Product parameter：
| VB Package |
Configuration |
VDS(V) |
VGS |
Vthyp（V） |
ID(A) |
Rds2.5 |
Rds4.5 |
Rds10 |
Technology |
| DFN8(3X3) |
Single-N |
40V |
|
2.5V |
40A |
|
11(mΩ) |
7.7(mΩ) |
SGT |
| VB Package |
Configuration |
VCE |
VGE |
VGEth(V) |
VCEsat15V |
ICE |
Technology |
| DFN8(3X3) |
Single-N |
|
|
|
|
|
SGT |
| VB Package |
Configuration |
VDS(V) |
VGS |
Vthyp（V） |
ID(A) |
Rds18 |
Technology |
| DFN8(3X3) |
Single-N |
40V |
|
2.5V |
40A |
|
SGT |
| VB Package |
Configuration |
VDS(V) |
VGS |
Vthyp（V） |
ID(A) |
Rds6 |
Technology |
| DFN8(3X3) |
Single-N |
40V |
|
2.5V |
40A |
|
SGT |
| VB Package |
Polarity |
Vz / VR |
Pd |
VF |
IF |
IR |
Cd |
Type |
| DFN8(3X3) |
Single-N |
|
|
|
|
|
|
|
- Drain-Source Voltage (VDS): 40V, covering 12V/24V/36V systems, with ample safety margin
- Gate-Source Voltage (VGS): ±20V, compatible with various drive voltages
- Threshold Voltage (Vth): 2.5V, clear switching characteristics, strong anti-interference capability
- On-Resistance RDS(on): 11mΩ (VGS=4.5V), 7.7mΩ (VGS=10V), extremely low loss at high current
- Continuous Drain Current (ID): 40A, high current in a small package
- Technology: SGT (Shielded Gate Trench), excellent figure of merit, balanced switching and conduction losses
Domain and module applications：
- High-Current DC-DC Buck/Boost Modules – As a synchronous rectifier or main switch, its ultra-low 7.7mΩ on-resistance reduces heat generation and improves conversion efficiency.
- Motor Drive Control – Suitable for power tools, drones, and robot motor speed control. The 40V withstand voltage and 40A current capability easily handle stall and surge conditions.
- Battery Protection Boards / Power Battery Management – Enables fast disconnection in charge/discharge circuits. Low internal resistance reduces voltage drop, extending battery life.
- On-Board Power Systems – Withstands 12V/24V vehicle voltage fluctuations, providing stable power switching for lights, sensors, and infotainment systems.
- Server Power Supplies / Communication Power Supplies – The high-power-density package is suitable for compact boards, and SGT technology ensures dynamic performance under high-frequency switching.
- Electric Bicycle / Self-Balancing Scooter Controllers – Works with low-voltage, high-current battery packs to achieve high torque output and smooth speed control. One-sentence summary: BUK7Q9R5-40HJ-VB combines 40V/40A hard power and 7.7mΩ ultra-low on-resistance in a small DFN8 package, making it an efficiency tool for high-power-density power and motor control applications.
* Please note: the above is only an example application scenario, the specific application depends on the requirements and conditions of the system design. When using this device, consult its data sheet for detailed technical specifications and features
Technical support：
* If you have any questions about the product, please fill out the form to submit, we will reply you within 24 hours
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