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

Infineon Technologies AUIRLR2905

Name: AUIRLR2905
Brand: Infineon Technologies
SKU: AUIRLR2905
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AUIRLR2905

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

Package:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Datasheet:: AUIRLR2905.pdf

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

Quantity:: RFQ Add To RFQ list

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Inventory:4,265

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Product details

Overview

AUIRLR2905 from Infineon Technologies is an N-channel enhancement-mode MOSFET designed for high-efficiency DC-DC conversion and motor control in automotive power systems. It features 55 V V_DS, 42 A continuous drain current (I_D), R_DS(on) of 12 mΩ at V_GS = 10 V, and operates up to 175 °C junction temperature. Used in engine control units and electric power steering H-bridge drivers.

For engineers reviewing the AUIRLR2905 datasheet, AUIRLR2905 pinout, AUIRLR2905 application, or AUIRLR2905 equivalent, key selection criteria include its automotive-grade qualification (AEC-Q101), low gate charge (Q_g = 48 nC), and DPAK package thermal performance under pulsed load conditions.

Technical Context

This MOSFET employs trench-gate technology to achieve low R_DS(on) and fast switching with minimal Miller capacitance (C_rss = 50 pF). Its threshold voltage (V_GS(th)) ranges from 1.0 V to 2.5 V, enabling robust gate drive compatibility with 3.3 V and 5 V logic controllers.

The device integrates avalanche-rated ruggedness (E_AS = 110 mJ) and exhibits tight parametric distribution across temperature-critical for parallel operation in high-current inverters and bidirectional battery switches.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	55 V - Maximum blocking voltage for 12 V automotive battery systems with load dump transients.
I_D (continuous)	42 A @ T_C = 25 °C - Sustained current capability with heatsink; derates to 28 A at 100 °C case temperature.
R_DS(on)	12 mΩ @ V_GS = 10 V - Enables <1.5 W conduction loss at 30 A, reducing thermal stress in compact modules.
Q_g	48 nC - Low total gate charge minimizes driver power and enables efficient 100 kHz+ PWM operation.
E_AS	110 mJ - Rated single-pulse avalanche energy supports inductive load switching without external snubbers.
T_J max	175 °C - Extended junction temperature rating ensures reliability in under-hood environments.

Pinout & Package

Supplied in surface-mount DPAK (TO-252) package with exposed drain pad for enhanced thermal dissipation. Standard three-terminal configuration: Gate (G), Drain (D), Source (S).

Pin/Terminal	Circuit Role	Design Meaning
G	Gate control input	Receives PWM signal; requires 10 V drive for full enhancement; Miller plateau at ~3.5 V.
D	Drain terminal	Connected to high-side switch node or inductive load; ties to exposed metal pad for thermal path.
S	Source reference	Common return for gate drive and current sensing; tied to PCB ground plane for low-inductance layout.

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive applications including engine management, transmission control, and ADAS power stages.
Trench MOSFET architecture	Delivers 20% lower R_DS(on) vs. planar equivalents at same die size, improving power density.
175 °C maximum junction temperature	Enables operation in high-ambient under-hood locations without derating penalties typical of 150 °C parts.
Low Q_gd/Q_g ratio (0.28)	Reduces switching losses during hard commutation and improves EMI behavior in motor drives.

Applications

Engine Control Unit (ECU) Fuel Injector Driver

Electric Power Steering (EPS) H-Bridge

Use Scenario: High-speed, high-reliability switching of 12 V fuel injectors with peak currents up to 35 A.

IC Role / Device Role / Timing Role: Low-side switching element controlling injector coil energization timing with sub-microsecond turn-on delay.

Use Value: 12 mΩ R_DS(on) limits resistive heating during extended duty cycles; AEC-Q101 ensures 15-year field life.

Use Scenario: Bidirectional motor current control in 12 V EPS systems requiring regenerative braking capability.

IC Role / Device Role / Timing Role: Half-bridge low-side switch enabling precise PWM-controlled torque delivery and energy recovery.

Use Value: 110 mJ E_AS withstands inductive kickback during rapid direction reversal without clamping diodes.

Automotive DC-DC Converter Primary Switch

Body Control Module (BCM) Load Driver

Use Scenario: Primary-side switch in synchronous buck converters stepping 12 V battery down to 3.3 V/5 V for microcontrollers and sensors.

IC Role / Device Role / Timing Role: High-frequency (200–500 kHz) power switch with low Q_g minimizing driver losses and gate drive complexity.

