are hydroscopic. In this, the epoxy holding the board together absorbs moisture. Almost all components are hydroscopic. In this, the epoxy encapsulating the component together absorbs moisture. So, as you heat the board / compon
