Empathy List Archives

AB

Andrea Baldoni

Sun, Jun 26, 2016 2:12 PM

Hello All.

I measured the thermal EMF of two common solder, the lead free
Sn96.5/Ag3/Cu0.5 and the old Sn60/Pb40.
I have ordered a spool of Sn96/Ag4 (the recommended low-thermal-EMF replacement
for cadmium based one) and I will post the result for this too.
I could probably find also Sn97/Ag3 and Sn97/Cu3 if it's reasonable to check
them; I accept suggestion on what else to try between the RoHS complaint ones.

Copper - Sn96.5/Ag3/Cu0.5 -> 3.4uV^C
Copper - Sn60/Pb40 -> 3.3uV^C

Best regards,
Andrea Baldoni

Hello All. I measured the thermal EMF of two common solder, the lead free Sn96.5/Ag3/Cu0.5 and the old Sn60/Pb40. I have ordered a spool of Sn96/Ag4 (the recommended low-thermal-EMF replacement for cadmium based one) and I will post the result for this too. I could probably find also Sn97/Ag3 and Sn97/Cu3 if it's reasonable to check them; I accept suggestion on what else to try between the RoHS complaint ones. Copper - Sn96.5/Ag3/Cu0.5 -> 3.4uV^C Copper - Sn60/Pb40 -> 3.3uV^C Best regards, Andrea Baldoni

D

David

Sun, Jun 26, 2016 4:55 PM

There was a discussion on EEVBlog about low EMF solders which said
Keithley recommended Sn96Ag4 but I was never able to confirm it.

I have a spool of something from Kester that may be Sn96Ag4 but it is
only marked Sn96.

http://www.eevblog.com/forum/projects/low-thermal-emf-solder/msg906573/#msg906573

"just looked for low EMF solder and as stated in other threads
Keithley suggests for 2182 Sn96/Ag4"

On Sun, 26 Jun 2016 16:12:38 +0200, you wrote:

Hello All.

I measured the thermal EMF of two common solder, the lead free
Sn96.5/Ag3/Cu0.5 and the old Sn60/Pb40.
I have ordered a spool of Sn96/Ag4 (the recommended low-thermal-EMF replacement
for cadmium based one) and I will post the result for this too.
I could probably find also Sn97/Ag3 and Sn97/Cu3 if it's reasonable to check
them; I accept suggestion on what else to try between the RoHS complaint ones.

Copper - Sn96.5/Ag3/Cu0.5 -> 3.4uV^C
Copper - Sn60/Pb40 -> 3.3uV^C

Best regards,
Andrea Baldoni

There was a discussion on EEVBlog about low EMF solders which said Keithley recommended Sn96Ag4 but I was never able to confirm it. I have a spool of something from Kester that may be Sn96Ag4 but it is only marked Sn96. http://www.eevblog.com/forum/projects/low-thermal-emf-solder/msg906573/#msg906573 "just looked for low EMF solder and as stated in other threads Keithley suggests for 2182 Sn96/Ag4" On Sun, 26 Jun 2016 16:12:38 +0200, you wrote: >Hello All. > >I measured the thermal EMF of two common solder, the lead free >Sn96.5/Ag3/Cu0.5 and the old Sn60/Pb40. >I have ordered a spool of Sn96/Ag4 (the recommended low-thermal-EMF replacement >for cadmium based one) and I will post the result for this too. >I could probably find also Sn97/Ag3 and Sn97/Cu3 if it's reasonable to check >them; I accept suggestion on what else to try between the RoHS complaint ones. > >Copper - Sn96.5/Ag3/Cu0.5 -> 3.4uV^C >Copper - Sn60/Pb40 -> 3.3uV^C > >Best regards, > Andrea Baldoni

TM

Todd Micallef

Sun, Jun 26, 2016 5:15 PM

I believe it is listed in the document that comes with Keithley's 2188
connector. There is a brief mention here ...

http://www.signaltestinc.com/v/vspfiles/assets/datasheet/Cnctr-Adpt-Tools_Acc.pdf

Todd

On Sun, Jun 26, 2016 at 12:55 PM, David davidwhess@gmail.com wrote:

There was a discussion on EEVBlog about low EMF solders which said
Keithley recommended Sn96Ag4 but I was never able to confirm it.

