2N5485 N-Channel J-FET Transistor

The 2N5485 is a prominent N-channel JFET (Junction Field Effect Transistor) that is frequently employed in high-frequency amplification applications that require low noise. This transistor is particularly effective in amplifying weak signals, making it a popular choice in radio frequency (RF) applications.

Key Specifications of the 2N5485

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

Applications of the 2N5485

• Radio Frequency (RF) Amplifiers: Its low noise characteristics make it perfect for high-frequency applications.
• Low Noise Amplifiers (LNA): It is effective in amplifying weak signals.
• Analog Switching: It can function as an analog switch due to its high input and output impedance characteristics.
• Oscillator Circuits: It can serve as a frequency-determining component.

Advantages of the 2N5485

• Low Noise: The low noise level is crucial when dealing with sensitive signal amplification.
• High Input Impedance: The high input impedance enables circuits to control the inputs with minimal interference.
• Stable Operation: It is generally less influenced by temperature fluctuations and other environmental factors.

The 2N5485 is a versatile tool in numerous electronic projects, particularly those centered around signal processing, where such JFETs are extremely advantageous.

Datasheet