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SMDs

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Thread replies: 16
Thread images: 6

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Hey guys, I'm starting my first project using SMDs. I don't have/want to buy an expensive iron with a needle point. I've seen some guys using copper wire wrapped around their iron tip with the wire filed to a point. Any suggestions/advice?
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>>940544
More info. What parts? footprints? Masked PCB? What iron do you have?
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>>940557
Sorry, should have been more specific. It's for an oscilloscope kit I bought. They're 0805 resistors, and two ICs with a bit more space. Pics attached! Thanks
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>>940557
Also I have a 30W RadioShack iron. I lost my weller!
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>>940544
>I don't have/want to buy an expensive iron with a needle point.

I've soldered a lot of SOP ICs with an $18 GAOJIE iron. If an Iron is under $10 it's probably garbage that will melt its own handle, but everything I've used in the $20 range is fine.

A soldering iron with a needle tip shouldn't cost more than a soldering iron with a chisel tip. The different tips that fit a model of soldering iron usually cost the same. A good store will let you pick the iron and tip separately instead of forcing you to buy an iron with a tip you don't want.

The difference between a $100 and $20 iron is higher wattage and better temperature regulation. You don't need high wattage to solder SMDs. Temperature regulation is nice, but not a must have.
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>>940563
Component below the "a" in RadioShack for size
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>>940565
Thanks! I looked at trying to buy a chisel or bent tip for my iron, but nothing fits. It's an off-the-shelf RadioShack deal. It seems like a lot of the websites don't offer irons with interchangeable tips for less than $150. Do you have a recommended site?
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>>940568
Every soldering iron I've ever seen has an interchangeable tip. The websites you're looking at probably aren't listing it as a feature because it's so ubiquitous.
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Needle point iron tips are pretty bad for soldering. I have a sharp needle tip, but I use it very rarely, usually for fixing a hard to reach joints.
Pretty much everything can be done with a chisel tip.
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>>940761
Even for these size SMD components?
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>>940563
you should be able to hand solder 0805s with a standard iron without too much trouble.
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>>940565
what program did you use to design that board? I like the minimal removal of copper.
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>>941026
especially SMD components. Large tips provide a greater surface tension of the solder that's melted on the tip, meaning that you can just drag a chisel tip along an SMD IC package and the solder will adhere to the pins and separate well purely due to surface tension. Check this video out: https://www.youtube.com/watch?v=wUyetZ5RtPs
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>>942576
I use Eagle, but I draw the lines I want my CNC machine to cut away instead of how it's supposed to be used.
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>>942576
It came as a kit, sorry!
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>>942581
Thanks!!
Thread posts: 16
Thread images: 6


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