No one mentioned the other item I had always heard of....sulfur and
phosphorus contamination in cardboard..it might have been from the days
of China Lake and Jim Raby telling us not to degrade our solderability
by using cardboard....but it has been a long time so my memory might not
be all there.

If your assemblies are not going to have to be soldered anymore, it
might not be important.

FOD would be the only other concern that comes to mind.



-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Joyce Koo
Sent: Tuesday, June 05, 2012 1:54 PM
To: [log in to unmask]
Subject: Re: [TN] Electronic assemblies packaging

It depends.  You can get 100% RH in Asia for few days, sufficient to get
cardboard to grow some fungus.  How temporary is your definition at what
condition?  Storage for 6month is definitely not temporary under 100%
RH.  (raining season some places is 3 month).  

Joyce Koo
Materials Researcher - Materials Interconnect Lab Research In Motion
Limited
Office: (519) 888-7465 79945
Mobile: (226) 220-4760

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of JF
Sent: Tuesday, June 05, 2012 4:24 PM
To: [log in to unmask]
Subject: Re: [TN] Electronic assemblies packaging

I missed those kind of replies Dewey!

OK... say we cut corners, what are the effects on sulfur? Our assemblies
are enclosed but, some may have an opening. "Normally" the packaging
should be temporary. But then again sometimes there's nothing more
permanent that something that is temporary. In which case, what is the
"shelf life"? How long before the sulfuring begins?

On 6/5/2012 4:14 PM, mike buetow wrote:
> You such a card, Dewey. You should be dealt with.
>
> Ugh. I'm board with this already.
>
> --- On Tue, 6/5/12, Whittaker, Dewey
(EHCOE)<[log in to unmask]>  wrote:
>
> From: Whittaker, Dewey (EHCOE)<[log in to unmask]>
> Subject: Re: [TN] Electronic assemblies packaging
> To: [log in to unmask]
> Date: Tuesday, June 5, 2012, 4:07 PM
>
> Don't cut corners on the packaging procedures and you won't sulfur the
consequences.
> Dewey
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of JF
> Sent: Tuesday, June 05, 2012 12:48 PM
> To: [log in to unmask]
> Subject: [TN] Electronic assemblies packaging
>
> Hi all,
>
> Back on Technet after a much needed change of life.
>
> I remember reading, somewhere, that it is not advised to ship 
> electronic assemblies in regular cardboard. We are talking electronic 
> boards in an enclosure, not an unprotected PCB.
>
> Can anyone give me precisions on this matter?
>
> Thanks!
>
> JF
>
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