What are the most popular panel sizes for reputable PCB fabricators in Asia that would do high volume 4 layer boards? The two I come across the most in US PCB shops is 18 x 24 and 21 x 24 with 18 x 24 appearing to be most popular. I'm trying to come up with an array size with a maximum number of circuits that will give us the best utilization of panel area. I'm assuming .75" for borders and .100" between rectangular arrays. My goal is to end up with something that works with many suppliers not just one. Jim Verrette Electrical Engineer --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e 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 or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------