Solderability testing provides a means of determining the solderability of device package terminations that are intended to be joined to another surface using SnPb or Pb-free solder. ... This method includes pre-conditioning if applicable, the application of flux, and the immersion of the terminations into molten solder.

When would you use a solderability test?

Solderability testing is a critical part of PCB functional testing, and it's important to do prior to finalizing assembly. When the metal doesn't solder during the test, it shows there are weaknesses that will affect the function of the PCB. Then your PCB is at risk for solder oxidation and other ugly issues.

What is a wetting balance test?

The wetting balance test is used to measure the wetting forces between molten solder and the test surfaces as a function of time. Solderable surface differ in speed and strength of adhesion. The wetting balance measures the time for the solder to wet the component termination or pad.