dash 13 is not a slash sheet 25 resin. dash 13 is slash sheet 26 I believe. Tim Reeves -----Original Message----- From: TechNet [mailto:[log in to unmask]]On Behalf Of Eddie Rocha Sent: Wednesday, February 25, 2004 10:50 AM Subject: Re: IPC-4101 Material I've used Nelco's (-13) as an alternate to Getek. Allied Signal's (now Isola) FR408 is another alternative . thanks, On 25 Feb 2004 at 10:41, Marsico, James wrote: Good day... Our designers want to use an FR-4 material which is designated as IPC-4101/25. The /25 material has a permittivity of 4.4, while the other FR-4 materials (/21and /24) are listed as 5.4. I found out that GETEK is classified as /25, and was wondering if this is the only /25 material available. Is there a generic (or product) name for the /25 material? The slash sheets in 4101 have a maximum permittivity at 1 Mhz, do the graphs exist that show the Dk at various frequencies? Jim Marsico Senior Engineer Production Engineering EDO Electronics Systems Group [log in to unmask] <mailto:[log in to unmask]> 631-595-5879 --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e 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- 509-9700 ext.5315 ----------------------------------------------------- -- Thanks, Eddie Rocha (408) 978-8992 x 282 --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e 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 847-509-9700 ext.5315 ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e 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 847-509-9700 ext.5315 -----------------------------------------------------