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Product Detailed Parameters
- Description：MOSFET N-CH 40V 44A LFPAK33
- Series：TrenchMOS™
- Mfr：Nexperia USA Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- FET Type：N-Channel
- Technology：MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss)：40 V
- Current - Continuous Drain (Id) @ 25°C：44A (Tc)
- Drive Voltage (Max Rds On, Min Rds On)：5V
- Rds On (Max) @ Id, Vgs：11mOhm @ 15A, 10V
- Vgs(th) (Max) @ Id：2.1V @ 1mA
- Gate Charge (Qg) (Max) @ Vgs：11.3 nC @ 5 V
- Vgs (Max)：±10V
- Input Capacitance (Ciss) (Max) @ Vds：1211 pF @ 25 V
- FET Feature：-
- Power Dissipation (Max)：55W (Tc)
- Operating Temperature：-55°C ~ 175°C (TJ)
- Grade：Automotive
- Qualification：AEC-Q101
- Mounting Type：Surface Mount
- Supplier Device Package：LFPAK33
- Package / Case：SOT-1210, 8-LFPAK33 (5-Lead)
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Overview
The BUK9M14-40EX is a logic level N-channel MOSFET utilizing TrenchMOS technology in an LFPAK33 (SOT1210) package. It features a drain-source voltage of 40 V and a continuous drain current of 44 A at 25 °C mounting base temperature. The device exhibits a maximum on-state resistance of 14 mΩ at VGS = 5 V and ID = 15 A. Total power dissipation reaches 55 W under specified conditions, with a junction temperature range spanning from -55 °C to 175 °C.
Feature Summary
- Compliant with the AEC-Q101 automotive qualification standard for high performance applications.
- Capable of handling repetitive avalanche energy ratings for robust operation.
- Features true logic level gate drive characteristics with a threshold voltage greater than 0.5 V at 175 °C.
Applications
- 12 V automotive systems
- Motors, lamps and solenoid control
- Transmission control
- Ultra high performance power switching
Procurement Notes
Verify the specific ordering suffix against official Nexperia documentation to confirm packaging details and tape-and-reel specifications. Ensure the component meets the required AEC-Q101 qualification status for your target application environment. Cross-reference the marking code 91440E with the datasheet to authenticate the part upon receipt.
Selection Notes
Select this component when low conduction losses are critical due to its low on-state resistance. The logic level gate drive capability allows direct interfacing with standard microcontrollers or drivers without requiring additional level shifting circuitry. The 175 °C junction rating provides thermal headroom for demanding environments.
Part Context
This device belongs to the BUK9M14-40E series, representing Nexperia's High Performance Automotive (HPA) TrenchMOS technology line. It is designed specifically for automotive-grade reliability while maintaining compact surface-mount dimensions suitable for space-constrained PCB layouts.
Replacement Considerations
Direct replacements within the same family include BUK9M19-60EX and BUK9M24-40EX. Verify pin compatibility and electrical parameters before substitution.
