2SB15990RL Discrete Semiconductor Products

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The 2SB15990RL is a Bipolar Junction Transistor (BJT) that belongs to the single category. Designed for general purpose amplifier applications, it uses silicon, a compound material semiconductor, as the major component to achieve high current gain and high switching speed required by most applications. Due to its capability of performing both conduction and switching features, 2SB15990RL finds its wide use in audio amplifiers, radio frequency amplifier, general purpose amplifiers, and high speed switching circuits.

2SB15990RL Application Field

Because of the excellent switching performance and current gain, several other applications become possible with the 2SB15990RL. The 2SB15990RL is used in mobile communications, as well as in low noise amplifiers. 2SB15990RL also finds its use in regulated power supplies due to its ability to switch and amplify the voltage supply automatically without any external connection. The transistor is suitable for all types of consumer electronic devices and home appliances. They are also used in home automation, medical equipment, telecommunication devices, consumer audio and video appliances, virtual reality applications, security systems, and consumer motor applications.

2SB15990RL Working Principle

The 2SB15990RL is a three terminal transistor operating on the principle of the Base-Collector-Emitter (B-C-E) configuration. The base is connected to voltage supply, the collector is connected to one of the switch contacts and the emitter is connected to the other switch contact. When the base voltage reaches the threshold voltage of the transistor, the current gain of the device is enhanced and it allows the flow of current from collector to the emitter and back. The current flow is kept constant, as the transistor has a hysteresis effect which delays switching from one state to another. As the voltage applied to the base terminal reaches the cut-off voltage, the current flow is cut off and the transistor is disabled.

When using 2SB15990RL, the threshold voltage (Vbe) should be selected to be 1.5V and the cut-off voltage (Vce) should be 0.2V. The device has a current gain between 70 and 80, which indicates that that 70mA is outputted as the device is fed with 0.1V. The device has a very high switching speed, which can reach up to 1 KHz or more depending on the application requirements.

Conclusion

The 2SB15990RL is a popular single BJT transistor designed for general purpose amplifiers and high-speed switching circuits. Its features and capabilities make it suitable for a wide array of applications. These include mobile communications, low noise amplifiers, regulated power supplies, audio and video amplifiers, telecommunication devices, home automation, medical equipment, and many more. With its excellent current gain and high-speed switching, 2SB15990RL can handle a wide range of applications in multiple fields.

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