Jim, It seems there are quite a few fab houses doing the micro-via thing now. Just out of curiosity, are the vias you are specifying finished plated-through hole sizes? These finished hole sizes can be acheived through drilling with .008 to .0135 drill bits. Do you have very thin dielectric requirements? Why are you specifying micro-via technology to build these? Steve U. On Mon, 23 Aug 1999 15:49:41 -0600 Jim Kittel <[log in to unmask]> writes: >Fellow TechNetters, > >We are are moving into the assembly/design of circuit card assemblies >using >micro via technology and I need a lead on some PWB vendors that can >fabricate boards with buried or blind micro vias. These designs will >require vias in the 0.004 to 0.008 inch diameter range with 0.004 inch >trace >widths. I would like to find a supplier that can do the entire >process in >house. The finish will be nickle/immersion gold, typically FR-4 or >polyimide and we are talking small order sizes. > >Any ideas on who to contact? > >Jim Kittel > >############################################################## >TechNet Mail List 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 web site (http://www.ipc.org/html/forum.htm) for >additional >information. >If you need assistance - contact Gayatri Sardeshpande at >[log in to unmask] or >847-509-9700 ext.5365 >############################################################## ############################################################## TechNet Mail List 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 web site (http://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or 847-509-9700 ext.5365 ##############################################################