Electronic components are divided into two categories: electronic components and electronic devices. Electronic components refer to products that are not changed in the process of production and processing. There are resistors, potentiometers, capacitors, inductors, all kinds of sensitive components. However, we often say that the electronic components are only: resistors, inductors, capacitors. The electronic device refers to the processing of the production process has been changed the molecular structure of the product. Usually there are: integrated circuits, diodes, transistors and so on.
Resistors have rectangular die resistors and cylindrical chip resistors.
Rectangular chip resistors are miniaturized, leadless, dimensionally standardized, and are suitable for surface mounting on printed circuit boards. Cylindrical chip resistors in the printed circuit board has a high resistance to bending, noise and third harmonic distortion are relatively low, commonly used in high-end audio.