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January 2012

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Subject:
From:
Victor Hernandez <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, [log in to unmask]
Date:
Tue, 17 Jan 2012 07:09:12 -0600
Content-Type:
text/plain
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text/plain (130 lines)
Graham,

 Ditto,

Victor,

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Steve Gregory
Sent: Tuesday, January 17, 2012 7:01 AM
To: [log in to unmask]
Subject: Re: [TN] Expired Solder Paste

Hi Graham,

I would be interested in a copy...

Thanks!

Steve Gregory

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Graham Naisbitt
Sent: Tuesday, January 17, 2012 7:04 AM
To: [log in to unmask]
Subject: Re: [TN] Expired Solder Paste

Hi Juliano and fellow Techies,

It might be useful to you to consider using a relatively new Process Control
Standard available from SMART Group (www.smartgroup.org) entitled: Control
of Solder Paste used in Electronic Assembly Process
This was developed from the IPC-J-STD005 solder paste test methods, but
adapted for use by folks using paste as opposed to the manufacturer.

The Scope states:
This Standard is intended to determine the suitability of solder paste prior
to its employment on the production line; reduce process defects and
minimise rework.
The tests are, by necessity, fast and simple to perform; with commercially
available equipment and may be completed in less than 1 hour.
A list of defects, test methods and the time/cost implications are shown 

If anyone would like a copy they could contact SMART Group or let me know
and I can forward a copy. 

Graham Naisbitt
Gen3 Systems Limited
www.gen3systems.com
[log in to unmask]
On 16 Jan 2012, at 13:29, Juliano Pacheco wrote:


> Hi,
> 
> What are the consequences of using expired solder paste?
> How long after the expired date is "acceptable"?
> 
> Thank you.
> 
> Juliano Pacheco
> 
> 
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