In the early 20th century, Albert Hanson pioneered layered conductive paths, a precursor to PCBs. This innovation led to wave soldering in the 1950s, automating PCB assembly for through-hole components and enabling mass production of electronics. Later, reflow soldering advanced precision for surface-mount technology, supporting miniaturization and complexity. Today, both methods are essential to electronics manufacturing, underscoring Hanson’s lasting impact. #WaveSoldering #ReflowSoldering