Preparing for SMT Component Soldering

 
Surface mount pads need to be tinned with solder prior to mounting the component. When this is completed the pads look like this:


However observe what happens if you place a SMT component on soldered pads like these:


and solder one pad...



 

To overcome this problem a technique called Solder Levelling is used and is described on the Soldering SMTs page which also demonstrates the techniques of how to place the SMT components.