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


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