I have used one vendors ENIG and the lead stabilizer in the nickel bath was less than 10ppm, the amount codeposited with the nickel and phosphorus will be even less. Russ >From: "Burtt, Nigel" <[log in to unmask]> >Reply-To: TechNet E-Mail Forum <[log in to unmask]>, "Burtt, >Nigel" <[log in to unmask]> >To: [log in to unmask] >Subject: Re: [TN] ENIG Board finish and RoHS >Date: Fri, 20 May 2005 14:00:47 +0100 > >Thanks we are doing some testing of IAG finishes on both current >non-RoHS product and prototype RoHS designs > >At to levels, I heard less than 800ppm Pb which is JUST under the limit, >but Cd is above the 100ppm limit. > > > >-----Original Message----- >From: Jeffrey Bush [mailto:[log in to unmask]] >Sent: 20 May 2005 13:29 >To: TechNet E-Mail Forum; Burtt, Nigel >Subject: RE: [TN] ENIG Board finish and RoHS > >I would advise integrated some IAG testing in with your RoHS evaluation >programs. Much effort in improvements are underway on the chemistry end >and this appears to the a finish that will prevail. > >Note: My understand was that the levels of banned subst. in ENIG were >well under the RoHS limits. > >Jeffrey Bush >Director, Quality Assurance and Technical Support > >VERMONT CIRCUITS INCORPORATED > 76 Technology Drive - POB 1890 > Brattleboro, Vermont 05302 > Voice: 802.257.4571.21 Fax: 802.257.0011 > http://www.vtcircuits.com > > >-----Original Message----- >From: Burtt, Nigel [mailto:[log in to unmask]] >Sent: Friday, May 20, 2005 5:05 AM >To: [log in to unmask] >Subject: Re: [TN] ENIG Board finish and RoHS > >This has been discussed on this and other forums previously within the >last year. > >We have been told certain types of finish chemistry for both ENIG and >Immersion Sn can contain levels of Pb and Cd as stabilising agents and >this can make the material deposited very close to or exceeding the RoHS >limits. However, the chemistry suppliers are working on this and don't >expect this to a problem in the long term. That said, if you want a RoHS >compliant PCB now you had better check with your supplier about the >chemistry they use to make sure they can provide it! > >We've used ENIG for years as our finish of choice for SMT/mixed >technology with HASL left for conventional PTH only, but are considering >moving to Immersion Ag as a standard for both on any reasonable volume >RoHS compliant product where shelflife should not be an issue. This >problem with non-RoHS compliant ENIG is part of that decision, but >mostly the occasional batch of ENIG that has solderability problems with >no-clean fluxes is a difficulty that won't go away. Pb-F HASL is >available but not falt enough for SMT I feel and I understand this >process still has its own problems for the PCB manufacturers too - maybe >early days? > >Does anyone think Immersion Ag is a very bad idea? > > >Nigel Burtt >Production Engineering Manager >Dolby Labs - European HQ >Email: [log in to unmask] >Tel: +44 (0)1793 842132 [direct line with voicemail] >Fax: +44 (0)1793 842101 > > >-----Original Message----- >From: Jason Gregory [mailto:[log in to unmask]] >Sent: 19 May 2005 23:17 >Subject: Re: ENIG Board finish and RoHS > >Methinks that is a really good question. > >Jason Gregory >Manufacturing Engineer >Innova Electronics >(281)653-5593 >(281)653-5594 fax >(281)212-0844 cell >[log in to unmask] > > >-----Original Message----- >From: TechNet [mailto:[log in to unmask]]On Behalf Of Bob Donaldson >Sent: Thursday, May 19, 2005 4:58 PM >To: [log in to unmask] >Subject: [TN] ENIG Board finish and RoHS > > >I had an interesting question come up. One of my customers questioned >whether ENIG board finishes were RoHS compliant because in their metal >finishing world nickel plating baths commonly used lead in them to help >in the plating. So I asked a boardshop I was working with if the ENIG >processing they were using had lead in the nickel plating baths. They >said it did so we both were wondering if this makes ENIG a non compliant >finish for RoHS. Can someone please shed light on whether this is true >or not? >If it is compliant must the platers remove lead form their baths or is >the concentration so low it falls within the accepted criteria? > >Thanks, >Bob D. > >--------------------------------------------------- >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 >----------------------------------------------------- > >----------------------------------------- >This message (including any attachments) may contain confidential >information intended for a specific individual and purpose. 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If you are not the >intended recipient, disclosing, copying, distributing, or taking any >action based on this message is strictly prohibited. > > >--------------------------------------------------- >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 >----------------------------------------------------- --------------------------------------------------- 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 -----------------------------------------------------