Components Sourcing

Components name

PCB characters (Designator)

Main function

Pictures

Capacitor

C

A basic linear electronic component. Capacitors are applied in power filtering, signal filtering, signal coupling, resonance, filtering, compensation, charging and discharging, energy storage, and isolation of DC circuits

Resistor

R

A Resistor is generally simply called a resistance in daily life. It is a current-limiting component. After the resistor is connected in the circuit, the resistance value of the resistor is fixed. Generally, it has two pins and can limit the current size of the branch it is connected to

3

Inductor

L

An Inductor is a component that can convert electrical energy into magnetic energy and store it. The structure of an inductor is similar to that of a transformer, but it has only one winding. An inductor has a certain inductance and only hinders the change of current. If the inductor is in a state where no current is passing through it, when the circuit is connected, it will attempt to prevent the current from flowing through it. If the inductor is in a state where current is flowing through it, it will attempt to maintain a constant current when the circuit is disconnected. Inductors are also known as chokes, reactors, and dynamic reactors.

4

Diode

D

A diode is an electronic device made of semiconductor materials such as silicon, selenium, and germanium . A diode has two electrodes, the positive one, also known as the anode. The negative terminal, also known as the cathode, conducts when a forward voltage is applied between the two terminals of a diode, and cuts off when a reverse voltage is applied. The conduction and cut-off of a diode are equivalent to the connection and disconnection of a switch [2].

5

Crystal

Y / X

Crystal oscillators serve as the "time reference" for electronic devices, providing precise clock frequencies for circuits by generating stable high-frequency oscillation signals. It enables various functions of electronic devices to operate in a unified sequence and is a core component that ensures the stable operation of the equipment

6

Connector

J / CONN

It generally refers to an electrical connector, that is, a device that connects two active components to transmit current or signals. The male end and the female end can transmit information or current after contact. The basic components include metal contacts, insulators, housings and sheaths

7

Relay

RL

It is an electrical control device. When the change of the input quantity (excitation quantity) meets the specified requirements, it causes a predetermined step change in the controlled quantity in the electrical output circuit. It has an interactive relationship between the control system (also known as the input loop) and the controlled system (also known as the output loop). It is usually applied in the control circuits of automation. In fact, it is an "automatic switch" that uses a small current to control the operation of a large current. Therefore, it plays roles such as automatic regulation, safety protection, and circuit conversion in the circuit

8

Integrated circuit

U / IC

An integrated circuit is a miniature electronic device or component. By using certain processes, the transistors, resistors, capacitors, inductors and other components required in a circuit, as well as the wiring interconnections, are fabricated on a small piece or several small pieces of semiconductor wafers or dielectric substrates, and then encapsulated in a tube shell to form a microstructure with the required circuit functions. All the components have been structurally integrated into a whole, which has taken electronic components a big step forward towards miniaturization, low power consumption, intelligence and high reliability. It is represented by the letters "U" or "IC" in a circuit. The inventors of integrated circuits are Jack Kilby (integrated circuits based on germanium (Ge)) and Robert Noyce (integrated circuits based on silicon (Si)). Most of the applications in today's semiconductor industry are silicon-based integrated circuits, which are also a symbol of the Third technological revolution,main cost can from these part usually.

9

Fuse

F

Its main function is to provide overload protection. When a fuse is correctly placed in a circuit, it will melt and cut off the current by itself when the current abnormally rises to a certain height and temperature, thus ensuring the safe operation of the circuit

10

Mechanical parts

N/A

Screws,nuts , casing, Cable,metal parts,plastic parts,These types can be either standard or customized. Generally, it serves a fixing function, a protective function, and a connecting function