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Analog & Logic ICs

Automotive qualified products (AEC-Q100/Q101)

BUK9Y1R6-40H

N-channel 40 V, 1.6 mΩ logic level MOSFET in LFPAK56

Automotive qualified N-channel MOSFET using the latest Trench 9 low ohmic superjunction technology, housed in a robust LFPAK56 package. This product has been fully designed and qualified to meet AEC-Q101 requirements delivering high performance and endurance.

Features and benefits

  • Fully automotive qualified to AEC-Q101:
    • 175 °C rating suitable for thermally demanding environments
  • Trench 9 Superjunction technology:
    • Reduced cell pitch enables enhanced power density and efficiency with lower RDSon in same footprint
    • Improved SOA and avalanche capability compared to standard TrenchMOS
    • Tight VGS(th) limits enable easy paralleling of MOSFETs
  • LFPAK Gull Wing leads:
    • High Board Level Reliability absorbing mechanical stress during thermal cycling, unlike traditional QFN packages
    • Visual (AOI) soldering inspection, no need for expensive x-ray equipment
    • Easy solder wetting for good mechanical solder joint
  • LFPAK copper clip technology:
    • Improved reliability, with reduced Rth and RDSon
    • Increases maximum current capability and improved current spreading

Applications

  • 12 V automotive systems

  • Motors, lamps and solenoid control

  • Start-Stop micro-hybrid applications

  • Transmission control

  • Ultra high performance power switching

Parametrics

Type number Package version Package name Product status Channel type Nr of transistors VDS [max] (V) RDSon [max] @ VGS = 10 V (mΩ) RDSon [max] @ VGS = 4.5 V; @25 C (mΩ) Tj [max] (°C) ID [max] (A) QGD [typ] (nC) QG(tot) [typ] @ VGS = 4.5 V (nC) QG(tot) [typ] @ VGS = 10 V (nC) Ptot [max] (W) Qr [typ] (nC) VGSth [typ] (V) Automotive qualified Ciss [typ] (pF) Coss [typ] (pF) Release date
BUK9Y1R6-40H SOT669 LFPAK56; Power-SO8 Production N 1 40 1.6 2.2 175 120 8.3 34.9 77 294 30.6 1.62 Y 5402 1022 2018-05-07

Package

Type number Orderable part number, (Ordering code (12NC)) Status Marking Package Package information Reflow-/Wave soldering Packing
BUK9Y1R6-40H BUK9Y1R6-40HX
(934660361115)		 Active 91H640 SOT669
LFPAK56; Power-SO8
(SOT669) 		SOT669 REFLOW_BG-BD-1
WAVE_BG-BD-1
SOT669_115

Environmental information

Type number Orderable part number Chemical content RoHS RHF-indicator
BUK9Y1R6-40H BUK9Y1R6-40HX BUK9Y1R6-40H rohs rhf
Quality and reliability disclaimer

Series

Documentation (15)

File name Title Type Date
BUK9Y1R6-40H N-channel 40 V, 1.6 mΩ logic level MOSFET in LFPAK56 Data sheet 2025-01-10
AN90063 Questions about package outline drawings Application note 2025-06-13
SOT669 3D model for products with SOT669 package Design support 2017-06-30
Nexperia_package_poster Nexperia package poster Leaflet 2020-05-15
LFPAK56_POWER-SO8_SOT669_mk plastic, single-ended surface-mounted package; 4 terminals; 4.9 mm x 4.45 mm x 1 mm body Marcom graphics 2017-01-28
BUK9xxxx-40H_LTspice_V3 BUK9xxxx-40H Precision ElectroThermal (PET) LTspice model PET SPICE model 2022-09-26
SOT669 plastic, single-ended surface-mounted package; 4 terminals Package information 2025-03-20
SOT669_115 LFPAK56; Reel pack for SMD, 7"; Q1/T1 product orientation Packing information 2022-05-10
REFLOW_BG-BD-1 Reflow soldering profile Reflow soldering 2021-04-06
BUK9Y1R6-40H BUK9Y1R6-40H SPICE model SPICE model 2018-05-14
TN00008 Power MOSFET frequently asked questions and answers Technical note 2025-07-16
BUK9Y1R6-40H_RCthermal BUK9Y1R6-40H RC thermal Thermal design 2018-05-15
BUK9Y1R6-40H_RCth BUK9Y1R6-40H thermal model Thermal model 2018-05-14
BUK9Y1R6-40H_Zth BUK9Y1R6-40H RC thermal model Thermal model 2018-05-14
WAVE_BG-BD-1 Wave soldering profile Wave soldering 2021-09-08

Support

If you are in need of design/technical support, let us know and fill in the answer form we'll get back to you shortly.


Longevity

The Nexperia Longevity Program is aimed to provide our customers information from time to time about the expected time that our products can be ordered. The NLP is reviewed and updated regularly by our Executive Management Team. View our longevity program here.


Models

File name Title Type Date
BUK9xxxx-40H_LTspice_V3 BUK9xxxx-40H Precision ElectroThermal (PET) LTspice model PET SPICE model 2022-09-26
BUK9Y1R6-40H BUK9Y1R6-40H SPICE model SPICE model 2018-05-14
BUK9Y1R6-40H_RCthermal BUK9Y1R6-40H RC thermal Thermal design 2018-05-15
BUK9Y1R6-40H_RCth BUK9Y1R6-40H thermal model Thermal model 2018-05-14
BUK9Y1R6-40H_Zth BUK9Y1R6-40H RC thermal model Thermal model 2018-05-14
SOT669 3D model for products with SOT669 package Design support 2017-06-30

Ordering, pricing & availability

Type number Orderable part number Ordering code (12NC) Status Packing Packing Quantity Buy online
BUK9Y1R6-40H BUK9Y1R6-40HX 934660361115 Active SOT669_115 1,500

Sample

As a Nexperia customer you can order samples via our sales organization.

If you do not have a direct account with Nexperia our network of global and regional distributors is available and equipped to support you with Nexperia samples. Check out the list of official distributors.

How does it work?

The interactive datasheets are based on the Nexperia MOSFET precision electrothermal models. With our interactive datasheets you can simply specify your own conditions interactively. Start by changing the values of the conditions. You can do this by using the sliders in the condition fields. By dragging the sliders you will see how the MOSFET will perform at the new conditions set.

Interactive datasheet

Orderable parts

Type number Orderable part number Ordering code (12NC) Package Buy from distributors
BUK9Y1R6-40H BUK9Y1R6-40HX 934660361115 SOT669 Order product