INFINEON IRF4905PBF P-Channel Power MOSFET, 55V, 74A, TO-220AB

The INFINEON IRF4905PBF is a high-performance P-channel HEXFET power MOSFET designed for demanding power management applications. Encased in a robust TO-220AB through-hole package, this component offers an excellent balance of high current handling, low power loss, and reliable operation.

A key feature is its extremely low on-resistance (Rds(on)) of just 20 milliohms at a gate-source voltage (Vgs) of -10V. This characteristic minimises conduction losses, leading to superior efficiency in switching circuits. The MOSFET is fully avalanche-rated and features a rugged design with a high dynamic dv/dt rating, ensuring stable and fast switching performance even in challenging conditions. These attributes make HEXFET power MOSFETs renowned for delivering high efficiency and long-term reliability across a wide variety of applications.

Technical Specifications & Performance

With a continuous drain current (Id) rating of -74A and a power dissipation (Pd) capability of 200W at 25°C, this device is built to handle significant power. It operates with a drain-to-source voltage (Vds) of -55V and a gate-to-source voltage (Vgs) range of ±20V, providing design flexibility. The wide junction temperature operating range, from -55°C to 175°C, ensures stable performance in environments with significant thermal variation.

Applications

This versatile power MOSFET is suitable for numerous applications, including DC-DC converters, motor control circuits, power supply units, and high-efficiency switching regulators. Its through-hole TO-220AB package facilitates easy mounting and effective heat dissipation via an external heatsink when required, making it a practical choice for both prototyping and production use.