What is Enepig surface finish?

What is Enepig surface finish?

ENEPIG is a type of surface finish done on copper layer to protect it from oxidation and corrosion in printed circuit boards. This surface finish improves the solderability of copper and is also RoHS compliant.

What is the difference between ENIG and Enepig?

ENEPIG is similar to ENIG in both utilize electro-less nickel on top of copper plating; the difference is while ENIG has gold deposited directly on top of nickel, ENEPIG has an additional layer of palladium between the nickel and final gold layer (see below Fig. 1).

Is Enepig wire bondable?

ENIG is a very versatile surface finish, it is a solderable surface, it is aluminum wire bondable, and is an excellent electrical contacting surface.

What is ENIG finish PCB?

ENIG is a two layer metallic coating of 2-8 μin Au over 120-240 μin Ni. The gold protects the nickel during storage and also provides the low contact resistance required for the thin gold deposits. ENIG is now arguably the most used finish in the PCB industry due the growth and implementation of the RoHs regulation.

What is Enepig plating?

ENEPIG is a type of metal plating for PCBs. Nicknamed the “universal surface finish” for its ability to be deposited on just about any PCB assembly, ENEPIG finishes are primarily used to support soldering and gold and aluminum wire bonding.

Is Enepig lead-free?

ENEPIG came through with flying colors as it formed one of the most robust solder joints with lead-free SAC type alloys.

Is ENIG a Rohs?

ENIG PCB finish is a double layer metallic coating with nickel that acts both as a protective barrier to the copper circuits and a surface on which the components are welded. A layer of gold protects nickel during storage. Enig is Rohs compliant and people tend to use the tersm together.

What is the difference between Enig and HASL?

HASL is generally preferred for hand-soldering due to the easy joint formed. However, HASL leaves an uneven surface despite the leveling process. ENIG, on the other hand, provides for a very flat surface making ENIG preferable for fine pitch and high pin count components especially ball-grid array (BGA) devices.

What is Smobc in PCB?

– To provide a solderable surface when assembling (soldering) the components to. the PCB. Most surface finishes are considered SMOBC (Solder Mask Over Bare Copper).

Is Enig same as immersion gold?

Electroless nickel immersion gold (ENIG or ENi/IAu), also known as immersion gold (Au), chemical Ni/Au or soft gold, is a metal plating process used in the manufacture of printed circuit boards (PCBs), to avoid oxidation and improve the solderability of copper contacts and plated through-holes.

What is the ENEPIG surface finish?

ENEPIG is a type of surface finish done on copper layer to protect it from oxidation and corrosion in printed circuit boards. This surface finish improves the solderability of copper and is also RoHS compliant. ENEPIG stands for Electroless Nickel Electroless Palladium Immersion Gold. Five features that make ENEPIG the best surface finish:

What is the difference between Enig/ENEPIG/HASL/OSP and OSP?

HASL, ENIG/ENEPIG, Immersion gold and Immersion Tin all belong to metallic surface finishes while OSP and Carbon ink belong to organic surface finish. HASL is a conventional type of surface finish applied on PCBs.

What is the difference between Enpig and ENEPIG?

Different from ENIG, ENEPIG takes four layers of metal structure including copper, nickel, palladium and gold. The process of ENEPIG is the same as that of ENIG except that electroless palladium plating is added between ENP and immersion gold.

What is enenepig gold PCB?

ENEPIG is essentially different from electroplated nickel gold and immersion gold: Nickel electroplating, through the electroplating method, the gold particles are attached to the PCB board. It also known as hard gold because the adhesion is strong. Using this process can greatly increase the hardness and wear resistance of the PCB.