Date   

Re: Soldering Iron Temperature

Tommy Henderson
 

I use the Weller Tip"8" at 800F (that is about a 35W iron) and the Tip7 for 700F work (about a 28 to 30W Iron).  It depends on Tip length.  For surface mount using a 1.25" long tip, use the higher Temp, shorter tips for through hole as the 700 is closer to 750F with shorter tips.

Using a 20 to 25W iron ~ 650 may make you sleepy (on the amount of time spent holding the iron on the board to heat). 

Solders, I still use Sn 60/40 (close to 370F) or Eutectic 63/37. Have some 2%Ag for some work, and SN96-Ag3%-Cu1% or close to that which melts near 425F to ship outside US, Sn/Pb is preferred here.

Tommy - WD5AGO


Re: Soldering Iron Temperature

KM6KJE
 

try an infrared gun to check the temp tip of your gun

On Saturday, November 21, 2020, 06:42:32 PM PST, John - KK4ITX via groups.io <jleahy00@...> wrote:


Probably all of the answers are correct.

I have found that soldering irons and their reported temperatures only at best estimate the tip temperature. While it’s true various solders melt at a specific temperature your iron may read hotter or cooler, so one needs to experiment with their own unit because one temperature reading might be the correct one but the actual temperature at the tip will probably be different..... so we need to apply the commonly accepted approach and heat the pad and lead a bit prior to applying the solder.  The objective is to surround the lead by flowing solder around it and into the hole leaving a shiny bump of solder behind.

I have found that the cleaning of both the board and the leads with alcohol (not Evan Williams) to remove the crap from the manufacturer is quite helpful in producing a good looking joint.

A too low temperature will actually overheat a component because everything has to then be heated to the melting point of whatever solder is used.  A higher temperature allows for extreme heat quickly at the point of contact between the tip and the joints and the heat dissipates before it gets to the component.  Sensitive components may require a heat sink between it and the point of soldering.

Practice is very educational and resistors by the hundreds are quite cheap, pick up some PCB project boards and play with your iron and components and make a mess..... in a short time you will know how “your” iron, solder and technique make a good looking soldering job, the temperature reading helps but only after you’ve identified all of the quirks of your equipment.  3 or 4 dollars in parts and solder plus an hour or so should do it.

By the way, there are “practice” boards for SMT parts also and those components are really cheap...... push yourself a little it’s much easier than you think.

Good luck,
John
KK4ITX 

Visit:  www.zaarc.org.   👁

On Nov 21, 2020, at 19:49, Nate Bargmann <n0nb@...> wrote:

I guess I am the outlier, I use 640-645 typically unless it's a large
ground pad or joint and then I'll run it up past 700.  I like the lower
temperature as it doesn't burn the tip.  But maybe that was the cheap
Radio Shack iron I had in the '80s that did that...

72, Nate

--

"The optimist proclaims that we live in the best of all
possible worlds.  The pessimist fears this is true."

Web: https://www.n0nb.us
Projects: https://github.com/N0NB
GPG fingerprint: 82D6 4F6B 0E67 CD41 F689 BBA6 FB2C 5130 D55A 8819







Re: Soldering Iron Temperature

John - KK4ITX
 

Probably all of the answers are correct.

I have found that soldering irons and their reported temperatures only at best estimate the tip temperature. While it’s true various solders melt at a specific temperature your iron may read hotter or cooler, so one needs to experiment with their own unit because one temperature reading might be the correct one but the actual temperature at the tip will probably be different..... so we need to apply the commonly accepted approach and heat the pad and lead a bit prior to applying the solder.  The objective is to surround the lead by flowing solder around it and into the hole leaving a shiny bump of solder behind.

I have found that the cleaning of both the board and the leads with alcohol (not Evan Williams) to remove the crap from the manufacturer is quite helpful in producing a good looking joint.

A too low temperature will actually overheat a component because everything has to then be heated to the melting point of whatever solder is used.  A higher temperature allows for extreme heat quickly at the point of contact between the tip and the joints and the heat dissipates before it gets to the component.  Sensitive components may require a heat sink between it and the point of soldering.

