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)

BUK9840-55

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.

This product has been discontinued

Alternatives

Features and benefits

  • AEC Q101 compliant
  • Electrostatically robust due to integrated protection diodes
  • Low conduction losses due to low on-state resistance

Applications

  • Automotive and general purpose power switching

Parametrics

Type number Package version Package name Product status Channel type Nr of transistors VDS [max] (V) RDSon [max] @ VGS = 5 V (mΩ) Tj [max] (°C) ID [max] (A) Ptot [max] (W) Qr [typ] (nC) VGSth [typ] (V) Automotive qualified Ciss [typ] (pF) Coss [typ] (pF) Release date
BUK9840-55 SOT223 SC-73 End of life N 1 55 40 150 10.7 8.3 300 1.5 Y 1050 205 2011-02-10

Package

All type numbers in the table below are discontinued.

Type number Orderable part number, (Ordering code (12NC)) Status Marking Package Package information Reflow-/Wave soldering Packing
BUK9840-55 BUK9840-55/CUX
(934068284115)		 Withdrawn / End-of-life 94055 SOT223
SC-73
(SOT223) 		SOT223 REFLOW_BG-BD-1
WAVE_BG-BD-1
SOT223_115
BUK9840-55,115
(934045320115)		 Obsolete 94055 Empty Empty SOT223_115

Environmental information

All type numbers in the table below are discontinued.

Type number Orderable part number Chemical content RoHS RHF-indicator
BUK9840-55 BUK9840-55/CUX BUK9840-55 rohs rhf rhf
BUK9840-55 BUK9840-55,115 BUK9840-55 rohs rhf rhf
Quality and reliability disclaimer

Documentation (18)

File name Title Type Date
BUK9840-55 N-channel TrenchMOS logic level FET Data sheet 2016-03-16
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
AN11158 Understanding power MOSFET data sheet parameters Application note 2020-07-06
AN11158_ZH Understanding power MOSFET data sheet parameters 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
SOT223 3D model for products with SOT223 package Design support 2019-01-22
Nexperia_package_poster Nexperia package poster Leaflet 2020-05-15
SC-73_SOT223_mk plastic, surface-mounted package with increased heatsink; 4 leads; 4.6 mm pitch; 6.5 mm x 3.5 mm x 1.65 mm body Marcom graphics 2017-01-28
SOT223 plastic, surface-mounted package with increased heatsink; 4 leads; 2.3 mm pitch; 6.5 mm x 3.5 mm x 1.65 mm body Package information 2022-05-30
REFLOW_BG-BD-1 Reflow soldering profile Reflow soldering 2021-04-06
TN00008 Power MOSFET frequently asked questions and answers Technical note 2024-08-09
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
SOT223 3D model for products with SOT223 package Design support 2019-01-22

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