Field effect tube |MOSFET|MOS tube - BYCHIP

The full name of MOSFET is metal oxide semiconductor field effect transistor, which belongs to power components, with the characteristics of small driving power, fast switching speed, high operating frequency, and strong thermal stability, so it is played as an amplifier circuit or switching circuit.

According to the polarity of its "channel" (working carrier), it can be divided into two types of "N-type" and "P-type", usually known as NMOSFET and PMOSFET, and other abbreviations include NMOS, PMOS, etc.

Mosfets are mainly used in low power of high frequency and low voltage, and the voltage performance and range of different types of MOSFETs are not the same.


Because of the advantages of high operating frequency and strong thermal stability, MOSFET is often used in automotive, industrial and other fields. According to industry market institutions, MOSFET will account for 22% in terminal applications, especially in the automotive field, and 19% in PC computers and storage devices, and 14% in industry by 2022.

Application of MOSFET in automobile

With the rapid development of new energy vehicles, the demand for MOSFET has surged. MOSFET is the core component in automotive electronics, and the transmission controller in the automotive engine, drive system, and braking and steering control are inseparable from MOSFET. In the traditional fuel vehicle auxiliary braking, power steering and seat and other control systems, all need to use the motor, with the growth of the number of traditional car built-in motors, but also led to the MOSFET market growth.

MOSFET can not only be applied to the automotive field, but also has a wide range of applications in other fields. For example, the RF end power conversion in 5G base stations, and because the MOS tube has the characteristics of less heat and small size, it is also more common in the application of mobile phone fast charge technology.

What are MOSFET manufacturers?

In 2020, Infineon, the overseas manufacturer of the global MOSFET market, occupied 24% of the share, ranking first. Followed by the top 10 in the world are China Resources Micro, ANSI Semiconductor, Shilanwei, the market share of 3.9%, 3.8% and 2.2%.