Practice is very educational and resistors by the hundreds are quite cheap, pick up some PCB project boards and play with your iron and components and make a mess..... in a short time you will know how “your” iron, solder and technique make a good looking soldering job, the temperature reading helps but only after you’ve identified all of the quirks of your equipment.  3 or 4 dollars in parts and solder plus an hour or so should do it.

By the way, there are “practice” boards for SMT parts also and those components are really cheap...... push yourself a little it’s much easier than you think.

Good luck,
John
KK4ITX 

Visit:  www.zaarc.org.   👁

On Nov 21, 2020, at 19:49, Nate Bargmann <n0nb@...> wrote:

I guess I am the outlier, I use 640-645 typically unless it's a large
ground pad or joint and then I'll run it up past 700.  I like the lower
temperature as it doesn't burn the tip.  But maybe that was the cheap
Radio Shack iron I had in the '80s that did that...

72, Nate

--

"The optimist proclaims that we live in the best of all
possible worlds.  The pessimist fears this is true."

Web: https://www.n0nb.us
Projects: https://github.com/N0NB
GPG fingerprint: 82D6 4F6B 0E67 CD41 F689 BBA6 FB2C 5130 D55A 8819







Re: Soldering Iron Temperature

 

I guess I am the outlier, I use 640-645 typically unless it's a large
ground pad or joint and then I'll run it up past 700. I like the lower
temperature as it doesn't burn the tip. But maybe that was the cheap
Radio Shack iron I had in the '80s that did that...

72, Nate

--

"The optimist proclaims that we live in the best of all
possible worlds. The pessimist fears this is true."

Web: https://www.n0nb.us
Projects: https://github.com/N0NB
GPG fingerprint: 82D6 4F6B 0E67 CD41 F689 BBA6 FB2C 5130 D55A 8819


Re: Soldering Iron Temperature

Mike D
 

I've always used 665F for lead, and 750F for other alloys.

Mike kd5rjz

On Sat, Nov 21, 2020, 4:21 PM wa4dou@... <wa4dou@...> wrote:
Guys,
8 years as a Sonar technician in the Navy and 39 yrs as a land mobile radio technician before retirement. My choice is 800-825 deg F. That temp gets the job done at each joint quickly.

de Roy WA4DOU



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Re: Soldering Iron Temperature

wa4dou@juno.com
 

Guys,
8 years as a Sonar technician in the Navy and 39 yrs as a land mobile radio technician before retirement. My choice is 800-825 deg F. That temp gets the job done at each joint quickly.

de Roy WA4DOU



____________________________________________________________
Sponsored by https://www.newser.com/?utm_source=part&utm_medium=uol&utm_campaign=rss_taglines_more

Cuomo Is Getting an Emmy &mdash; Governor Cuomo, That Is
http://thirdpartyoffers.juno.com/TGL3131/5fb992d7b485412d73148st01vuc1
Conservatives Have a New Target&mdash;One of Their Own
http://thirdpartyoffers.juno.com/TGL3131/5fb992d7d3bb912d73148st01vuc2
Trump Thought His Sister Had His Back&mdash; She Didn't
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Re: Soldering Iron Temperature

Jim, N5IB
 

Hi Woody,

I use a Weller EC1001 with a small conical tip for both SMD and for conventional thru hole PCBs.
Temp generally set at 700F, using 63/37 multicore rosin flux solder.
Heartily recommend the 63/37 eutectic alloy - lowest melting temp, and passes directly from liquid to solid with no "plastic" phase, so fewer bad joints.
For through-hole work I use 0,025" diameter solder, switching to 0.015" for SMD.

As someone else mentioned, stick to plain rosin flux - avoid "activated rosin" or even "mildly activated rosin"
And "no clean" is a whole 'nother can of worms, as is lead free.

When using rosin core solder a telltale sign of "too hot" is when the flux residue begins to darken to brown.

Kitmakers like 4SQRP almost always use 1 oz copper clad PC boards. Unless the traces are narrower than 0.015" they will survive that 700F iron temperature for the "one mississippi two mississippi" count. If you get past "three mississippi" you're starting to run risks of lifting pads. Whenever I design a PCB for kitting I try to use the largest pad diameters and trace widths I can reasonably get away with. Pads of 0.075" to 0.080" and traces of at least 0.020", with 0.030" or 0.040" when possible. Much less likelihood of lifting a pad or trace, even during rework.

