I would contact Analog Devices and request a recommended footprint. Even if they don't already have one, most vendors will draw one up for you. Sincerely, ----------------------------------- Cheryl Johnson, C.I.D.+ Manager ExcelStor US Office, Engineering Services Email: [log in to unmask] Tel: (303) 684-7291 Fax: (303) 684-7268 Mobile: (303) 809-5815 ----------------------------------- -----Original Message----- From: TechNet [mailto:[log in to unmask]]On Behalf Of Brooks,Bill Sent: Thursday, December 01, 2005 1:52 PM To: [log in to unmask] Subject: [TN] 56 pin LFCSP footprint I have an Analog Devices part, 56-lead Lead Frame Chip Scale Package LFCSP with an 8X8mm body CP-56, supposed to be compliant with JEDEC MO-220-VLLD-2. Having a tough time locating a recommended footprint for this one... Any help? Also any issues with mounting? Since this is a direct to board soldered device, it may be subject to CTE mismatches and the like... anyone have experience with any soldering or reliability issues with assembling this part to a fiberglass/epoxy board? Here's a link to the part description http://www.analog.com/UploadedFiles/Packages/352655155839944545242119821CP_5 6.pdf <http://www.analog.com/UploadedFiles/Packages/352655155839944545242119821CP_ 56.pdf> Best regards, Bill Brooks --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e 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 1.8e 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 -----------------------------------------------------