I have a spool of something from Kester that may be Sn96Ag4 but it is
only marked Sn96.

http://www.eevblog.com/forum/projects/low-thermal-emf-solder/msg906573/#msg906573

"just looked for low EMF solder and as stated in other threads
Keithley suggests for 2182 Sn96/Ag4"

On Sun, 26 Jun 2016 16:12:38 +0200, you wrote:

Hello All.

I measured the thermal EMF of two common solder, the lead free
Sn96.5/Ag3/Cu0.5 and the old Sn60/Pb40.
I have ordered a spool of Sn96/Ag4 (the recommended low-thermal-EMF

replacement

for cadmium based one) and I will post the result for this too.
I could probably find also Sn97/Ag3 and Sn97/Cu3 if it's reasonable to

check

them; I accept suggestion on what else to try between the RoHS complaint

ones.

Copper - Sn96.5/Ag3/Cu0.5 -> 3.4uV^C
Copper - Sn60/Pb40 -> 3.3uV^C

Best regards,
Andrea Baldoni

volt-nuts mailing list -- volt-nuts@febo.com
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts
and follow the instructions there.

I believe it is listed in the document that comes with Keithley's 2188 connector. There is a brief mention here ... http://www.signaltestinc.com/v/vspfiles/assets/datasheet/Cnctr-Adpt-Tools_Acc.pdf Todd On Sun, Jun 26, 2016 at 12:55 PM, David <davidwhess@gmail.com> wrote: > There was a discussion on EEVBlog about low EMF solders which said > Keithley recommended Sn96Ag4 but I was never able to confirm it. > > I have a spool of something from Kester that may be Sn96Ag4 but it is > only marked Sn96. > > > http://www.eevblog.com/forum/projects/low-thermal-emf-solder/msg906573/#msg906573 > > "just looked for low EMF solder and as stated in other threads > Keithley suggests for 2182 Sn96/Ag4" > > On Sun, 26 Jun 2016 16:12:38 +0200, you wrote: > > >Hello All. > > > >I measured the thermal EMF of two common solder, the lead free > >Sn96.5/Ag3/Cu0.5 and the old Sn60/Pb40. > >I have ordered a spool of Sn96/Ag4 (the recommended low-thermal-EMF > replacement > >for cadmium based one) and I will post the result for this too. > >I could probably find also Sn97/Ag3 and Sn97/Cu3 if it's reasonable to > check > >them; I accept suggestion on what else to try between the RoHS complaint > ones. > > > >Copper - Sn96.5/Ag3/Cu0.5 -> 3.4uV^C > >Copper - Sn60/Pb40 -> 3.3uV^C > > > >Best regards, > > Andrea Baldoni > _______________________________________________ > volt-nuts mailing list -- volt-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts > and follow the instructions there. >

O

Oz-in-DFW

Sun, Jun 26, 2016 5:24 PM

On 6/26/2016 9:12 AM, Andrea Baldoni wrote:

Hello All.

I measured the thermal EMF of two common solder, the lead free
Sn96.5/Ag3/Cu0.5 and the old Sn60/Pb40.
I have ordered a spool of Sn96/Ag4 (the recommended low-thermal-EMF replacement
for cadmium based one) and I will post the result for this too.
I could probably find also Sn97/Ag3 and Sn97/Cu3 if it's reasonable to check
them; I accept suggestion on what else to try between the RoHS complaint ones.

Copper - Sn96.5/Ag3/Cu0.5 -> 3.4uV^C
Copper - Sn60/Pb40 -> 3.3uV^C

Best regards,
Andrea Baldoni

volt-nuts mailing list -- volt-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts
and follow the instructions there.

Andrea,

Thanks for this.

I suspect that if you contact any of the solder manufacturers,
particularly Indium Corp. or Kester and explain what you are doing,
they'll happily provide samples.

