Ken - IPC-D-356 is a data transfer language developed by the IPC to replace Gerber. It is a far more intelligent form of physical definition for PCB/PWB. The only segment of the language that seems to have developed any market support is the physical netlist that includes x, y and top, bottom connectivity information for electrical test equipment. Some CAD systems are capable of generating the IPC-D-356 netlist, and most fabricators have a CAM system that can generate this data from the Gerber files. Jeffrey A. McGlaughlin, C.I.D. Sr. PCB Designer Battelle Memorial Institute Columbus Ohio [log in to unmask] -----Original Message----- From: Ken Patel [mailto:[log in to unmask]] Sent: Monday, August 06, 2001 5:38 PM To: [log in to unmask] Subject: [TN] IPC-D-356 Designer, We normally put as fab note that "Use IPC-D-356 Netlist to Verify the board before fabrication." So, I have a question... Is IPC-D-356 is a CAD (like Allegro/PADS) output file or something else? re, Ken Patel ---------------------------------------------------------------------------- ----- 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 To temporarily halt delivery of Technet send the following message: SET Technet NOMAIL 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 To temporarily halt delivery of Technet send the following message: SET Technet NOMAIL 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 ---------------------------------------------------------------------------------