If you work with printed circuit boards or the PCBA industry, then you have probably heard of Immersion White Tin, but may have questions about how it actually works and whether it's a process that you should care about.
Given that we are leaders in Immersion White Tin PCB fabrication here at Omni, it goes without saying that we are heavily in favor of its use.
To understand why, you first have to understand the reason behind our preference for white tin in the first place.
Traditionally, printed circuit boards have been finished with a coating of material to protect them from oxidation and allow for components to be soldered onto them in a reliable consistent way, this is usually specified to as "PCB Finish" and requires the use of Lead (HASL) and vast amounts of water during processing (All other PCB finish types).