BF422RL1G

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Transistor Type:	NPN
Current - Collector (Ic) (Max):	50mA
Voltage - Collector Emitter Breakdown (Max):	250V
Vce Saturation (Max) @ Ib, Ic:	500mV @ 2mA, 20mA
Current - Collector Cutoff (Max):	--
DC Current Gain (hFE) (Min) @ Ic, Vce:	50 @ 25mA, 20V
Power - Max:	830mW
Frequency - Transition:	60MHz
Operating Temperature:	-55°C ~ 150°C (TJ)
Mounting Type:	Through Hole
Package / Case:	TO-226-3, TO-92-3 (TO-226AA) (Formed Leads)
Supplier Device Package:	TO-92-3
Base Part Number:	BF422

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BF422RL1G Application Field and Working PrincipleBF422RL1G is a single bipolar junction transistor (BJT) series developed by STMicroelectronics. This device has been optimized for use in high performance applications including those encountered in high frequency and audio amplifiers, switching applications, and high precision linear circuits. Additionally, the device features excellent power dissipation performance, low noise, and is ideal for battery operated applications. In this article, we\'ll take a closer look at the applications, features, and working principle of the BF422RL1G. ApplicationsThe BF422RL1G is well-suited for many high performance applications including switching, linear amplification, and audio/high frequency amplification. The device offers very low on-resistance, making it ideal for switching applications. It also features high voltage withstand ratings, excellent current gain linearity, and low gate charge values, allowing it to operate efficiently even under the toughest conditions. The device also has excellent linearity characteristics, making it ideal for use in linear amplifier applications. It can also be used in high precision circuitry for filtering and signal processing. In addition, the BF422RL1G has low noise and high frequency operation, making it suitable for audio applications as well. It operates at frequencies up to several hundred MHz with excellent gain and noise characteristics. FeaturesThe BF422RL1G has many features that make it a great choice for many different applications. The device offers very low on-resistance, high voltage withstand ratings, and excellent current gain linearity. These features make it ideal for switching and linear applications. The device also has excellent power dissipation capabilities. It is capable of dissipating up to 1.5W in typical applications. This makes it well-suited for power-sensitive applications, such as those encountered in battery operated devices. The device also features low gate charge values, offering excellent efficiency even in the toughest conditions. Finally, the device has very low noise figures and operates at frequencies up to several hundred MHz. This makes it an excellent choice for audio and high frequency applications. Working PrincipleThe BF422RL1G is a bipolar junction transistor (BJT) series produced by STMicroelectronics. A BJT is a three terminal device that consists of two p-type and one n-type semiconductor layers. At the junction between these layers, carriers are able to move freely, creating an N-p-N junction.When a voltage is applied between the base and emitter terminals, the emitter current is allowed to flow through this semiconductor junction,increasing the current flow through the collector. This current can be controlled by adjusting the base voltage.This device also features excellent high frequency performance. The small capacitance values between the Base-collector and collector-emitter junctions make it well-suited for high frequency applications.Finally, the device features a very low on-resistance making it ideal for switching and linear applications. The low gate charge values also allow the device to operate very efficiently in a wide range of conditions.ConclusionThe BF422RL1G series from STMicroelectronics is an excellent choice for many high performance applications. It features low on-resistance, excellent current gain linearity, and low gate charge values. In addition, it is capable of dissipating up to 1.5W and features low noise and high frequency performance. All of these features make it an excellent choice for many different applications, including switching, linear amplification, audio/high frequency amplification, and high precision circuitry.

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