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BUK7208-40B,118-VB Product details
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BUK7208-40B,118-VB is a Single N-MOS deeply optimized for low-voltage, high-current power switching scenarios. Trench technology balances extremely low conduction loss with high switching reliability, and the TO252 package strikes a good balance between heat dissipation capability and board-level space. The combination of 40V withstand voltage, 85A current-carrying capacity, and 5mΩ on-resistance makes it a preferred device for high-intensity applications such as battery protection, motor drives, and power conversion, especially suitable for industrial-grade products requiring high current throughput and low thermal dissipation.
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Product parameter：
| VB Package | Configuration | VDS(V) | VGS | Vthyp（V） | ID(A) | Rds2.5 | Rds4.5 | Rds10 | Technology |
|---|---|---|---|---|---|---|---|---|---|
| TO252 | Single-N | 40V | 2.5V | 85A | 6(mΩ) | 5(mΩ) | Trench |
| VB Package | Configuration | VCE | VGE | VGEth(V) | VCEsat15V | ICE | Technology |
|---|---|---|---|---|---|---|---|
| TO252 | Single-N | Trench |
| VB Package | Configuration | VDS(V) | VGS | Vthyp（V） | ID(A) | Rds18 | Technology |
|---|---|---|---|---|---|---|---|
| TO252 | Single-N | 40V | 2.5V | 85A | Trench |
| VB Package | Configuration | VDS(V) | VGS | Vthyp（V） | ID(A) | Rds6 | Technology |
|---|---|---|---|---|---|---|---|
| TO252 | Single-N | 40V | 2.5V | 85A | Trench |
| VB Package | Polarity | Vz / VR | Pd | VF | IF | IR | Cd | Type |
|---|---|---|---|---|---|---|---|---|
| TO252 | Single-N |
VDS=40V: Suitable for 12V/24V/36V systems, providing ample headroom for voltage spikes, reducing avalanche breakdown risk.
VGS=±20V: Compatible with 4.5V~12V logic levels, can directly connect to controller/PWM drive, simplifying gate drive circuitry.
Vth=2.5V (Typical): Moderate threshold voltage, balancing low-voltage drive capability and noise immunity, suitable for various drive topologies.
RDS(on)=5mΩ @ VGS=10V / 6mΩ @ VGS=4.5V: Ultra-low on-resistance, significantly reduces temperature rise under full load, can reduce or eliminate additional heatsinks.
ID=85A: Large continuous current margin, capable of handling peak load demands such as motor stall and power supply surges.
Package TO252: Compatible with mainstream DPAK pads, low thermal resistance, high current capacity, suitable for medium power density layouts, and facilitates automated SMT assembly.
VGS=±20V: Compatible with 4.5V~12V logic levels, can directly connect to controller/PWM drive, simplifying gate drive circuitry.
Vth=2.5V (Typical): Moderate threshold voltage, balancing low-voltage drive capability and noise immunity, suitable for various drive topologies.
RDS(on)=5mΩ @ VGS=10V / 6mΩ @ VGS=4.5V: Ultra-low on-resistance, significantly reduces temperature rise under full load, can reduce or eliminate additional heatsinks.
ID=85A: Large continuous current margin, capable of handling peak load demands such as motor stall and power supply surges.
Package TO252: Compatible with mainstream DPAK pads, low thermal resistance, high current capacity, suitable for medium power density layouts, and facilitates automated SMT assembly.
Domain and module applications：
Automotive Electronics and Vehicle Power: 40V withstand voltage combined with 85A high current, suitable for 12V vehicle buses, smart fuse boxes, and body control modules; low conduction loss improves system efficiency.
Low-voltage Motor Drive: Low PWM switching loss and small conduction voltage drop support high-torque startup, significantly improving controller temperature rise, suitable for power tools, fans, water pumps, etc.
Battery Protection and Management: Low internal resistance reduces self-heating of the protection board; fast switching response ensures reliable shutdown during overcurrent/short circuit, suitable for power batteries and energy storage systems.
DC-DC Converters and Synchronous Rectification: Replaces high-dissipation Schottky diodes, improving heavy-load efficiency by 2~3%, aiding miniaturization and high-power-density design of power modules.
Power Tools and High-power Loads: The 85A continuous current capability can handle high current surges in tools like drills and lawn mowers, offering greater durability and higher reliability.
Power Adapters and Charger Auxiliary Power Supplies: Low RDS(on) and wide safe operating area, suitable for high ripple and wide load range, improving overall stability and service life. Selection Summary: The BUK7208-40B,118-VB, with its 40V withstand voltage, 85A high current, 5mΩ ultra-low on-resistance, and mature TO252 package, provides excellent thermal performance and electrical margin in low-voltage high-current switching applications. It is a cost-effective general-purpose choice for high-intensity power conversion, motor control, and battery management scenarios, particularly suitable for projects with stringent requirements for overcurrent capability and long-term reliability.
* 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
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