May I too, if you please
Meilleures Salutations
Very Best Regards
Roland
www.PCBspecialist.com
Roland Jaquet
14 Champ Budin
1258 Perly, GENEVA
SWTZERLAND
TEL+41-22-880-0405 GSM+41-79-203-3723 FAX +41-22-880-0409
There are three constant in life... Change, Choice & Principles.
Stephen R. Covey
-----Message d'origine-----
De : TechNet [mailto:[log in to unmask]] De la part de Lee parker
Envoyé : jeudi, 24. mai 2007 16:35
Ā : [log in to unmask]
Objet : Re: [TN] SV: [TN] SV: [TN] Definition of Eutectic Solder
Herminia
Please send me a copy.
Thanks
Lee
J. Lee Parker, Ph.D.
JLP Consultants LLC
804 779 3389
----- Original Message -----
From: "Herminia Guevarra" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, May 24, 2007 8:54 AM
Subject: Re: [TN] SV: [TN] SV: [TN] Definition of Eutectic Solder
Vielen Dank!
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Hernefjord Ingemar
Sent: Thursday, May 24, 2007 8:00 AM
To: [log in to unmask]
Subject: Re: [TN] SV: [TN] SV: [TN] Definition of Eutectic Solder
Naturalmente..lo me parece muy bien
Inge
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Herminia Guevarra
Sent: den 24 maj 2007 13:23
To: [log in to unmask]
Subject: Re: [TN] SV: [TN] SV: [TN] Definition of Eutectic Solder
I'm also anxious to have this report. Please include me...
Herminia
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Frederick Miller
Sent: Thursday, May 24, 2007 7:55 AM
To: [log in to unmask]
Subject: Re: [TN] SV: [TN] SV: [TN] Definition of Eutectic Solder
Add me to the list.
Fred
-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Victor G. Hernandez
Sent: Wednesday, May 23, 2007 4:17 PM
To: [log in to unmask]
Subject: Re: [TN] SV: [TN] SV: [TN] Definition of Eutectic Solder
I would like to view this presentation/report.
Victor,
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Hfjord
Sent: Wednesday, May 23, 2007 3:16 PM
To: [log in to unmask]
Subject: [TN] SV: [TN] SV: [TN] Definition of Eutectic Solder
Richard, George, Werner etc chief gnus,
Want a very advanced article on the theme SAC, IMC, Phosphorous rich Ni,
diffusion rate, solidifying, wetting, ENIG, crystallographic pictures, SEM
pictures, etched cross sections, X-ray investigations, microprobing...more
than 30 pages?
I made a consulting job (metallurgists, need assistance) and had a two hours
presentation of my job. Both companies were satisfied, much thanks to advice
from you, but also thanks to my collegue, who is from Beijing.
He gave me a report that lifted my eyes. I've never seen SAC/ENIG cross
section presentations like that. Not even from China Lake. Can send offline
if you are not too many. Please, be aware this is not a popularised kind of
presentation, but at a advanced metallographic level. You may have it
already...don't know, but the report is fresh.
Inge
-----Ursprungligt meddelande-----
Från: TechNet [mailto:[log in to unmask]] För Werner Engelmaier
Skickat: den 23 maj 2007 20:44
Till: [log in to unmask]
Ämne: Re: [TN] SV: [TN] Definition of Eutectic Solder
Hi Richard,
If you try to solder at or just above the Solidus temperature, you need a
long time to get wetting [it takes thermal energy to dissolve the base metal
into Sn], and you may not get good wetting art all. That is why I recommend
Liquidus+20C for reflow soldering to Cu, and Liquidus+35C for reflow
soldering to
Ni. This time above 183 recommendation of 60 to 90 sec is wrong.
Werner
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