I hope this doesn't foil Dewey's attempt at humor, he can really advance in epée-ic proportions if allowed. Scott Decker AKA: PadMasterson Hypercom CAD Ph:602-504-5344 -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Stadem, Richard D. Sent: Friday, May 11, 2007 2:08 PM To: [log in to unmask] Subject: Re: [TN] RF fences, oldering He tried to steal some mustard in France..... -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Douglas O. Pauls Sent: Friday, May 11, 2007 3:49 PM To: [log in to unmask] Subject: Re: [TN] RF fences, oldering Certainly learned your lessons better than Dewey. The last time he tried to fence something, he got arrested.... or so I heard...... Doug Pauls "Whittaker, Dewey (EHCOE)" <[log in to unmask]> Sent by: TechNet <[log in to unmask]> 05/11/2007 03:33 PM Please respond to TechNet E-Mail Forum <[log in to unmask]>; Please respond to "Whittaker, Dewey (EHCOE)" <[log in to unmask]> To [log in to unmask] cc Subject Re: [TN] RF fences, oldering There's no foiling you. You have learned your fencing lessons well. All points well taken. Dewey -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Stadem, Richard D. Sent: Friday, May 11, 2007 1:18 PM To: [log in to unmask] Subject: Re: [TN] RF fences, oldering You can probably use tin-plated steel for the fence, but you may not want to. The tin can certainly be plated directly to the steel, but it would have to be of such thickness that there would be no risk of complete dissolution into the solder, else you have nothing to solder to. I am not sure if this is practical or possible. I am assuming you want a wet-joint connection (fully-soldered) along the ground plane on the board, not a mechanical clip or snap-and-twist. Secondly, Kester recommends against using tin-plated steel or brass for shielding fences. Tin-plated steel is plated at the mill and then after the fences are cut out you have a lot of exposed edges that corrode quickly. You need slightly higher temperatures to solder to tin-plated steel, and when you already have a high-mass steel fence the soldering becomes so difficult that after repeated attempts there is no more tin, and guess what happens then? I would use a .16 micron nickel barrier covered with Sn97.6Cu2.4 if I had to use steel fences. I personally prefer nickel-plated brass. Have the fences cut first and then nickel plated to cover all exposed basis metal. -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Tempea, Ioan Sent: Friday, May 11, 2007 12:02 PM To: [log in to unmask] Subject: [TN] RF fences, oldering Hi everybody, since I had no answer to my question regarding the required thickness of the Cu layer on top of a steel fence, I try to reformulate. Can a fence be Sn plated steel only, with no Cu or Ni in between? Would this solder, since Fe is practically insoluble in Sn, so there will be no IMC? Thanks, Ioan --------------------------------------------------- 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 ----------------------------------------------------- --------------------------------------------------- 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 ----------------------------------------------------- --------------------------------------------------- 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 -----------------------------------------------------