Sn96.5/Ag3.0/Cu0.5 is also commonly known as SAC 305

Sn95.5/Ag4/Cu0.5 is similarly known as SAC 405

Oz (in DFW, Texas, US)

--
mailto:oz@ozindfw.net
Oz
POB 93167
Southlake, TX 76092 (Near DFW Airport)

On 6/26/2016 9:12 AM, Andrea Baldoni wrote: > Hello All. > > I measured the thermal EMF of two common solder, the lead free > Sn96.5/Ag3/Cu0.5 and the old Sn60/Pb40. > I have ordered a spool of Sn96/Ag4 (the recommended low-thermal-EMF replacement > for cadmium based one) and I will post the result for this too. > I could probably find also Sn97/Ag3 and Sn97/Cu3 if it's reasonable to check > them; I accept suggestion on what else to try between the RoHS complaint ones. > > Copper - Sn96.5/Ag3/Cu0.5 -> 3.4uV^C > Copper - Sn60/Pb40 -> 3.3uV^C > > Best regards, > Andrea Baldoni > _______________________________________________ > volt-nuts mailing list -- volt-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts > and follow the instructions there. Andrea, Thanks for this. I suspect that if you contact any of the solder manufacturers, particularly Indium Corp. or Kester and explain what you are doing, they'll happily provide samples. Sn96.5/Ag3.0/Cu0.5 is also commonly known as SAC 305 Sn95.5/Ag4/Cu0.5 is similarly known as SAC 405 Oz (in DFW, Texas, US) -- mailto:oz@ozindfw.net Oz POB 93167 Southlake, TX 76092 (Near DFW Airport)

AB

Andrea Baldoni

Sun, Jun 26, 2016 5:55 PM

On Sun, Jun 26, 2016 at 11:55:56AM -0500, David wrote:

I have a spool of something from Kester that may be Sn96Ag4 but it is
only marked Sn96.

Sn96 could also be the trade name for the Sn96.5/Ag3.5.

Name Composition

SAC101 Sn98.9 Ag1.0 Cu0.1
SAC105 Sn98.5 Ag1.0 Cu0.5
SAC125 Sn98.3 Ag1.2 Cu0.5
SAC125+Ni Sn 98.25 Ag 1.2 Cu 0.5 Ni 0.05
SAC266 Sn96.8 Ag2.6 Cu0.6
SAC300 Sn96.95 Ag3.0 Cu0.05
SAC305 Sn96.5 Ag3.0 Cu0.5
SAC307 Sn96.3 Ag3.0 Cu0.7

```
  Sn80.8 Sb18 Ni1.2
```
```
  Sn98.9 Ag1.0 Cu0.5
```

SAC350 Sn96.45 Ag3.5 Cu0.05
SAC387 Sn95.5 Ag3.8 Cu0.7
SAC400 Sn95.95 Ag4.0 Cu0.05
SAC405 Sn95.5 Ag4.0 Cu0.5
Sn96 Sn96.5 Ag3.5

(non lead free:)
Sn63 Sn63 Pb37
Sn62 Sn62 Pb36 Ag2.0
Sn10 Sn10 Pb90

The Sn96/Ag4 seems to be for the food service equipment, refrigeration,
heating, air conditioning, plumbing and not common in electronics.
The Sn10/Pb90 is also known as low EMF but being non RoHS I don't think it's
easy to find it (though not too dangerous to work with).

I don't know if the .5% Ag between the 96.5/3.5 and 96/4 would change much in
the EMF, I'll test it and report, if I find both.

Best regards,
Andrea Baldoni

On Sun, Jun 26, 2016 at 11:55:56AM -0500, David wrote: > I have a spool of something from Kester that may be Sn96Ag4 but it is > only marked Sn96. Sn96 could also be the trade name for the Sn96.5/Ag3.5. Name Composition SAC101 Sn98.9 Ag1.0 Cu0.1 SAC105 Sn98.5 Ag1.0 Cu0.5 SAC125 Sn98.3 Ag1.2 Cu0.5 SAC125+Ni Sn 98.25 Ag 1.2 Cu 0.5 Ni 0.05 SAC266 Sn96.8 Ag2.6 Cu0.6 SAC300 Sn96.95 Ag3.0 Cu0.05 SAC305 Sn96.5 Ag3.0 Cu0.5 SAC307 Sn96.3 Ag3.0 Cu0.7 - Sn80.8 Sb18 Ni1.2 - Sn98.9 Ag1.0 Cu0.5 SAC350 Sn96.45 Ag3.5 Cu0.05 SAC387 Sn95.5 Ag3.8 Cu0.7 SAC400 Sn95.95 Ag4.0 Cu0.05 SAC405 Sn95.5 Ag4.0 Cu0.5 Sn96 Sn96.5 Ag3.5 (non lead free:) Sn63 Sn63 Pb37 Sn62 Sn62 Pb36 Ag2.0 Sn10 Sn10 Pb90 The Sn96/Ag4 seems to be for the food service equipment, refrigeration, heating, air conditioning, plumbing and not common in electronics. The Sn10/Pb90 is also known as low EMF but being non RoHS I don't think it's easy to find it (though not too dangerous to work with). I don't know if the .5% Ag between the 96.5/3.5 and 96/4 would change much in the EMF, I'll test it and report, if I find both. Best regards, Andrea Baldoni

