BF245 N-Channel JFET Transistor – Low Noise, General-Purpose Amplifier, TO-92 Package

The BF245 is a general-purpose N-channel junction field-effect transistor (JFET) designed primarily for low-noise amplification applications in VHF/UHF frequencies. Featuring high input impedance and low noise figure, this transistor is commonly used in RF front-ends, amplifiers, and signal processing circuits. Its TO-92 package allows for easy integration into through-hole designs, and the device is well-suited for analog designs requiring minimal signal distortion and wide dynamic range.

Key Features:

• N-Channel depletion-mode JFET with high input impedance
• Low noise figure: ideal for RF and audio preamplifier applications
• TO-92 package for simple PCB mounting
• Wide frequency response up to VHF/UHF bands
• Typical IDSS: 6–12 mA (varies by variant: A, B, C)
• Gate-source cutoff voltage V_GS(off): –0.5 to –8 V