A lot of consumer electronics uses 1/2 oz cladding and very thin traces and tiny pads. If trying to do repairs or mods it's best to reduce the temp to maybe 600 to 650, and try to get in and out in a hurry.

Bumping the temp to 750F generally helps when soldering wires to BNC center posts or to solder lugs on robust parts.

And a small tip and iron like mine is not much good for soldering shield braid to PL259 connectors, regardless of how hot I set it. Just not enough thermal mass to maintain temperature. Break out the monster Weller gun.

73, Keep melting solder!
Jim, N5IB


Re: Soldering Iron Temperature

Jim Sheldon
 

Hi Woody, 
I have mine set to 750 Fahrenheit on a mostly pointed tip with very slight rounding on the end.  Seems to handle just about everything but the really heavy jobs like PL259 shields and the like. For those, I use a larger diameter, “chisel style” tip and set the temp to 800 to 850 F.

Jim, W0EB


On Nov 21, 2020, at 2:11 PM, Woody Hester via groups.io <fghester@...> wrote:

Questions for experienced builders who have a soldering station that allows the temperature of the tip to be adjusted.

For normal kit building, what  temperature do you generally use? (Fahrenheit please).

Are there specific tasks during the build when you increase, or decrease the temperature?  If so, in just a few words, what are they?

How hard, or easy is it to damage certain components or even the board if too hot? ...and what is too hot?

If your answers are reasonably short and would be of interest to others answer on list.  Also feel free to "Elmer me" off list.  I recently burned through a trace on a board that wasn't visible.  It was a challenge to isolate and fix the problem.... so, I need to learn.  Thanks / Woody / WD9F


Re: Soldering Iron Temperature

Paul Goemans
 

Hi Woody!
  I use (and we used in the electronics repair shop I worked in for 41 years) 700 degrees F. If you have a 40 or 50 watt iron, it’s all you need. Don’t mess with the temperature. You won’t wreck the board or parts.
  If you are using RoHs compliant silver-bearing solder then I think 750 degrees F. Someone please check me on this?
 
Paul Goemans WA9PWP
Stoughton, WI
 

From: Woody Hester via groups.io
Sent: Saturday, November 21, 2020 2:11 PM
To: main@4SQRP.groups.io
Subject: [4SQRP] Soldering Iron Temperature
 
Questions for experienced builders who have a soldering station that allows the temperature of the tip to be adjusted.

For normal kit building, what  temperature do you generally use? (Fahrenheit please).

Are there specific tasks during the build when you increase, or decrease the temperature?  If so, in just a few words, what are they?

How hard, or easy is it to damage certain components or even the board if too hot? ...and what is too hot?

If your answers are reasonably short and would be of interest to others answer on list.  Also feel free to "Elmer me" off list.  I recently burned through a trace on a board that wasn't visible.  It was a challenge to isolate and fix the problem.... so, I need to learn.  Thanks / Woody / WD9F


Re: Soldering Iron Temperature

Dave NZ1J
 

For a long time, I used 700 degrees for just about everything.  Lately, I find myself inching up toward 800 degrees.  Also, I only use Kester rosin core solder.  I've worked at companies that have switched to 'no clean' flux and more recently lead free solder.  That's okay for them, but I'll stick with good quality rosin core solder at home.
 
Dave NZ1J

---------- Original Message ----------
From: "Woody Hester via groups.io" <fghester@...>
To: main@4SQRP.groups.io
Subject: [4SQRP] Soldering Iron Temperature
Date: Sat, 21 Nov 2020 12:11:02 -0800

Questions for experienced builders who have a soldering station that allows the temperature of the tip to be adjusted.

For normal kit building, what  temperature do you generally use? (Fahrenheit please).

Are there specific tasks during the build when you increase, or decrease the temperature?  If so, in just a few words, what are they?

How hard, or easy is it to damage certain components or even the board if too hot? ...and what is too hot?

