NXP – 40V MOSFET offers 175°C maximum temperature rating


The BUK7M6R3-40E from NXP Semiconductors is an N-channel MOSFET suited to automotive applications and which has a maximum 40V rating across a junction-temperature range of 25°C to the maximum 175°C.

The device, housed in an LFPAK33 (Power33) package, benefits from the use of NXP’s advanced TrenchMOS® technology. It is described as having a true standard-level gate, featuring a gate-source threshold voltage rating of 1V minimum at a junction temperature 175°C. This threshold-voltage value rises to a minimum of 2.4V when the junction temperature falls to 25°C.


The BUK7M6R3-40E offers high performance in switching operations, thanks to its low on-resistance of 5.2mΩ when sourcing a drain current of 20A. This low on-resistance value results in low conduction losses and helps the user to achieve high energy efficiency.

Non-repetitive drain-source avalanche energy is rated at a maximum 58.8mJ.


  • AEC-Q101 qualified
  • Repetitive avalanche rated
  • Operating junction-temperature range:
    -55°C to 175°C


  • 12V automotive systems
  • Motors
  • Lamps
  • Solenoid control
  • Transmission control
  • Power-switching circuits