BSS84AKS/ZLX

Overview

The BSS84AKS/ZLX is a dual P-channel enhancement mode Field-Effect Transistor (FET) manufactured by Nexperia USA Inc. It utilizes Trench MOSFET technology to achieve logic-level compatibility and very fast switching speeds within an ultra-small SOT666 surface-mount package. The device features a drain-source voltage rating of 50 V and a continuous drain current of 170 mA. Key electrical parameters include a maximum on-resistance of 7.5 Ohms at a gate-source voltage of -4.5 V, a gate charge of 400 pC, and an input capacitance of 23 pF. The component operates across a temperature range of -55 °C to +150 °C junction temperature.

Feature Summary

• Dual P-channel configuration in an ultra-small leaded SOT666 package
• Logic-level compatible for direct interface with standard logic outputs
• Very fast switching characteristics enabled by Trench MOSFET technology
• ESD protection rated up to 1 kV

Applications

• Relay driver circuits
• High-speed line drivers
• High-side load switches
• General switching circuits

Procurement Notes

Verify the specific suffix ZLX against official Nexperia documentation to confirm tape-and-reel specifications or regional manufacturing origin. Ensure the ordering part number matches the required packaging format. Confirm that the SOT666 package dimensions align with the target PCB footprint design constraints before finalizing procurement.

Selection Notes

Select this component when space-constrained designs require dual P-channel switching capabilities. The low gate charge supports high-frequency operation, while the 50 V rating suits low-voltage signal processing. Verify that the 7.5 Ohm on-resistance meets the thermal dissipation requirements for the intended load current within the specified operating temperature range.

Part Context

This device belongs to Nexperia's BSS84AK series of small-signal MOSFETs. It shares architectural similarities with the BSS84AKM single-channel variant but integrates two channels into one compact footprint. The series leverages Trench technology to optimize the balance between switching speed and conduction losses for portable and consumer electronics applications.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Engineers should consult official Nexperia cross-reference tools or datasheets for equivalent devices such as the BSS84AKV or BSS84AKM, ensuring pinout and electrical parameter compatibility.