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

Infineon Technologies AUIRLL024N

Name: AUIRLL024N
Brand: Infineon Technologies
SKU: AUIRLL024N
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AUIRLL024N

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

Package:: TO-261-4, TO-261AA

Datasheet:: AUIRLL024N.pdf

Description:: MOSFET N-CH 55V 3.1A SOT-223

Quantity:: RFQ Add To RFQ list

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Inventory:2,976

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Product details

Overview

AUIRLL024N from Infineon is an automotive-grade N-channel HEXFET® Power MOSFET in SOT-223 package, rated for 55 V V_DS, 3.1 A continuous drain current at T_A = 70°C, and 0.065 Ω R_DS(on) at V_GS = 10 V. It features logic-level gate drive, 150°C junction operation, and full avalanche rating-designed for low-power DC-DC converters, body control modules, and LED lighting drivers in passenger vehicles.

For engineers reviewing the AUIRLL024N datasheet, AUIRLL024N pinout, AUIRLL024N application, or AUIRLL024N equivalent, key selection criteria include its 0.065 Ω on-resistance at 10 V gate drive, 12 A pulsed drain capability, 150°C thermal rating, SOT-223 footprint compatibility, and AEC-Q101 qualification status for under-hood use.

Technical Context

This MOSFET employs Infineon's advanced planar silicon process to achieve low specific on-resistance while maintaining robust dv/dt immunity (5.0 V/ns) and fast switching (t_r = 21 ns, t_f = 25 ns). Its body diode exhibits 39–58 ns reverse recovery time and 63–94 nC Q_rr, enabling efficient synchronous rectification in buck topologies.

The device is fully specified for repetitive avalanche operation up to T_jmax = 150°C, with E_AS = 120 mJ (single-pulse) and E_AR = 0.1 mJ (repetitive), supporting fault-tolerant designs in automotive load-switching applications where inductive energy dissipation is critical.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	55 V - Withstands battery transients up to ISO 7637-2 Pulse 5a (clamped 58 V) in 12 V systems
R_DS(on) max	0.065 Ω @ V_GS = 10 V, I_D = 3.1 A - Enables <195 mW conduction loss at 3.1 A, suitable for thermally constrained PCB layouts
I_D cont @ T_A = 70°C	2.5 A - Derated current for reliable operation on FR-4 boards without heatsink
Q_g	10.4–15.6 nC - Low gate charge supports efficient 100–500 kHz PWM switching with standard logic-level drivers
T_J range	−55°C to +150°C - Meets AEC-Q101 requirements for engine bay and cabin electronics
E_AS	120 mJ - Absorbs unclamped inductive energy from solenoid or relay coils without failure
Package	SOT-223 (TO-261AA) - Surface-mount, 3-pin outline with exposed drain pad for thermal enhancement on 1-in² copper

Pinout & Package

SOT-223 package with integrated heat slug; drain connected to tab for direct thermal coupling to PCB copper. Standard 3-pin configuration: Gate (pin 1), Drain (pin 2, tab), Source (pin 3).

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (G)	Gate	Logic-level input requiring ≥4.0 V for full enhancement; 2.7 V threshold enables direct microcontroller drive
Pin 2 (D) / Tab	Drain	Main high-side switching node; electrically and thermally connected to exposed metal tab for PCB heat sinking
Pin 3 (S)	Source	Power return path and reference for gate drive; tied to ground or low-side switch node in common-source topology

Key Features

Feature	Design Value
Automotive qualification	AEC-Q101 qualified per Infineon specification - validated for temperature cycling, humidity, and mechanical shock in automotive environments
Logic-level gate drive	V_GS(th) = 1.0–2.0 V - Operates reliably with 3.3 V or 5 V MCU GPIO without level-shifting circuitry
Fully avalanche rated	E_AR = 0.1 mJ repetitive - Sustains repeated inductive turn-off events in motor driver or solenoid control without degradation
Low thermal resistance	R_θJA = 50 °C/W (1-in² copper) - Enables 2.1 W power dissipation at 25°C ambient before reaching 150°C junction limit
RoHS-compliant & lead-free	Meets EU RoHS Directive 2011/65/EU - compatible with lead-free reflow profiles (peak 260°C)

Applications

Body Control Module (BCM)

Automotive LED Headlamp Driver

Use Scenario: Switching 12 V loads such as door locks, window motors, and interior lighting in centralized vehicle control units.

IC Role / Device Role / Timing Role: Low-side power switch controlled by CAN/LIN interface MCU; handles 2–3 A steady-state loads with 12 A surge capability.

