2SK771-5-TB-E

Jfets Overview

The onsemi 2SK771-5-TB-E is an N-channel Junction Field-Effect Transistor (JFET) designed for surface-mount applications. It utilizes a compact SC-59 (SOT-23-3) package, facilitating automated assembly and space-constrained circuit designs. The device operates with a drain-source voltage rating of 15 V and supports a maximum continuous drain current of 50 mA. Key electrical characteristics include a gate-source cutoff voltage of approximately 1.5 V at 100 µA and a typical input capacitance of 10 pF at 5 V. With a power dissipation limit of 200 mW and a junction temperature rating up to 150°C, it serves as a reliable component for low-power analog signal processing tasks.

Jfets Feature Summary

• N-channel JFET configuration optimized for low-noise analog signal paths
• Compact SC-59 surface-mount footprint for high-density PCB layouts
• High thermal stability supporting operation up to 150°C junction temperature

Jfets Applications

• Low-noise preamplifier stages in audio and instrumentation equipment
• Constant current source regulation in sensor biasing circuits
• Analog switch and multiplexer input buffering

Jfets Procurement Notes

Verify the manufacturer part number against official onsemi documentation to ensure authenticity. Confirm that the specific suffix matches the required tape-and-reel or cut-tape packaging format for your assembly line. Check for RoHS compliance status and material declarations relevant to your region's regulatory requirements before finalizing procurement orders.

Jfets Selection Notes

Select this component when a small SOT-23 form factor is required for N-channel JFET functionality. Ensure the circuit design accommodates the 15 V drain-source voltage limit and 50 mA current capability. Consider the input capacitance and cutoff voltage specifications to verify compatibility with the intended signal frequency and biasing conditions compared to alternative packages like TO-92.

Jfets Part Context

This component belongs to the 2SK series of JFETs manufactured by onsemi. The 2SK771 variant specifically denotes an N-channel device within this lineup. The -5-TB-E suffix indicates the specific binning, packaging type, and environmental compliance attributes defined by the manufacturer for mass production distribution.

Jfets Replacement Considerations

Direct pin-compatible replacements may include other SC-59 packaged N-channel JFETs such as the MMBF4117 or 2SK932, provided their voltage and current ratings meet or exceed the original design requirements. Verify transfer characteristics and capacitance values to ensure equivalent performance in sensitive analog applications.