Vivek, I am attaching a dxf of the footprint we use for our 28 pin mlf package. This has worked quite well for us. Notice 4 separate paste mask and solder mask areas on the die pad. The pads are also oversized to extend outside the package which will make it much easier for visual inspection. Hope this helps. Gary -----Original Message----- From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On Behalf Of Vivek Chandra Sent: Thursday, December 08, 2005 7:07 AM To: si-list@xxxxxxxxxxxxx Subject: [SI-LIST] MLF packages Hello , I'm facing a lot of problem debugging an MLF-32 or ML-28 package for high speed board design. Most of the time when i finish my debugging i end up with a conclusion that the soldering of the package pins are not proper and hence the problem. Does anyone out there know if there is any confirmed and guaranteed method of soldering these type of packages? Also to ease out my debugging time would there be any methods for design for testability in this type of packages, because sometimes there is a rare possibility that the IC pin might not be getting any lead or contact with the pad. Thanks Vivek Chandra ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List FAQ wiki page is located at: http://si-list.org/wiki/wiki.pl?Si-List_FAQ List technical documents are available at: http://www.si-list.org List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu -- Binary/unsupported file stripped by Ecartis -- -- Type: application/octet-stream -- File: mlf.dxf ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List FAQ wiki page is located at: http://si-list.org/wiki/wiki.pl?Si-List_FAQ List technical documents are available at: http://www.si-list.org List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu