Through-Hole Technology is a method used in electronics to mount components on a printed circuit board (PCB). In this technique, components have leads that pass through holes in the PCB and are soldered on the opposite side. This provides strong mechanical support and is ideal for components that require durability. This technology is commonly used for larger components, such as resistors, capacitors, and integrated circuits. While it is effective, it is less suitable for high-density applications compared to Surface-Mount Technology (SMT), which allows for smaller components to be placed directly on the surface of the PCB.