Use Value: 48 nC Q_g allows use of low-cost integrated gate drivers (e.g., IRS2007) without external boost capacitors.

Use Scenario: Driving solenoids, relays, and LED arrays in door modules, lighting, and HVAC actuators.

IC Role / Device Role / Timing Role: Protected high-current load switch with integrated overtemperature and short-circuit detection.

Use Value: 175 °C T_J max prevents thermal shutdown in sealed BCM enclosures during summer ambient conditions.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STL130N5LF6AG	R_DS(on) = 10.5 mΩ at 10 V but rated only to 150 °C T_J; higher Q_g (62 nC).	Lacks AEC-Q101 certification; suitable for industrial but not safety-critical automotive functions.	Prefer when lower R_DS(on) outweighs temperature and qualification requirements.
IRLR8729PBF	Same DPAK package and 55 V rating, but R_DS(on) = 14 mΩ and Q_g = 42 nC; legacy planar process.	Legacy automotive qualification (AEC-Q101 rev 0); less optimized for high-frequency switching.	Select if supply chain continuity favors mature Infineon platform with known layout compatibility.

Compared with STL130N5LF6AG and IRLR8729PBF, the AUIRLR2905 delivers superior thermal margin and tighter parametric consistency for safety-critical automotive power stages, while maintaining gate drive simplicity and board-level layout compatibility.

Availability

AUIRLR2905 is available at Aetrix Electronics and suitable for engine control units, electric power steering systems, and automotive DC-DC converters requiring stable component supply across multi-year vehicle production cycles.

Supply support for AUIRLR2905 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 security solutions, with global R&D and manufacturing infrastructure.

The OptiMOS™ T2 product line-under which AUIRLR2905 is categorized-is engineered specifically for high-efficiency, high-reliability 12 V automotive power conversion and motor control applications.

FAQ

What is the maximum safe operating voltage for AUIRLR2905 in automotive load-dump conditions?

The AUIRLR2905 has a 55 V V_DS rating and is validated per ISO 7637-2 Pulse 5a (load dump) up to 40 V sustained and 60 V transient peaks for ≤400 ms. Its avalanche rating (E_AS = 110 mJ) provides margin beyond clamp diode protection in unregulated 12 V systems.

Can AUIRLR2905 be paralleled for higher current handling?

Yes-its positive temperature coefficient of R_DS(on) and tight V_GS(th) distribution (1.0–2.5 V) enable stable current sharing. Layout must ensure matched gate trace inductance and symmetric source routing; thermal coupling via shared copper area is recommended.

Does AUIRLR2905 require a gate resistor for automotive PWM applications?

A gate resistor (typically 5–15 Ω) is required to damp ringing caused by PCB trace inductance and MOSFET output capacitance. Values below 5 Ω risk shoot-through in half-bridge configurations; above 20 Ω increases switching losses unnecessarily at 100–500 kHz frequencies.

Is the DPAK package of AUIRLR2905 RoHS and REACH compliant?

Yes-the AUIRLR2905 DPAK package meets RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006, with lead-free matte tin plating on terminals and halogen-free molding compound per IEC 61249-2-21.

AUIRLR2905 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: HEXFET®

Package/Case:: TO-252-3, DPAK (2 Leads + Tab), SC-63

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:: Surface Mount

Supplier Device Package:: TO-252AA (DPAK)

AUIRLR2905 FAQ

1.How can I place an order for AUIRLR2905 through Aetrix?

Please submit a Request for Quotation (RFQ) for AUIRLR2905 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 AUIRLR2905 reliable?

The price and inventory of AUIRLR2905 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AUIRLR2905 is usually 5 days.

3.What payment methods are accepted for AUIRLR2905?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AUIRLR2905 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AUIRLR2905?

AUIRLR2905 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AUIRLR2905 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 AUIRLR2905?

For technical support, including AUIRLR2905 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AUIRLR2905 requirements.

6.How does Aetrix verify that AUIRLR2905 is sourced from the original manufacturer or authorized distributors?

All AUIRLR2905 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 AUIRLR2905 meets industry standards.

7.What is the process for return or replacement of AUIRLR2905?

All AUIRLR2905 units undergo pre-shipment inspection (PSI). If there is an issue with AUIRLR2905, 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 AUIRLR2905 part is unused and in its original packaging.

Return procedure for AUIRLR2905:

1.Submit a request within 90 days.

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

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