Electronics Forum | Fri Aug 10 17:19:21 EDT 2012 | tuna73
We implemented MSD controls 10 years ago using a software/hardware system developed by Cogiscan. The system tracks all moisture sensitive material utilizing RFID and Barcode scanning to completely eliminate human error. The system gives real time dat
Electronics Forum | Fri Jun 01 23:57:21 EDT 2012 | bwjm
HI Guys, i am facing similar issues with this BT resin material too. PCB specs are 4 layers, Nelco400013, same Tg and Td. My PCB delam after reflow. The PCB has both side mounted with SMDs. Initial mounting on the btm side after reflow, no delam. B
Electronics Forum | Wed Jan 09 14:46:29 EST 2008 | chef
Besides changing fluxes, do you have good knowledge of actual flux volumes? Do you have a micrograms per square value? Pre-heats can affect flux by burning off too soon and also not enough - therefore moisture hits the wave- how's your humidity cont
Electronics Forum | Mon Feb 01 10:06:51 EST 1999 | Chris Fontaine
All of our moisture sensitive components are shipped to us in vacuum sealed, desiccated bags with a moisture indicator. When the parts are removed from the bag (this is done at either SMT setup, or in the stockroom) the indicator is checked. If it
Electronics Forum | Thu Jun 25 14:41:07 EDT 1998 | Earl Moon
| Alright gentlemen and ladies of the forum, I again seek knowlage on what is probably a well known fact. I have spent a good part of the morning with various IPC standards and weighty tomes such as the Electronic Packaging and Interconnection Handb
Electronics Forum | Fri Aug 17 08:37:47 EDT 2001 | jbieber
Gregory, I think that the profile is too radical, i.e. zone 6 to zone 7 temperatures are too far apart. I would guess that the solderjoints have not all reached 183C in zone 6 which is why the uBGA's do not have a symmetrical ball collapse. You may
Electronics Forum | Thu Jun 19 13:21:53 EDT 2003 | kmccarten
I am currently working with Toyo Living, a manufacturer of Desiccant Dry Boxes. These boxes are specifically deisned for the electronics industry offering options of N2 Purge, or ultra-low flow, Out of spec Humidity alarms, Door Alarms, Data logging
Electronics Forum | Mon Apr 26 12:51:45 EDT 1999 | Bob
Steve, Moisture sensitivity needs to be taken seriously. Being in the commercial end of electronics now, I am using many plastic packages. Unfortunately, moisture sensitivity processing is not black and white and it does require procedures and dis
Electronics Forum | Fri Jun 18 10:59:37 EDT 1999 | Scott Cook
| A user of one of our components exceeded the floor life of some plastic BGA components. They did do a pre-bake prior to SMT reflow but only 72 hrs at 40C and not the recommended 12 hours at 125C. I've recommended accoustic microscopy to look for po
Electronics Forum | Tue Jul 31 10:16:59 EDT 2012 | silverbullet
We are in the process of revamping our conformal coating room. Presently, we have a C-740 Nordson Asymtek coating machine that sprays most of our boards with Dow Corning 2577. We are spending a lot of time masking boards and are thinking of upgrading
