PCB Manufacturing Glossary Terms

• Accelerator: A chemical that speeds up a reaction or curing process in PCB fabrication.
• Catalyst: A substance that quickens the curing of a resin without becoming part of the final product.
• Accuracy: The precision in positioning holes on a PCB.
• Additive process: Creating conductive patterns by selectively depositing material on a base.
• Adhesive: Substance enhancing adhesion between materials in PCB assembly.
• Aging: Material property changes over time under specific conditions.
• Annular ring: Conductive band encircling a hole on a PCB.
• Arc resistance: Time taken for an arc to create a conductive path.
• Artwork master: A layout used to produce PCBs accurately.

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Key PCB Terminology

• Backup material: Placed beneath a laminate stack to terminate drilling.
• Base material: Insulating material for printed wiring patterns.
• Blind via: Connects outer and inner layers without penetrating the entire PCB.
• Buried via: Connects inner layers without reaching outer surfaces.
• Blistering: Localized swelling between layers or laminate and cladding.
• Bond strength: Force needed to separate adjacent layers.
• B-stage resin: Intermediate stage of thermosetting reaction.

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Advanced PCB Concepts

• Capacitance: Property allowing electricity storage in conductors and dielectrics.
• Capacitive coupling: Electrical interaction due to capacitance between conductors.
• Carbide: Hard material used for making PCB drill bits.
• Ceramic Leaded Chip Carrier (CLCC): Ceramic chip carrier with compliant leads.
• Chip load (CL): Downward movement per revolution in PCB drilling.
• Chlorinated hydrocarbon: Organic compound with chlorine in its structure.
• Circuit: Interconnection of electrical devices to perform a function.

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Clad

Clad refers to a condition of the base material where a relatively thin layer or sheet of metal foil, known as cladding, has been bonded to one or both sides. This process results in what is known as metal-clad base material.

CNC

CNC stands for Computer Numerically Controlled. It is used to describe a machine that is equipped with a computer storing numerical information about location, drill size, and machine parameters. This stored data allows the machine to execute precise instructions with high accuracy.

Coat

To coat means to cover something with a finishing, protective, or enclosing layer of any compound. This process helps to enhance the durability and performance of the material being coated.