Gold Plating vs. Immersion Gold for PCBs

Gold plating and immersion gold are two common methods used in PCB fabrication. Gold plating involves depositing a thin layer of gold onto the surface of a metal, providing strong adhesion and durability. On the other hand, immersion gold uses a chemical reaction to attach gold particles to the PCB, offering advantages like easier soldering and better stress control.

Gold Plating:

• Gold plating provides hard gold for strong adhesion.
• Gold fingers on memory modules are made of hard gold for increased durability.

Immersion Gold:

• Immersion gold offers soft gold with weaker adhesion.
• Only the pads are coated with nickel-gold, preserving signal integrity within the copper layer.
• Immersion gold is less prone to oxidation, providing long-term reliability.

Advantages of Immersion Gold:

Immersion gold technology provides easier soldering, better stress control, and improved signal integrity. It is a reliable alternative to traditional gold plating for PCBs.

If you have any inquiries about PCBs or PCBA, please don’t hesitate to reach out to us at info@wellcircuits.com.