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

Infineon Technologies AUIRLR2905Z

Name: AUIRLR2905Z
Brand: Infineon Technologies
SKU: AUIRLR2905Z
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AUIRLR2905Z

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

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

Datasheet:: AUIRLR2905Z.pdf

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

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AUIRLR2905Z from Infineon is an automotive-grade N-channel enhancement-mode HEXFET® Power MOSFET in D-Pak package, rated for 55 V V_DS, 13.5 mΩ max R_DS(on) at V_GS = 10 V and 36 A, with 175°C maximum junction temperature and repetitive avalanche capability. It serves as a high-efficiency main or synchronous rectifier switch in 12 V automotive power systems including engine control modules and DC-DC converters.

For engineers reviewing the AUIRLR2905Z datasheet, AUIRLR2905Z pinout, AUIRLR2905Z application, or AUIRLR2905Z equivalent, key selection criteria include its silicon-limited 60 A continuous drain current at T_C = 25°C, ultra-low on-resistance enabling <1.5 W conduction loss at 40 A, fast switching (t_r = 130 ns, t_f = 33 ns), and validated 85 mJ single-pulse avalanche energy under defined test conditions.

Technical Context

This MOSFET employs Infineon's advanced trench process to achieve low R_DS(on) per die area while maintaining robust avalanche ruggedness and thermal stability up to 175°C. Its gate threshold voltage (1.0–3.0 V) ensures compatibility with standard 5 V and 10 V logic-level drivers in automotive microcontroller interfaces.

The device features a built-in body diode with 1.3 V forward voltage at 36 A and 22–33 ns reverse recovery time, supporting synchronous rectification and freewheeling in buck and half-bridge topologies. Thermal resistance R_θJC is 1.38°C/W, enabling high-power operation when mounted on copper-clad PCBs with heatsinking.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	55 V - Withstands transients up to ISO 7637-2 Pulse 5a (load dump) in 12 V automotive systems.
R_DS(on) max	13.5 mΩ @ V_GS = 10 V, I_D = 36 A - Enables ≤1.9 W conduction loss at 40 A, reducing thermal design burden.
I_D (silicon-limited)	60 A @ T_C = 25°C - Supports high-current motor drive and starter solenoid control without derating.
E_AS tested	85 mJ - Validated unclamped inductive switching energy at I_AS = 36 A, L = 89 µH, R_G = 25 Ω.
T_J max	+175°C - Meets AEC-Q101 requirements for under-hood applications including transmission control units.
Q_g	35 nC max - Enables efficient gate driving with <1.5 µC charge per 100 kHz switching cycle at 36 A.
C_oss eff	290 pF - Low effective output capacitance reduces turn-off losses and improves hard-switching efficiency.

Pinout & Package

Package: D-Pak (TO-252AA), surface-mount, single-sided heat dissipation via exposed drain pad. Standard footprint per Infineon AN-994.

Pin/Terminal	Circuit Role	Design Meaning
1 (G)	Gate	Controls channel conduction; requires ≥10 V for full enhancement; gate leakage <200 nA at ±16 V.
2 (S)	Source	Reference node for gate drive and current sensing; internal source inductance 7.5 nH affects di/dt-induced ringing.
3 (D)	Drain	Main power terminal; electrically connected to exposed copper pad for thermal and electrical conduction to PCB ground plane.

Key Features

Feature	Design Value
Ultra-low R_DS(on)	11 mΩ typical at V_GS = 10 V enables >96% efficiency in 12 V/40 A DC-DC stages.
Repetitive avalanche rating	Validated per Fig. 12a–12b and Fig. 15–16; supports unclamped inductive switching in solenoid and relay drivers.
175°C junction operation	Rated for continuous use in engine bay environments where ambient exceeds 125°C with proper board thermal design.
Fast switching	t_r = 130 ns / t_f = 33 ns at V_DD = 28 V, ID = 36 A, RG = 15 Ω - minimizes transition losses above 50 kHz.
Automotive qualification	AEC-Q101 qualified; lead-free, RoHS-compliant; qualified per Infineon's automotive stress test standards.

Applications

Engine Control Unit (ECU) Power Stage

Automotive DC-DC Converter

Use Scenario: High-side switching of fuel injector or ignition coil loads in gasoline/diesel ECUs.

IC Role / Device Role / Timing Role: Main power switch handling 12 V battery input, pulsed at up to 10 kHz with 1 ms on-time.

Use Value: 13.5 mΩ R_DS(on) limits resistive heating during extended cranking; 175°C rating prevents thermal shutdown during hot-soak conditions.

Use Scenario: Synchronous rectifier in 12 V to 5 V/3.3 V buck converter for infotainment and ADAS domain controllers.

IC Role / Device Role / Timing Role: Low-side synchronous rectifier operating at 300–500 kHz with zero-voltage switching assist.

Use Value: 1.3 V body diode forward drop and 22 ns trr enable efficient freewheeling; low Q_g allows direct MCU GPIO drive.

Transmission Control Module (TCM)

Electric Power Steering (EPS) Motor Driver

Use Scenario: PWM-controlled solenoid valve actuation for hydraulic pressure regulation in automatic transmissions.

