Hello Paul, Not IPC-A-600. Sometimes people call that up as if it is a procurement spec, but it is not. (the 'scope' and 'purpose' paragraphs of this document explains this better, if you can get a look at a copy.) A typical note that I use is as follows; "Fabricate in accordance with IPC-6011/6012 class 2 using IPC-A-600 for visual evaluations and interpretations." (6012 is for rigid boards, 6013 for flex, etc..) I still specify board profiling and hole position tolerances by geometric dimensioning and tolerancing methods however. Cu thickness, board finish (HASL, Ni/Au etc.), soldermask type, etc., I call up in a table. I hope this is of some help. regards, Phil. At 14:28 13/09/00 -0400, you wrote: >I am trying to update and standardize the notes that appear on our printed >circuit board fabrication (drill drawing) drawing. The current drawing has >over 20 notes detailing things like hole registration electroplating >thickness, wrap and twist ECT. I would like to reference one specification >that covers all aspects of the board fabrication and eliminate all the >specific notes. > >Is there and industry standard on what needs to be specifically called out >on the fabrication drawing and what is the best specification to reference >(IPC-A-600?) for fabricating 4 layer commercial grade surface mount PCB's. > >############################################################## >TechNet Mail List provided as a free service by IPC using LISTSERV 1.8d >############################################################## >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 Keach Sasamori at [log in to unmask] or >847-509-9700 ext.5315 >############################################################## Phil Dutton C.I.D. Senior CAD Technician IPC Certified Interconnect Designer Tenix Defence Systems Pty Ltd Systems Division - Adelaide Second Avenue, Technology Park, Mawson Lakes. SOUTH AUSTRALIA 5095 ================================ Phone: (08) 8300 4400 (reception) Fax: (08) 8349 7420 email: [log in to unmask] Internet Page: http://www.tenix.com ================================ ############################################################## TechNet Mail List provided as a free service by IPC using LISTSERV 1.8d ############################################################## 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 Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ##############################################################