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Home > Products > Discrete Semiconductor Products > Transistors > FETs, MOSFETs > FETs, MOSFETs

Infineon Technologies AUIRLU2905

Name: AUIRLU2905
Brand: Infineon Technologies
SKU: AUIRLU2905
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AUIRLU2905

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

Package:: TO-251-3 Short Leads, IPAK, TO-251AA

Datasheet:: AUIRLU2905.pdf

Description:: MOSFET N-CH 55V 42A IPAK

Quantity:: RFQ Add To RFQ list

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Inventory:4,063

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Product details

Overview

AUIRLU2905 from Infineon is an automotive-grade N-channel logic-level HEXFET® Power MOSFET in I-Pak (TO-220AB) package, rated for 55 V V_DS, 42 A continuous drain current at T_C = 25°C, and 27 mΩ R_DS(on) at V_GS = 10 V. It operates up to 175°C junction temperature and is fully avalanche-rated for robustness in automotive load switching applications such as engine control modules and body electronics.

For engineers reviewing the AUIRLU2905 datasheet, AUIRLU2905 pinout, AUIRLU2905 application, or AUIRLU2905 equivalent, key selection criteria include its logic-level gate drive compatibility (V_GS(th) = 1.0–2.0 V), low R_DS(on) at 4.0 V gate drive (40 mΩ), fast switching (t_r = 84 ns, t_f = 15 ns), and automotive qualification per AEC-Q101.

Technical Context

This device employs advanced planar silicon technology optimized for high-current, high-temperature automotive environments. Its cellular HEXFET® structure delivers low on-resistance per die area while maintaining rugged dynamic dV/dt capability (5.0 V/ns) and repetitive avalanche energy rating (11 mJ).

The I-Pak package provides enhanced thermal performance with R_θJC = 1.4°C/W and supports high-power switching in space-constrained engine bay layouts. Gate charge parameters (Q_g = 48 nC, Q_gd = 25 nC) enable efficient PWM control in 12 V/24 V DC systems with minimal driver loss.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	55 V - Withstands transients up to 44 V in 12 V automotive systems without clamping
R_DS(on) max	27 mΩ @ V_GS = 10 V - Enables <1.1 W conduction loss at 42 A, reducing heatsink requirements
I_D cont.	42 A @ T_C = 25°C - Supports high-current solenoid, fan, and pump drivers
V_GS(th)	1.0–2.0 V - Fully enhanced by standard 3.3 V or 5 V microcontroller GPIOs
E_AS	200 mJ (tested) - Absorbs unclamped inductive energy during relay/MOSFET turn-off
t_r/t_f	84 ns / 15 ns - Minimizes switching loss in 20–100 kHz PWM motor control
T_J max	+175°C - Certified for under-hood operation without derating in ambient >125°C

Pinout & Package

I-Pak (TO-220AB) package with isolated tab (drain-connected), through-hole mounting, and 3-pin vertical lead configuration. Thermal resistance R_θJC = 1.4°C/W enables direct heatsink attachment via screw or clip.

Pin/Terminal	Circuit Role	Design Meaning
1 (Tab)	Drain (D)	Electrically connected to metal tab; requires insulating washer when mounted to grounded heatsink
2	Source (S)	Power return path; connects to ground plane or low-side shunt resistor
3	Gate (G)	High-impedance control input; requires <100 nF local decoupling and series gate resistor (~10 Ω) for EMI control

Key Features

Feature	Design Value
Logic-level gate drive	Operates fully enhanced at V_GS ≥ 4.0 V, eliminating need for gate driver ICs in MCU-based designs
Full avalanche rating	Rated for single-pulse (200 mJ) and repetitive (11 mJ) avalanche events-critical for inductive load snubbing
Dynamic dV/dt immunity	5.0 V/ns - Resists false turn-on during high-slew-rate noise in engine control environments
AEC-Q101 qualified	Validated for automotive use including temperature cycling, HTRB, and UHAST per JEDEC standards
Low Q_gd/Q_g ratio	25 nC / 48 nC = 0.52 - Improves Miller immunity and reduces risk of shoot-through in half-bridge configurations

Applications

Engine Control Unit (ECU) Fuel Injector Driver

Automotive HVAC Blower Motor Control

Use Scenario: High-speed switching of 12 V fuel injectors with peak currents up to 35 A and 1 ms pulse widths.

IC Role / Device Role / Timing Role: Low-side power switch with fast turn-off (t_f = 15 ns) to minimize dwell time error and ensure precise fuel metering.

Use Value: Avalanche rating absorbs back-EMF from injector coil collapse without external diode, reducing BOM count and PCB area.

Use Scenario: PWM-controlled 24 V blower motor delivering variable airflow across cabin zones.

IC Role / Device Role / Timing Role: High-current half-bridge low-side switch operating at 25 kHz with 10%–90% duty cycle.

Use Value: 27 mΩ R_DS(on) limits conduction loss to <0.33 W at 30 A, enabling natural convection cooling in confined dash modules.

Body Control Module (BCM) Headlamp Relay Replacement

Start-Stop System Solenoid Actuator

Use Scenario: Solid-state replacement for mechanical relays controlling LED headlamps with inrush current up to 40 A.

