UNR921LJ0L Discrete Semiconductor Products

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The UNR921LJ0L is a single pre-biased bipolar junction transistor (BJT) designed for applications in a wide range of circuits and projects. This transistor is part of the UNR900B series, which is made of high reliability components and has a high voltage rating. The UNR921LJ0L is ideal for use in consumer electronics, power management, professional audio, and automotive electronics, among other industries.

The UNR921LJ0L has a current gain of 500 and supports up to 150V reverse voltage. The maximum collector rating of 4A guarantees it can handle heavy loads, while the maximum junction temperature of 150˚C ensures reliable operation in high temperature environments. This transistor is also characterized with a maximum power dissipation of 300 mW, making it suitable for a range of applications.

The working principle of the UNR921LJ0L transistor is simple. When a small current is applied to the base, the transistor is turned on and a much larger current flows from its collector to its emitter. This amplified current, generated by the transistor, is what makes the transistor useful for many electrical applications.

The UNR921LJ0L is typically employed in switching and amplifying circuits, where its fast switching speed and low saturation voltage make it a popular choice. For example, the transistor can be used to amplify an audio signal, switch a power supply, or act as an oscillator.

The UNR921LJ0L can also be used in small signal circuits, such as in circuit designs for radio receivers and audio amplifiers. In such applications, the transistor\'s high current gain and low on-state resistance make it an ideal choice for a wide range of projects.

Finally, the UNR921LJ0L transistor can be used in other areas as well, such as safety circuits, temperature control, and logical gate networks. Its reliability and cost effectiveness make it a great choice for any type of circuit.

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