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SW4N40D-VB Product details
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1. **Product Introduction**
**SW4N40D-VB** is a high voltage N-channel MOSFET in SOT223 package, designed for low and medium power applications. Its maximum drain-source voltage (VDS) is 650V, suitable for medium and high voltage power systems, and supports a gate-source voltage (VGS) of ±30V. The threshold voltage (Vth) of this MOSFET is 3.5V, which enables efficient switching under normal driving voltage. **SW4N40D-VB** has a low on-resistance (RDS(ON)) of 2500mΩ (VGS = 4.5V) and 2000mΩ (VGS = 10V), suitable for medium power applications with certain requirements on power loss. Its maximum drain current (ID) is 4A, suitable for lower current loads. Using **Plannar** technology, SW4N40D-VB has good switching characteristics and stability, suitable for switch control in general industrial power supplies, power tools and other medium and low power equipment.
**SW4N40D-VB** is a high voltage N-channel MOSFET in SOT223 package, designed for low and medium power applications. Its maximum drain-source voltage (VDS) is 650V, suitable for medium and high voltage power systems, and supports a gate-source voltage (VGS) of ±30V. The threshold voltage (Vth) of this MOSFET is 3.5V, which enables efficient switching under normal driving voltage. **SW4N40D-VB** has a low on-resistance (RDS(ON)) of 2500mΩ (VGS = 4.5V) and 2000mΩ (VGS = 10V), suitable for medium power applications with certain requirements on power loss. Its maximum drain current (ID) is 4A, suitable for lower current loads. Using **Plannar** technology, SW4N40D-VB has good switching characteristics and stability, suitable for switch control in general industrial power supplies, power tools and other medium and low power equipment.
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Product parameter：
| VB Package | Configuration | VDS(V) | VGS | Vthyp（V） | ID(A) | Rds2.5 | Rds4.5 | Rds10 | Technology |
|---|---|---|---|---|---|---|---|---|---|
| SOT223 | Single-N | 650V | 3.5V | 4A | 2000mΩ | Plannar |
| VB Package | Configuration | VCE | VGE | VGEth(V) | VCEsat15V | ICE | Technology |
|---|---|---|---|---|---|---|---|
| SOT223 | Single-N | Plannar |
| VB Package | Configuration | VDS(V) | VGS | Vthyp（V） | ID(A) | Rds18 | Technology |
|---|---|---|---|---|---|---|---|
| SOT223 | Single-N | 650V | 3.5V | 4A | Plannar |
| VB Package | Configuration | VDS(V) | VGS | Vthyp（V） | ID(A) | Rds6 | Technology |
|---|---|---|---|---|---|---|---|
| SOT223 | Single-N | 650V | 3.5V | 4A | Plannar |
| VB Package | Polarity | Vz / VR | Pd | VF | IF | IR | Cd | Type |
|---|---|---|---|---|---|---|---|---|
| SOT223 | Single-N |
2. **Detailed parameter description**
- **Model**: SW4N40D-VB
- **Package**: SOT223
- **Configuration**: Single-N-Channel
- **Maximum drain-source voltage (VDS)**: 650V
- **Maximum gate-source voltage (VGS)**: ±30V
- **Threshold voltage (Vth)**: 3.5V
- **On-resistance (RDS(ON))**: 2500mΩ @ VGS = 4.5V
- **On-resistance (RDS(ON))**: 2000mΩ @ VGS = 10V
- **Maximum drain current (ID)**: 4A
- **Operating temperature range**: -55°C to 150°C
- **Process technology**: Plannar
- **Maximum power consumption**: about 60W (depending on heat dissipation conditions)
- **Switching speed**: moderate, suitable for low to medium frequency switching applications
- **Application areas**: suitable for industrial power supplies, power tools, LED drivers, battery management and other fields
- **Model**: SW4N40D-VB
- **Package**: SOT223
- **Configuration**: Single-N-Channel
- **Maximum drain-source voltage (VDS)**: 650V
- **Maximum gate-source voltage (VGS)**: ±30V
- **Threshold voltage (Vth)**: 3.5V
- **On-resistance (RDS(ON))**: 2500mΩ @ VGS = 4.5V
- **On-resistance (RDS(ON))**: 2000mΩ @ VGS = 10V
- **Maximum drain current (ID)**: 4A
- **Operating temperature range**: -55°C to 150°C
- **Process technology**: Plannar
- **Maximum power consumption**: about 60W (depending on heat dissipation conditions)
- **Switching speed**: moderate, suitable for low to medium frequency switching applications
- **Application areas**: suitable for industrial power supplies, power tools, LED drivers, battery management and other fields
Domain and module applications：
3. **Application fields and module examples**
**SW4N40D-VB** MOSFET is suitable for medium-power switch control due to its high-voltage withstand capability, moderate on-resistance and medium current carrying capacity. The following are typical applications of this product in different fields and modules:
- **Power management system**: SW4N40D-VB can be widely used in **medium-power AC-DC converter** and **DC-DC converter**. In these power modules, the high-voltage capability and low on-resistance of MOSFET ensure efficient power conversion, suitable for use as a switching element to improve system efficiency. It is especially suitable for power supply of home appliances and industrial equipment that require stable output voltage.
