Electronic components are the components and small machines or instruments that make up electronic devices, often consisting of several parts and commonly interchangeable within similar products. They typically refer to certain parts used in industries such as electrical, radio, and instrumentation, and are a general term for electronic devices like capacitors, transistors, hairsprings, and mainsprings. Common examples include diodes.

Electronic components include: resistors, capacitors, inductors, potentiometers, vacuum tubes, heat sinks, electromechanical components, connectors, discrete semiconductor devices, audio-visual devices, laser devices, electronic display devices, optical devices, sensors, power supplies, switches, micro-motors, electronic transformers, relays, printed circuit boards, integrated circuits, various circuits, piezoelectric, crystal, quartz, ceramic magnetic materials, printed circuit substrates, electronic functional materials, electronic adhesives (tapes), electronic chemical materials and components, etc.

Electronic components are certified internationally with the EU's CE mark, the US's UL certification, Germany's VDE and TUV certifications, and China's CQC certification, among others, to ensure their compliance.