Yes it will happen over time and also quickly when exposed to thermal
excursions above the Tg of the base material.
Jeffrey Bush
Director, Quality Assurance and Technical Support
76 Technology Drive - POB 1890
Brattleboro, Vermont 05302-1890
Tel. 802.257.4571.21 Fax. 802.257.0011
[log in to unmask]http://www.vtcircuits.com
-----Original Message-----
From: Victor G. Hernandez [mailto:[log in to unmask]]
Sent: Wednesday, May 05, 2004 1:09 PM
To: [log in to unmask]
Subject: [TN] Raw Card warpage
Fellow TechNetters,
At a PWB factory setting is a final baking process permissible to
correct any warpage prior to customer shipment. Once the sealed bag is
open and product not used for an extended period of time will the
warpage return.
Victor G. Hernandez
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