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 | 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 11:55:31 EDT 2002 | ksfacinelli
One thing we did for our oven is hook it up to the compressed air system in the factory and bled in a small volume of air to create a positive pressure in the oven. The air is clean (non-oiled) and comes off the dryer. We can attain 5% RH. Remembe
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 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 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 | Fri Sep 25 11:07:45 EDT 1998 | Chris Fontaine
We use dry boxes manufactured by DMS Clean Room Products in Lawrence, MA. The phone number on the tag is (508)683-2325, but I think their area code changed to either 978 or 781 recently. We flow dry nitrogen through the box in order to ensure that
Electronics Forum | Mon Jul 29 11:28:09 EDT 2002 | yngwie
Is there a difference between the Nitrogen cabinet vs Dry cabinet ? How does this helps in creating safe environment for MSD storage. I felt puzzled when my customer rejected me coz' I'm using the Nitrogen cabinet instead of dry cabinet. Except for t
Electronics Forum | Thu Jun 27 23:49:40 EDT 2013 | cedric77
I had a solder paste SAC305 T4, with flux loading of 11.5%. After retrieivng out from fridge(5deg) after 48hrs, the paste turn dry (like dry mud? and after double checking the flux loading it becomes 12.5%. Has anyone ever experience this or any opi
Electronics Forum | Mon Jul 29 18:55:34 EDT 2002 | davef
Good question. What did your customer say?
