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STT3981-VB Product details
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STT3981-VB MOSFET Product Introduction
**STT3981-VB** is a high-efficiency **dual P-channel MOSFET**, using **SOT23-6 package**, suitable for high-density circuit design. This product is manufactured based on **Trench technology**, with low on-resistance (RDS(ON)) and high current carrying capacity, which can effectively reduce power loss and improve the energy efficiency of the circuit. The maximum **drain-source voltage (VDS)** of this MOSFET is **-20V**, supports a maximum **drain current (ID)** of **-4A**, and still maintains high performance at low gate voltage (VGS). It is very suitable for use in many fields such as power management, battery management and load switching, especially in applications that require efficient current control and low power consumption.
**STT3981-VB** is a high-efficiency **dual P-channel MOSFET**, using **SOT23-6 package**, suitable for high-density circuit design. This product is manufactured based on **Trench technology**, with low on-resistance (RDS(ON)) and high current carrying capacity, which can effectively reduce power loss and improve the energy efficiency of the circuit. The maximum **drain-source voltage (VDS)** of this MOSFET is **-20V**, supports a maximum **drain current (ID)** of **-4A**, and still maintains high performance at low gate voltage (VGS). It is very suitable for use in many fields such as power management, battery management and load switching, especially in applications that require efficient current control and low power consumption.
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Product parameter：
| VB Package | Configuration | VDS(V) | VGS | Vthyp（V） | ID(A) | Rds2.5 | Rds4.5 | Rds10 | Technology |
|---|---|---|---|---|---|---|---|---|---|
| SOT23-6 | Dual-P+P | -20V | -0.6V | -4A | 100mΩ | Trench |
| VB Package | Configuration | VCE | VGE | VGEth(V) | VCEsat15V | ICE | Technology |
|---|---|---|---|---|---|---|---|
| SOT23-6 | Dual-P+P | Trench |
| VB Package | Configuration | VDS(V) | VGS | Vthyp（V） | ID(A) | Rds18 | Technology |
|---|---|---|---|---|---|---|---|
| SOT23-6 | Dual-P+P | -20V | -0.6V | -4A | Trench |
| VB Package | Configuration | VDS(V) | VGS | Vthyp（V） | ID(A) | Rds6 | Technology |
|---|---|---|---|---|---|---|---|
| SOT23-6 | Dual-P+P | -20V | -0.6V | -4A | Trench |
| VB Package | Polarity | Vz / VR | Pd | VF | IF | IR | Cd | Type |
|---|---|---|---|---|---|---|---|---|
| SOT23-6 | Dual-P+P |
STT3981-VB MOSFET Detailed parameter description
- **Model**: STT3981-VB
- **Package**: SOT23-6
- **Configuration**: Dual-P+P-Channel
- **Drain-source voltage (VDS)**: -20V
- **Gate-source voltage (VGS)**: ±12V
- **Threshold voltage (Vth)**: -0.6V
- **On-resistance (RDS(ON))**:
- 100mΩ@VGS=2.5V
- 75mΩ@VGS=4.5V
- **Maximum drain current (ID)**: -4A
- **Technology**: Trench
- **Operating temperature range**: Please refer to the product data sheet
- **Maximum power loss**: Please refer to the product data sheet
- **Application areas**: Power management, load switching, battery management, motor drive and other modules.
- **Model**: STT3981-VB
- **Package**: SOT23-6
- **Configuration**: Dual-P+P-Channel
- **Drain-source voltage (VDS)**: -20V
- **Gate-source voltage (VGS)**: ±12V
- **Threshold voltage (Vth)**: -0.6V
- **On-resistance (RDS(ON))**:
- 100mΩ@VGS=2.5V
- 75mΩ@VGS=4.5V
- **Maximum drain current (ID)**: -4A
- **Technology**: Trench
- **Operating temperature range**: Please refer to the product data sheet
- **Maximum power loss**: Please refer to the product data sheet
- **Application areas**: Power management, load switching, battery management, motor drive and other modules.
Domain and module applications：
Application fields and module examples
1. **Power management system (DC-DC converter)**
**STT3981-VB** MOSFET is very suitable for **DC-DC converter**, especially in low voltage and low power consumption power supply design. It can provide low on-resistance, reduce energy loss in the power conversion process, and improve conversion efficiency. It is widely used in mobile devices, embedded systems, portable battery devices and other fields.
2. **Load switch application**
As a **load switch**, **STT3981-VB** MOSFET can achieve precise switching control. Due to its low on-resistance, it can switch current quickly and efficiently, and is suitable for applications that require switching control, such as battery management systems, LED drive circuits, and power distribution modules. It is particularly suitable for the control of low voltage loads and reduces power loss.
