SMD Hand Soldering

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SMD, surface mount device soldering, SMT surface mount technology soldering, SMD and SMT hand soldering techniques tutorial, SMD solder example ... end of search terms.

SMD Soldering Techniques

Soldering SMD parts by hand is not too much fun, unless you get the tricks to do it right.

This Video and Pics will show how to hand-solder simple SMD resistors and capacitors, basically 2-pad parts.
The trick is that we have 2 hands and should use them with 2 soldering irons where necessary.

A short video clip showing 2-pad part hand-soldering.

Please take the 2 minutes to watch the short video clip above, then the pics below will be more explanatory than without.

Here are the steps it takes to successfully solder 2-pad parts by hand.

  1. Put some water soluble organic solder-flux liquid (i.e. Kester 2331, used with 331 water soluble organic cored soldering wire, look for ROHS it also exists with similar water soluble flux) on the area for the parts to be soldered ... this will assist in the solder to flow real liquidy.
  2. Put small drops of solder onto both solder patterns.
    EfiO2Meter SMD Pics0.jpg

  3. Place the 2-pad part roughly onto the place to be soldered on ... roughly, since the 2 solder irons will finally move it into place
    EfiO2Meter SMD Pics1.jpg

  4. Wet the place one more time with a few drops of the water soluble flux.
    EfiO2Meter SMD Pics2.jpg

  5. Now use 2 soldering irons and move the part roughly into place ... the surface tension of the molten solder will straighten out and align the part automatically
    EfiO2Meter SMD Pics3.jpg

  6. Wash the flux with normal water and blow excess water off the board or dry it with a procedure of your desire.
  7. Use also 2 solder irons to remove the part if necessary
  8. Wet the solder pad area with water soluble flux for re-soldering and repeat
  9. If you want to clean a pad from solder, wet the pads with the water soluble flux before applying the cleaning action with the solder wick ... it keeps the solder real liquidy and the wick can sponge it all up.

Next we will show how to solder fine pitch parts successfully with a normal sized solder iron ... we just need to drive over there and take another video.

We learned this and more from our buddies and the wonderful PCB assembly ladies at AES, Automated Electronics Services in Fremont Ca.



Note : All published design documentation is Copyright efiLabs.com and its use is without exception FOR NON COMMERCIAL PURPOSE ONLY. For commercial licenses contact efilabs.com ... try us, we're reasonable :)

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