What is free flow solder?

Free flow solder is a type of solder designed to enhance its fluidity during the melting process, allowing it to easily and uniformly fill joints and gaps in electronic assemblies. It typically contains a combination of metals, such as tin and lead or lead-free alternatives, and is used to improve the reliability and strength of solder connections. Its properties enable better wetting on surfaces, making it particularly useful in wave soldering and reflow soldering processes in electronics manufacturing.