OSP is definitely the abbreviation for Organic and natural Solderability Preservatives, generally known as bare copper, Entek. simply put, OSP is really an natural and organic skin film that grows chemically over a clear bare copper area. This movie is immune to oxidation, thermal shock and humidity and guards the https://metal-pcb-copper-based-bo26048.blogripley.com/31665220/the-fact-about-10-layer-5g-communication-pcb-that-no-one-is-suggesting