These instructions will help you familiarize yourself with the initial difficulty of soldering surface mount components. By the time you have finished, you will be able to solder components with pins with.5mm spacing.

• Smt Soldering Methods

Tools and Supplies 1. X1 soldering iron (digital or analog) 2. PCB(Printed Circuit Board) with available pads 3. SMD (Surface Mount Device) component that matches the available pad 4.

Thugs of hindostan whistle ringtone download. Solder (recommend water soluble, rosin core acceptable) 5. Desoldering braid 6.

Flux w/ applicator 7. Rubbing alcohol (rosin core solder) OR 9. Water (for water soluble solder) 10. Anti-static cloth. Keep one hand still, holding the component in place with the tweezers. By now, the soldering iron should be hot. Get a small to medium sized dot of solder on the tip.

Pick any corner pin on the component 4. Touch and hold the soldering iron to the pad that will be associated with that pin. If you have done this correctly, the solder should have transferred from the pad on the circuit board to the component pin, it does not matter if you have connected excess pins, this will be fixed later.

Smt Soldering Methods

There are 2 purposes for flux in soldering: to prevent beading of the solder, and help the solder flow from the soldering iron to the circuit board. Flux will be used on this board to limit the amount of bridged connections made, and generally make the job easier. This substance is messy, so be sure to use an applicator. (toothpick, brush, etc.) In this case, I have used a metal tip.

Get a large amount of flux on the applicator. Spread the flux over the pins on the opposite side of the component that was tacked down in the previous step. It is fairly common that while preforming the previous step, a solder bridge will develop. A solder bridge might look something like the picture below. These steps will also work for removing the component from the board.

Take the desoldering wick and place it over the solder you want to remove. With the soldering iron, lightly press on the wick, to ensure the heat is transferred through to the solder. Warning: Remember that heat removes solder, not pressure. Too much pressure applied could remove the pad or pin on the component, ruining the component or board. I don't know, if you have to be told to 'pick up the soldering iron in one hand, and the solder in the other' then you may not be ready to try soldering surface mounted components, but if so, then here are a few clarifications.

In step 2 you are told you need to find pin 1 but not really how. On most IC's there will be one corner of the case that is cut out. If you look close at the image you can see it on that IC. The corresponding pin on that corner is pin 1.

But usually there is also an outline on the PCB showing the placement, which can also be seen. Just put the cut out corner where shown on the PCB. In some instances there is a dot on the IC case marking pin 1. That dot is the same as the cut out corner.