SMP4416

Overview

The InterFET SMP4416 is an N-channel Junction Field-Effect Transistor (JFET) utilizing the InterFET N0026S geometry. It operates with a Gate-to-Source Breakdown Voltage of -30V and a Drain-to-Source Saturation Current of 5mA. The device features a Forward Transconductance of 4500µS, Input Capacitance of 4pF, and Output Capacitance of 2pF at 1MHz. Typical noise performance is 4nV/√Hz, with gate leakage typically below 10pA. It is housed in a SOT-23 surface-mount package.

Feature Summary

• Utilizes InterFET N0026S geometry for high gain and low noise performance
• Features extremely low gate leakage current, typically less than 10pA at room temperature
• Provides low input capacitance suitable for high-frequency signal processing
• RoHS compliant construction available in multiple packaging formats

Applications

• Sensitive mixer circuits
• VHF amplifier designs

Procurement Notes

Verify the specific ordering suffix to confirm the required packaging format, as the base part number applies to through-hole, surface mount, and bare die options. Confirm that the selected variant meets the necessary voltage ratings for the target application environment. Ensure compliance with RoHS standards if required by the end product specifications.

Selection Notes

Select the SMP4416 when designing circuits requiring low noise figures and high transconductance at VHF frequencies. Consider the SOT-23 package for space-constrained surface-mount applications. Evaluate the -30V breakdown rating against circuit operating conditions to ensure adequate safety margins for gate-source and drain-source voltages.

Part Context

The SMP4416 is the surface-mount equivalent within the 2N4416 family of N-channel JFETs. While the through-hole variants utilize TO-72 or TO-92 packages, the SMP4416 specifically employs the SOT-23 form factor. This allows designers to maintain consistent electrical characteristics across different mounting technologies without altering the core semiconductor geometry.

Replacement Considerations

Direct functional equivalents include the 2N4416 and PN4416, which share identical electrical parameters but differ in physical package type. The SMP4416A serves as a higher voltage alternative with a -35V breakdown rating.