NDS9945

FET, MOSFET Arrays Overview

The NDS9945 is a dual N-channel enhancement mode power field-effect transistor manufactured by onsemi. It utilizes high cell density DMOS technology to minimize on-state resistance and optimize switching performance. The device features a continuous drain current of 3.3A at 25°C with a maximum drain-source voltage of 60V. Key electrical parameters include a maximum on-resistance of 100mΩ at VGS=10V and 200mΩ at VGS=4.5V. It operates within a junction temperature range of -55°C to 150°C and is housed in an 8-SOIC surface-mount package.

FET, MOSFET Arrays Feature Summary

• Dual N-Channel Configuration
• High Cell Density DMOS Technology
• Surface Mount Packaging

FET, MOSFET Arrays Applications

• Low Voltage Power Management
• Half-Bridge Motor Control
• Battery Powered Circuits

FET, MOSFET Arrays Procurement Notes

Verify the specific manufacturer origin, as the NDS9945 was originally developed by Fairchild Semiconductor prior to its acquisition by onsemi. Confirm that the component meets RoHS compliance standards for the intended market. Ensure the part number suffix matches the required tape and reel or tube packaging format for automated assembly processes.

FET, MOSFET Arrays Selection Notes

Select this component for applications requiring low on-resistance and fast switching speeds in compact designs. The dual configuration allows for efficient half-bridge implementations without occupying excessive board space. Verify that the gate drive voltage supports the specified RDS(on) thresholds for optimal efficiency.

FET, MOSFET Arrays Part Context

This component belongs to the NDS99xx series of dual MOSFETs from onsemi. It shares architectural similarities with other devices in the family, such as the NDS9958, but offers higher voltage ratings suitable for 12V systems. The series is designed for portable electronics and battery-operated equipment where size and efficiency are critical constraints.

FET, MOSFET Arrays Replacement Considerations

The SI9945DY is a direct functional equivalent from Vishay Semiconductors. Other potential substitutes include the SQ9945AEY-T1 from Vishay. Verify pinout compatibility and thermal characteristics before implementing any cross-manufacturer replacement.