- **Power tools**: Due to its moderate drain current and on-resistance, SW4N40D-VB is very suitable for power management of **power tools** and other small power equipment. It can provide stable switch control in a smaller power range, ensuring long-term and efficient operation of power tools.
- **LED Driver**: This MOSFET is suitable for **LED Driver**, especially in applications that require high efficiency and low power loss. SW4N40D-VB has low conduction loss while providing high voltage protection, which can help improve the efficiency of LED lighting systems and extend the service life of equipment. Suitable for applications such as commercial lighting, home lighting and architectural lighting.
- **Battery Management System (BMS)**: In **Battery Management System (BMS)**, SW4N40D-VB can be used for switch control during battery charging and discharging. Its high voltage tolerance and moderate current carrying capacity enable it to be used in medium power battery management systems, such as battery systems for power tools, electric bicycles and light electric vehicles.
- **Low Power Switching Power Supply Module**: SW4N40D-VB can be applied to **low power switching power supply modules**, especially for devices operating in the low and medium voltage range, such as small electronic products, battery-powered systems and portable electronic devices. Its low on-resistance helps reduce power loss and improve efficiency.
- **Industrial control systems**: In **industrial automation control**, this MOSFET can be used as a switching element for the control of medium-power loads such as solenoid valves, electric actuators, and sensor control.
**SW4N40D-VB** MOSFET is suitable for medium-power switch control due to its high-voltage withstand capability, moderate on-resistance and medium current carrying capacity. The following are typical applications of this product in different fields and modules:
- **Power management system**: SW4N40D-VB can be widely used in **medium-power AC-DC converter** and **DC-DC converter**. In these power modules, the high-voltage capability and low on-resistance of MOSFET ensure efficient power conversion, suitable for use as a switching element to improve system efficiency. It is especially suitable for power supply of home appliances and industrial equipment that require stable output voltage.
- **Power tools**: Due to its moderate drain current and on-resistance, SW4N40D-VB is very suitable for power management of **power tools** and other small power equipment. It can provide stable switch control in a smaller power range, ensuring long-term and efficient operation of power tools.
- **LED Driver**: This MOSFET is suitable for **LED Driver**, especially in applications that require high efficiency and low power loss. SW4N40D-VB has low conduction loss while providing high voltage protection, which can help improve the efficiency of LED lighting systems and extend the service life of equipment. Suitable for applications such as commercial lighting, home lighting and architectural lighting.
- **Battery Management System (BMS)**: In **Battery Management System (BMS)**, SW4N40D-VB can be used for switch control during battery charging and discharging. Its high voltage tolerance and moderate current carrying capacity enable it to be used in medium power battery management systems, such as battery systems for power tools, electric bicycles and light electric vehicles.
- **Low Power Switching Power Supply Module**: SW4N40D-VB can be applied to **low power switching power supply modules**, especially for devices operating in the low and medium voltage range, such as small electronic products, battery-powered systems and portable electronic devices. Its low on-resistance helps reduce power loss and improve efficiency.
- **Industrial control systems**: In **industrial automation control**, this MOSFET can be used as a switching element for the control of medium-power loads such as solenoid valves, electric actuators, and sensor control.
* 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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