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Temp. vs. wattage in soldering. Which do I need?
Temp. vs. wattage in soldering. Which do I need?
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Old 6th July 2019, 02:47 PM   #31
MilanAudio is offline MilanAudio  Czech Republic
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I'm having 320c temperature for soldering everything. It is fast, 2-4 seconds. I'm leaving long pins/wires, so temperature quickly drop down, then I will cut them.

I'm using this: YIHUA 908D Soldering Iron Temperature Adjustable Electric Welding Soldering Iron

I have it more than a year, works perfectly.

Last edited by MilanAudio; 6th July 2019 at 02:59 PM.
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Old 6th July 2019, 10:06 PM   #32
DualTriode is online now DualTriode  United States
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Temp. vs. wattage in soldering. Which do I need?

Both plus enough mass to to transfer heat into the parts to be soldered.

A little teeny tiny needle tip will never solder a heatsink to a PCB no matter hot or how many watts.
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Old 7th July 2019, 12:06 AM   #33
wiseoldtech is offline wiseoldtech  United States
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Quote:
Originally Posted by DualTriode View Post
Temp. vs. wattage in soldering. Which do I need?

Both plus enough mass to to transfer heat into the parts to be soldered.

A little teeny tiny needle tip will never solder a heatsink to a PCB no matter hot or how many watts.

The thing you need to undestand is....
There are different types of soldering irons and stations.
And, depending on the job, it would require a specific type of iron.
So, in order to be properly equipped, one must have several on hand.


Soldering directly to a steel radio or tube amp chassis would require a 100 watt iron with a sizable 1/4" or larger tip.
But soldering an IC on a pc board would only need a 25-35 watt station.
Larger components may need maybe 60 watts, and a larger tip.
Thus, a vari-temp iron would be the choice there.



There are no "one size fits all" irons.
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Old 7th July 2019, 05:47 PM   #34
ruairi is offline ruairi
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I haven't read the thread but when I see the OP's question all that comes to mind is Metcal.

Once I got mine I stopped thinking about all of that stuff. Solder an 0201 part (which I did just last week to repair my laptop) and then solder a penny to a chassis, all without thinking about any settings, just change tip and go.
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Old 7th July 2019, 10:47 PM   #35
lgreen is offline lgreen  United States
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Quote:
Originally Posted by ruairi View Post
I haven't read the thread but when I see the OP's question all that comes to mind is Metcal.
Thermaltronics is similar to Metcal, I think both spun off from the same company originally. These are different and newer technologies. You should read about them if you are able.

Thermaltronics TMT-2000S-PM Soldering System w/SHP-PM 100-240VAC interchangeable for Metcal MFR-1110 - - Amazon.com

I think I have this one. While they say these "instantly" heat up, it takes a few seconds. It is pretty slick technology and works well.

Sorry have not heard of Goot.

I think its the temperature not the wattage, unless you have something big to solder, then its both plus size of tip (use a big one).
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Last edited by lgreen; 7th July 2019 at 10:52 PM.
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Old 9th July 2019, 06:09 PM   #36
RE 604 is offline RE 604  Germany
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Hello ,
after 40 years with Weller , I use now this one :

JBC CD-2BQE Soldering Station !!Special Offer!!

Kind regards , Alexander .
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Old 22nd July 2019, 08:19 AM   #37
Jazid is offline Jazid  United Kingdom
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Quote:
Originally Posted by lgreen View Post
Thermaltronics is similar to Metcal, I think both spun off from the same company originally. These are different and newer technologies. You should read about them if you are able.

Thermaltronics TMT-2000S-PM Soldering System w/SHP-PM 100-240VAC interchangeable for Metcal MFR-1110 - - Amazon.com

I think I have this one. While they say these "instantly" heat up, it takes a few seconds. It is pretty slick technology and works well.

Sorry have not heard of Goot.

I think its the temperature not the wattage, unless you have something big to solder, then its both plus size of tip (use a big one).
A small warning. I have found Thermaltronics tips are sold as cheaper alternatives, physically identical to Metcal and slot in OK, but are not accepted by my Metcal system which refuses to heat them. I just bought Metcal tips and moved on.

I have not used a proper Weller, but rather a slew of cheap soldering irons and stations before taking the plunge with a second hand Metcal. My goodness I'd never, ever, go back!

The near instant warm up is a time saver when changing tips (it's a ten second job to swap tips and be at working temperature again), what's fab is the instant heat delivery right at the tip. Even tiny smt tips can solder way above their size, whilst my 1/4" chisel solders really beefy material. It speeds up the soldering process, an absence of questionable joints, and presumably that suggests less stress being placed on components?
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Old 23rd July 2019, 05:43 AM   #38
stratus46 is offline stratus46  United States
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Quote:
Originally Posted by DualTriode View Post
Temp. vs. wattage in soldering. Which do I need?

Both plus enough mass to to transfer heat into the parts to be soldered.

A little teeny tiny needle tip will never solder a heatsink to a PCB no matter hot or how many watts.
I'll say it again. Try a Metcal and you will not go back. I HAVE soldered a heatsink to a PC using a 'teensy' tip, specifically an STTC-126 like this

STTC Soldering Cartridge, Conical

That tip is excellent for clearing solder out of the holes in a PCB and if you ever tried on a motherboard with no thermal relief in the board, you would get it.

I used a tip like that to re-install a PEM on a broadcast VTR that had been pressed into a light gauge steel chassis but was carelessly popped out by another tech. When the older melts on the other side of the steel you know it's hot enough. At the time that was a $110,000 dollar machine so you really don't want to bung it up.

For either of those tasks a Weller would not have done the job. I would like to try a JBC iron as I have heard good things about them but you don't find used ones on eBay and I really don't want to drop $500 just to try one.

G
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