Electronics Forum | Tue Oct 19 23:17:48 EDT 1999 | Stu Leech
I answered another post regarding the subject of demoisturizing bake-out. Our new process works for taped and reeled devices as well as those in trays. Stu Leech
Electronics Forum | Tue Jul 22 20:47:21 EDT 2008 | davef
Q1. Can I do this myself on site? A1. Sure. Most companies demoisturate their components in-house. Q2. Can we use our Vitronics Soltec XPM820 Reflow Oven? A2. You can. Most of us would be using an oven like that in our product processing. If you look
Electronics Forum | Mon Feb 28 17:16:38 EST 2000 | Stu Leech
We just got a lesson on the effectiveness of heat sealed metalized vapor barrier bags. A customer sent us two bags of 100% saturated PBG components by air freight. This was for a demoisturizing test. When we found the devices 80% dry when they arrive
Electronics Forum | Mon Feb 28 17:16:38 EST 2000 | Stu Leech
We just got a lesson on the effectiveness of heat sealed metalized vapor barrier bags. A customer sent us two bags of 100% saturated PBG components by air freight. This was for a demoisturizing test. When we found the devices 80% dry when they arrive
Electronics Forum | Fri Jan 17 15:47:28 EST 2003 | davef
There is no documentation like you seek. The life of your part in storage is primarily a function of: * Quality of the part fabrication process. * Ingenuity and diligence you apply in protecting the parts from the environment. You need to: * Handle
Electronics Forum | Fri Dec 31 20:04:10 EST 1999 | Stu Leech
At Altos Engineering we do a lot of process testing of our TVP drying systems for demoisturizing. We store test devices in metalized vapor-proof bags. Instead of heat sealing, we use Croc-Clamps to seal the bags. They have been tested for sealing eff
Electronics Forum | Tue Oct 19 22:27:29 EDT 1999 | Stu Leech
We have just completed some studies of with ABPAC, who is a large subcontract assembler of plastic ball grid arrays. BT laminates can pick-up appreciable moisture in just two hours. They are using TVP demoisturizing, our product (I apologize for the
Electronics Forum | Thu Sep 16 21:11:10 EDT 2004 | davef
Left to its own devices the plastic used to seal your parts will take-on moisture in the air. When you heat there parts the water in the part expands and can damage the part, if not properly demoisturized. The instustry standards for controlling su
Electronics Forum | Fri Aug 10 16:22:35 EDT 2007 | htran
Davef, The J Standard-001-DS(Ref. 4.9.3)does required board assembly bake out and the purpose of the bake out is to demoisturize the PWB and to prevent board delamination during reflow like you have mentioned earlier. Thanks for your inputs. I hav
Electronics Forum | Mon Nov 24 07:36:15 EST 2008 | davef
No, but we find discussions about relative humidity fairly short sighted, because relative humidity is such an imperfect measure of the amount of moisure in the air. Dew point is much more appealing. R.H. = (amount of moisture)/(maximum amount that
