If you were relating gall to Gaul, because I used the French version of façade to reference my transparent building front (glass house); I applaud you. If it was because of Graham's endearing respect for the French in general, that's also accepted. Dewey -----Original Message----- From: [log in to unmask] [mailto:[log in to unmask]] Sent: Wednesday, May 06, 2009 9:46 AM To: TechNet E-Mail Forum; Whittaker, Dewey (EHCOE) Subject: NTC - RE: [TN] What does HIGH GRADE FR-4 mean? You've got a lot of gall to pass on that!!! regards, - Graham -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Whittaker, Dewey (EHCOE) Sent: Wednesday, May 06, 2009 1:44 PM To: [log in to unmask] Subject: Re: [TN] What does HIGH GRADE FR-4 mean? My motives aren't but my façade is, so I'll pass. Dewey -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Graham Naisbitt Sent: Wednesday, May 06, 2009 9:36 AM To: [log in to unmask] Subject: Re: [TN] What does HIGH GRADE FR-4 mean? Stone me! Graham Naisbitt On 6 May 2009, at 14:51, Douglas Pauls wrote: > I would say that Dewey has lost his marble....... > > Doug Pauls > Rockwell Collins > > > > "Whittaker, Dewey (EHCOE)" <[log in to unmask]> > Sent by: TechNet <[log in to unmask]> > 05/06/2009 08:48 AM > Please respond to > TechNet E-Mail Forum <[log in to unmask]>; Please respond to > "Whittaker, Dewey (EHCOE)" <[log in to unmask]> > > > To > [log in to unmask] > cc > > Subject > Re: [TN] What does HIGH GRADE FR-4 mean? > > > > > > > It is. I thought you'd just take the rest for granite. > Dewey > > -----Original Message----- > From: Inge [mailto:[log in to unmask]] > Sent: Tuesday, May 05, 2009 11:24 PM > To: TechNet E-Mail Forum; Whittaker, Dewey (EHCOE) > Subject: Re: [TN] What does HIGH GRADE FR-4 mean? > > only seven shall's...is the stone plate complete? Nothing about > dielectric > > constant which I count as a primary requirement..and copper > adhesion...and...? > Inge > > > ----- Original Message ----- > From: "Whittaker, Dewey (EHCOE)" <[log in to unmask]> > To: <[log in to unmask]> > Sent: Tuesday, May 05, 2009 8:53 PM > Subject: Re: [TN] What does HIGH GRADE FR-4 mean? > > > Since Ken and Doug have attempted to handle the humor, I guess I'll > have > to > fill in the technical details. A list of requirements is as follows: > > > > * The laminate shall have maximum moisture absorption of > 0.5% (The > > actual fabricated bare PB shall have 0.2 % prior to processing). > > * The laminates and bonding materials shall have a > flammability > rating of V-0 minimum. > > * The laminate shall have a glass transition temperature of > 170°C > minimum. > > * The laminate shall have a decomposition temperature of 340°C > minimum. > > * The allowable point to point variation of the laminate Z- > Axis > CTE > shall be no greater than 3.5% (ideally 3.0% or less) when tested > between > 50 > to 260°C. > > * The laminate shall demonstrate meeting the requirements for > thermal resistance to T288 testing for a minimum of 5 minutes. > > * There shall be objective evidence that the laminate > material is > resistant to conductive anodic filament (CAF) growth. > > > > There are other things to consider such as phenolic cure systems and > plating > adhesion, but this is a start. IPC-4101/126 and /129 are good > examples of > high performance FR4s. > > Dewey > > > > -----Original Message----- > From: TechNet [mailto:[log in to unmask]] On Behalf Of Harris Dy > Sent: Tuesday, May 05, 2009 10:23 AM > To: [log in to unmask] > Subject: [TN] What does HIGH GRADE FR-4 mean? > > > > Hi All, > > > > Can anyone define High Grade FR-4? > > > > I think it's a vague requirement that I see on customer drawing. Is > this > something that should be obsolete now because today customer should > really > > provide the properties of the laminate that they want to use... eg > Tg, Td, > > Dk. > > > > Can anyone shed some light? > > > > Thanks, > > Harris > > > > > > > > > > --------------------------------------------------- > > 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 > > ----------------------------------------------------- > > > > > --------------------------------------------------- > 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 > ----------------------------------------------------- > > --------------------------------------------------- > 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 > ----------------------------------------------------- > > > --------------------------------------------------- > 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 > ----------------------------------------------------- --------------------------------------------------- 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 ----------------------------------------------------- --------------------------------------------------- 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 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