Morning Inge and Everybody! Got your pics posted Inge, and as usual, your pictures always give me a new window in which to see things. Here they are: http://stevezeva.homestead.com/files/SN100CSEM1.jpg http://stevezeva.homestead.com/files/SN100CSEM2.jpg I renamed your files and saved them as *.jpg files because my web page doesn't allow me to use *.tif files. We've only used SN100 here a few times, and you're right, ours looked just like regular 63/37 HASL. We've never had a SEM done on the boards we used, so I have nothing to compare your images to. But the boards we used were nice and shiny. Steve -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Hernefjord Ingemar Sent: Wednesday, June 24, 2009 7:55 AM To: [log in to unmask] Subject: [TN] SN100C I don't like the look of board pads Hi all, will send pictures to Steve. The two SEM images show SN100C boards that we got recently. I don't like the look of the solder surface. Very grainy and with lots of copper (darker spots). EDAX gives even fragments of iron. My first thought was that the manufacturer had contaminated baths, which will be denied, of course. Anyway, my opinion is, that SN100C should be more like ordinary tin/lead, i.e nearly zero copper and a more shiny approach. /Inge --------------------------------------------------- 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 -----------------------------------------------------