I guess you missunderstood the TM-650. I think the difference is between double sided and single sided or even unclad board right after press by laminator. There is no big difference if compare a double sided board with clad and withou copper foil by etching. --- Gerard O'Brien <[log in to unmask]> wrote: > When testing Tg with DSC, the TM-650 test method > calls out for the test to > be run with the copper clad still attached and that > if removed to expect an > 8 to 15 degree reduction in values. For DMA it does > not reference testing > with copper clad or removed. Can anyone give me the > reason why? > > Regards > > Gerard O'Brien > > --------------------------------------------------------------------------------- > Technet Mail List provided as a free service by IPC > using LISTSERV 1.8d > 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 delivery of Technet send the > following message: SET Technet NOMAIL > Search previous postings at: www.ipc.org > On-Line > Resources & Databases > E-mail Archives > Please visit IPC web site > (http://www.ipc.org/html/forum.htm) for additional > information, or contact Keach Sasamori at > [log in to unmask] or 847-509-9700 ext.5315 > --------------------------------------------------------------------------------- __________________________________________________ Terrorist Attacks on U.S. - How can you help? Donate cash, emergency relief information http://dailynews.yahoo.com/fc/US/Emergency_Information/ --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d 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 delivery of Technet send the following message: SET Technet NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------