Thank you this sounds interesting. Another option to investigate. Thanks "Bill Kunkle" <[log in to unmask]> 07/03/2007 11:12 AM Please respond to <[log in to unmask]> To "TechNet E-Mail Forum" <[log in to unmask]>, "Karen Ebner" <[log in to unmask]> cc Subject RE: [TN] When to epoxy heavy components Karen, We have had good success modifying ground plane stencil opening design on castellated lead devices, to minimize movement during reflow. Symmetrically dividing up the large opening into smaller "window panes" allows outgassing thru the streets and promotes a centering effect. Bill Kunkle MET Assocs -----Original Message----- From: TechNet [mailto:[log in to unmask]]On Behalf Of Karen Ebner Sent: Tuesday, July 03, 2007 10:57 AM To: [log in to unmask] Subject: Re: [TN] When to epoxy heavy components Hi Bill I have a LLCC castellated unit. As mentioned when it was hand placed I had no issues now that it is SMT placed it moves during reflow. Per your questions before our board is FR 4 and Rogers material. The ground plane solder is to minimize noise on our device is to eliminate noise. Please call me if you have a moment. If you would also please elaborate more on the statement below would be great. Any component which exceeds 7 grams in weight for every lead of the device Thank you --------------------------------------------------- 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 ----------------------------------------------------- --------------------------------------------------- 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 -----------------------------------------------------