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AUIRF7739L2

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AUIRF7739L2

MOSFET N-CH 40V 46A DIRECTFET

Manufacturer: Infineon Technologies

Categories: Single FETs, MOSFETs

Quality Control: Learn More

Infineon Technologies AUIRF7739L2 is an N-Channel HEXFET® Power MOSFET designed for high-current applications. This DirectFET™ Isometric L8 packaged component features a Drain-to-Source Voltage (Vdss) of 40V and a continuous drain current (Id) of 46A at 25°C ambient, with a pulsed drain current capability of 270A at 25°C case. The low on-resistance of 1mOhm at 160A and 10V drive voltage, coupled with a maximum gate charge (Qg) of 330 nC at 10V, ensures efficient switching performance. With a maximum power dissipation of 3.8W (Ta) and 125W (Tc), and an operating junction temperature range of -55°C to 175°C, the AUIRF7739L2 is suitable for demanding automotive and industrial power management systems. This component is typically utilized in applications requiring robust power switching, such as motor control and power distribution.

Additional Information

Series: HEXFET®RoHS Status: unknownManufacturer Lead Time: No lead time information availableProduct Status: ObsoletePackaging: Tape & Reel (TR)Datasheet:
Technical Details:
PackagingTape & Reel (TR)
Package / CaseDirectFET™ Isometric L8
Mounting TypeSurface Mount
Operating Temperature-55°C ~ 175°C (TJ)
TechnologyMOSFET (Metal Oxide)
FET TypeN-Channel
Current - Continuous Drain (Id) @ 25°C46A (Ta), 270A (Tc)
Rds On (Max) @ Id, Vgs1mOhm @ 160A, 10V
FET Feature-
Power Dissipation (Max)3.8W (Ta), 125W (Tc)
Vgs(th) (Max) @ Id4V @ 250µA
Supplier Device PackageDirectFET™ Isometric L8
Drive Voltage (Max Rds On, Min Rds On)10V
Vgs (Max)±20V
Drain to Source Voltage (Vdss)40 V
Gate Charge (Qg) (Max) @ Vgs330 nC @ 10 V
Input Capacitance (Ciss) (Max) @ Vds11880 pF @ 25 V

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Infineon Technologies FAQs

Infineon Technologies manufactures a wide range of semiconductor components with a strong emphasis on power electronics, automotive systems, and security solutions.

Infineon’s core components include:

  • Power semiconductors (MOSFETs, IGBTs, SiC and GaN devices)
  • Microcontrollers (MCUs) for automotive and industrial applications
  • Analog and mixed-signal ICs
  • Sensors (including radar and environmental sensors)
  • Security and authentication ICs
  • Automotive semiconductors (powertrain, ADAS, and safety systems)
  • Wireless and connectivity solutions (Bluetooth, Wi-Fi, and RF)

Infineon specializes in energy-efficient power management, secure connectivity, and high-reliability automotive solutions.

Infineon serves industries that require power efficiency, system safety, and secure connectivity.

Infineon’s key industries include:

  • Automotive and electric vehicles (EVs)
  • Industrial automation and motor control
  • Renewable energy and power infrastructure
  • Consumer electronics and home appliances
  • Internet of Things (IoT) and smart devices
  • Security and identification (payments, access control)

These industries rely on Infineon for power efficiency, system protection, and secure semiconductor solutions.

Infineon is known for power semiconductor technologies, automotive microcontrollers, and security solutions.

Key Infineon product lines include:

  • AURIX - automotive microcontrollers for safety-critical applications
  • XMC - ARM-based microcontrollers for industrial applications
  • PSoC - programmable system-on-chip solutions (via Cypress acquisition)
  • CoolMOS - high-voltage power MOSFETs
  • OptiMOS - low-voltage power MOSFETs
  • CoolSiC - silicon carbide power devices for high-efficiency systems
  • EiceDRIVER - gate driver ICs for power semiconductors
  • OPTIGA - security solutions for authentication and IoT security
Frequently Asked Questions

As a full line supplier, we specialize in sourcing obsolete and hard to find electronic components for your projects.

After we receive your request submission, one of our account executives will reach out to your team to gather more information about your project requirements and ensure we tailor the order to your needs.

Once requirements such as date codes, quantities, target prices, testing requirements, and more are discussed, our purchasing team will secure stock through Microchip USA’s direct access to manufacturing partners’ excess inventory lists.

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Our net terms for electronic component sourcing are flexible and vary by order. Our account executives will work with you to ensure our terms meet your company’s needs. We also offer scheduled shipments and inventory management solutions to ensure a steady supply of electronic components, maintain cash flow, and maximize warranty periods. We always offer a warranty on all tested parts. See our sales terms and conditions for more information.

We partner with industry-leading AS6171 & AS6081-certified third party testing labs to mitigate risk and support a wide array of end uses for your company’s requirements. Testing includes but isn’t limited to: Decapsulation & Internal Dye Verification. X-Ray Inspection & Analysis, External Visual Inspection, Surface Texture Analysis (SEM), and Electrical Pin Correlation.

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