Soldering terminology

Clearance during soldering usually refers to the distance between the pin of a component and the wall of a borehole in the mounting through-hole. Also, clearance may represent the thickness of a hard solder with brazed joints . Just as the thickness of the layer of adhesive affects the strength of an adhesive bond, too great a clearance may reduce the quality of the solder joint. This relationship is illustrated in the picture: if the distance is sufficiently small , the shear strength of the connection significantly exceeds the strength of the filler materials.