J310_D27Z

Overview

The J310/D27Z is an N-channel RF small signal Junction Field-Effect Transistor (JFET) manufactured by onsemi. Designed for ultra-high frequency applications, this silicon-based device operates in depletion mode and is housed in a TO-92 three-pin cylindrical package with through-hole terminals. The component features a maximum feedback capacitance of 2.5 pF, supporting its function as a low-capacitance amplifier in UHF band circuits.

Feature Summary

• N-channel silicon construction optimized for RF small signal amplification
• Ultra-low feedback capacitance suitable for high-frequency operation
• Depletion mode functionality for standard biasing configurations

Applications

• UHF band signal amplification
• RF small signal processing circuits
• High-frequency amplifier stages

Procurement Notes

Verify the specific suffix against official documentation to confirm exact electrical tolerances and pinout compatibility. Ensure the procurement channel provides original manufacturer packaging to prevent counterfeit components. Cross-reference the part number with current onsemi catalogs to confirm availability status and any recent nomenclature updates due to system integrations.

Selection Notes

Select this component when low input capacitance is critical for maintaining signal integrity at ultra-high frequencies. The TO-92 package limits power dissipation capabilities, making it suitable only for low-power RF applications. Verify that the required gain and noise figure specifications align with the device's typical performance characteristics for the intended operating frequency range.

Part Context

This JFET belongs to the family of radio frequency discrete semiconductors designed for specialized analog signal processing. Unlike general-purpose transistors, these devices prioritize high-frequency response and low noise performance over high current handling. The TO-92 form factor allows for easy integration into legacy and compact circuit board designs requiring minimal footprint.

Replacement Considerations

Substitute parts must match the N-channel JFET configuration, TO-92 package, and similar feedback capacitance values. Verify that alternative devices support UHF band operation and depletion mode functionality without altering the circuit's bias requirements or impedance matching networks.