170-180 is Okay Best Regards Reuven ROKAH e mail: [log in to unmask] Think green before printing this mail... Thanks -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Inge Sent: Thursday, August 14, 2008 9:01 PM To: [log in to unmask] Subject: Re: [TN] TG 130 or Tg 170 for ENIG We have tried superhigh Tg (210 Centigrades) FR4 boards. Promising, but expensive and few makers. Anyone with experience? Example: http://www.parkelectro.com/parkelectro/images/PWB%20Dielectric%20Substrates%20for%20Pb%20Free%20Assembly2.pdf Inge ----- Original Message ----- From: "Douglas O. Pauls" <[log in to unmask]> To: <[log in to unmask]> Sent: Thursday, August 14, 2008 9:23 AM Subject: Re: [TN] TG 130 or Tg 170 for ENIG >I don't know if it is a "standard practice", but I would certainly > recommend it. You need the extra margin that the higher Tg gives. > > Doug Pauls > > > > > Lenny Carter <[log in to unmask]> > Sent by: TechNet <[log in to unmask]> > 08/14/2008 11:19 AM > Please respond to > TechNet E-Mail Forum <[log in to unmask]>; Please respond to > Lenny Carter <[log in to unmask]> > > > To > [log in to unmask] > cc > > Subject > [TN] TG 130 or Tg 170 for ENIG > > > > > > > Hey technetters- We adopted the ENIG finish for our RoHS compliant parts 2 > years ago. We recently had discussions with our primary pcb vendor and > they > recommended we switch to a Tg170 FR4 material for our pcbs instead of our > standard Tg130 we have been using for years. > This recommendation was made because of the higher reflow temperatures > necessary for the lead free process. > > Is this standard practice? we are a little hesitant to make the switch as > it would mean an approximate 5%price increase on all our pcbs. > > Any input is appreciated. > > thanks, Lenny Carter ERG, Inc. www.ergpower.com > > > --------------------------------------------------- > 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 -----------------------------------------------------