Search results
Results from the WOW.Com Content Network
Electroless nickel immersion gold (ENIG or ENi/IAu), also known as immersion gold (Au), chemical Ni/Au or soft gold, is a metal plating process used in the manufacture of printed circuit boards (PCBs), to avoid oxidation and improve the solderability of copper contacts and plated through-holes.
Immersion silver plating (or IAg plating) is a surface plating process that creates a thin layer of silver over copper objects. It consists in dipping the object briefly into a solution containing silver ions.
Board finishes vs wave soldering bath impurities buildup: HASL, lead-free (Hot Air Level): usually virtually pure tin. Does not contaminate high-tin baths. HASL, leaded: some lead dissolves into the bath; ENIG (Electroless Nickel Immersion Gold): typically 100-200 microinches of nickel with 3-5 microinches of gold on top.
Subtractive methods remove copper from an entirely copper-coated board to leave only the desired copper pattern. The simplest method, used for small-scale production and often by hobbyists, is immersion etching, in which the board is submerged in etching solution such as ferric chloride. Compared with methods used for mass production, the ...
Gold and silver are both precious metal assets worth investing in, but one could be a better bet right now. / Credit: Getty Images/iStockphoto Until recently, inflation had been high in the U.S.
Gold vs. silver: Inflation hedge. Gold is often touted as an inflation hedge, helping to protect investors from rising inflation. So when markets get rough, many investors flee to gold to ride out ...
The gold is typically applied by quick immersion in a solution containing gold salts. This process is known in the industry as electroless nickel immersion gold (ENIG). A variant of this process adds a thin layer of electroless palladium over the nickel, a process known by the acronym ENEPIG. [19]
AOL Mail welcomes Verizon customers to our safe and delightful email experience!