Hi Rene, I see you have received really good answers from ThomasA and UK-BobbyW. The IPC will not be able to standardize land patterns until the industry which will be Lead Free becomes stable on many manufacturing and supplier fronts. That is just the way the IPC works as a broad industry manufacturing collaborative. Mr IPC-Reliability WernerE can correct me. Geez, Where is Mr Reliability. YiEngr, MA/NY DDave -------------------------------------------------------------------------------Leadfee Mail List provided as a 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 Leadfree To temporarily stop delivery of Leadree for vacation breaks send: SET Leadfree NOMAIL Search previous postings 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 847-509-9700 ext.5315 -------------------------------------------------------------------------------