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BUK9Y40-55B

N-channel TrenchMOS logic level FET

Logic level N-channel enhancement mode Field-Effect Transistor (FET) in a plastic package using TrenchMOS technology. This product has been designed and qualified to the appropriate AEC standard for use in automotive critical applications.

Orderable parts

Type number Orderable part number Ordering code (12NC) Package Buy from distributors
BUK9Y40-55B BUK9Y40-55B,115 934058367115 SOT669 Order product

Features and benefits

  • Low conduction losses due to low on-state resistance

  • Q101 compliant

  • Suitable for logic level gate drive sources

  • Suitable for thermally demanding environments due to 175 °C rating

Applications

  • 12 V and 24 V loads

  • Automotive systems

  • General purpose power switching

  • Motors, lamps and solenoids

Parametrics

Type numberPackage versionPackage nameProduct statusChannel typeNr of transistorsVDS [max] (V)RDSon [max] @ VGS = 10 V (mΩ)RDSon [max] @ VGS = 5 V (mΩ)RDSon [max] @ VGS = 4.5 V (mΩ)Tj [max] (°C)ID [max] (A)QGD [typ] (nC)Ptot [max] (W)Qr [typ] (nC)VGSth [typ] (V)Automotive qualifiedCiss [typ] (pF)Coss [typ] (pF)Date
BUK9Y40-55BSOT669LFPAK56; Power-SO8ProductionN15536404517526559251.5Y7651232011-01-27

PCB Symbol, Footprint and 3D Model

Model NameDescription

Package

Type numberOrderable part number, (Ordering code (12NC))StatusMarkingPackagePackage informationReflow-/Wave solderingPacking
BUK9Y40-55BBUK9Y40-55B,115
( 9340 583 67115 )
Active94055B
LFPAK56; Power-SO8
(SOT669)
SOT669REFLOW_BG-BD-1
WAVE_BG-BD-1
SOT669_115

Environmental information

Type numberOrderable part numberChemical contentRoHSRHF-indicator
BUK9Y40-55BBUK9Y40-55B,115BUK9Y40-55B
Quality and reliability disclaimer

Documentation (18)

File nameTitleTypeDate
BUK9Y40-55BN-channel TrenchMOS logic level FETData sheet2017-05-29
AN10273Power MOSFET single-shot and repetitive avalanche ruggedness ratingApplication note2022-06-20
AN11158Understanding power MOSFET data sheet parametersApplication note2020-07-06
AN11160Designing RC SnubbersApplication note2023-02-03
AN11156Using Power MOSFET Zth CurvesApplication note2021-01-04
AN11243Failure signature of Electrical Overstress on Power MOSFETsApplication note2017-12-21
AN11158_ZHUnderstanding power MOSFET data sheet parametersApplication note2021-01-04
AN11261RC Thermal ModelsApplication note2021-03-18
AN11599Using power MOSFETs in parallelApplication note2016-07-13
AN10874_ZHLFPAK MOSFET thermal design guide, Chinese versionApplication note2020-04-30
AN11113_ZHLFPAK MOSFET thermal design guide - Part 2Application note2020-04-30
BUK9Y40_55BBUK9Y40-55B Spice modelSPICE model2014-03-03
TN00008Power MOSFET frequently asked questions and answersTechnical note2023-01-12
BUK9Y40-55B_RC_Thermal_ModelBUK9Y40-55B Thermal design modelThermal design2021-01-18
BUK9Y40-55BBUK9Y40-55B Thermal modelThermal model2004-09-26
SOT669_115LFPAK56; Reel pack for SMD, 7"; Q1/T1 product orientationPacking information2022-05-10
REFLOW_BG-BD-1Reflow soldering profileReflow soldering2021-04-06
WAVE_BG-BD-1Wave soldering profileWave soldering2021-09-08

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.

Models

File nameTitleTypeDate
BUK9Y40_55BBUK9Y40-55B Spice modelSPICE model2014-03-03
BUK9Y40-55B_RC_Thermal_ModelBUK9Y40-55B Thermal design modelThermal design2021-01-18
BUK9Y40-55BBUK9Y40-55B Thermal modelThermal model2004-09-26

PCB Symbol, Footprint and 3D Model

Model NameDescription

Ordering, pricing & availability

Type numberOrderable part numberOrdering code (12NC)PackingPacking quantityBuy online
BUK9Y40-55BBUK9Y40-55B,115934058367115SOT669_115- Order product

Sample

As a Nexperia customer you can order samples via our sales organization or directly via our Online Sample Store: https://extranet.nexperia.com.

Sample orders normally take 2-4 days for delivery.

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.

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.