N-channel TrenchMOS logic level FET
Buy from Nexperia
| SKU | Stock* | MOQ | Price per unit** | Quantity |
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Buy from distributors
| Seller | SKU | Stock | MOQ | 1 | 10 | 100 | 1,000 | 10,000 | Purchase |
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| Seller | SKU | Stock | MOQ | 1 | 10 | 100 | 1,000 | 10,000 | Purchase |
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| Seller | SKU | Stock | MOQ | 1 | 10 | 100 | 1,000 | 10,000 | Purchase |
|---|
| Seller | SKU | Stock | MOQ | 1 | 10 | 100 | 1,000 | 10,000 | Purchase |
|---|
| Seller | SKU | Stock | MOQ | 1 | 10 | 100 | 1,000 | 10,000 | Purchase |
|---|
** Displayed price per unit is based on small quantity orders
*** Authorized resellers for overstock, mature, and discontinued products which are warranted for reliability by the reseller, no longer by Nexperia
Features and benefits
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Low conduction losses due to low on-state resistance
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Q101 compliant
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Suitable for logic level gate drive sources
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Suitable for thermally demanding environments due to 175 °C rating
Applications
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12 V and 24 V loads
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Automotive systems
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General purpose power switching
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Motors, lamps and solenoids
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) | 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 qualified | Ciss [typ] (pF) | Coss [typ] (pF) | Date |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| BUK9Y40-55B | SOT669 | LFPAK56; Power-SO8 | Production | N | 1 | 55 | 36 | 40 | 45 | 175 | 26 | 5 | 59 | 25 | 1.5 | Y | 765 | 123 | 2011-01-27 |
PCB Symbol, Footprint and 3D Model
| Model Name | Description |
|---|---|
Package
| Type number | Orderable part number, (Ordering code (12NC)) | Status | Marking | Package | Package information | Reflow-/Wave soldering | Packing |
|---|---|---|---|---|---|---|---|
| BUK9Y40-55B | BUK9Y40-55B,115 ( 9340 583 67115 ) | Active | 94055B |  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 |
|---|---|---|---|---|
| BUK9Y40-55B | BUK9Y40-55B,115 | BUK9Y40-55B |  |  |
Documentation (18)
| File name | Title | Type | Date |
|---|---|---|---|
| BUK9Y40-55B | N-channel TrenchMOS logic level FET | Data sheet | 2017-05-29 |
| AN10273 | Power MOSFET single-shot and repetitive avalanche ruggedness rating | Application note | 2022-06-20 |
| AN11158 | Understanding power MOSFET data sheet parameters | Application note | 2020-07-06 |
| AN11160 | Designing RC Snubbers | Application note | 2023-02-03 |
| AN11156 | Using Power MOSFET Zth Curves | Application note | 2021-01-04 |
| AN11243 | Failure signature of Electrical Overstress on Power MOSFETs | Application note | 2017-12-21 |
| AN11158_ZH | Understanding power MOSFET data sheet parameters | Application note | 2021-01-04 |
| AN11261 | RC Thermal Models | Application note | 2021-03-18 |
| AN11599 | Using power MOSFETs in parallel | Application note | 2016-07-13 |
| 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 |
| BUK9Y40_55B | BUK9Y40-55B Spice model | SPICE model | 2014-03-03 |
| TN00008 | Power MOSFET frequently asked questions and answers | Technical note | 2023-01-12 |
| BUK9Y40-55B_RC_Thermal_Model | BUK9Y40-55B Thermal design model | Thermal design | 2021-01-18 |
| BUK9Y40-55B | BUK9Y40-55B Thermal model | Thermal model | 2004-09-26 |
| 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 |
| 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 |
|---|---|---|---|
| BUK9Y40_55B | BUK9Y40-55B Spice model | SPICE model | 2014-03-03 |
| BUK9Y40-55B_RC_Thermal_Model | BUK9Y40-55B Thermal design model | Thermal design | 2021-01-18 |
| BUK9Y40-55B | BUK9Y40-55B Thermal model | Thermal model | 2004-09-26 |
PCB Symbol, Footprint and 3D Model
| Model Name | Description |
|---|---|
Ordering, pricing & availability
| Type number | Orderable part number | Ordering code (12NC) | Packing | Packing quantity | Buy online |
|---|---|---|---|---|---|
| BUK9Y40-55B | BUK9Y40-55B,115 | 934058367115 | SOT669_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.