Moisture absorption wt % Most of the data is from Electronic pkgg materials and their properties by Pecht et al. Acrylic 6 Epoxy 4 Polyimide/polyamide 3 Kevlar-49 0.5-2, 1.1 Polyester <0.8, 2PPA 1.8 Polyvinyl Chloride <0.5 Polycarbonate <0.35 BCB 0.25 Polysulfone <0.22 FR4 0.1 Parylene <0.1 Fluoropolymers 0.1 Cyanate ester 0.08 BT 0.05 Polyvinyl fluoride <0.05 LCP 0.02, 0.04 TFE/FEP/polyethylene <0.01 Polypropylene <0.005 -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Dan Skweres Sent: Monday, July 26, 2010 2:25 PM To: [log in to unmask] Subject: Re: [TN] Non-Hygroscopic" flex circuit material Ken, A material that doesn't absorb moisture from the environment. Kapton is out. :) Dan S. ----- Original Message ----- From: "Kenneth Wood" <[log in to unmask]> To: <[log in to unmask]> Sent: Monday, July 26, 2010 3:01 PM Subject: [TN] Non-Hygroscopic" flex circuit material Hi all. What would you consider a "Non-Hygroscopic" flex circuit material to be? Thanks Ken _____________________________________ Kenneth J. Wood Saturn PCB Design, Inc. www.saturnpcb.com ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ----------------------------------------------------- ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ----------------------------------------------------- ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------