BUK9K49-80LX

Overview

The Nexperia BUK9K49-80L is a dual N-channel logic level MOSFET housed in an LFPAK56D (SOT1205) package. It integrates two silicon dies within a single component to optimize board space. The device supports drain-source voltages up to 80 V and continuous drain currents of 17 A at 25 °C mounting base temperature. It features a maximum on-state resistance of 48.5 mΩ at VGS = 10 V and 25 °C. The product is qualified to the AEC-Q101 standard for automotive applications operating at junction temperatures up to 175 °C.

Feature Summary

• Dual MOSFET configuration integrating two silicon dies in one LFPAK56D package for significant space saving
• Automotive qualification to AEC-Q101 standard with operation suitable for thermally demanding environments up to 175 °C
• Trench12 MOSFET technology enabling efficient switching with soft body-diode recovery characteristics

Applications

• 12 V, 24 V and 48 V automotive systems
• Motor, lighting, and solenoid control
• Transmission control
• LED lighting
• Circuit protection

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation before procurement. Confirm that the required package variant matches the LFPAK56D specification. Ensure the design accounts for the thermal resistance characteristics defined in the datasheet to maintain safe operating temperatures during operation.

Selection Notes

Select this component when space-constrained automotive designs require dual N-channel switching capabilities. The low on-state resistance and logic-level gate drive compatibility make it suitable for high-efficiency power management. Verify that the PCB layout supports the side-wettable flanks to ensure robust solder joint formation and reliable automatic optical inspection results.

Part Context

This device belongs to the Nexperia BUK9K series of dual logic level MOSFETs. It utilizes Trench12 technology to achieve improved performance metrics compared to previous generations. The LFPAK56D package provides enhanced thermal dissipation capabilities relative to standard surface-mount packages, supporting its use in high-power automotive applications.

Replacement Considerations

Direct replacements include BUK9K49-80E and BUK9K49-80EX. Verify pinout compatibility and thermal characteristics when substituting these variants.