2SK170, Low-Noise N-Channel JFET, TO-92, -40V, 400mW, 22ms Admittance

The 2SK170 is a high-performance N-Channel JFET (Junction Field Effect Transistor) designed primarily for low-noise audio amplification applications. It is well-suited for preamplifier circuits, including the first stages of equalizers (EQs) and Moving Coil (MC) head amplifiers, where noise reduction is critical. Featuring a high forward transfer admittance (Yfs) of 22ms and low gate current leakage, the 2SK170 ensures excellent audio fidelity, making it ideal for precision signal processing in high-end audio equipment.

This JFET offers a breakdown voltage (V_GDS) of -40V and is capable of handling a drain power dissipation of up to 400mW, making it versatile for various applications. Its low noise figure (NF) ranging between 1-2dB provides remarkable clarity in audio signal reproduction. The device's input capacitance and low gate-source cut-off voltage allow for superior frequency response, ensuring minimal distortion in sound output.

With its compact TO-92 package, the 2SK170 is optimized for easy through-hole mounting in dense circuit boards, commonly seen in professional audio equipment. It is further distinguished by its stable thermal characteristics, with a junction temperature rating of up to 125°C and a storage temperature range from -55°C to 125°C, ensuring consistent performance even in demanding environments.

Key Features:

• High Forward Transfer Admittance: Typically 22ms, optimizing signal amplification and fidelity.
• Low Noise Figure: With a noise figure (NF) as low as 1dB, the 2SK170 minimizes background noise in sensitive circuits.
• High Breakdown Voltage: Rated at -40V (V_GDS), providing robustness in signal handling.
• Compact TO-92 Package: Space-saving through-hole package design ideal for integration into compact audio equipment.
• Low Input Capacitance: Reduces signal distortion for high-frequency performance, ensuring accurate reproduction of audio signals.
• Thermal Stability: Capable of operating at junction temperatures up to 125°C, maintaining reliability under varied thermal conditions.