ENEPIG Surface Finish for Advanced Wire Bonding & Corrosion Resistance
Designed for high-reliability, high-frequency applications, ENEPIG delivers superior solderability, gold and aluminum wire bond compatibility, and excellent corrosion protection.
ENEPIG (Electroless Nickel Electroless Palladium Immersion Gold) Solutions
At Data Electronic Services (DES), we offer precision ENEPIG surface finishes that meet the demanding needs of advanced electronics. ENEPIG adds a palladium layer between the nickel and gold, enhancing corrosion resistance and preventing nickel diffusion. This makes it ideal for PCBs requiring both aluminum and gold wire bonding—such as in aerospace, telecom, automotive, and medical sectors. Our tightly controlled process ensures layer consistency, solder joint reliability, and extended shelf life.
Why Choose DES?
Precision Plating for Advanced Designs
Gold Wire Bonding Compatibility
Superior Corrosion Resistance
Proven Expertise with Fine-Line PCBs
Upgrade to ENEPIG for High-Reliability and Bonding Flexibility
Key Principles of Effective ENEPIG Surface Finish
Our ENEPIG process ensures every layer—nickel, palladium, and gold—is deposited with precision to deliver the best possible performance for demanding PCB applications.
Electroless Nickel Layer
Forms the primary barrier and solderable base (typically 3–6 µm) offering excellent mechanical strength and adhesion.
Electroless Palladium Layer
A thin layer (0.05–0.15 µm) that prevents nickel diffusion, enhances corrosion resistance, and supports both gold and aluminum wire bonding.
Immersion Gold Finish
A thin gold layer (0.03–0.1 µm) ensures excellent solderability and protects the underlying metals from oxidation.
No Black Pad Risk
The palladium layer eliminates the risk of black pad formation—a common issue in standard ENIG finishes.
Wire Bonding Versatility
ENEPIG supports both gold and aluminum wire bonding, giving designers flexibility for IC packaging.
Excellent Shelf Life & Flatness
The finish remains oxidation-free for extended periods and provides excellent planarity for SMT and BGA components.