The NXP BUK9Y40-55B/C1 is a high-efficiency, automotive-grade Power MOSFET designed to meet the rigorous demands of modern automotive applications. This product is part of NXP's portfolio of low-voltage power MOSFETs which are recognized for their outstanding performance in terms of switching speed, robustness, and energy efficiency.

Key Features

• Low On-State Resistance (R<sub>DS(on)): This device offers an exceptionally low on-state resistance, which translates to reduced conduction losses and improved overall efficiency in high-current applications.
• High-Speed Switching: The BUK9Y40-55B/C1 is designed for fast switching, enabling high-frequency operation while minimizing switching losses, which is crucial for power conversion applications.
• Thermal Management: With an excellent thermal performance, this MOSFET ensures reliability and longevity even under high-temperature conditions typical in automotive environments.
• Automotive Qualified: Meeting the AEC-Q101 standard, the BUK9Y40-55B/C1 is suitable for automotive applications, ensuring performance and durability in harsh conditions.
• Robust Package: Enclosed in a LFPAK56 (Power-SO8) package, it is not only space-efficient but also rugged, withstanding mechanical stress and conducive to good thermal conduction.

Applications

The NXP BUK9Y40-55B/C1 MOSFET is ideal for a wide range of automotive applications, including:

• Motor drives for power steering, cooling fans, and pumps
• DC/DC converters for power supply modules
• Load switches for lighting and advanced driver-assistance systems (ADAS)
• High-speed switching applications requiring energy efficiency and thermal performance

Specifications

Parameter Value Drain-Source Voltage (V<sub>DS) 55 V Continuous Drain Current (I<sub>D) 40 A Power Dissipation (P<sub>D) 59 W Operating Temperature Range -55°C to +175°C

The BUK9Y40-55B/C1 is a testament to NXP's commitment to providing innovative, robust, and high-performance components for the automotive industry, ensuring vehicles are safer, greener, and more connected.