Hi!! I have heard some PCB manufacturerss capable of delivering 100 microns FR4 in a multilayer substrate but I don`t know their source for the prepreg. If you are looking for FR4 without fibre reinforcement, it would be too brittle (like SR) and may not be useful as a substrate/ board. regards. SRINIVASAMURTHY. S > -----Original Message----- > From: <Your Full Name> [SMTP:[log in to unmask]] > Sent: Wednesday, November 01, 2000 1:23 PM > To: [log in to unmask] > Subject: [TN] Thin FR#4 substrate > > Hi: > Is there anyone using very thin(thickness) FR#4 substrate instead of > flex > cicruit ? It may be kind of FR#4 without fibre glass enforcement. Any > information are welcome. > > regards, > > Chan SL > > -------------------------------------------------------------------------- > ------- > 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 > 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 > -------------------------------------------------------------------------- > ------- --------------------------------------------------------------------------------- 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 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 ---------------------------------------------------------------------------------