Swen, The best known supplier for DBC would have to be Curamik, there main office is in Germany, and offer a range of DBC products (Tel +49-96 45-92 22 0 for nearest office ) Within the UK I have also had subs from both Advanced Inetreconnection Technologies (AIT) and IXYS (the die supplier) but dont have contacts for either, sorry. One thing I will say is that I have had problems with AlN DBC cracking through the ceramic during thermal testing, Alumina also does this, but the AlN fails far earlier. Good luck Roger ______________________________ Reply Separator _________________________________ Subject: [TN] Alumina & AlN DBC substrates needed! Author: [log in to unmask]@INTERNET at #EMAIL Date: 11/09/98 12:39 Message authorized by: : [log in to unmask]@INTERNET at #EMAIL Dear all, We're going to purchase some Alumina DBC substrates as well as some AlN DBC substrates for our project. Does someone have some information about this? The dimension of these substrates is 2"x 2" x 0.025", both sides coated with ~10 mil copper, Alumina and AlN dielectric layer is around 20 mil. Thanks for your attention. wen ################################################################ 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 ################################################################