Basic knowledge of terminal plating

One metal often cannot meet all the mechanical, electrical and cost requirements of a connector. Plating of the terminal allows the manufacturer to use the best metal for the crimp and then cover that metal with a thin layer of another metal. Electroplating is a kind of metal electrode-position process, which refers to the process in which simple metal ions or complex ions are discharged and reduced to metal atoms on the surface of a solid (conductor or semiconductor) by electrochemical methods, and adhere to the electrode surface to obtain a metal layer.

Advantages of Plating: 1.Corrosion Resistance 2.Better Electrical Properties 3. Durability 4.Solderability 5. High Temperature Protection

Plating material advantages:

Tin Advantages	Gold Advantages	Nickel Advantages	Silver Advantages
1.Comprehensive, excellent terminal finish	1.Excellent corrosion resistance	1.Improve adhesion and solderability	1.Easy to polish
2.Themost widely used in coating materials	2.Good ductility, easy polishing, high temperature resistance,and good anti-tarnish performance	2.Electroplated nickel layer has high stability in air	2.Strong reflective ability
3. Low cost	3. Excellent solderability	3.Anti-oxidation	3.Strong chemical stability
4. Excellent electrical conductivity and solderability	4.Low contact resistance, good electrical conductivity, easy to weld	4.Minimize adverse reactions between host metal and coating metal	4.Good thermal conductivity, electrical conductivity, welding performance
5.Silver-white metal, non-toxic	5. Certain wear resistance.		5. Cheaper than gold plating

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