SST94 SOT-89 3L ROHS

Overview

The SST94 is a general-purpose single P-channel JFET manufactured by Linear Integrated Systems, Inc. in an SOT-89 package. It features high gain with typical transconductance of 22 mS and low capacitance at 32 pF reverse transfer. The device supports gate-to-source voltages up to 25V and continuous power dissipation of 400mW. Key electrical characteristics include a drain-to-source on resistance of 150 Ω maximum and a gate operating current as low as 50 pA.

Feature Summary

• High input impedance with minimal gate leakage current
• Low capacitance for signal integrity
• High gain performance suitable for amplification

Applications

• General purpose amplification circuits
• Signal processing applications requiring high input impedance
• Low noise analog front ends

Procurement Notes

Verify the specific ordering suffix matches the required package type, as the SST94 designation corresponds to the SOT-89 form factor while the LS94 variant utilizes TO-92 packaging. Confirm RoHS compliance status directly with the manufacturer or authorized distributor documentation prior to procurement to ensure adherence to environmental regulations applicable to your manufacturing process.

Selection Notes

Select this component when designing circuits that require a P-channel JFET with high input impedance and moderate gain. Ensure the design accommodates the specified absolute maximum ratings, particularly the 25V voltage limits and 400mW power dissipation capability. Consider the thermal management requirements associated with the SOT-89 package for continuous operation near maximum ratings.

Part Context

Linear Integrated Systems produces discrete semiconductors using proprietary processes derived from expertise at companies like Intersil and Amelco. The SST94 belongs to their lineup of high-performance general-purpose JFETs, offering alternatives to standard industry components with optimized parameters for specific analog applications.

Replacement Considerations

Consult official datasheets for equivalent N-channel devices such as the LSK190 if polarity inversion is required. Verify pinout compatibility and electrical parameter overlaps before substituting with other P-channel JFETs from different manufacturers.

FAQ

What is the typical transconductance of the SST94?

The typical full conductance transconductance (Gfss) is 22 mS at VDS = -10V and VGS = 0V.

What is the maximum gate-to-source voltage rating?

The absolute maximum gate-to-source voltage (VGS) is rated at 25V.

How does the SST94 differ physically from the LS94?

The SST94 is housed in an SOT-89 package, whereas the LS94 uses a TO-92 package; both share identical electrical characteristics.