Hi Werner, IPC LF Listservers,

Thanks

"that SAC has been proven at least as reliable as"

I too had difficulty with that set of words in an otherwise good article.


"proven" to me means beyond doubt and out to 100Khrs with repeated On-Offs
or 20 years.

"as reliable as" means  SAC reliability =/> SnPb reliability
 which gives the impression that SAC is superior to SnPb.

The paragraph this sentence is in, is misleading from a language and idea
connectivety viewpoint JUST BECAUSE that first sentence is connected to
industry sources that seem to approve of this first sentence. The person
(lady) I heard talk that is part of the IPC Solder Products Value Council
did agree with the choice of SnAgCu YET ONLY because they had to compete
and sell product to the EU,  NOT because of reliability or environmental
concerns with Silver.

<-------- Copied from the March 2005 issue of Circuits Assembly---->
Extensive testing has proven SnAgCu to be at least as reliable as SnPb
eutectic. Several industry groups have recommended the SnAgCu alloys,
including iNEMI (inemi.org), IPC's Solder Products Value Council, High-
Density Packaging User Group, E3 (the top three European semiconductor
manufacturers: Infineon, Philips, STMicroelectronics), the IDEALS program
in Europe (Improved Design Life and Environmentally Aware Manufacture of
Electronics Assemblies by Lead-free Soldering), Soldertec at ITRI (Europe),
the Printed Circuit Interconnection Federation (a U.K. trade organization)
and the Japan Electronics and Information Technology Industries
Association.1-4
<------------------------------------------------------------

With Kay's comment to a technical journalist printed in Electronics Weekly
I can be a bit forgiving yet NIST-Carol and nemi had more editorial control
of the ideas they wished to transmit into print.


Yours in Engineering, Dave
Y i Engr, MA/NY DDave

P.S. Hey I hope you had a good time with your Grandkids, I am still waiting
for mine so I can show them how to do tricks on roller skates or with
mathematics.

-------------------------------------------------------------------------------Leadfee Mail List provided as a 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 Leadfree
To temporarily stop/(start) delivery of Leadree for vacation breaks send: SET Leadfree NOMAIL/(MAIL)
Search previous postings 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
-------------------------------------------------------------------------------