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IRLB4030PBF

Updated: 2026-07-20

Overview

The IRLB4030PBF is a N-channel power MOSFET manufactured by Infineon Technologies, designed for high-efficiency switching applications. It is part of the HEXFET® series, known for its robustness and performance in power electronics. The device is commonly used in industries such as automotive, industrial automation, and renewable energy systems. With a maximum drain-source voltage (VDS) of 30V and a continuous drain current (ID) of 195A, the IRLB4030PBF is suitable for high-current applications. Its low on-resistance (RDS(on)) of 1.7mΩ ensures minimal power loss, making it ideal for energy-efficient designs.

Structure and Working Principle

LM1117MPX-3.3 TI SOT-223-4 25+ 16位MCU单片机德州仪器晟驰微(深圳)半导体有限公司

The IRLB4030PBF operates as a voltage-controlled switch, where the gate voltage controls the flow of current between the drain and source terminals. Its structure includes a silicon die with a vertical conduction path, optimized for low resistance and high current density. The MOSFET's fast switching capability is due to its low gate charge (Qg) and input capacitance, which reduces switching losses. This makes it suitable for high-frequency applications such as PWM controllers and inverters. The device also features a built-in body diode, providing reverse polarity protection in certain circuits.

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Key Features

The IRLB4030PBF stands out for its low on-resistance (1.7mΩ), which minimizes conduction losses and improves efficiency. Its high current rating (195A) allows it to handle demanding loads, while the 30V drain-source voltage rating makes it versatile for various applications. Other notable features include fast switching speeds, a low gate drive requirement, and a robust thermal performance. The TO-220AB package ensures easy mounting and effective heat dissipation, further enhancing reliability in high-power scenarios.

Application Areas

The IRLB4030PBF is widely used in power electronics, including DC-DC converters, motor drives, and power supply units. Its high efficiency and reliability make it a preferred choice for automotive systems, such as electric vehicle powertrains and battery management systems. In industrial settings, the MOSFET is employed in robotics, CNC machines, and renewable energy inverters. Its ability to handle high currents with minimal losses also makes it suitable for uninterruptible power supplies (UPS) and welding equipment.

Maintenance and Precautions

IRLB4030PBF 场效应管 功率 MOS管 N型 100V 180A 370W TO-220-3 英飞凌深圳市欣向阳科技有限公司

To ensure optimal performance, the IRLB4030PBF requires proper heat dissipation, typically achieved through heatsinks or thermal pads. Exceeding the maximum voltage or current ratings can lead to device failure, so always adhere to the specified limits. Static electricity can damage the MOSFET, so handle it with ESD precautions. Ensure the gate voltage is within the recommended range (typically ±20V) to avoid overdriving the device. Regularly inspect for signs of thermal stress or solder joint degradation in high-vibration environments.

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B2B Procurement Guide

When procuring the IRLB4030PBF, verify the supplier's authenticity to avoid counterfeit components. Bulk purchases often attract discounts, so negotiate with distributors for volume pricing. Lead times can vary, so plan orders in advance, especially for large quantities. Consider alternative part numbers or equivalents if availability is an issue, but ensure compatibility with your design. Reputable suppliers like Digi-Key, Mouser, and authorized Infineon distributors are recommended for reliable sourcing.

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