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

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