STL140N4
High-power N-channel MOSFETs in compact PowerFLAT packaging
Manufacturer： stm
series introduction
# Introduction to the STL140N4 Product Series
## 1. Overview
The STL140N4 product series represents a significant advancement in power MOSFET technology. These MOSFETs are engineered to meet the demanding requirements of a wide range of applications, offering high - performance, reliability, and efficiency. They are designed and manufactured by a leading semiconductor company, leveraging state - of - the - art fabrication processes and innovative design concepts.
## 2. Key Features
### Electrical Characteristics
- **Low On - Resistance (RDS(on))**: One of the most prominent features of the STL140N4 series is its extremely low on - resistance. This characteristic minimizes power losses during conduction, resulting in higher efficiency and less heat generation. For example, in high - current applications, the low RDS(on) ensures that a large amount of current can flow through the device with minimal voltage drop, reducing wasted energy and improving overall system performance.
- **High Current - Handling Capability**: These MOSFETs are capable of handling high continuous drain currents. This makes them suitable for applications that require the switching or control of large amounts of power, such as power supplies, motor control circuits, and battery management systems.
- **Fast Switching Speed**: The STL140N4 series offers fast switching times, which is crucial in applications where rapid on - off transitions are required. Fast switching reduces switching losses and enables higher - frequency operation, allowing for more compact and efficient circuit designs.
### Thermal Performance
- **Excellent Thermal Dissipation**: The devices are designed with a structure that promotes efficient heat transfer. This helps in maintaining a lower operating temperature, even under high - power conditions. Good thermal performance not only enhances the reliability of the MOSFET but also extends its lifespan, reducing the risk of thermal - related failures.
### Package and Design
- **Compact Package**: The STL140N4 MOSFETs come in a compact and industry - standard package. This makes them easy to integrate into existing circuit boards and systems, saving valuable board space. The package also provides good mechanical stability and protection for the internal semiconductor die.
## 3. Applications
### Power Supplies
- In switching power supplies, the STL140N4 series can be used as the main switching element. Its low on - resistance and fast switching speed contribute to high - efficiency power conversion. Whether it is a DC - DC converter or an AC - DC power supply, these MOSFETs can help reduce power losses and improve the overall power density of the supply.
- They are also suitable for use in voltage regulators, where precise control of the output voltage is required. The high current - handling capability ensures that the regulator can supply sufficient power to the load.
### Motor Control
- For both DC and AC motor control applications, the STL140N4 MOSFETs play a vital role. They can be used to control the speed and direction of the motor by switching the power supply to the motor windings. The fast switching speed allows for smooth and precise motor control, while the high current - handling capacity can handle the large inrush currents that occur during motor startup.
### Battery Management Systems
- In battery charging and discharging circuits, the STL140N4 series helps in efficient power transfer. They can be used to control the charging current and protect the battery from over - charging and over - discharging. The low on - resistance ensures that minimal power is lost during the charging and discharging processes, maximizing the battery's energy utilization.
## 4. Technical Specifications
### Electrical Ratings
- **Drain - Source Voltage (VDS)**: The STL140N4 series typically has a specified drain - source voltage rating that indicates the maximum voltage that can be applied between the drain and source terminals without causing breakdown. This rating is important
Images for reference
PowerQFN
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