A through hole is any hole that passes through something, whether it is milled or drilled using hand tools or sophisticated machinery. The most common type is the plated hole that is used in printed circuit board (PCB) manufacturing. Plating the hole makes it easier for electrical signals to be transmitted along the PCB, but a through hole does not have to be plated if it is going to be used for mounting other hardware.
These holes are used for installing various components onto a circuit board, such as capacitors or any type of component that is inserted with pins. The ends of these parts are joined to pads on the PCB’s bottom side during the through hole soldering process, which is a molten metal solder procedure that involves the use of wave soldering or reflow solderingequipment. This type of mounting is beneficial because the resulting mechanical bonds are stronger than with other techniques, such as surface mounting.
