Electronics Forum | Tue Oct 19 19:15:23 EDT 1999 | stephenmac
I would like to know how to measure the moisture in pcb's. I have experienced blowholes and am sure it is the board manufacturer. What is the limit and is there any way to correct the problem when moisture rich boards are already in your process. Th
Electronics Forum | Mon Dec 31 09:00:06 EST 2001 | davef
Baking before assembly does nothing good. It: * Increases costs. * Adds steps to the process and makes scheduling more cumbersome. * Increases the amount corrosion on solderable surfaces. We used to bake to remove the moisture from boards that caus
Electronics Forum | Thu Sep 23 10:11:15 EDT 1999 | Earl Moon
| Hi All, | | I'm recently receiving an IC in package for Ic's sensitive to moisture and not in another times, Somebody know how can I know if this Is moisture sensitive or not(which is the rule ?)?. the Ic is a soic14. | | | thanks | | I appreci
Electronics Forum | Mon Dec 28 14:57:07 EST 1998 | Earl Moon
| Looking for additional handling and baking information of moisture sensitive IC'c beyond/or inadditotn to IPC - SM - 786 A. Publications, guidelines, baking experience. | Much depends on your environmental controls and those of your suppliers. PB
Electronics Forum | Tue Oct 19 22:43:31 EDT 1999 | Stu Leech
We are deeply involved with this question because we have developed a much faster way to remove moisture from PCB's. PCB's absorb varying amounts of moisture at differing rates. The rate is influenced by the laminate type board configuration , loca
Electronics Forum | Wed Oct 20 10:49:04 EDT 1999 | Brian
Hi! Stu's method is a half-truth. What it measures is the aggregate of all volatile material with a significant vapour pressure at the baking temperature, not just H2O. Short of very complex methods, it could be complemented by a comparitive measur
Electronics Forum | Mon Jul 10 12:39:07 EDT 2000 | Chris C
Hi Christopher, To my knowledge, heat seal along will not provide you the desire condition. Currently, we're using vacuum sealer to reseal all MSD restock items. If you have variety of package and constantly need to reseal the MSD parts, I'd like to
Electronics Forum | Thu Jun 06 10:08:55 EDT 2013 | grauen06
We keep all moisture sensitive parts in a humidity control enviroment at our main plant, but our return/refurb products building does not have humidity control. My question: Do moisture sensitive ICs that get hand placed by our refurb/return team n
Electronics Forum | Sat Mar 21 09:09:40 EDT 2009 | davef
Your puzzlement about blowholes in PTH solder connections during reflow soldering comes from: * Boards are hydroscopic. So, moisture content of the board is uniform. * Gold plating is uniform. * Nickle plating is uniform. * Copper plating on your PTH
Electronics Forum | Mon May 27 12:24:21 EDT 2002 | arcandspark
Carol, I beleive there is an IPC spec for Moisture control. We see all kinds of problems with boards coming from the vendors. We use to bake all bare fabs upon recieving them. This helped alot but waste time. We now rely on the board vendors to bake
