2N5485 J-FET Transistor N-Channel  TO-92

The 2N5485 is an N-channel JFET (Junction Field Effect Transistor) commonly used for low-noise, high-frequency amplification applications. These transistors are preferred for amplifying low-level signals, particularly in radio frequency (RF) applications. Here are some key details about the 2N5485:

Key Features:

• Transistor Type: N-channel JFET
• Drain-Source Voltage (V_DS): 25V
• Maximum Drain Current (I_D): 10 mA
• Noise Level: Low noise (making it suitable for high-frequency, low-signal amplifiers)
• On-Resistance (R_DS(on)): Typically 1.5 kΩ
• Gate-Source Cutoff Voltage (V_GS(off)): -2V to -6V

Applications:

• Radio Frequency (RF) Amplifiers: Ideal for high-frequency operation due to its low noise characteristics.
• Low Noise Amplifiers (LNA): Used to amplify weak signals.
• Analog Switching: Can be used as an analog switch due to its high input and output impedance characteristics.
• Oscillator Circuits: Can be used as a frequency-determining component.

Advantages:

• Low Noise: The low noise level is particularly important when amplifying sensitive signals.
• High Input Impedance: The high input impedance allows circuits to drive the inputs with minimal impact.
• Stable Operation: Typically less affected by temperature and other environmental variations.

The 2N5485 is widely used in various electronic projects due to these features. It is especially useful in projects focused on signal processing, where such JFETs are highly beneficial.

Datasheet