TM

Todd Micallef

Sun, Jun 26, 2016 7:17 PM

Andrea,

Thank you for your research. A few years ago I purchased some Pb free
solder from Radio Shack. I recently discovered it is listed as 96/4 solder.

The part number is 640-0025
https://www.radioshack.com/products/lead-free-solder-0-25-oz?variant=5717831877

The MSDS is listed on the webpage. Any chance you could add it to your
list?

Todd

On Sun, Jun 26, 2016 at 1:55 PM, Andrea Baldoni erm191ba3@ermione.com
wrote:

On Sun, Jun 26, 2016 at 11:55:56AM -0500, David wrote:

I have a spool of something from Kester that may be Sn96Ag4 but it is
only marked Sn96.

Sn96 could also be the trade name for the Sn96.5/Ag3.5.

Name Composition

SAC101 Sn98.9 Ag1.0 Cu0.1
SAC105 Sn98.5 Ag1.0 Cu0.5
SAC125 Sn98.3 Ag1.2 Cu0.5
SAC125+Ni Sn 98.25 Ag 1.2 Cu 0.5 Ni 0.05
SAC266 Sn96.8 Ag2.6 Cu0.6
SAC300 Sn96.95 Ag3.0 Cu0.05
SAC305 Sn96.5 Ag3.0 Cu0.5
SAC307 Sn96.3 Ag3.0 Cu0.7

```
          Sn80.8 Sb18 Ni1.2
```
```
          Sn98.9 Ag1.0 Cu0.5
```

SAC350 Sn96.45 Ag3.5 Cu0.05
SAC387 Sn95.5 Ag3.8 Cu0.7
SAC400 Sn95.95 Ag4.0 Cu0.05
SAC405 Sn95.5 Ag4.0 Cu0.5
Sn96 Sn96.5 Ag3.5

(non lead free:)
Sn63 Sn63 Pb37
Sn62 Sn62 Pb36 Ag2.0
Sn10 Sn10 Pb90

The Sn96/Ag4 seems to be for the food service equipment, refrigeration,
heating, air conditioning, plumbing and not common in electronics.
The Sn10/Pb90 is also known as low EMF but being non RoHS I don't think
it's
easy to find it (though not too dangerous to work with).

I don't know if the .5% Ag between the 96.5/3.5 and 96/4 would change much
in
the EMF, I'll test it and report, if I find both.

Best regards,
Andrea Baldoni

volt-nuts mailing list -- volt-nuts@febo.com
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts
and follow the instructions there.

Andrea, Thank you for your research. A few years ago I purchased some Pb free solder from Radio Shack. I recently discovered it is listed as 96/4 solder. The part number is 640-0025 https://www.radioshack.com/products/lead-free-solder-0-25-oz?variant=5717831877 The MSDS is listed on the webpage. Any chance you could add it to your list? Todd On Sun, Jun 26, 2016 at 1:55 PM, Andrea Baldoni <erm191ba3@ermione.com> wrote: > On Sun, Jun 26, 2016 at 11:55:56AM -0500, David wrote: > > > I have a spool of something from Kester that may be Sn96Ag4 but it is > > only marked Sn96. > > Sn96 could also be the trade name for the Sn96.5/Ag3.5. > > Name Composition > > SAC101 Sn98.9 Ag1.0 Cu0.1 > SAC105 Sn98.5 Ag1.0 Cu0.5 > SAC125 Sn98.3 Ag1.2 Cu0.5 > SAC125+Ni Sn 98.25 Ag 1.2 Cu 0.5 Ni 0.05 > SAC266 Sn96.8 Ag2.6 Cu0.6 > SAC300 Sn96.95 Ag3.0 Cu0.05 > SAC305 Sn96.5 Ag3.0 Cu0.5 > SAC307 Sn96.3 Ag3.0 Cu0.7 > - Sn80.8 Sb18 Ni1.2 > - Sn98.9 Ag1.0 Cu0.5 > SAC350 Sn96.45 Ag3.5 Cu0.05 > SAC387 Sn95.5 Ag3.8 Cu0.7 > SAC400 Sn95.95 Ag4.0 Cu0.05 > SAC405 Sn95.5 Ag4.0 Cu0.5 > Sn96 Sn96.5 Ag3.5 > > (non lead free:) > Sn63 Sn63 Pb37 > Sn62 Sn62 Pb36 Ag2.0 > Sn10 Sn10 Pb90 > > The Sn96/Ag4 seems to be for the food service equipment, refrigeration, > heating, air conditioning, plumbing and not common in electronics. > The Sn10/Pb90 is also known as low EMF but being non RoHS I don't think > it's > easy to find it (though not too dangerous to work with). > > I don't know if the .5% Ag between the 96.5/3.5 and 96/4 would change much > in > the EMF, I'll test it and report, if I find both. > > Best regards, > Andrea Baldoni > _______________________________________________ > volt-nuts mailing list -- volt-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts > and follow the instructions there. >

