Hi Steve, Yep to all of that. Believe it or not, the actual 3D image for Figure 12-71 has an acceptable solder fillet to the heel of the lead also. Kinda hard to see from the view we put in the spec since it is behind the lead, but if you rotate the page just right (kidding), it's there. Mel Parrish Director of Training Soldering Technology International 102 Tribble Drive Madison, AL 35758 256 705 5530 256 705 5538 Fax [log in to unmask] www.solderingtech.com -----Original Message----- From: TechNet [mailto:[log in to unmask]]On Behalf Of Sauer, Steven T. Sent: Wednesday, May 22, 2002 7:20 AM To: [log in to unmask] Subject: Re: [TN] Side fillet requirements Good Morning Frank, In answering your questions about side fillets, I'll ask how can you require a side fillet when side overhang (< W/4) is acceptable? I don't have a problem with figure 12-71 as it is depicting side joint length ONLY & does NOT depict the other required characteristics (i.e. heel fillet) for an acceptable solder connection. IMHO the problems arise from one's interpretation of "evidence of a properly wetted fillet along full length of lead". Since toe overhang is acceptable (and does not violate minimum electrical spacing) how can the fillet extend the full length of the lead? In summary, for flat ribbons, L and gull wing leads the minimum solder joint requirements are to have a wetted solder fillet to 75% of the lead width, 75% of the lead length and a heel fillet above the lead thickness. Every now and then I wish that common sense would prevail but that is too uncommon! Steve Sauer Mfg Engineer Northrop Grumman, Xetron -----Original Message----- From: Frank Kimmey [mailto:[log in to unmask]] Sent: Tuesday, May 21, 2002 11:26 AM To: [log in to unmask] Subject: Re: [TN] Side fillet requirements Hey Steve, If you are watching, what is your take on side fillets? How do you interpret IPC-610 figure 12-71? ---------------------------------------------------------------------------- ----- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d 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 delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL 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/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------- ----- --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d 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 delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL 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/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------