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Component procurement essential basic knowledge book


As an electronic components procurement, not only do you need flexible business skills, you also need to master the classification of electronic components, model identification, usage and other professional basic knowledge in order to provide more professional procurement advice to enterprises.

Classification of electronic components
The basic parts used to manufacture or assemble the electronic machine are called electronic components, and the components are the independent individuals in the electronic circuit.

Active and Passive Components
Active components refer to components that can excite active functions such as amplification of electrical signals, oscillation, control of current or energy distribution, and even perform data operations and processing when energy supply is obtained.

Active components include a wide variety of transistors, integrated circuits (ic), video tubes, and displays.
Passive components relative to active components are those that cannot excite amplification, oscillation, etc., of electrical signals, and the response to electrical signals is passive and submissive, while the electrical signals pass through the electronic components according to the original basic characteristics.

The most common resistors, capacitors, inductors, etc. are passive components. Active and passive components
Active components correspond to active components. If an electronic component works with the presence of a power source inside it, this device is called an active component and requires a source of energy to achieve its specific function.

Active devices themselves also consume power, and high-power active devices are usually equipped with heat sinks.
The opposite of passive components are passive components. Resistors, capacitors and inductors are called passive components because they can perform their prescribed functions without the need for an external excitation power supply when a signal is passed through the circuit.

Passive devices consume little electrical energy themselves, or convert electrical energy into other forms of energy.
Discrete components are the same as integrated circuits (ic)
In terms of physical structure, circuit function and engineering parameters, active devices can be divided into two categories: discrete components and integrated circuits. Discrete components are opposed to integrated circuits (ic).

Integrated circuit (ic integrated circuit) is a kind of circuit required in a class of transistors, resistive and capacitive components and wiring interconnected together, made in a small piece or several small pieces of semiconductor wafers or dielectric substrates, packaged as a whole, with the circuit function of electronic components.

Discrete components are ordinary resistors, capacitors, transistors and other individual electronic components, collectively referred to as discrete components. Discrete components are single-function, "minimum" components, no longer have other components inside the functional unit.
Distinction between circuit-type components and connection-type components
Passive devices in electronic systems can be divided into circuit-type devices and connection-type devices according to the circuit function they perform.
Distinction between circuit-type components and connection-type components
Identification of common electronic components
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