Electronic Components on PCB Boards
This article introduces the electronic components on PCB boards, including capacitors, etc., as well as the classification of electronic components on PCBs.

The PCBA contains a wide range of
electronic components, including many circuit board components. PCBA is based on these components.
A Printed Circuit Board
Printed circuit board (or PCB) is the basis of PCBA. It is composed of
at least one insulating layer.
It is used to connect electronic components. PCB design and quality are critical to the overall
performance of the PCBA.
Circuit boards are made up of many components, including connectors and circuit board parts. Specific
component information can be found below:
Electronic Component
PCBA is a functional component that includes a variety of components, such as transistors, capacitors,
resistors and inductors.
PCBA is composed of different components that perform specific functions.
1) Capacitor
Capacitors store electrical energy and charge. It is characterized by the ability to pass alternating
currents and isolate direct current. Capacitors are used to improve circuit performance and stability in
PCBAs.
2) Resistors
PCB Resistors are among the most common electronic components used in PCBA. They limit the current of
the circuit.
Resistors are classified based on their material, structure and resistance values.
To regulate and control current, resistors are used widely in circuits such as power supplies,
amplifiers, signal processing circuits etc.
3) Inductor
Inductors are also called induction coils. They store magnetic energy. Inductors are used to stabilize
and prevent changes in current. Inductors are widely used in signal processing and power supply filters.
4) Integrated Circuits
Integrated Circuits combine multiple electronic components onto a single chip. They have the benefits of
being small, having low power consumption and having stable performance.
PCBAs are a combination of integrated circuits and printed circuit boards. These parts perform a variety
of complex functions such as digital signal processors, analog signal processors, communication
interfaces etc.
Integrated circuits are widely used for smart devices, including logic gate circuits and
microprocessors.
5) Circuit Board Connectors
Circuit Board Connectors are another important component that is used to connect electronic parts on the
PCBA. This includes sockets, female and male headers, pins, etc.
6) Other Important Components
PCBA can also contain other essential parts such as heat sinks and filters. These components are
essential for the smooth operation of PCBAs and the improvement of their overall performance.
Electronic Components Classification
Electronic components can be classified into different categories based on their function, including
power supply, sensor, display and storage.
Each component has a specific role to play in the overall performance of the PCBA.
1) Power Supply Components
Power supply components are core components in PCBAs, as they provide the power required for other
electronic components.
DC and AC power supplies are included in PCBA power supplies.
These power supplies ensure that the system is always running smoothly.
2) Control Components
Control component is responsible for managing, coordinating and controlling the PCBA’s various
functions.
The most common controllers are microcontrollers or digital signal processors.
The electronic components are controlled precisely by the controllers, who execute pre-programmed
commands.
3) Sensor
Sensors is a vital component used to monitor the changes in the surrounding environment of the PCBA.
Sensors can detect different physical quantities, including temperature, pressure and optical signals.
This information can be fed back to PCBA, so the system is able to make appropriate adjustments and
decisions.
4) Display Components
Display component provides visual interface to users and displays output information from the PCBA.
Displays are commonly made of liquid crystal displays (LCDs) or organic light emitting devices (OLEDs).
The PCBA can be used to display graphics and text, allowing for a more intuitive user experience.
5) Memory
The memory component stores data in the PCBA including temporary storage, permanent storage and other
types of storage.
Flash memory and random-access memory (RAM), for example, are used to store system data, applications,
and user information.
Size Classification
Electronic components on PCBAs can be classified into SMD components and plug-in electronic components
based on their size.
1) SMD Components
The capacitors, transistors and resistors are all compactly sized, directly mounted onto the PCB
surface.
2) Plug-In Components
It is necessary to insert it into the PCB holes of larger components, such as power modules and
integrated circuits.
Classification of Applications and Their Functions
Electronic components are also divided into generic and unique components based on their applications
and functions.
In various applications, general-purpose components such as resistors and capacitors are used.
Applications-specific components are specifically designed for devices such as integrated Circuits,
Sensors, and Displays.
Summary
The selection and configurations of electronic components are important in the design and manufacturing
of PCBA. They must be based on specific application requirements, performance criteria, and cost
considerations.
By carefully matching these components, you can optimize the PCB design and improve the performance of
the entire system.
Every stage of PCB production, from selecting raw materials to soldering and assembling components,
requires meticulous planning to ensure the final product meets expected standards.