3. **Battery management system (BMS)**
In the **battery management system**, **STT3981-VB** MOSFET can be used for battery protection and charge and discharge control. Due to its low RDS(ON), it can effectively reduce the power loss during battery discharge, enhance the overall efficiency of the system, and extend the battery life. It is particularly suitable for mobile power systems such as power tools and electric bicycles.
4. **Motor drive circuit**
**STT3981-VB** MOSFET is suitable for **motor drive circuit**, especially in low-voltage, low-power motor control systems. It can provide reliable switching operation, effectively control the start, stop and speed regulation of the motor, and is widely used in home appliances, power tools, robots and other fields.
5. **Switching power supply (SMPS)**
In **switching power supply (SMPS)** applications, **STT3981-VB** MOSFET provides efficient power conversion capabilities, especially for low-voltage and high-efficiency power supply designs. It is widely used in LED drive power supplies, computer power supplies, communication equipment power supplies, etc., and can maintain high conversion efficiency while consuming low power.
6. **Automotive Electronics Applications**
In the **automotive electronics** field, **STT3981-VB** MOSFET can be used in battery protection systems, power management, and load switching modules. It can effectively regulate the battery voltage, ensure the battery's health, and prevent over-discharge or over-charge. This type of MOSFET performs well in battery management and power systems for electric vehicles (EVs) and hybrid electric vehicles (HEVs).
7. **Communication Equipment and Embedded Systems**
**STT3981-VB** MOSFET is widely used in **communication equipment** and **embedded systems**. It can be used in power management, load switching, and high-efficiency power modules to provide stable and efficient power supply for various portable devices, routers, sensors, and modules, meeting the needs of low power consumption and high efficiency.
In summary, **STT3981-VB**, as a **dual P-channel MOSFET**, has low on-resistance, high current handling capability, and efficient power conversion performance. It can provide excellent performance in many fields and applications such as power management, battery management, load switch, motor drive, power tools, switching power supply, etc. Whether it is a portable power supply, automatic control system or electric vehicle, this MOSFET can effectively improve system efficiency and reduce power loss.
1. **Power management system (DC-DC converter)**
**STT3981-VB** MOSFET is very suitable for **DC-DC converter**, especially in low voltage and low power consumption power supply design. It can provide low on-resistance, reduce energy loss in the power conversion process, and improve conversion efficiency. It is widely used in mobile devices, embedded systems, portable battery devices and other fields.
2. **Load switch application**
As a **load switch**, **STT3981-VB** MOSFET can achieve precise switching control. Due to its low on-resistance, it can switch current quickly and efficiently, and is suitable for applications that require switching control, such as battery management systems, LED drive circuits, and power distribution modules. It is particularly suitable for the control of low voltage loads and reduces power loss.
3. **Battery management system (BMS)**
In the **battery management system**, **STT3981-VB** MOSFET can be used for battery protection and charge and discharge control. Due to its low RDS(ON), it can effectively reduce the power loss during battery discharge, enhance the overall efficiency of the system, and extend the battery life. It is particularly suitable for mobile power systems such as power tools and electric bicycles.
4. **Motor drive circuit**
**STT3981-VB** MOSFET is suitable for **motor drive circuit**, especially in low-voltage, low-power motor control systems. It can provide reliable switching operation, effectively control the start, stop and speed regulation of the motor, and is widely used in home appliances, power tools, robots and other fields.
5. **Switching power supply (SMPS)**
In **switching power supply (SMPS)** applications, **STT3981-VB** MOSFET provides efficient power conversion capabilities, especially for low-voltage and high-efficiency power supply designs. It is widely used in LED drive power supplies, computer power supplies, communication equipment power supplies, etc., and can maintain high conversion efficiency while consuming low power.
6. **Automotive Electronics Applications**
In the **automotive electronics** field, **STT3981-VB** MOSFET can be used in battery protection systems, power management, and load switching modules. It can effectively regulate the battery voltage, ensure the battery's health, and prevent over-discharge or over-charge. This type of MOSFET performs well in battery management and power systems for electric vehicles (EVs) and hybrid electric vehicles (HEVs).
7. **Communication Equipment and Embedded Systems**
**STT3981-VB** MOSFET is widely used in **communication equipment** and **embedded systems**. It can be used in power management, load switching, and high-efficiency power modules to provide stable and efficient power supply for various portable devices, routers, sensors, and modules, meeting the needs of low power consumption and high efficiency.
In summary, **STT3981-VB**, as a **dual P-channel MOSFET**, has low on-resistance, high current handling capability, and efficient power conversion performance. It can provide excellent performance in many fields and applications such as power management, battery management, load switch, motor drive, power tools, switching power supply, etc. Whether it is a portable power supply, automatic control system or electric vehicle, this MOSFET can effectively improve system efficiency and reduce power loss.
* 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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