Immersion Gold ENIG Rohs HDI Multilayer PCB 16 Layer For Electronic Product

16 Layer Immersion Gold HDI PCB for Electronic Product

♦ What is Immersion Gold?

​​Immersion Gold​​ (also known as ​​ENIG – Electroless Nickel Immersion Gold​​) is a ​​surface finish​​ applied to ​​printed circuit boards (PCBs)​​ to protect exposed copper pads and ensure reliable solder connections. It consists of two layers:

1. 1. ​​Electroless Nickel (Ni)​​ – A thin (3–6µm) nickel-phosphorus layer deposited chemically (without electricity) to act as a barrier, preventing copper diffusion.
   2. ​​Immersion Gold (Au)​​ – A very thin (0.05–0.1µm) gold layer plated over the nickel to prevent oxidation and enhance solderability.

♦ ​​Key Characteristics of Immersion Gold (ENIG):

✔ ​​Flat Surface​​ – Ideal for fine-pitch components (e.g., BGAs, QFNs).
✔ ​​Excellent Solderability​​ – Ensures strong, reliable solder joints.
✔ ​​Long Shelf Life​​ – Resists oxidation better than bare copper or OSP.
✔ ​​Wire-Bondable​​ – Suitable for gold or aluminum wire bonding (used in IC packaging).
✔ ​​Lead-Free & RoHS Compliant​​ – Environmentally friendly compared to HASL (lead-based).

♦ Comparison with Other PCB Finishes?​

♦ Technical Parameters

DQS Electronic is located in Shenzhen, focusing on PCB Layout Design, PCB Fabrication, Electronic Components Sourcing, SMT, PCB Assembly and Testing. We are a one-stop EMS electronic manufacturing company committed to providing global customers with rapid prototyping and mass production.

Our products include single, double, multi, high frequency, aluminum base, copper base, FR-4 and other high precision circuit boards.

We have over 10 years of experience in serving many domestic and foreign brand customers in a wide range of fields such as Medical, Automotive, Industrial Automation, Artificial Intelligence, Smart Home, Security, Power and Communications, etc..