U309 TO-18 3L

$6.34

Description：JFET N-CH 25V TO18-3
Series：U309

SKU:41994d214528 Category: JFETs Brand: Linear Integrated Systems, Inc.

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Product introduction

Product Detailed Parameters

Description：JFET N-CH 25V TO18-3
Series：U309
Mfr：Linear Integrated Systems, Inc.
Package：Bulk
FET Type：N-Channel
Voltage - Breakdown (V(BR)GSS)：25 V
Drain to Source Voltage (Vdss)：-
Current - Drain (Idss) @ Vds (Vgs=0)：12 mA @ 10 V
Current Drain (Id) - Max：-
Voltage - Cutoff (VGS off) @ Id：1 V @ 1 nA
Input Capacitance (Ciss) (Max) @ Vds：4pF @ 10V
Resistance - RDS(On)：35 Ohms
Power - Max：500 mW
Operating Temperature：-55°C ~ 150°C (TJ)
Mounting Type：Through Hole
Package / Case：TO-206AA, TO-18-3 Metal Can
Supplier Device Package：TO-18-3
Grade：-
Qualification：-

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U309 TO-18 3L

Overview

The U309 is an N-channel JFET transistor manufactured by Linear Integrated Systems, Inc., housed in a TO-18-3 through-hole package. It serves as a direct replacement for the Siliconix U/J/SST308 series. The device is engineered for low-signal amplification and switching applications, offering high-frequency performance with a maximum power rating of 500 mW. Key electrical characteristics include a gain (Gpg) of 11.5 dB and a noise figure (NF) of 2.7 dB, supporting its use in sensitive RF circuits.

Feature Summary

Direct replacement for the discontinued Siliconix U/J/SST308 series
Designed for low-signal amplification and switching applications
Outstanding high-frequency gain characteristics
Low high-frequency noise figure

Applications

Low-signal amplification
High-frequency switching
RF circuit design

Procurement Notes

Verify that the component matches the TO-18-3 package specification and confirms compatibility with the original Siliconix U/J/SST308 series requirements. Ensure the manufacturer designation aligns with Linear Integrated Systems, Inc. documentation to guarantee correct pinout and electrical parameters for direct substitution in existing designs.

Selection Notes

Select this component when a direct substitute for the Siliconix U/J/SST308 series is required for N-channel JFET applications. Consider its specific high-frequency gain and noise figure metrics if the design demands precise signal integrity in low-signal environments. Confirm that the TO-18-3 through-hole form factor fits the target PCB layout constraints.

Part Context

This part belongs to the JFET category from Linear Integrated Systems, Inc. It continues the lineage of the former Siliconix U/J/SST308 series, maintaining established performance standards for high-frequency operations. The TO-18-3 package provides a robust mechanical solution for through-hole mounting in various electronic assemblies requiring reliable N-channel junction field-effect transistors.