We have been using IPC-SM-782 specs for years and have no problems. We request that are customers use the IPC-SM-782 specs when designing there PCBS. Some questions have come up in regards to the IPC-7351 specs, which some of our customers are using for there designs. We typically review the chip components on all of the boards we manufacture, in doing so I came across an issue where the chip components specs have changed between the IPC-782 and IPC-7351. My questions are: 1). Have the IPC-7351 specs replaced the IPC-SM-782 specs? 2). Which spec should we be designing to? 3). Why have the specs changed? 4). Are the IPC-7351 Specs incorrect? Rich Schutz CAD Engineer Phone: 440-358-5217 Fax: 440-358-5201 Apsco, Inc 3700 Lane Road Perry, Ohio 44081 --------------------------------------------------------------------------------- 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 ---------------------------------------------------------------------------------