CMPF4392 TR PBFREE

Overview

The CMPF4392 TR PBFREE is a surface-mount silicon N-channel JFET manufactured by Central Semiconductor Corp. It utilizes an epitaxial planar process and is housed in an SOT-23 package. The device supports a maximum drain-source voltage of 40 V and dissipates up to 350 mW at 25°C. Key electrical parameters include a typical on-state resistance of 60 Ω, a gate-source cutoff voltage ranging from 2.0 V to 5.0 V, and an input capacitance of 14 pF. The component operates within a junction temperature range of -65°C to +150°C.

Feature Summary

• Designed for switching applications using an epitaxial planar process
• Encapsulated in a compact SOT-23 surface mount package
• Features low input capacitance for high-frequency performance

Applications

• General-purpose switching circuits
• Low-noise amplifier stages
• Signal routing and multiplexing

Procurement Notes

Verify the specific ordering suffix against the manufacturer's documentation to confirm plating specifications. The 'TR' suffix indicates tape and reel packaging, while 'PBFREE' denotes lead-free plating. Confirm that the requested quantity aligns with standard reel sizes, such as 3,000 pieces per 7-inch reel, to ensure proper handling and storage conditions during procurement.

Selection Notes

Select this component when a small-form-factor N-channel JFET is required for switching or amplification. Ensure the circuit design accommodates the specified 40 V breakdown limits and 350 mW power dissipation. Consider the thermal resistance of 357 °C/W for heat management in dense PCB layouts. Verify that the 60 Ω on-resistance meets the signal integrity requirements of the application.

Part Context

This part belongs to the CMPF439x series, which includes the CMPF4391 and CMPF4393 variants. These devices share the same SOT-23 package and general construction but differ in their specific electrical characteristics, particularly regarding gate-source cutoff voltage and on-state resistance. The CMPF4392 serves as the middle option in terms of threshold voltage among the three.

Replacement Considerations

Direct substitutes include the MMBF4392LT1G from onsemi. When evaluating alternatives, compare the gate-source cutoff voltage and on-resistance values to ensure compatibility with existing biasing networks. Verify that the replacement device maintains the same pinout configuration and package dimensions for direct footprint substitution.