STFW2N105K5

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The STFW2N105K5 is an advanced MOSFET from STMicroelectronics which comprises of a single-channel vertical DMOS power FET. It is ideal for use in miniature motor applications and telecommunication power supplies. This power FET is designed for use in a wide range of DC-to-DC converter applications including motor control, DC-DC converters, as well as switching 12V, 24V, and 48V power supplies.

This MOSFET has a low on-resistance design, which helps to reduce power consumption in applications where high load currents are needed. It also has a built-in NPN device, allowing it to be utilized as a logic-level output stage or as the gate of a secondary high-side FET to increase its current capability. Additionally, thanks to its standard TO-257 package, the STFW2N105K5 can be used in a variety of applications with little need for specialized knowledge or setup.

At its core, the STFW2N105K5 follows MOSFETs two-transistor structure, which is composed of a P-channel layer and an N-channel, which are linked together using a common gate. The application field of the STFW2N105K5 MOSFET lies mainly in activating countless switched-mode power converter applications, such as buck converters. The voltage regulation of this MOSFET should be the same over a range of input voltages and under different output load conditions, which makes this MOSFET suitable for a wide range of power applications.

The working principle of the STFW2N105K5 flips on and off by using the input voltage applied to its Gate Terminal. This input voltage causes electrons to move from the N-channel to the P-channel, resulting in an alteration in the applied voltage and current inside the two channels. The switching speed of the STFW2N105K5 is very fast in comparison to mechanical switches and the amount of on-state power dissipation is fairly low.

The STFW2N105K5 is also very efficient at dissipating heat, thanks to its low thermal resistance. The MOSFET’s maximum power rating is 55 Watts and its threshold voltage is typically 5V. However, it’s maximum operating temperature is restricted to 175 degrees Celsius, due to the fact that its drain-to-source switching time should remain within the prescribed limits even under elevated temperatures.

Overall, the STFW2N105K5 is an ideal MOSFET for applications within telecommunication power supplies and motor control. With its innovative design and low on-resistance rating, it is capable of operating reliably in a wide range of operating conditions with minimal power consumption. Its standard TO-257 package makes it especially suited to applications which make use of a single FET.

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