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IRF540ZS

IRF540ZS Description

The IRF540ZS 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. The device features a low on-resistance (Rds(on)) of 26.5mΩ at 10V gate drive, minimizing conduction losses and improving thermal efficiency. Packaged in a D2PAK (TO-263) surface-mount form factor, it is suitable for high-power PCB designs. Although marked as obsolete, its specifications remain competitive for legacy or cost-sensitive applications.

IRF540ZS Features

• Low Rds(on): 26.5mΩ @ 10V, ensuring reduced power dissipation.
• High Current Handling: 36A (Tc) continuous drain current for demanding loads.
• Fast Switching: Gate charge (Qg) of 63nC @ 10V and input capacitance (Ciss) of 1770pF @ 25V enable efficient high-frequency operation.
• Robust Voltage Ratings: ±20V gate-source voltage (Vgs) and 100V drain-source breakdown.
• Thermal Performance: 92W max power dissipation (Tc) with reliable thermal management.
• Industry-Standard Package: D2PAK (TO-263) for easy integration into power circuits.

IRF540ZS Applications

• Switching Power Supplies: Efficient DC-DC converters and SMPS designs.
• Motor Control: Drives for brushed/brushless motors in industrial systems.
• Automotive Electronics: Load switching and power distribution in 12V/24V systems.
• Audio Amplifiers: High-current output stages in Class-D amplifiers.
• LED Drivers: High-efficiency constant-current drivers for lighting applications.

Conclusion of IRF540ZS

The IRF540ZS is a high-performance N-channel MOSFET offering low conduction losses, high current capability, and reliable switching characteristics. While obsolete, its D2PAK packaging and HEXFET® technology make it a viable choice for legacy designs or applications requiring cost-effective power switching. Ideal for power supplies, motor drives, and automotive systems, it balances performance with thermal efficiency. Engineers seeking alternatives should verify availability but can leverage its specs for comparable modern replacements.