The three alloys you mention are three of the "top dogs" in the hunt for a
lead-free alloy.
They are not drop in. Check out the IPC Leadfree discussion group.
http://jefry.ipc.org/archives/leadfree.html

> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]]On Behalf Of Atkinson, Neil
> Sent: Thursday, March 14, 2002 12:23 PM
> To: [log in to unmask]
> Subject: [TN] lead Free
>
>
> One of our suppliers is 'proposing' a new lead free finish which he says
> will solder perfectly well with 'normal' SnPb solder as well as Lead Free.
>
> The finishes they are proposing are SnAg, SnBi and SnCuAg.  my
> question is,
> Does anyone have experience with using these finishes through a normal
> process and are there any 'pitfalls' top look out for.
>
> There is a lot of talk about total Pb free processes but what about the
> interim - are the new finishes 'backwards compatible'!!
>
> Thanks in anticipation of everyone's responses.
>
> Neil
>
>
>
>
>
>
>
>

---------------------------------------------------------------------------------
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 previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail 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
---------------------------------------------------------------------------------