BF245B

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

BF245B is a dual N-channel junction field effect transistor (JFET) specifically designed for general purpose switching and low-noise application. It integrates two transistors in one package, which could be treated independently or connected together in parallel. It is perfect suitable for the switching application in the audio industry. It is released by NXP semiconductor that bring the world’s most advanced technology to the market.

The working principle behind BF245B is quite simple. It is operated in depletion mode, which means that the inside channel is connected to the Vgs (gate-to-source voltage) with maximum possible concentration of charges. When the voltage applied to the gate goes below the channel voltage, the channel will be conductive. Thus due to the reverse-biased junction between the channel and the source, the gate-to-source voltage may control the conduction of the channel. The gate-to-drain voltage (Vgd) will increase when the conduction is on and it will eventually reach a point where no more current is conducted through. The junction field effect transistor has two main components, the source and the gate. The gate is where the voltage is applied and the source will determine the amount of current flowing through the channel.

The BF245B is mainly used in audio application by allowing the user to control sound levels with voltage. It could also be used in automatic gain control circuits for amplifiers, for negative feedback loops as well as for oscillator and amplifier biasing applications. It is used in automatic motor controls, switching and latching circuits and also used for voltage detection and various other control functions. Moreover, it has a high input impedance between the source and gate electrodes and has low noise characteristics. Due to the low on-resistance and the large power dissipation capacity, the transistor can be used in high power amplifiers. It is designed to operate up to frequencies of few MHz and is widely used for RF switching applications.

In summary, the BF245B is a dual N-channel JFET that is primarily used in audio applications, allowing the user to control sound levels with voltage. It is suitable for RF switching application due to low noise and high frequency operation. Furthermore, its low on-resistance and large power dissipation make it an ideal choice for high power amplifier applications. BF245B is a powerful and reliable transistor developed by NXP Semiconductor, which provides the most advanced technology, to the market.

The specific data is subject to PDF, and the above content is for reference