AB

Andreas Bergmann

Sun, Jun 26, 2016 7:48 PM

Hi Andrea,

Am 26.06.2016 19:55, schrieb Andrea Baldoni:

I don't know if the .5% Ag between the 96.5/3.5 and 96/4 would change
much in
the EMF, I'll test it and report, if I find both.

You can get Sn96Ag4 from Reichelt (http://www.reichelt.de/).

I purchased some days ago this:
https://www.reichelt.de/Loetzinn/LZ-F2-BF-0-8-250/3/index.html?ACTION=3&GROUPID=557&ARTICLE=47305&OFFSET=500&

Regards,

Andreas

Hi Andrea, Am 26.06.2016 19:55, schrieb Andrea Baldoni: > I don't know if the .5% Ag between the 96.5/3.5 and 96/4 would change > much in > the EMF, I'll test it and report, if I find both. You can get Sn96Ag4 from Reichelt (http://www.reichelt.de/). I purchased some days ago this: https://www.reichelt.de/Loetzinn/LZ-F2-BF-0-8-250/3/index.html?ACTION=3&GROUPID=557&ARTICLE=47305&OFFSET=500& Regards, Andreas

DD

Dr. David Kirkby (Kirkby Microwave Ltd)

Sun, Jun 26, 2016 8:07 PM

On 26 June 2016 at 15:12, Andrea Baldoni erm191ba3@ermione.com wrote:

Hello All.

I measured the thermal EMF of two common solder, the lead free
Sn96.5/Ag3/Cu0.5 and the old Sn60/Pb40.

Please excuse my ignorance, but how do you mean the thermal EMF of solder?
Do you not need another metal, such as copper to make a junction? If so,
you are measuring the emf

Dave

On 26 June 2016 at 15:12, Andrea Baldoni <erm191ba3@ermione.com> wrote: > Hello All. > > I measured the thermal EMF of two common solder, the lead free > Sn96.5/Ag3/Cu0.5 and the old Sn60/Pb40. > Please excuse my ignorance, but how do you mean the thermal EMF of solder? Do you not need another metal, such as copper to make a junction? If so, you are measuring the emf Dave

AB

Andrea Baldoni

Mon, Jun 27, 2016 8:21 AM

On Sun, Jun 26, 2016 at 09:07:38PM +0100, Dr. David Kirkby (Kirkby Microwave Ltd) wrote:

Please excuse my ignorance, but how do you mean the thermal EMF of solder?
Do you not need another metal, such as copper to make a junction? If so,
you are measuring the emf

Hello David.
Yes, I measured it with copper, I mentioned it on the table of results.

Best regards,
Andrea Baldoni

On Sun, Jun 26, 2016 at 09:07:38PM +0100, Dr. David Kirkby (Kirkby Microwave Ltd) wrote: > Please excuse my ignorance, but how do you mean the thermal EMF of solder? > Do you not need another metal, such as copper to make a junction? If so, > you are measuring the emf Hello David. Yes, I measured it with copper, I mentioned it on the table of results. Best regards, Andrea Baldoni

volt-nuts@lists.febo.com

Thermal EMF of common solder