If your answers are reasonably short and would be of interest to others answer on list.  Also feel free to "Elmer me" off list.  I recently burned through a trace on a board that wasn't visible.  It was a challenge to isolate and fix the problem.... so, I need to learn.  Thanks / Woody / WD9F



____________________________________________________________

Top News - Sponsored By Newser


Soldering Iron Temperature

Woody Hester
 

Questions for experienced builders who have a soldering station that allows the temperature of the tip to be adjusted.

For normal kit building, what  temperature do you generally use? (Fahrenheit please).

Are there specific tasks during the build when you increase, or decrease the temperature?  If so, in just a few words, what are they?

How hard, or easy is it to damage certain components or even the board if too hot? ...and what is too hot?

If your answers are reasonably short and would be of interest to others answer on list.  Also feel free to "Elmer me" off list.  I recently burned through a trace on a board that wasn't visible.  It was a challenge to isolate and fix the problem.... so, I need to learn.  Thanks / Woody / WD9F


Re: 60 Meter crystals needed

 

Bobby,

I am not familiar with the GW3UEP, but would like to learn more about it and where to get the kit.  I have been thinking of modifying a 40 or 80 meter Pixie to work on 60 meters.  But I would prefer a dedicated 60 meter kit, as I am more of an appliance operator rather than a circuit designer, thus I suspect a circuit modified by me would be a sub-standard piece of gear.

Once I get a 60 meter unit up and running I would gladly set up a sked.  At this time, I am ordering 60 meter crystals from Bomar Crystal (sales@...).  They custom make HC49/U crystals.

EuGene Smith
KA5NLY/QRPp


On Saturday, November 21, 2020, 1:35:56 AM CST, Bobby Drummond <alphak4ja@...> wrote:


EuGene:

Curious here.  Did you build one of the GW3UEP 60 meter transmitters?  I just finished one and it works great.  It puts out around 5 watts output when powered with 12 volts DC.

If you did build one, contact me via email.  I would like to set up a schedule to work you on 60 meters, homebrew to homebrew.

AK4JA

On Fri, Nov 20, 2020 at 3:39 PM bigusmith via groups.io <bigusmith=yahoo.com@groups.io> wrote:
I messed up on my posting...I have channels 4 & 5 (bought 'em from 3rd Planet Solar)...it is channels 1, 2, & 3 that I need.  If I find a source for them I will post it on here (and on other groups where I have asked about such crystals.

On Friday, November 20, 2020, 5:42:33 AM CST, Bobby Drummond <alphak4ja@...> wrote:


Eugene:

Here is a USA source of crystals for two of the 60 meter channels:


This is the location for KC9ON's 3rd Planet Solar site.  He has crystals for "channel 4" and "channel 5"   I have ordered those crystals (and other crystals from him) and the quality is great and his service is excellent.

I am not aware of anyone that has crystals for channel 1, channel 2 or channel 3 for the 60 meter band at this time.  If you have a source for those crystals, would you please let me know?  I would be interested in getting some.

--
73 de AK4JA



--
73 de AK4JA


Re: 60 Meter crystals needed

Bobby Drummond
 

EuGene:

Curious here.  Did you build one of the GW3UEP 60 meter transmitters?  I just finished one and it works great.  It puts out around 5 watts output when powered with 12 volts DC.

If you did build one, contact me via email.  I would like to set up a schedule to work you on 60 meters, homebrew to homebrew.

AK4JA

On Fri, Nov 20, 2020 at 3:39 PM bigusmith via groups.io <bigusmith=yahoo.com@groups.io> wrote:
I messed up on my posting...I have channels 4 & 5 (bought 'em from 3rd Planet Solar)...it is channels 1, 2, & 3 that I need.  If I find a source for them I will post it on here (and on other groups where I have asked about such crystals.

On Friday, November 20, 2020, 5:42:33 AM CST, Bobby Drummond <alphak4ja@...> wrote:


Eugene:

Here is a USA source of crystals for two of the 60 meter channels:


This is the location for KC9ON's 3rd Planet Solar site.  He has crystals for "channel 4" and "channel 5"   I have ordered those crystals (and other crystals from him) and the quality is great and his service is excellent.

