STPS20SM120SFP

The STPS20SM120SFP is an high voltage fast-acting ultra-small surface-mount rectangular Schottky rectifier manufactured by STMicroelectronics. This device allows for current levels up to 20A and operates at a peak reverse voltage of 1200V. The STPS20SM120SFP comes in an ultra-small DPAK package, making it ideal for applications where board size is a priority.

Applications

The STPS20SM120SFP is typically used for applications such as Power over Ethernet (PoE) switching, or in power converters, power supplies and motor control. It is also used in industrial and automotive applications, where both voltage and current ratings need to be low in order to meet the total system power requirements.

Working Principle

The STPS20SM120SFP is a type of Schottky diode, which is a semiconductor device composed of two different materials that are joined together and form a p-n junction. A Schottky diode has a narrower p-n junction than a standard rectifier diode, allowing it to switch more quickly between conducting and non-conducting states. In addition, its low forward voltage drop makes it a more efficient semiconductor for energy conversion purposes.

When the STPS20SM120SFP is used in a circuit, it will allow current to flow in one direction (forward) and block current from flowing in the opposite direction (reverse). When the current flows in the forward bias, the diode will be in a conducting state and the voltage drop across the diode will be very low. When the voltage polarity reverses, the diode will be in a non-conducting state.

In addition, the STPS20SM120SFP also has an internal reverse breakdown voltage due to the potential barrier between the p-type and n-type materials, which helps protect the circuit from overdrawing power and damaging itself.

Conclusion

The STPS20SM120SFP is an ideal choice for applications that require high current levels, a low forward voltage drop, and an ultra-small package size. It is a high voltage, fast-acting Schottky rectifier that can be used in a wide range of applications, including PoE switching and power supplies. Its internal reverse breakdown voltage helps protect the circuit from power overloads and also provides a more efficient pathway for current to pass through.