I believe the material they are specifying is Taconic's TLC-32-0310-CH/CH. It is a PTFE/Glass material identified by the manufacturer as a low cost, low dissipation, and tightly controlled dielectric. Try contacting : Bruce Kline Tel: 507-454-0097 Fax: 507-454-0098 e-mail: [log in to unmask] <mailto:[log in to unmask]> for more information. Jeffrey A. McGlaughlin PCB Designer Battelle Memorial Institute Columbus Ohio [log in to unmask] -----Original Message----- From: Neil Atkinson [SMTP:[log in to unmask]] Sent: Friday, 14 May, 1999 07:17 To: [log in to unmask] Subject: [TN] What the hell is this stuff?? We've just received a drawing that quotes a spec for laminate which no one seems to recognise, can anyone tell me what it is. The material is quoted as: TLC TAC-LAM (32-0310-CH/CH) SUBSTRATE 31 THOU THICK. DIELECTRIC CONSTANT 3.2 1/2 OZ ELECTRO-DEPOSITED COPPER BOTH SIDES. Thanks, Neil ################################################################ TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c ################################################################ To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TechNet <your full name> To unsubscribe: SIGNOFF TechNet ################################################################ Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################ ################################################################ TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c ################################################################ To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TechNet <your full name> To unsubscribe: SIGNOFF TechNet ################################################################ Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################