That's a pretty brazen statement. Dewey -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of John Burke Sent: Wednesday, March 28, 2007 9:47 AM To: [log in to unmask] Subject: Re: [TN] Soldering to Beryillum Copper Weld them John Burke (408) 515 4992 -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Kane, Amol (349) Sent: Wednesday, March 28, 2007 9:17 AM To: [log in to unmask] Subject: Re: [TN] Soldering to Beryillum Copper Unfortunately not. They are battery contacts. we need to solder the wires coming out of a battery to these. The contacts are in a plastic housing and cannot be taken out. Amol -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Creswick, Steven Sent: Wednesday, March 28, 2007 12:09 PM To: [log in to unmask] Subject: Re: [TN] Soldering to Beryillum Copper Amol, Can you pre-tin the component leads in a small pot using a stronger flux, wash, then use the NC for 'assembly'?? Steve -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Kane, Amol (349) Sent: Wednesday, March 28, 2007 11:36 AM To: [log in to unmask] Subject: Re: [TN] Soldering to Beryillum Copper Thank for your reply Michael. Correct, I am soldering to the Ni. Unfortunately cannot use the stronger OA flux, hence the issue. I will try to find out the type of nickel on the surface, but would that really help me out with determining the fix?....probably not.......will try the mechanical cleaning approach on a few to see how they pan out. Thanks, Amol -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Barmuta, Michael Sent: Wednesday, March 28, 2007 11:29 AM To: [log in to unmask] Subject: Re: [TN] Soldering to Beryillum Copper Hi Amol: Unless I missed something you are actually soldering to the nickel not the beryllium Cu substrate. You do not say what type of nickel or thickness of nickel your are trying to solder to i.e. electroless, electroplated, heat treated, alloyed, etc. However in general, nickel is difficult to solder due to the formation of tenacious oxides on it's surface. The NC flux you are using is probably insufficient in strength to clean and activate the nickel to allow proper wetting. You can go to a stronger flux system such as an organic acid (OA)but this must be thoroughly washed off or it will leave corrosive residues. You can also use mechanical cleaning/abrasion to remove the oxides and prep the surface. However I would not recommend it. The abrasive media can get imbedded into the surface and if not completely removed make the situation worse. All the major solder/flux suppliers carry various OA fluxes and can help you with your application. Regards Michael Barmuta Staff Engineer Fluke Corp. Everett WA 425-446-6076 -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Kane, Amol (349) Sent: Wednesday, March 28, 2007 7:59 AM To: [log in to unmask] Subject: [TN] Soldering to Beryillum Copper Dear Members, I am trying to hand solder to a substrate that, I have been told is Ni plated Beryllium Copper with SnPb no clean process (it is actually for a battery termination). Are there special considerations involved when soldering to this substrate? I am having a hard time getting the solder to wet and stick to the substrate. It just balls up (doesn't stick) and refuses to form a bond. I have already tried cleaning the area with alcohol without success. Any pointers/information that I am not aware of? Thanks in advance, Amol -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Dehoyos, Ramon Sent: Friday, May 05, 2006 8:05 AM To: [log in to unmask] Subject: Re: [TN] PWB de-paneling Hi Sumx: Drill holes, in the center of the joints forming a line (tabs, become mouse bites). Holes should be made by a drill whose diameter is smaller than the width of the joints with a gap of about 100 mills from adjacent sides. Bend the tabs 30 degrees towards one side and then the opposite side, repeat till the tabs break off. Pull tab away from the board. Note: do not bend to one side and pull. It is still attached from one side and it will tear off glass fibers. The bend must be made to one side and to the other and repeat till the tabs breaks off. Pull tab away from the board and not in the direction the top or bottom of the board is facing. Regards, Ramon -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Sumxplore Sent: Thursday, May 04, 2006 10:47 AM To: [log in to unmask] Subject: Re: [TN] PWB de-paneling I received a board without v-score but with 2 joints.Any idea how to singulate it as the board with csp around 8mils from the edge or any suggestion on how to redesign the boards for manufacturability. Appreciate any input.Thanks in advance. rgds sumxp ----- Original Message ----- From: "Lee Parker" <[log in to unmask]> To: <[log in to unmask]> Sent: Thursday, May 04, 2006 3:35 AM Subject: Re: [TN] PWB de-paneling > Victor > > > > Your boards may have been scored and the sheared or even punched when > they were depanelized. Punching is not uncommon in Asia even for > multilayer boards. In Asia the standard is what ever you specify. If > left unspecified all things are possible. > > > > Best regards > > > > Lee > > > > J. L. Parker Ph.D. > > JLP Consultants LLC > > (804) 779 3389 > > > > > > > > -----Original Message----- > From: TechNet [mailto:[log in to unmask]] On Behalf Of Victor G. > Hernandez > Sent: Tuesday, May 02, 2006 11:33 AM > To: [log in to unmask] > Subject: [TN] PWB de-paneling > > > > Fellow TechNetters: > > > > What are some common acceptable practices for de-paneling PWB? > > I am more familiar with routing, which provides a smooth edge with > good > > quality control. > > > > I have observed some PWB from overseas suppliers with an edge that > > appears snapped with frayed edges. > > Is this in according with IPC Standards? > > > > Victor, > > > > --------------------------------------------------- > > Technet Mail List provided as a service by IPC using LISTSERV 1.8e > > 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 1.8e 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 > ----------------------------------------------------- > > > -- > Internal Virus Database is out-of-date. > Checked by AVG Free Edition. > Version: 7.1.375 / Virus Database: 268.3.1/291 - Release Date: > 3/24/2006 > > --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e 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 1.8e 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 ----------------------------------------------------- CONFIDENTIALITY NOTICE: This e-mail, and any attachments, is for the sole use of the intended recipient(s) and may contain information that is confidential and protected from disclosure under the law. Any unauthorized review, use, disclosure, or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail, and delete/destroy all copies of the original message and attachments. Thank you. --------------------------------------------------- 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 ----------------------------------------------------- This message (including any attachments) contains confidential and/or proprietary information intended only for the addressee. Any unauthorized disclosure, copying, distribution or reliance on the contents of this information is strictly prohibited and may constitute a violation of law. If you are not the intended recipient, please notify the sender immediately by responding to this e-mail, and delete the message from your system. If you have any questions about this e-mail please notify the sender immediately. --------------------------------------------------- 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 ----------------------------------------------------- CONFIDENTIALITY NOTICE: This e-mail, and any attachments, is for the sole use of the intended recipient(s) and may contain information that is confidential and protected from disclosure under the law. Any unauthorized review, use, disclosure, or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail, and delete/destroy all copies of the original message and attachments. Thank you. --------------------------------------------------- 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 ----------------------------------------------------- THE INFORMATION CONTAINED IN THIS E-MAIL MESSAGE AND ANY ATTACHMENTS SENT FROM GENTEX CORPORATION IS GENTEX CONFIDENTIAL INFORMATION INTENDED ONLY FOR THE PERSONAL USE OF THE INDIVIDUAL OR ENTITY NAMED ABOVE. If you are not the intended recipient, you are hereby notified that any review, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please immediately notify the sender by return e-mail, and delete this e-mail message and any attachments from your computer. --------------------------------------------------- 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 ----------------------------------------------------- CONFIDENTIALITY NOTICE: This e-mail, and any attachments, is for the sole use of the intended recipient(s) and may contain information that is confidential and protected from disclosure under the law. Any unauthorized review, use, disclosure, or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail, and delete/destroy all copies of the original message and attachments. Thank you. --------------------------------------------------- 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 -----------------------------------------------------