Hi Reuven,
Still working on v.09 of the White Paper—you will get it automatically once I am satisfied.
Werner
-----Original Message-----
From: Reuven Rokah <[log in to unmask]>
To: [log in to unmask] <[log in to unmask]>
Sent: Sun, Sep 13, 2009 2:11 am
Subject: RE: [TN] Bare Board Moisture Content Standard
Dear Werner,
Did you update your white paper since I have ordered it?
If yes, can you send it to me?
Thanks
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Best Regards
Reuven ROKAH
Chief of Technologies
Network Solutions Division / Engineering
ECI Telecom LTD.
30 Hasivim St. Petah-Tikva 49517
ISRAEL
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Think green before printing this mail... Thanks
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Werner Engelmaier /*
Sent: Saturday, September 12, 2009 7:38 PM
To: [log in to unmask]
Subject: Re: [TN] Bare Board Moisture Content Standard
Hi Chris,
The allowable moisture content depends primarily on
the temperature your PCB
will reach during the soldering process—the higher T the lower the allowable
moisture content. some material suppliers make recommendations, see e.g. Isola
Technical Belletin, “PCB Packaging for Lead-Free Assembly,” September 2007, 5
pages, available from www.isola-group.com.
Also, I developed a White Paper "Recommendations for PCB FAB Notes and
Specifications in Printed Circuit Board Drawings for SnPb and Lead-Free
Soldering Assemblies, the Qualification of PCB Shops and Activities to Assure
Continued Quality" that among many other things contains an extensive discussion
on PCB moisture content.
Werner
-----Original Message-----
From: Chris Schaefer <[log in to unmask]>
To: [log in to unmask]
Sent: Fri, Sep 11, 2009 4:51 pm
Subject: [TN] Bare Board Moisture Content Standard
Hello fellow techies,
My question today concerns allowable moisture content by percentage and if
there is a standard that applies to the varying materials used to make fabs.
We are in the process of creating a flow down document to our board houses
to ensure boards are stored, packaged and handling appropriately prior to
delivery to us. I have been unable to find a standard that has any information
in regards to this, but have been told there is one. I'm hoping you all couls
shed some light on the subject.
Thanks in advance and have a great weekend.
Ciao!
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