Simple Solder Question

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Sprockett
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Simple Solder Question

Post by Sprockett » Wed Jun 01, 2016 7:25 pm

What wattage iron are most people using to solder to the PI?

I have one that does 40 and 20, but 20 doesn't even come close to melting the solder, but that seems like a good choice when soldering to the PI. Is there solder for a lower tempurature?

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murdurturtle
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Re: Simple Solder Question

Post by murdurturtle » Wed Jun 01, 2016 11:13 pm

I'm not really sure what the wattage of mine is.. im using a hakko fx-888d at 650f. its well worth the modest investment if you do a fair amount of soldering.

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Fleder
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Re: Simple Solder Question

Post by Fleder » Thu Jun 02, 2016 12:19 am

Mine has got 48W. You should consider settling around this, so your soldering tip does not get colder if you solder something.
With only 20W, for instance, your tip may drop in temperature if you touch something else and will not be able to melt the solder anymore.

Of course there are exceptions, but this is a good rule of thumb.

Sprockett
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Re: Simple Solder Question

Post by Sprockett » Thu Jun 02, 2016 7:25 am

Fleder wrote:Mine has got 48W. You should consider settling around this, so your soldering tip does not get colder if you solder something.
With only 20W, for instance, your tip may drop in temperature if you touch something else and will not be able to melt the solder anymore.

Of course there are exceptions, but this is a good rule of thumb.
I've been doing 40, my concern was heating up the other parts could damage them, it's hard sometimes to get into those really tight spaces...

Thanks
-Paul-

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Fleder
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Re: Simple Solder Question

Post by Fleder » Thu Jun 02, 2016 7:46 am

Sprockett wrote:I've been doing 40, my concern was heating up the other parts could damage them, it's hard sometimes to get into those really tight spaces...

Thanks
-Paul-
I had the same concerns. But for now, i haven't damaged anything yet.

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wermy
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Re: Simple Solder Question

Post by wermy » Thu Jun 02, 2016 7:46 am

I use 40w. The trick is to work fast so you don't have to leave the iron pressed against anything too long. It seems a little counterintuitive, but a slightly thicker tip on your soldering iron can help with this because there is more surface area to quickly transfer heat to the solder and melt it. I used to be all about super thin/pointy tips, but a while back I tried a little thicker one, and I haven't looked back. :)
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Re: Simple Solder Question

Post by TheMaddModder » Thu Jun 02, 2016 9:01 am

I actually use a 15w iron with an extremely fine tip but that's because I was very new to this when I bought it years ago.

If you are new with soldering I would probably go a little lower until you get used to the process.

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wermy
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Re: Simple Solder Question

Post by wermy » Thu Jun 02, 2016 10:02 am

Moving to Tools section. :)
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Robvp
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Re: Simple Solder Question

Post by Robvp » Mon Jun 06, 2016 9:44 am

I'm using a 30w iron that I had lying around, it does a fine job melting the new solder but can't melt the solder already on the pcbs, I had to use plyers to remove the IC from the LCD controller board

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Ganreizu
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Re: Simple Solder Question

Post by Ganreizu » Mon Jun 06, 2016 9:47 am

Robvp wrote:I'm using a 30w iron that I had lying around, it does a fine job melting the new solder but can't melt the solder already on the pcbs, I had to use plyers to remove the IC from the LCD controller board
You should be able to. I melt applied solder with a 25w iron just fine, did you try adding new solder to it?

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