IC Role / Device Role / Timing Role: Unclamped inductive switch subjected to repetitive avalanche events during rapid valve closure.

Use Value: 85 mJ tested E_AS and validated repetitive avalanche curves (Fig. 12c, 15, 16) ensure reliability over 10M+ cycles.

Use Scenario: Half-bridge leg in 12 V brushless DC motor driver for EPS torque assist.

IC Role / Device Role / Timing Role: High-current, high-dV/dt switching element requiring low C_oss and fast turn-off to suppress shoot-through risk.

Use Value: 290 pF C_oss(eff) and 33 ns fall time reduce Miller-induced false turn-on; R_θJC = 1.38°C/W supports 42 A package-limited current with minimal heatsink.

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
STL220N5LF8AG	R_DS(on) = 1.8 mΩ @ 10 V (lower), but V_DS = 40 V only; TO-263 package; higher Q_g (65 nC).	Not suitable for 55 V load dump; better for 5–12 V low-voltage EPS subsystems with tighter R_DS(on) tolerance.	Select when system V_DS stress remains <40 V and lower conduction loss outweighs gate drive complexity.
IRLR8729PBF	R_DS(on) = 12.5 mΩ @ 10 V, same V_DS = 55 V, but T_J max = 175°C and E_AS = 62 mJ (lower); D-Pak, non-automotive grade.	Lacks AEC-Q101 qualification; not recommended for safety-critical or under-hood deployment.	Acceptable for non-automotive industrial 12 V power supplies where qualification is not mandated.

Compared with STL220N5LF8AG and IRLR8729PBF, the AUIRLR2905Z uniquely balances 55 V rating, AEC-Q101 compliance, 85 mJ avalanche robustness, and D-Pak manufacturability-making it the preferred choice for production automotive power stages requiring field-proven ruggedness.

Availability

AUIRLR2905Z is available at Aetrix Electronics and suitable for engine control units, transmission control modules, and electric power steering systems requiring stable component supply across multi-year vehicle production cycles.

Supply support for AUIRLR2905Z 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 and discrete devices.

The AUIRLR2905Z belongs to Infineon's automotive-qualified HEXFET® Power MOSFET product line, engineered specifically for high-reliability, high-temperature switching in 12 V and 24 V vehicle electrical architectures.

FAQ

Is AUIRLR2905Z pin-compatible with standard D-Pak MOSFETs?

Yes, AUIRLR2905Z uses the industry-standard D-Pak (TO-252AA) outline with G-S-D pin order (pin 1 = Gate, pin 2 = Source, pin 3 = Drain). Its mechanical footprint and solder pad layout match JEDEC MS-012AC, enabling drop-in replacement in existing D-Pak designs without PCB revision.

What is the maximum allowable gate-to-source voltage for reliable operation?

The absolute maximum V_GS is ±16 V. Operation beyond this risks irreversible gate oxide breakdown. For robust long-term performance, gate drive should be clamped to +12 V (for full enhancement) and –5 V (for fast turn-off), especially in noisy automotive environments with coupled transients.

Does AUIRLR2905Z require a gate resistor for automotive applications?

Yes-a series gate resistor (typically 5–15 Ω) is required to dampen parasitic oscillation caused by gate-drain Miller capacitance and PCB trace inductance. Without it, ringing can exceed V_GS ratings and cause erratic switching or localized gate damage during high-dV/dt events like load dump.

Can AUIRLR2905Z be used in parallel configurations?

Yes, but only with matched devices and symmetrical PCB layout. Its positive R_DS(on) temperature coefficient (Fig. 10) provides inherent current sharing above 100°C; however, gate drive skew and source inductance imbalance must be minimized to avoid dynamic current hogging during turn-on/turn-off transitions.

AUIRLR2905Z 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):: 4.5V, 10V

Rds On (Max) @ Id, Vgs:: 13.5mOhm @ 36A, 10V

Vgs(th) (Max) @ Id:: 3V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 35 nC @ 5 V

Vgs (Max):: ±16V

Input Capacitance (Ciss) (Max) @ Vds:: 1570 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)

AUIRLR2905Z FAQ

1.How can I place an order for AUIRLR2905Z through Aetrix?

Please submit a Request for Quotation (RFQ) for AUIRLR2905Z 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 AUIRLR2905Z reliable?

The price and inventory of AUIRLR2905Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AUIRLR2905Z is usually 5 days.

3.What payment methods are accepted for AUIRLR2905Z?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AUIRLR2905Z transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AUIRLR2905Z?

AUIRLR2905Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AUIRLR2905Z 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 AUIRLR2905Z?

For technical support, including AUIRLR2905Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AUIRLR2905Z requirements.

6.How does Aetrix verify that AUIRLR2905Z is sourced from the original manufacturer or authorized distributors?

All AUIRLR2905Z 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 AUIRLR2905Z meets industry standards.

7.What is the process for return or replacement of AUIRLR2905Z?

All AUIRLR2905Z units undergo pre-shipment inspection (PSI). If there is an issue with AUIRLR2905Z, 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 AUIRLR2905Z part is unused and in its original packaging.

Return procedure for AUIRLR2905Z:

1.Submit a request within 90 days.

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

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