Can I assume you are having problems with too much humidity causing damage to components when subjected to reflow temps? I recall there is a joint IPC/JEDEC (at least I think that's who published the document) covering storage of components for SMT. Or it could be an EIA standard. 

Jim McGrath
Strategic Marketing Manager
TE Consumer Devices
Cell: 630-244-3872
Email: [log in to unmask]
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Douglas Pauls
Sent: Wednesday, April 23, 2014 3:16 PM
To: [log in to unmask]
Subject: Re: [TN] Humidity levels within SMT/PCA factories.

I think there is an ESD Association standard that covers it but most control systems have a minimum value of 30%.  When values fall below that, additional ESD measures kick in.  The most common being spray misters to increase relative humidity.

Doug Pauls



From:   Jim West <[log in to unmask]>
To:     <[log in to unmask]>
Date:   04/23/2014 03:03 PM
Subject:        [TN] Humidity levels within SMT/PCA factories.
Sent by:        TechNet <[log in to unmask]>



Hi all,

Is there a standard written that covers required humidity levels within an SMT/PCA plant?

What levels do others maintain in their factories where humidity is an issue?

Thanks,
Jim


______________________________________________________________________
This email has been scanned by the Symantec Email Security.cloud service.
For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________




______________________________________________________________________
This email has been scanned by the Symantec Email Security.cloud service.
For more information please contact helpdesk at x2960 or [log in to unmask] 
______________________________________________________________________

______________________________________________________________________
This email has been scanned by the Symantec Email Security.cloud service.
For more information please contact helpdesk at x2960 or [log in to unmask] 
______________________________________________________________________