IC Role / Device Role / Timing Role: Direct-drive power switch interfaced to 3.3 V CAN/LIN microcontroller with integrated overcurrent protection.

Use Value: Logic-level gate threshold ensures full enhancement using MCU GPIO, eliminating level-shifter components and reducing system latency.

Use Scenario: High-reliability actuation of starter solenoid in 12 V start-stop systems with frequent cycling (≥500,000 cycles).

IC Role / Device Role / Timing Role: Robust power switch handling 42 A inrush and sustaining 25 A hold current at elevated under-hood temperatures.

Use Value: 175°C T_J rating and 11 mJ repetitive avalanche energy prevent failure during repeated cranking pulses in hot soak conditions.

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel automotive power MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STL220N4LF6AG	60 V V_DS, 2.5 mΩ R_DS(on) @ 10 V, DFN5x6 package	Surface-mount only; lacks isolated tab for direct heatsinking	Preferred for space-constrained, high-efficiency ADAS ECUs where thermal interface is managed via PCB copper
IRLR8729PBF	60 V V_DS, 3.1 mΩ R_DS(on) @ 10 V, TO-252 (D-Pak)	No AEC-Q101 qualification; lower T_J max (175°C same, but qualification not validated)	Suitable for non-safety-critical industrial controls where cost is prioritized over automotive compliance

Compared with STL220N4LF6AG and IRLR8729PBF, AUIRLU2905 trades lower R_DS(on) for proven automotive qualification, through-hole mechanical robustness, and integrated avalanche ruggedness-making it optimal for production-critical under-hood switching where reliability outweighs marginal efficiency gains.

Availability

AUIRLU2905 is available at Aetrix Electronics and suitable for engine control units, body control modules, and start-stop system solenoid drivers requiring stable component supply across multi-year automotive production programs.

Supply support for AUIRLU2905 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control ICs, with global manufacturing and qualification infrastructure.

AUIRLU2905 belongs to Infineon's AEC-Q101-qualified HEXFET® automotive power MOSFET product line, engineered specifically for high-reliability, high-temperature switching in engine, transmission, and chassis control systems.

FAQ

Is AUIRLU2905 pin-compatible with AUIRLR2905?

No. AUIRLU2905 uses I-Pak (TO-220AB) packaging with isolated drain tab and 3-pin vertical leads, while AUIRLR2905 uses D-Pak (TO-252AA) with surface-mount footprint and non-isolated drain pad. Mechanical and thermal mounting differ fundamentally; PCB layout and heatsinking must be redesigned.

What is the maximum recommended gate resistor value for PWM switching at 50 kHz?

For 50 kHz PWM with minimal overshoot and EMI, a 10 Ω series gate resistor is recommended. This balances switching speed (t_r/t_f ~80–15 ns) against ringing suppression, given the device's Q_gd = 25 nC and typical driver output impedance of 2–5 Ω.

Does AUIRLU2905 require a freewheeling diode when driving inductive loads?

No external diode is required for basic unclamped inductive switching due to its fully rated body diode (V_SD = 1.3 V, t_rr = 80–120 ns) and 200 mJ single-pulse avalanche capability. However, for high-frequency or high-energy recovery, a Schottky clamp improves efficiency and reduces voltage spikes.

Can AUIRLU2905 be used in parallel configurations?

Yes-its positive R_DS(on) temperature coefficient (0.070 V/°C) enables inherent current sharing. Use matched gate resistors (±1%), symmetrical PCB layout, and shared heatsink to ensure thermal balance; parallel operation supports >80 A total current with proper thermal design.

AUIRLU2905 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: HEXFET®

Package/Case:: TO-251-3 Short Leads, IPAK, TO-251AA

Packaging:: Tube

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 55 V

Current - Continuous Drain (Id) @ 25°C:: 42A (Tc)

Drive Voltage (Max Rds On, Min Rds On):: 4V, 10V

Rds On (Max) @ Id, Vgs:: 27mOhm @ 25A, 10V

Vgs(th) (Max) @ Id:: 2V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 48 nC @ 5 V

Vgs (Max):: ±16V

Input Capacitance (Ciss) (Max) @ Vds:: 1700 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 110W (Tc)

Operating Temperature:: -55°C ~ 175°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: IPAK

AUIRLU2905 FAQ

1.How can I place an order for AUIRLU2905 through Aetrix?

Please submit a Request for Quotation (RFQ) for AUIRLU2905 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for AUIRLU2905 reliable?

The price and inventory of AUIRLU2905 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AUIRLU2905 is usually 5 days.

3.What payment methods are accepted for AUIRLU2905?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AUIRLU2905 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AUIRLU2905?

AUIRLU2905 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AUIRLU2905 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for AUIRLU2905?

For technical support, including AUIRLU2905 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AUIRLU2905 requirements.

6.How does Aetrix verify that AUIRLU2905 is sourced from the original manufacturer or authorized distributors?

All AUIRLU2905 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AUIRLU2905 meets industry standards.

7.What is the process for return or replacement of AUIRLU2905?

All AUIRLU2905 units undergo pre-shipment inspection (PSI). If there is an issue with AUIRLU2905, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The AUIRLU2905 part is unused and in its original packaging.

Return procedure for AUIRLU2905:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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