Liyuan Product Catalog--Diodes 1-4-EEWORLD

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A diode is also called a crystal diode, or diode for short; it is an electronic component that transmits current in only one direction. It is a device with two terminals connected by a part number, and has the property of making current flow or not flow according to the direction of the applied voltage. A crystal diode is a pn junction formed by a p-type semiconductor and an n-type semiconductor, with space charge layers formed on both sides of its interface and a self-built electric field. When there is no external voltage, the diffusion current caused by the difference in carrier concentration on both sides of the pn junction and the drift current caused by the self-built electric field are equal and are in an electrical equilibrium state.

[Appendix: Liyuan Product Catalog--Diodes 1-4]

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