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November 1998

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Subject:
From:
Russ Winslow <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Tue, 17 Nov 1998 18:37:12 -0800
Content-Type:
text/plain
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text/plain (52 lines)
Edwin,
The PBGAs are made of organic materials.  Plastic, epoxy, etc. absorb
moisture.  Ceramic, silicon, glass,and metals are inorganic and don't absorb
moisture so they have no problem.  Be carefull because some packages can be
epoxy sealed ceramic which can be very moisture sensitive in the right
situation.  Only hermetic packages can be considered insensitive to moisture
problems (like corrosion or popcorning).   Even flip chip ceramic parts with
organic underfills need to be tested to insure they pose no significant
moisture sensitivities.

Hope this helps

Russ Winslow
Six Sigma


-----Original Message-----
From: Edwin Maximo <[log in to unmask]>
To: [log in to unmask] <[log in to unmask]>
Date: Monday, November 16, 1998 4:45 PM
Subject: [TN] Moisture sensitive


Hi there!!
Just being curious, why do PBGAs are moisture sensitive than CBGA, is
it because of the substrate? Any comments or inputs will be
appreciated.

Regards,
Edwin Maximo
Value Engineer
Electronic Assemblies Inc.
[log in to unmask]
Edwin Maximo
Value Engineer
Electronic Assemblies Inc. Phils.
phone no - (632) 823 7317
fax no   - (632) 759 8629
email    - [log in to unmask]

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