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Product Detailed Parameters
- Description：BUK9R4R5-40H/SOT8038/MLPAK56
- Series：*
- Mfr：Nexperia USA Inc.
- Package：Tape & Reel (TR)
- FET Type：-
- Technology：-
- Drain to Source Voltage (Vdss)：-
- Current - Continuous Drain (Id) @ 25°C：-
- Drive Voltage (Max Rds On, Min Rds On)：-
- Rds On (Max) @ Id, Vgs：-
- Vgs(th) (Max) @ Id：-
- Gate Charge (Qg) (Max) @ Vgs：-
- Vgs (Max)：-
- Input Capacitance (Ciss) (Max) @ Vds：-
- FET Feature：-
- Power Dissipation (Max)：-
- Operating Temperature：-
- Grade：-
- Qualification：-
- Mounting Type：-
- Supplier Device Package：-
- Package / Case：-
Download product information
Overview
The BUK9R4R5-40HJ is a logic level N-channel MOSFET manufactured by Nexperia. It utilizes Trench 9 technology to achieve low on-resistance within a compact MLPAK56-WF (SOT8038-2) package. The device is qualified to AEC-Q101 standards, supporting operation up to 175 °C. Key electrical characteristics include a drain-source voltage of 40 V and a continuous drain current of 100 A. The typical on-resistance is 4.5 mΩ at 10 V gate drive, with a maximum gate-source voltage rating of ±20 V.
Feature Summary
- Logic level gate architecture enabling direct drive from standard logic interfaces
- Trench 9 superjunction technology for enhanced power density and efficiency
- Automotive qualification compliant with AEC-Q101 reliability standards
- Side-wettable flanks facilitating automated optical inspection
Applications
- Motor drive systems
- Battery protection circuits
- DC-DC conversion modules
Procurement Notes
Verify the specific suffix 'J' against official Nexperia documentation to confirm tape and reel specifications or marking details. Ensure the component matches the MLPAK56-WF footprint requirements for your PCB layout. Cross-reference the datasheet revision date to confirm thermal and electrical parameters remain consistent with your design constraints.
Selection Notes
Select this component when space-constrained designs require high current handling in a small surface-mount footprint. The logic level gate simplifies driver circuitry compared to standard threshold devices. Verify that the 40 V rating provides sufficient headroom for your system's maximum operating voltage under all transient conditions.
Part Context
This part belongs to Nexperia's automotive-grade MOSFET portfolio utilizing advanced Trench 9 superjunction technology. The MLPAK56-WF package offers improved thermal performance and solder joint reliability compared to traditional QFN packages. It is designed for applications demanding high efficiency and robustness in thermally challenging environments.
Replacement Considerations
Consult official Nexperia substitution guides for verified equivalents. Generic replacements may not match the specific AEC-Q101 qualification or the unique side-wettable flank package geometry required for automated assembly.
