Electronics Forum | Thu Oct 26 12:27:40 EDT 2000 | Dave Cunningham
What guidelines would you suggest for an assembly house concerning the baking of bare PCB's (assume FR4) and flexes/rigid-flexes before assembly.
Electronics Forum | Sat Jun 19 05:18:24 EDT 2004 | Sanjay Verma
Please bake PCB. And try other paste
Electronics Forum | Thu Dec 04 00:22:11 EST 2008 | maacolomer
Hi Steven, The 24 hrs bake is an overkill according with various J-STDs. Assuming a bake temperature over the 100 Celsius degrees. There are several factors to be considered before deciding the best methodology to wash misprinted board. However,
Electronics Forum | Fri Jul 30 17:22:48 EDT 1999 | Dave F
| | Surface Mount Components like QFP's in Tray usually comes sealed in an anti-static plastic pack. In case the QFP's were removed from the said anti-static bag for more than 2 weeks, do these components needed to be baked for they might produce so
Electronics Forum | Mon Apr 18 20:44:30 EDT 2005 | davef
Charly: Why do you "need to bake the PCb due to moisture issue", if you're not going to use the board? Why bake the board, just to put it back in storage, absorb moisture, and require baking again?
Electronics Forum | Wed Mar 05 11:54:44 EST 2003 | ruggi
Hi JFB, I think this is an unnecessary activity, but it may depend on your RH. We are in the Spokane, WA area, and the RH avg year round is about 25-30%. We have never baked our PCBs in the 9 years I've been here across 800+ varieties, including
Electronics Forum | Fri Feb 28 01:10:32 EST 2003 | MA/NY DDave
Hi I don't know what FR4 you are using, so check it out to make sure 125 isn't too high. I have seen this done occassionally when the PCBs have bad moisture or other problemx where baking helps prior to assembly and solder, yet I haven't seen it do
Electronics Forum | Sun Jan 19 10:45:04 EST 2003 | davef
For laminated FR4 PCB, we bake between 6 and 24 hours at 100�C. [Search for other bake recipes in the fine SMTnet Archives.] Alot of the determination of baking time is a function of: * Amount of moisture absorbed. * Amount of moisture you need to r
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 | Mon Jan 08 03:16:12 EST 2007 | oswald5087
hi' i need advise on immersion gold PCb shelf life. 1) what is the issue shelf life or expire for Immersion gold PCB? 2) How long we can keep the PCB? (with vacuum seal and without vacuum seal) 2) iF PCB expire, can we bake the immersion PCB? what t
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