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AUIRF540ZS

AUIRF540ZS Description

The AUIRF540ZS from Infineon Technologies is an N-channel HEXFET® power MOSFET designed for high-efficiency switching applications. With a 100V drain-to-source voltage (Vdss) and 36A continuous drain current (Id), it offers robust performance in power management circuits. This surface-mount D2PAK-packaged MOSFET features a low on-resistance (Rds(on)) of 26.5mΩ at 10V gate drive, minimizing conduction losses. Although marked as obsolete, its specifications—such as a gate charge (Qg) of 63nC and input capacitance (Ciss) of 1770pF—make it suitable for legacy designs requiring high-current handling and fast switching.

AUIRF540ZS Features

• Low Rds(on): 26.5mΩ @ 22A, 10V ensures reduced power dissipation.
• High Current Capability: 36A continuous drain current (Tc) for demanding loads.
• Fast Switching: Optimized gate charge (63nC) and capacitance for efficient high-frequency operation.
• Robust Voltage Handling: 100V Vdss and ±20V Vgs(max) tolerance.
• Thermal Performance: 92W power dissipation (Tc) with reliable thermal management.
• Compliance: ROHS3 and REACH unaffected, meeting environmental standards.

AUIRF540ZS Applications

Ideal for:

• DC-DC Converters: Efficient power conversion in industrial and automotive systems.
• Motor Drives: High-current switching in brushed/brushless motor controllers.
• Power Supplies: SMPS and UPS designs requiring low conduction losses.
• Load Switching: Battery management and high-side/low-side switching applications.
• Legacy Systems: Maintenance or repair of older electronics where obsolete components are still viable.

Conclusion of AUIRF540ZS

The AUIRF540ZS remains a competitive choice for high-power switching despite its obsolete status, offering a balance of low Rds(on), high current capacity, and reliable thermal performance. Its HEXFET® technology ensures efficiency in applications like motor drives and power supplies, though designers should consider modern alternatives for new projects. For legacy systems or specific high-current needs, this MOSFET delivers proven performance.