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Process Guides

PCB Plating and Metallization: Electroless and Electrolytic Copper

Plating builds the conductive copper in holes and on the surface. Throwing power, thickness distribution and bath control determine whether vias are reliably filled and barrels are void-free.

Overview

Understanding pcb plating and metallization means understanding both the process chemistry/mechanics and the machines that control it. Here is what matters. A thin electroless copper layer first makes the drilled holes conductive; electrolytic copper plating then builds thickness in the barrels and on the surface (panel and pattern plating). Bath chemistry, current density and agitation control uniformity and throwing power.

Where It Fits in the Process

Plating follows via formation and hole preparation and precedes the outer-layer image, etch and solder mask steps.

Equipment Categories Involved

Key Considerations

Vertical and horizontal plating lines differ in throwing power and footprint; pattern plating reduces etched copper but adds process complexity.

Standards and Compliance

Designs and processes in this area commonly reference:

  • IPC-6012
  • IPC-4552 (ENIG)
  • IPC-TM-650 (test methods)

Selection and Comparison

Key trade-offs when specifying for pcb plating and metallization:

  • Panel plating vs. pattern plating
  • Vertical vs. horizontal plating lines
  • Electroless copper vs. direct metallization

Recommended Equipment from acfindustry.com

The following machines from our catalog support the processes discussed above:

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Frequently Asked Questions

What is PCB Plating and Metallization?

A thin electroless copper layer first makes the drilled holes conductive; electrolytic copper plating then builds thickness in the barrels and on the surface (panel and pattern plating). Bath chemistry, current density and agitation control uniformity and throwing power.

What should I consider for pcb plating and metallization?

Vertical and horizontal plating lines differ in throwing power and footprint; pattern plating reduces etched copper but adds process complexity.

What equipment is used for pcb plating and metallization?

It involves Plating and Metallization Equipment. You can browse each category and request a matched configuration through the equipment finder.

Where does pcb plating and metallization fit in the PCB process?

Plating follows via formation and hole preparation and precedes the outer-layer image, etch and solder mask steps.

Which standards apply to pcb plating and metallization?

Relevant standards include IPC-6012, IPC-4552 (ENIG), and IPC-TM-650 (test methods).

How do I get a quotation for pcb plating and metallization equipment?

Use the equipment finder on this page to specify your process stage, board type, automation level and production volume, then submit the inquiry. An engineer from acfindustry.com will respond within one business day.