I am not aware of anyone that has crystals for channel 1, channel 2 or channel 3 for the 60 meter band at this time.  If you have a source for those crystals, would you please let me know?  I would be interested in getting some.

--
73 de AK4JA



--
73 de AK4JA


Re: 60 Meter crystals needed

 

I messed up on my posting...I have channels 4 & 5 (bought 'em from 3rd Planet Solar)...it is channels 1, 2, & 3 that I need.  If I find a source for them I will post it on here (and on other groups where I have asked about such crystals.

On Friday, November 20, 2020, 5:42:33 AM CST, Bobby Drummond <alphak4ja@...> wrote:


Eugene:

Here is a USA source of crystals for two of the 60 meter channels:


This is the location for KC9ON's 3rd Planet Solar site.  He has crystals for "channel 4" and "channel 5"   I have ordered those crystals (and other crystals from him) and the quality is great and his service is excellent.

I am not aware of anyone that has crystals for channel 1, channel 2 or channel 3 for the 60 meter band at this time.  If you have a source for those crystals, would you please let me know?  I would be interested in getting some.

--
73 de AK4JA


Re: [ADV] Re: [4SQRP] November Edition of the QRP Banner

WA0ITP
 

GM Keith
I just read the newsletter and will add my congratulations also.   Great piece of work - thank you very much.  I see others have noticed your work and have recommended it to their clubs.  Great compliment.  Thank You !


On Thu, Nov 19, 2020 at 11:59 AM Keith Arns via groups.io <kc0pp=yahoo.com@groups.io> wrote:
Thanks for the compliment Jack.  It mostly has to do with the great contributors that make it a success.

Regards,
Keith
KC0PP



--


Re: 60 Meter crystals needed

Bobby Drummond
 

Eugene:

Here is a USA source of crystals for two of the 60 meter channels:


This is the location for KC9ON's 3rd Planet Solar site.  He has crystals for "channel 4" and "channel 5"   I have ordered those crystals (and other crystals from him) and the quality is great and his service is excellent.

I am not aware of anyone that has crystals for channel 1, channel 2 or channel 3 for the 60 meter band at this time.  If you have a source for those crystals, would you please let me know?  I would be interested in getting some.

--
73 de AK4JA


Re: 60 Meter crystals needed

Paul AI4EE
 

Have you considered QRP Labs' ProgRock?


On 11/19/2020 8:02 PM, bigusmith via groups.io wrote:
I need three HC49 type crystals for the 60 Meter Amateur band.  The ones I am seeking are for channel 3 (5358.5 MHz), channel 4 (5373 MHz) & Channel 5 (5405 MHz).  They can be either the short HC49 S or the tall HC49 U, although I would prefer the tall ones...I will take whatever I can get.  I have the first 2 channels and just want to get the remaining 3 channels.

EuGene Smith, KA5NLY


60 Meter crystals needed

 

I need three HC49 type crystals for the 60 Meter Amateur band.  The ones I am seeking are for channel 3 (5358.5 MHz), channel 4 (5373 MHz) & Channel 5 (5405 MHz).  They can be either the short HC49 S or the tall HC49 U, although I would prefer the tall ones...I will take whatever I can get.  I have the first 2 channels and just want to get the remaining 3 channels.

EuGene Smith, KA5NLY


Re: November Edition of the QRP Banner

Walter - K5EST
 

Absolutely perfect production,  thank you Keith AND thanks to all the contributions from the authors that keeps Keith supplied with great articles.

73,

Walter Dufrain - K5EST - QRPcw
https://www.qrz.com/db/k5est
   

On Wed, Nov 18, 2020, 20:23 Keith Arns via groups.io <kc0pp=yahoo.com@groups.io> wrote:
The November QRP Banner is now up on the website.  Hope you enjoy.

Regards,
Keith
KC0PP
QRP Banner Editor

http://www.4sqrp.com/4sqrpNewsLetter/202011.pdf


Re: [ADV] Re: [4SQRP] November Edition of the QRP Banner

Keith Arns
 

Thanks for the compliment Jack.  It mostly has to do with the great contributors that make it a success.

Regards,
Keith
KC0PP

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