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How is PCB connected?

Published in PCB Technology 3 mins read

A Printed Circuit Board (PCB) is connected by using small pathways, called traces, which are laid out on a non-conductive board to pass electricity between components.

Understanding PCB Connections

Printed Circuit Boards are fundamental components in almost all modern electronic devices. They provide a structured way to connect various electronic parts.

Based on the provided information:

  • Components are mounted onto a board that does not conduct electricity. This non-conductive material provides the base structure.
  • The electrical connection between these mounted components is achieved using traces. These are essentially conductive paths printed or etched onto the board surface or within its layers.
  • These traces allow electricity to pass through, enabling the components across the board to interact and function as intended.
  • To place the components accurately, small holes are drilled on the board where each part needs to be positioned. These holes often serve as connection points for component leads to attach to the traces, typically through soldering.

Key Elements of PCB Connection

Element Description Function
Board Non-conductive material (e.g., fiberglass) serving as the base. Provides structure and prevents unwanted electrical paths.
Components Electronic parts (resistors, chips, etc.) placed on the board. Perform specific electrical functions within the circuit.
Traces Small pathways made of conductive material (usually copper). Connect components and allow electricity to pass through.
Holes Small openings drilled into the board. Guide component placement and facilitate connections to traces.

The Role of Traces

The core of PCB connection lies in the traces. Think of traces as tiny wires pre-designed and fixed onto the board. Instead of having loose wires connecting components, PCBs use these flat, conductive paths.

  • Pathways: They create the specific routes electricity must follow between different points on the board.
  • Functionality: By guiding the flow of electricity, traces ensure that each component receives the necessary power and signals to operate and communicate with other parts of the circuit.

In essence, components are strategically placed on the non-conductive board, and traces are the predefined "road map" that electrically links them together, allowing the entire circuit to work by facilitating the passage of electricity.

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