A measle is a measle is a measle; unless it propagates, then its delam. Early testing showed no correlation between measling and CAF failures. Dewey -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Paul Reid Sent: Friday, November 16, 2012 11:46 AM To: [log in to unmask] Subject: Re: [TN] Laminate, Resin recession-dry glass bundle Don't forget Conductive Anodic Filament growth (CAF) with this condition and also crazing. I guess you could have the same problem with measling. Sincerely, Paul Reid Program Coordinator PWB Interconnect Solutions Inc. 235 Stafford Rd., West, Unit 103 Nepean, Ontario Canada, K2H 9C1 613 596 4244 ext. 229 Skype paul_reid_pwb [log in to unmask] -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Bush, Jeffrey D. (US SSA) Sent: November 16, 2012 1:24 PM To: [log in to unmask] Subject: Re: [TN] Laminate, Resin recession-dry glass bundle This is likely poor glass wet-out of the package during lamination - cores or final lam of the board. During the laminate cycle, the resin on the glass fabric enters the liquid state briefly and wets to the glass fibers in the pre-preg, then cures into the C stage of the resin system (this is GEL Time). This allows the resin to become the bonding agent for the package and cure into the required dielectric layer. The fibers become encapsulated in the resin providing good thermal/mechanical strength as intended. When this wet out is impacted by low resin content, gel time, pressure and possibly other rheology issues, the glass is not bonded into the package. This will produce a substrate shows the fibers a lighter than the resins with the weave properties visible. Impacts are electro-mechanical performance deltas in a host of areas, which also vary by extent of the wet out issue. Jeffrey Bush BAE Systems Incorporated IS&R - Space Products and Systems P.O. Box 868, MER24-116A Nashua, NH 03061-0868 Office +1 603.885.8137 Mobile +1 603.318.8056 Fax +1 603.885.5258 -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Victor Hernandez Sent: Friday, November 16, 2012 8:14 AM To: [log in to unmask] Subject: [TN] Laminate, Resin recession-dry glass bundle Fellow TechNetters: Can any of the gurus out there comment on the above terminology and perhaps share a photo. What is the worse than can occur within the laminate with such artifacts. "X" ______________________________________________________________________ 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] ______________________________________________________________________ ______________________________________________________________________ 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] ______________________________________________________________________