PCBA Tech - What are the electronic components in PCBA processing?

PCBA processing is the only way for circuit board manufacturing. The manufacturing process mainly includes two major processes: PCB circuit board manufacturing and SMT patch processing. Among them, electronic components are indispensable. Electronic components are the basic part of PCBA patch processing. . It is also an important factor affecting the performance and quality of PCBA finished products. So what are the common electronic components in PCBA processing?

resistance

capacitance

inductance

Potentiometer

transformer

diode

Transistor

Field effect transistor

Light guide device

Electronic display device

sensor

1. Resistors are electronic components with resistance characteristics and are one of the most widely used components in PCBA processing.

Resistors are divided into fixed resistors and variable resistors (potentiometers), which play the role of voltage division, current shunting, and current limiting in the circuit.

2. Capacitor is also one of the basic components in PCBA processing. It is a storage component of electric energy and plays a role of coupling, filtering, DC and tuning in electronic circuits.

3. The induction coil is called an inductor, which has the function of storing magnetic energy.

Inductance coils in PCBA processing are usually composed of skeletons, windings, shields, and iron cores.

4. The resistance of the potentiometer can change the resistance. When PCBA is processed, the resistor needs to be continuously adjusted within a specified range, which is called a potentiometer.

. The potentiometer consists of a shell, a sliding end, a rotating shaft, a ring resistor body and 3 lead ends.

5. The transformer processed by PCBA is composed of an iron core (or iron core) and a coil. The coil has two or more windings. The winding connected to the power supply is called the primary winding, and the remaining windings are called the secondary winding. A transformer is a device that transforms voltage, current, and impedance. When there is an alternating current in the primary coil, an alternating magnetic flux is generated in the iron core, allowing voltage to be induced in the secondary coil. Transformers are mainly used for AC voltage conversion, current conversion, power conversion, impedance conversion and buffer isolation, and are one of the indispensable important components in the PCBA process.

6. Crystal diodes (ie semiconductor diodes, hereinafter referred to as diodes) are composed of PN junctions, electrode leads and additional sealed shells, and have unidirectional conductivity.

7. Transistor is the core device for signal amplification and processing, which is widely used in PCBA patch processing.

8. Field-effect transistor is also a kind of semiconductor device with PN junction. Unlike transistors, in PCB patch processing, the conductivity of PN junction is not used, but its insulation characteristics are used.

9. Electro-acoustic device, used in the circuit to complete the conversion between electric signal and sound signal, is called electro-acoustic device. It has a variety of speakers, microphones, earphones, transmitters, receivers and so on.

10. SMT chip processing requires the use of semiconductor light-sensitive photoconductive devices, photovoltaic cells and semiconductor light-emitting devices, such as photovoltaic devices, that use the semiconductor photovoltaic effect.

11. An electronic display device is a photoelectric conversion device that converts electrical signals into optical signals, that is, a device used to display numbers, symbols, text or images. It is a key component of an electronic display device and has a great impact on the performance of the display device.

12. The patch of the sensor is very important during PCB patch processing. The sensor can feel the measurement and convert it into a usable signal device or device according to a certain rule, usually composed of sensitive components and conversion components.

PCBA processing is inseparable from these electronic components, and the performance and quality of electronic components also affect the quality of PCBA finished products. Among them, SMT chip processing and PCB circuit board manufacturing are also very important, especially in the actual operation of PCBA. Chip processing needs to understand the function of each component.