Electronics Forum | Thu Jul 24 16:57:57 EDT 2008 | arminski
Hi Guys, I was asked by our QA Supervisor on how to scrap electronics boards. We have Populated PCB's that are already scrapped and would like to permanently mark them that they are Scrapped... Is there any recommended method of marking scrap PCB's
Electronics Forum | Wed May 15 16:18:58 EDT 2019 | stephendo
Look up the glass transition temperature (Tg) for the PCB material. If you get the PCB above this temperature it will become quite soft. If it is a populated board remember to take any moisture sensitive devices on it into consideration.
Electronics Forum | Thu Aug 09 09:05:09 EDT 2007 | davef
There are no requirements acceptance criteria for baking of board assemblies. What are your customer requirements? The common reasons people choose to bake PCB are to prevent: * Delamination of multilayer boards * Measles, particularly on double si
Electronics Forum | Mon Aug 13 18:16:31 EDT 2001 | fmonette
Be very careful how you perform the removal process if you want to re-use BGA/CSP devices. As you are aware, the majority of these components are classified as moisture-sensitive by the manufacturer. This means that if they absorb too much moisture
Electronics Forum | Fri May 21 15:45:29 EDT 2010 | pforister
iv40, Thanks. The PCB that we are populating the BGA hybrid onto does not have holes in the vias. I think the manufacturer indicated that on their hybrid it has holes in pads. This hybrid is a PCB assembly with BGAs and other components populated
Electronics Forum | Thu Feb 12 17:21:07 EST 1998 | Justin Medernach
| I would appreciate any information concerning the wash and bake of blank Printed Circuit Boards | before assembly. | + Is it necessary to wash and bake PCB�s before assembly? | + If any, what is the reason for wash and bake of PCB�s? | + If any, wh
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 | Wed Mar 05 10:59:04 EST 2003 | jfb2003
Currently, my company's applies a PCB bake (5 hours @ 125C) for all SMT PCB's prior to surface mount assembly. Many of us believe this is a non-value added activity, and have concluded it can be eliminated. With today's PCB process controls coupled
Electronics Forum | Tue Dec 09 10:04:36 EST 2008 | lazzara55
SMT-ypw: Does PWB supplier start to implement PWB drying packaging? B3: YES! The fabrication of the PCB involves a series of wet processing that requires counter-measures to remove moisure. While some of the PCB processes also include bake cycles th
Electronics Forum | Fri Jan 29 08:11:06 EST 2010 | vetteboy86
My company has an oppurtunity at an account, but it would require us to populate flexible PCB's. This is something we do not have any expereince in. Are there any good sources I can reference to learn about this process?
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