Bipolar transistors

Diodes

ESD protection, TVS, filtering and signal conditioning

MOSFETs

SiC MOSFETs

GaN FETs

IGBTs

Analog & Logic ICs

Automotive qualified products (AEC-Q100/Q101)

BUK9K18-40E

Dual N-channel 40 V, 19.5 mΩ logic level MOSFET

Dual logic level N-channel MOSFET in an LFPAK56D (Dual Power-SO8) package using TrenchMOS technology. This product has been designed and qualified to AEC-Q101 standard for use in high performance automotive applications.

Features and benefits

  • Dual MOSFET

  • Q101 Compliant

  • Repetitive avalanche rated

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

  • True logic level gate with VGS(th) rating of greater than 0.5 V at 175 °C

Applications

  • 12 V Automotive systems

  • Motors, lamps and solenoid control

  • 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 = 5 V (mΩ) Tj [max] (°C) ID [max] (A) QGD [typ] (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
BUK9K18-40E SOT1205 LFPAK56D; Dual LFPAK Production N 2 40 16 19.5 175 30 3 14.5 38 16.2 1.7 Y 796 137 2012-07-23

Package

Type number Orderable part number, (Ordering code (12NC)) Status Marking Package Package information Reflow-/Wave soldering Packing
BUK9K18-40E BUK9K18-40E,115
(934067072115)		 Active 91840E SOT1205
LFPAK56D; Dual LFPAK
(SOT1205) 		SOT1205 REFLOW_BG-BD-1
WAVE_BG-BD-1
SOT1205_115

Boards

Part number Description Type Quick links Shop link
NXP FS85 Functional safety
NXP FS85 Functional safety
Description
For ADAS and automotive electrification, functional safety is increasingly vital. NXP's evaluation board for the FS86 Safety SBC for domain control (ASIL B and D) highlights it's power capability, the safety integration and system scalability of domain controller applications to address multiple MCU requirements. Several Nexperia parts feature on this board.
Type
Reference design
Quick links
Shop link

Environmental information

Type number Orderable part number Chemical content RoHS RHF-indicator
BUK9K18-40E BUK9K18-40E,115 BUK9K18-40E rohs rhf
Quality and reliability disclaimer

Series

Documentation (23)

File name Title Type Date
BUK9K18-40E Dual N-channel 40 V, 19.5 mΩ logic level MOSFET Data sheet 2018-04-05
AN10273 Power MOSFET single-shot and repetitive avalanche ruggedness rating Application note 2022-06-20
AN10874_ZH LFPAK MOSFET thermal design guide, Chinese version Application note 2020-04-30
AN11113_ZH LFPAK MOSFET thermal design guide - Part 2 Application note 2020-04-30
AN11156 Using Power MOSFET Zth Curves Application note 2021-01-04
AN11160 Designing RC Snubbers Application note 2024-10-21
AN11243 Failure signature of Electrical Overstress on Power MOSFETs Application note 2017-12-21
AN11261 RC Thermal Models Application note 2021-03-18
AN11599 Using power MOSFETs in parallel Application note 2016-07-13
AN90003 LFPAK MOSFET thermal design guide Application note 2023-08-22
SOT1205 3D model for products with SOT1205 package Design support 2017-06-30
nexperia_document_leaflet_LFPAK56D_factsheet_LR_201708 LFPAK56D the ultimate dual MOSFET Leaflet 2017-08-17
Nexperia_package_poster Nexperia package poster Leaflet 2020-05-15
LFPAK56D_SOT1205_mk plastic, single ended surface mounted package (LFPAK56D); 8 leads; 1.27 mm pitch; 4.7 mm x 5.3 mm x 1.05 mm body Marcom graphics 2017-01-28
BUK9xxxx-40E_LTspice_V3 BUK9xxxx-40E Precision ElectroThermal (PET) LTspice model PET SPICE model 2022-12-14
SOT1205 plastic, single ended surface mounted package (LFPAK56D); 8 leads Package information 2022-03-11
SOT1205_115 LFPAK56D; Reel pack for SMD, 7''; Q1/T1 product orientation Packing information 2021-01-11
REFLOW_BG-BD-1 Reflow soldering profile Reflow soldering 2021-04-06
BUK9K18-40E BUK9K18-40E Spice model SPICE model 2012-09-12
TN00008 Power MOSFET frequently asked questions and answers Technical note 2024-08-09
BUK9K18-40E_RC_Thermal_Model BUK9K18-40E Thermal design model Thermal design 2021-01-18
BUK9K18-40E BUK9K18-40E Thermal model Thermal model 2012-09-03
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.

Models

File name Title Type Date
BUK9xxxx-40E_LTspice_V3 BUK9xxxx-40E Precision ElectroThermal (PET) LTspice model PET SPICE model 2022-12-14
BUK9K18-40E BUK9K18-40E Spice model SPICE model 2012-09-12
BUK9K18-40E_RC_Thermal_Model BUK9K18-40E Thermal design model Thermal design 2021-01-18
BUK9K18-40E BUK9K18-40E Thermal model Thermal model 2012-09-03
SOT1205 3D model for products with SOT1205 package Design support 2017-06-30

Ordering, pricing & availability

Type number Orderable part number Ordering code (12NC) Status Packing Packing Quantity Buy online
BUK9K18-40E BUK9K18-40E,115 934067072115 Active SOT1205_115 1,500 Order product

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
BUK9K18-40E BUK9K18-40E,115 934067072115 SOT1205 Order product