The 2N3684 is a silicon N-channel junction field-effect transistor (JFET) manufactured by Calogic, LLC. It is designed for low-noise amplifier applications and analog switching. This JFET offers high input impedance and low output impedance, making it suitable for sensitive circuits.

Applications

• Low-noise amplifiers
• Analog switches
• Sample-and-hold circuits
• Mixers
• Oscillators

Features

• High input impedance
• Low noise figure
• Low output impedance
• High gain
• Fast switching speed

Benefits

• Improved signal-to-noise ratio in amplifier circuits
• Reduced signal loss due to high input impedance
• Efficient analog switching with minimal distortion
• Stable performance over a wide range of operating conditions
• Enhanced circuit performance in various applications

Technical Specifications

The typical specifications include:

• Gate-Source Breakdown Voltage: -30V
• Drain-Source Voltage: 25V
• Gate-Source Voltage: -30V
• Drain Current: 20mA
• Power Dissipation: 300mW
• Operating Temperature Range: -65°C to +150°C

The 2N3684 is commonly used in audio preamplifiers, RF amplifiers, and instrumentation amplifiers where low noise is a critical requirement. Its fast switching speed also makes it suitable for data acquisition systems and other high-speed applications.