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IRFR3505PBF

IRFR3505PBF Description

The IRFR3505PBF from Infineon Technologies is an N-channel HEXFET® MOSFET designed for high-efficiency power switching applications. With a 55V drain-to-source voltage (Vdss) and 30A continuous drain current (Id), this surface-mount device offers robust performance in a compact DPAK package. It features a low on-resistance (Rds(on)) of 13mΩ at 10V gate drive, minimizing conduction losses. The MOSFET operates with a gate threshold voltage (Vgs(th)) of up to 4V and supports a maximum gate-source voltage (Vgs) of ±20V, ensuring compatibility with standard drive circuits. Although marked as obsolete, its 140W power dissipation (Tc) and 2030pF input capacitance (Ciss) make it suitable for legacy designs requiring high-current handling.

IRFR3505PBF Features

• Low Rds(on): 13mΩ at 30A, 10V, enhancing efficiency in high-current paths.
• High Power Handling: 140W (Tc) dissipation for thermally demanding applications.
• Fast Switching: Moderate gate charge (Qg) of 93nC at 10V balances speed and drive requirements.
• Robust Construction: HEXFET® technology ensures reliability under repetitive switching.
• Wide Vgs Range: ±20V tolerance for flexible gate driving.
• Surface-Mount DPAK: Ideal for automated assembly in power PCBs.

IRFR3505PBF Applications

• DC-DC Converters: Efficient voltage regulation in industrial power supplies.
• Motor Control: Drives and H-bridge circuits in automotive/robotics systems.
• Load Switching: High-side/Low-side switches in battery management.
• Legacy Systems: Replacement or repair in obsolete power electronics.
• LED Drivers: High-current PWM dimming applications.

Conclusion of IRFR3505PBF

The IRFR3505PBF excels in high-current, medium-voltage scenarios, leveraging low Rds(on) and HEXFET® reliability. While obsolete, its DPAK form factor and 30A rating remain valuable for repairs or cost-sensitive designs. Engineers should evaluate modern alternatives for new projects but can rely on this MOSFET for proven performance in motor drives, converters, and switching circuits.