Summary of 20 Common Terminology in PCB Design

PCB (Printed Circuit Board): A printed circuit board is a printed board composed of conductive materials and insulating substrates, which realizes the signal connection of the designed circuit and assembles all the components required for the circuit.Today qihe smt pick and place machine sharing summary of 20 commonly used terms in PCB design PCB .

Single layer PCB: A PCB with only one side for signal wiring. Double sided PCB: A PCB with signal wiring on both sides.

Multilayer PCB: There are many conductive wiring layers and insulation material layers bonded together, and signal wiring between layers can achieve interconnection of PCBs.

Printed Circuit: A printed component or printed circuit generated by design on an insulating substrate, as well as a signal transmission circuit combining the two.

Layer: A conductive layer composed of copper foil on a PCB, including a transmission signal layer and a power or ground layer.

Inner Layer: The inner layer is a negative layer of a PCB, mainly used as a layer for power or ground.

Signal Layer: The signal layer is a type of positive layer on a PCB, mainly used for signal transmission and routing.

Single layer PCB: A PCB with only one side for signal wiring.

Mother Board: A main PCB that can install one or more PCB components.

Backplane: Multiple connector sockets are provided on one side for electrical interconnection of PCBs between points. Electrical interconnections between points can be printed circuits.

Components: Basic units that implement circuit functions, such as capacitors, inductors, resistors, integrated circuit chips, etc.

Footprint: Component packaging refers to the appearance and pad position of a component when soldered onto a circuit board. Since the packaging of the original component is only about the appearance and pad position of the component, pure component packaging is only a concept of space. Therefore, different components can share the same component packaging.

Pad: An electrical soldering point used to connect component pins and PCB wiring, typically consisting of a copper layer, copper plating, and solder flow, with a solder mask layer around it.

Via: To connect the lines between layers, a common hole is drilled at the intersection of the wires that need to be connected in each layer.

Blind Via: A through hole that extends from the middle layer to a surface layer of a PCB.

Buried Via: A through hole from one middle to another that does not extend to the surface layer of a PCB.

Clearance: The minimum distance to prevent short circuits between signals, which is an important setting parameter for PCB wiring.

Layout: The operation of placing components appropriately on a PCB based on design requirements and circuit characteristics. It is an important step in implementing wiring, and a good layout can effectively achieve the routing of all signals on the PCB.

Net List: A data table representing the connection relationships between component pins on a PCB, which describes all electrical connections on the PCB.

Routing: The operation of connecting all electrical connections with actual wiring according to the network table and design requirements after the layout is completed. Usually, manual intervention in automatic wiring is used for PCB design

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