BF998R,235

BF998R is a type of metal oxide semiconductor field-effect transistor (MOSFET). It has an operating frequency of up to 250MHz and a low voltage capability. It features high gate insulation resistance, low RDS(on) and low gate charge. This makes it suitable for a wide range of applications, including automotive, home appliance and communications devices.

Application Field

Some of the most common applications of BF998R are:

• Automotive sensors, such as speed and temperature sensors
• Home appliance control circuits
• Communications and networking equipment
• Industrial equipment and consumer electronics
• Audio and video systems
• RF amplifiers and mixers
• Medical electronics
• Computer peripherals and gaming consoles

MOSFETS are also used in consumer products, such as your car stereo, cell phone, and microwave oven.

Working Principle

BF998R is a four terminal device, featuring a source, gate, drain and bulk connections. The gate terminal is used to turn the device on and off, and the source and drain terminals are used to control the current. When the gate voltage is greater than the drain voltage, then a channel is formed in the MOSFET and current is allowed to flow from the source to the drain. When the gate voltage is less than the source voltage, the MOSFET is turned off, and no current flows.

The MOSFET also features high gate insulation resistance, which is essential for RF applications. High gate insulation resistance has the benefit of preventing unwanted current leakage, and ensuring signal integrity. High gate insulation resistance also has the benefit of reducing signal distortion.

BF998R is a versatile device and can be used for a variety of RF and amplifier applications. It has a relatively low operating voltage of 199V, which makes it suitable for many automotive and home appliance applications. It also has a low RDS(on) of 123 mOhms and a low gate charge of 5.5 nC. All of these factors make it an ideal device for a wide range of applications.