ENIG PCB - Electroless Nickel Immersion Gold PCB

ENIG PCB means Electroless Nickel Immersion Gold PCB

Some customers ask us why PCB finishing need nickel when they decide to do PCB surface as gold.Best Tech think lots of PCB  Practitioner don't understand or cannot explain clearly,but PCB designers and electronic company should know more information about PCB ENIG,so we offer some skill information for anyone who would like.But don't hesitate to contact us if you would like to know more.

• plating nickel is to protect base copper as the base copper is very easy oxidation
• The weldability of nickel is better than gold,and more stable
• If to plate gold on the copper,the coper ions will migrate to the gold surface，Cause the mottled oxidation，Affect both the function and appearance

Pls see the ENIG structure as blow which can help you know ENIG PCB more clearly

Follow is a thumbnail of ENIG PCB and its details, but you can click for ENIG PCB HDMI picture.

• Layer: 2 layeres
• PCB material:FR4 TG170
• Thickness of board:0.78 mm +/- 10%
• Copper: 1OZ
• Soldermask: Blue
• Silkscreen: Yellow

List some others PCB surface finishing for your information.

• HASL & HASL (LF) PCB
• ENIG PCB
• OSP PCB
• Immersion Silver PCB
• Immersion Tin PCB

If you would like to know more PCB surface finishing or suggest,don't hesitate to contact us.