Hello! I recently joined the Designer's Council, and I wanted to get some input from those of you out there that have been working with IPC specifications. I have been designing boards with through-hole, SMT and mixed technologies for some time, but have never had the IPC specs for designing them. In an effort to "get with the program", I wanted to purchase the specs that would be most beneficial. Can anyone tell me what specifications best cover the design of T/H and SMT technology boards? I also am working on some designs where AC power is present on the boards, and I am concerned about trace separation for a given voltage. I know that there are specifications out there that address this, but I am not sure if they are UL or IPC based. Can anyone point me in the direction of these specs? Thanks in advance for your help! Bryan Randall Accutrace Design, LLC 79 Spruce Lane Williston, VT 05495 Phone/Fax: 802-872-7880 Cell: 802-373-8271 [log in to unmask] www.accutracedesign.com --------------------------------------------------------------------------------- DesignerCouncil 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 DesignerCouncil. To temporarily stop/(restart) delivery of DesignerCouncil send: SET DesignerCouncil NOMAIL/(MAIL) Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail 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 ---------------------------------------------------------------------------------