8-LAYER IMMERSION GOLD SOFT AND HARD COMBINATION PCB NO FURTHER A MYSTERY

OSP will be the abbreviation for Natural Solderability Preservatives, also known as bare copper, Entek. simply put, OSP is undoubtedly an natural and organic pores and skin movie that grows chemically with a clean bare copper surface area. This film is resistant to oxidation, thermal shock and humidity and protects the copper surface area from more