MPF102_D74Z

Overview

The MPF102_D74Z is an N-channel RF amplifier and small-signal JFET manufactured by onsemi (formerly Fairchild Semiconductor). It is housed in a TO-92G package. The device features a drain-gate voltage rating of 25 V and a gate-source breakdown voltage of -25 V. Electrical characteristics include a zero-gate voltage drain current (IDSS) ranging from 2.0 to 20 mA, with a typical forward transconductance (gfs) of 7500 μS at 1 kHz. Input capacitance is typically 7.0 pF, and reverse transfer capacitance is 3.0 pF at 1 MHz. Total device dissipation is 350 mW, with a junction-to-ambient thermal resistance of 357 °C/W.

Feature Summary

• Designed for electronic switching applications such as low ON resistance analog switching.
• Optimized for use as an N-channel RF amplifier.

Applications

• Low ON resistance analog switching
• RF amplification

Procurement Notes

Verify the manufacturer origin carefully, as this component was originally produced by Fairchild Semiconductor before its acquisition by onsemi. Confirm that the specific D74Z suffix corresponds to the required packaging and tape-and-reel specifications if applicable. Ensure the source documentation matches the Rev. G datasheet provided to validate the electrical parameters against your design requirements.

Selection Notes

Select this component when a high-transconductance N-channel JFET is required for RF or analog switching tasks. The IDSS range of 2.0 to 20 mA allows for flexibility in biasing circuits. Consider the TO-92G package constraints for thermal management, given the 350 mW dissipation limit. Verify that the -25 V gate-source voltage rating meets the signal swing requirements of the target application.

Part Context

This part belongs to the MPF102 family of N-channel JFETs. It is sourced from Process 50 manufacturing lines. The component is listed under Fairchild's legacy product portfolio, now managed under onsemi. It serves as a general-purpose small-signal transistor suitable for audio and RF stages where low noise and high gain are prioritized.

Replacement Considerations

Public confirmed substitute part numbers: None identified in verified sources.