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STD40N2LH5-VB Product details
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The STD40N2LH5-VB is a Single N-MOSFET optimized for low-voltage, high-current power switching applications. Its Trench technology balances ultra-low conduction losses with high switching reliability. The TO252 package offers a good compromise between heat dissipation and ease of installation. With a 30V drain-source voltage, 70A current capability, and 7mΩ on-resistance, it is a preferred choice for replacing traditional DPAK devices in 5V/12V/24V systems, particularly suited for high power density applications like motor drives, power conversion, and battery protection.
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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 | 30V | 1.7V | 70A | 9(mΩ) | 7(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 | 30V | 1.7V | 70A | Trench |
| VB Package | Configuration | VDS(V) | VGS | Vthyp（V） | ID(A) | Rds6 | Technology |
|---|---|---|---|---|---|---|---|
| TO252 | Single-N | 30V | 1.7V | 70A | Trench |
| VB Package | Polarity | Vz / VR | Pd | VF | IF | IR | Cd | Type |
|---|---|---|---|---|---|---|---|---|
| TO252 | Single-N | MOS |
VDS=30V: Suitable for 5V/12V/24V systems, providing ample margin for voltage spikes and reducing avalanche breakdown risk.
VGS=±20V: Compatible with 1.8V~12V logic levels, can be directly driven by MCU/PMIC, eliminating level-shifting circuits.
Vth=1.7V (Typical): Ensures full conduction even with low gate drive voltage, suitable for battery voltage decay scenarios and wide drive range requirements.
RDS(on)=7mΩ @ VGS=10V, 9mΩ @ VGS=4.5V: Ultra-low on-resistance significantly reduces temperature rise under full load, decreasing heatsink or copper area requirements.
ID=70A: Ample continuous current margin to handle peak currents like inrush and stall conditions, improving system robustness.
Package TO252: Low thermal resistance, strong power dissipation capability, suitable for medium power PCB layouts, compatible with automated assembly to reduce manufacturing costs.
Domain and module applications：
Low-Voltage Motor Drive: Ultra-low on-resistance and fast switching characteristics significantly reduce PWM losses, resulting in smoother motor operation and controlled driver temperature rise.
Battery Protection Module: 70A high current capability combined with low internal resistance is suitable for high-power battery packs in power tools, vacuum cleaners, etc., reducing self-heating of the protection board.
DC-DC Converters: Replaces Schottky diodes in synchronous rectification applications, improving heavy-load efficiency by 2-3%, aiding module miniaturization and high power density design.
Automotive Auxiliary Power: 30V voltage margin suitable for 12V/24V automotive buses, wide operating temperature range and TO252 package ensure reliability, suitable for loads like lights and fans.
Power Adapters and Fast Charging: In low-voltage, high-current switching scenarios, the 7mΩ on-resistance significantly reduces overall system losses, improving charging efficiency.
Power Tools and Garden Machinery: High current capability meets peak power demands, Trench technology ensures long-term stability under harsh conditions.
Low-Voltage UPS and Energy Storage Systems: High-efficiency energy conversion and low heat generation characteristics, suitable for power switch stages in power distribution and energy storage converters.
Selection Summary: The STD40N2LH5-VB, with its 30V voltage rating, 70A high current, 7mΩ ultra-low on-resistance, and TO252 package, achieves a balance between performance margin, thermal management, and system cost. It is a versatile, cost-effective choice for low-voltage, high-current switching applications, especially for projects with strict requirements on temperature rise, efficiency, and power density.
* 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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