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Author Topic: Removing tiny SMD resistors  (Read 15061 times)

omgphil

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Removing tiny SMD resistors
« on: October 02, 2007, 10:12:36 PM »
You know the tiny square ones?


I want to replace one with a pot but it's so damn fiddly, it won't come out, and I can't even cut it in half and prise it out D:

Any techniques?


I got a heart shaped necklace with a record/playback function from Poundland t'other day and I'm gunna rehouse 2-3 of them and make a mini super-lofi sampler with pitch control. It's an ambitious project for me but it should be good.
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Circuitbenders

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Re: Removing tiny SMD resistors
« Reply #1 on: October 02, 2007, 10:18:38 PM »

From another thread.

Quote from: catweazle on August 24, 2007, 12:44:39 PM
I think you mean SMD (surface mount devices)



SMD resistors and capacitors (resistors have numbers on them , capacitors not) can easyly desoldered by alternately heating each side for a short time (about 1second each side) with your soldering iron. After a few cycles (heating left, heating right) the part will left the circuitboard (PCB).

 
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i am not paid to listen to this drivel, you are a terminal fool

omgphil

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Re: Removing tiny SMD resistors
« Reply #2 on: October 02, 2007, 10:31:33 PM »
Really thanks, that will be useful.

I guess I'lll use the search function next time :X.


Anyone else done a project like this? I'd like to see, for inspiration.
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soflaed

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Re: Removing tiny SMD resistors
« Reply #3 on: November 16, 2007, 02:41:26 AM »
After removing,how do you solder onto such a small area? starts melting the board.
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octatone

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Re: Removing tiny SMD resistors
« Reply #4 on: November 16, 2007, 04:45:56 PM »
SMD = Hell.  Avoid at all costs.

Use a low watt iron, low temp, and work with a magnifying glass.  Oh and take a few shots of whiskey to calm the hands.
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catweazle

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Re: Removing tiny SMD resistors
« Reply #5 on: November 16, 2007, 09:16:10 PM »
If you do your own PCBs you will love SMD, more space (you can use two layers of components)
and the best: you don't need to drill so f**in lots and lots of holes ;)

Don't panic, SMD soldering isn't that complicated, you need a fine good tweezers and
a fine soldering iron, you don't need a SMD Soldering iron. I think on the net you'll find
good tutorials and how to's about SMD soldering,

Soldering a new part on a desoldered one is not much stress. Take the part with the
tweezers and lay it on the pads and hold the part while soldering both ends.
Caution if you solder a smd resistor for example you will see the "thumb stone effect" the part stands up on the
side were you solder - thats why you have to hold it with tweezers.
Take a old pcb and make some excersices, you will see its not mysterious and a big deal,

You can desolder SMD parts real easy with two soldering irons (if you have two)
Heating both ends simultaniously (really really fast method)

 
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