STP28NM50
N-channel MOSFET transistors, 500V 21A, TO-220 package
Manufacturer： stm
series introduction
# Introduction to the STP28NM50 Product Series
## 1. Overview
The STP28NM50 product series is a remarkable line of power MOSFETs (Metal - Oxide - Semiconductor Field - Effect Transistors) developed by STMicroelectronics. These MOSFETs are designed to meet the demanding requirements of various power - related applications, offering high - performance, reliability, and efficiency.
## 2. Key Features
### 2.1 Electrical Characteristics
- **Low On - Resistance (RDS(on))**: One of the most significant features of the STP28NM50 series is its low on - resistance. With a low RDS(on), the MOSFET can conduct a large amount of current with minimal power loss in the on - state. This results in reduced heat generation, which is crucial for high - power applications. For example, in a high - current power supply, a low RDS(on) MOSFET like those in the STP28NM50 series can help improve the overall efficiency of the system.
- **High Drain - Source Voltage Rating (VDS)**: The STP28NM50 MOSFETs have a high drain - source voltage rating of 500V. This high voltage rating makes them suitable for applications that require handling high - voltage signals, such as in switch - mode power supplies (SMPS), motor control circuits, and high - voltage inverters.
- **High Current - Carrying Capacity**: These MOSFETs are capable of handling relatively high continuous drain currents. This allows them to be used in applications where large amounts of power need to be switched or controlled, such as in industrial motor drives and high - power audio amplifiers.
### 2.2 Thermal Performance
- **Good Thermal Dissipation**: The STP28NM50 series is designed with a package that provides good thermal dissipation characteristics. This helps in maintaining the MOSFET's temperature within a safe operating range, even under high - power and high - current conditions. Effective thermal management is essential for the long - term reliability of the device, as excessive heat can degrade the performance and lifespan of the MOSFET.
### 2.3 Gate Characteristics
- **Low Gate Charge (Qg)**: The low gate charge of the STP28NM50 MOSFETs enables fast switching speeds. A low Qg means that less energy is required to charge and discharge the gate capacitance, resulting in reduced switching losses. This is particularly important in high - frequency applications, where fast switching can improve the efficiency and performance of the circuit.
## 3. Package Options
The STP28NM50 series is available in various package types, such as the TO - 220 and D2PAK packages.
- **TO - 220 Package**: The TO - 220 package is a popular through - hole package that offers good mechanical stability and ease of mounting on printed circuit boards (PCBs). It also provides relatively good thermal performance, making it suitable for applications where the MOSFET needs to dissipate a moderate amount of heat.
- **D2PAK Package**: The D2PAK package is a surface - mount package that offers a more compact form factor compared to the TO - 220. It is suitable for applications where space is limited, such as in portable electronic devices and compact power supplies. The D2PAK package also provides good thermal performance, thanks to its large surface area for heat dissipation.
## 4. Applications
### 4.1 Switch - Mode Power Supplies (SMPS)
In SMPS, the STP28NM50 MOSFETs can be used as the main switching device. Their low on - resistance and high voltage rating make them ideal for converting high - voltage DC power to low - voltage DC
Images for reference
TO-220-3, TO-220AB
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