Hi $B!! (BScott $B!* (B I $B!! (Bagree with you. Motoyo Wajima, Airex.Inc.,Japan >Roger, > >"Standard" means different things to different people. IPC does not specify >standard thickness for double sided or multilayer PCB's, that is left up to >the product designer to meet their product fit, form and functions needs. >What is normally considered is material availability as a industry standard. >Certainly 0.062" thickness, in a lot of cases is used for double sided and >boards are designed around that thickness. However some designs and products >can not be that thick and therefore other material needs to be used. > >Scott Westheimer > >Colonial Circuits >----- Original Message ----- >From: "Roger Stoops" <[log in to unmask]> >To: <[log in to unmask]> >Sent: Thursday, February 12, 2004 5:18 PM >Subject: Re: [TN] FR-4 standard thickness > > >Okay, I have a "newbie" type of question: > >What are the "standard" thicknesses for double-sided boards? > >And then the type of questions I ask when it's been a rough week: > >Who determines the standard? Has IPC determined a standard? > >I would like to know so I can tuck it away in my quickly growing files of >pcb flotsam and jetsam... > >Have a good one! (Time to call it a day) > >Roger M. Stoops, CID+ >Trimble Navigation Ltd., Dayton, OH, USA >Ph: +01 937.245.5288 >Fax: +01 937.233.7511 > > >-----Original Message----- >From: TechNet [mailto:[log in to unmask]]On Behalf Of Scott B. Westheimer >Sent: Thursday, February 12, 2004 3:48 PM >To: [log in to unmask] >Subject: Re: [TN] FR-4 standard thickness > > >James, > >This is not a standard thickness if you are taking about a double sided PCB. >However if it is a multilayer and depending on how many layers it has it is >possible to get your required thickness. Most likely if you are talking >double sided than it will either be specially made by a laminate >manufacturer or the PCB fabricator. If the laminator makes it, it might be >expensive depending on the quantity needed.. It might be best to allow the >fabricator to make the material as it should cost less. > >Scott Westheimer > >Colonial Circuits >----- Original Message ----- >From: "Marsico, James" <[log in to unmask]> >To: <[log in to unmask]> >Sent: Thursday, February 12, 2004 3:04 PM >Subject: [TN] FR-4 standard thickness > > >> Good day Technet: >> Our designers are designing a PWB using IPC 4101/24 (FR406) material >that's >> .045" thick. Is this a standard thickness that is readily available? >> >> 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 >> ----------------------------------------------------- >> > >--------------------------------------------------- >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 >----------------------------------------------------- > >--------------------------------------------------- >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 -----------------------------------------------------