What does electroless nickel immersion gold mean?
Definitions for electroless nickel immersion gold
elec·tro·less nickel im·mer·sion gold
This dictionary definitions page includes all the possible meanings, example usage and translations of the word electroless nickel immersion gold.
Wikidata
Electroless nickel immersion gold
Electroless nickel immersion gold is a type of surface plating used for printed circuit boards. It consists of an electroless nickel plating covered with a thin layer of immersion gold, which protects the nickel from oxidation. ENIG has several advantages over more conventional surface platings such as HASL, including excellent surface planarity, good oxidation resistance, and usability for untreated contact surfaces such as membrane switches and contact points. Early ENIG processes suffered from reliability issues which caused the ENIG finish to separate from the copper pads, taking the parts with them. ENIG also does not wet as evenly or easily as HASL. ENIG is a costlier finish, but offers the best characteristics for printed circuit boards. The process requires the most steps compared to other common finishing types. The electroless nickel step is an auto-catalytic process that involves depositing nickel on the palladium-catalyzed copper surface. The reducing agent containing nickel ions must be replenished in order to provide proper concentration, temperature and pH levels necessary to create a consistent coating. During the immersion gold step, the gold adheres to the nickel plated areas through molecular exchange, which will protect the nickel until the soldering process. The gold thickness needs to meet certain tolerances to ensure that the nickel maintains its solderability.
Numerology
Chaldean Numerology
The numerical value of electroless nickel immersion gold in Chaldean Numerology is: 3
Pythagorean Numerology
The numerical value of electroless nickel immersion gold in Pythagorean Numerology is: 7
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"electroless nickel immersion gold." Definitions.net. STANDS4 LLC, 2024. Web. 27 Apr. 2024. <https://www.definitions.net/definition/electroless+nickel+immersion+gold>.
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