Good morning Tan, I ran into the same problem a while back but found an excellent source of process info on the component manufacturer's website. Check out Linear Technology's Application Note 100, "Recommended Land Pattern Design, Assembly and Rework Guidelines For DC/DC uModule in LNA Package" document. It is the best source of LNA type process and accept-reject info that I have found readily available. Sorry but I do not have a link to their website. Good luck Best Regards, -Joe "This e-mail and any attachments are solely for the use of the addressee and may contain L-3 proprietary information that may also be defined as U.S. Government export controlled technical data. If you are an unintended recipient of this e-mail, use, disclosure or distribution of its content is prohibited. Please notify the sender by return e-mail and immediately delete this message." From: TechNet [mailto:[log in to unmask]] On Behalf Of Tan Geok Ang Sent: Friday, March 20, 2009 4:00 AM To: [log in to unmask] Subject: [TN] LGA acceptance Hi All, base on IPC-A-610D, there is no explicit requirement for LGA, all it says about Surface Mount Area Array is "for devices with solder balls that collapse during reflow". Is there any IPC standard/specification define the void on LGA? Thank you all and have a nice day! --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 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 ----------------------------------------------------- -----Original Message----- --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 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 -----------------------------------------------------