2N5639G

Overview

The 2N5639G is an N-channel Junction Field Effect Transistor (JFET) in depletion mode, specifically Type A. It is housed in a TO-92 package with three terminals. The device features a maximum drain-source voltage of 30V and a maximum continuous drain current of 50mA. Key electrical characteristics include a maximum drain-source on-resistance of 60 ohms and a maximum feedback capacitance of 4 pF. The operating junction temperature range extends from -65°C to 150°C.

Feature Summary

• Designed for chopper and high-speed switching applications
• Low drain-source on-resistance for efficient signal passage
• Optimized for low-level analog switching tasks

Applications

• Chopper stabilized amplifiers
• Sample and hold circuits
• Low level analog switching

Procurement Notes

Verify the specific suffix 'G' against the manufacturer's official datasheet to confirm pinout compatibility and exact electrical tolerances. Ensure the procurement source provides documentation confirming the component meets the Type A specification for depletion mode operation. Cross-reference the package marking with the TO-92 standard to prevent substitution errors during assembly.

Selection Notes

Select this component when designing circuits requiring precise analog switching with minimal charge injection. The low feedback capacitance supports high-speed performance in sample and hold configurations. Consider the 60-ohm on-resistance limit when evaluating signal loss in sensitive amplifier stages. The wide temperature range suits industrial environments requiring stable JFET behavior under thermal stress.

Part Context

This part belongs to the family of N-channel JFET chopper transistors manufactured by onsemi. It serves as a discrete semiconductor solution for precision analog signal processing. The device complements other chopper-stabilized components by providing reliable switching capabilities in compact surface-mount or through-hole layouts suitable for consumer and industrial electronics.

Replacement Considerations

The 2N5638 is a documented substitute within the same product family. Verify that the replacement maintains the required Type A depletion mode characteristics and matches the TO-92 package dimensions for mechanical fit.

FAQ

What is the operational mode of the 2N5639G?

It operates in depletion mode as an N-channel JFET.

Is this device suitable for digital logic switching?

No, it is designed for low-level analog switching, sample and hold, and chopper applications rather than digital logic.