Use Value: 0.065 Ω R_DS(on) minimizes voltage drop and self-heating during extended duty cycles, improving system efficiency and reliability over 15-year vehicle life.

Use Scenario: Driving high-brightness white LEDs in adaptive front-lighting systems (AFS) with PWM dimming.

IC Role / Device Role / Timing Role: High-side or low-side PWM switch operating at 200–500 kHz; synchronized to MCU timer outputs.

Use Value: Fast 21 ns rise time and 25 ns fall time enable precise dimming resolution; 150°C rating ensures stable performance near hot optics assemblies.

Engine Control Unit (ECU) Auxiliary Load Switch

12 V DC-DC Buck Converter Primary Switch

Use Scenario: Controlling fuel pump relays, purge valves, and HVAC actuators in engine compartment locations.

IC Role / Device Role / Timing Role: Fault-tolerant load switch with integrated avalanche energy handling; triggered by ECU PWM or digital output.

Use Value: 120 mJ single-pulse avalanche rating safely clamps inductive kickback from 24 V solenoids, eliminating need for external TVS diodes.

Use Scenario: High-efficiency step-down conversion from 12 V battery to 5 V or 3.3 V for infotainment and ADAS subsystems.

IC Role / Device Role / Timing Role: Synchronous rectifier or primary-side switch in discrete buck regulator with external controller.

Use Value: Low Q_g (10.4 nC) reduces gate drive losses; 58 pF Crss minimizes Miller-induced shoot-through risk at high switching frequencies.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STL10DN5LF3	Lower R_DS(on) (0.045 Ω), but only 40 V V_DS; SOT-23-3 package limits power handling	Not suitable for 55 V transients or >2 A continuous loads; limited to low-power sensor interfaces	Select only if system operates strictly within 36 V max and requires ultra-low on-resistance in space-constrained layouts
DMN3022LSD-13	Higher R_DS(on) (0.095 Ω), dual-N in SO-8; 30 V rating, not automotive-qualified	Lacks AEC-Q101 certification and avalanche rating; unsuitable for safety-critical or under-hood use	Acceptable only for non-automotive industrial prototypes where cost outweighs qualification and ruggedness requirements

Compared with STL10DN5LF3 and DMN3022LSD-13, the AUIRLL024N uniquely balances 55 V rating, AEC-Q101 compliance, 0.065 Ω on-resistance, and SOT-223 thermal performance-making it the only option among the three qualified for production automotive power switching.

Availability

AUIRLL024N is available at Aetrix Electronics and suitable for automotive body control modules, LED lighting drivers, and engine control auxiliary switches requiring stable component supply across multi-year vehicle production programs.

Supply support for AUIRLL024N 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.

The AUIRLL024N belongs to Infineon's automotive-qualified HEXFET® Power MOSFET product line, engineered specifically for robust, high-reliability switching in 12 V and 24 V vehicle electrical systems.

FAQ

Is AUIRLL024N pin-compatible with standard SOT-223 MOSFETs?

Yes-AUIRLL024N uses the industry-standard SOT-223 (TO-261AA) footprint with Gate (pin 1), Drain (pin 2/tab), and Source (pin 3) assignment. Mechanical dimensions match JEDEC MO-178AB, enabling drop-in replacement where thermal and electrical specs align.

What is the maximum recommended PCB copper area for thermal performance?

For optimal R_θJA = 50 °C/W, Infineon specifies a 1-inch square (25.4 mm × 25.4 mm) copper pad connected to the drain tab. Minimum recommended FR-4 footprint is 12.1 mm × 7.1 mm with thermal vias to inner layers, per datasheet Figure 8.

Does AUIRLL024N require a gate resistor for automotive PWM switching?

A gate resistor (typically 10–24 Ω) is recommended to dampen ringing and control dV/dt during switching. The datasheet specifies t_d(on), t_r, t_d(off), and t_f using R_G = 24 Ω; omitting it may cause EMI or shoot-through in high-speed applications.

Can AUIRLL024N be used in linear (analog) regulation mode?

No-it is not characterized or rated for linear-mode operation. The Safe Operating Area (SOA) curve (Figure 8) shows operation is limited to pulse widths ≤10 ms at 55 V; sustained linear bias risks thermal runaway due to positive R_DS(on) temperature coefficient.

AUIRLL024N Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: HEXFET®

Package/Case:: TO-261-4, TO-261AA

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:: 3.1A (Ta)

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

Rds On (Max) @ Id, Vgs:: 65mOhm @ 3.1A, 10V

Vgs(th) (Max) @ Id:: 2V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 15.6 nC @ 5 V

Vgs (Max):: ±16V

Input Capacitance (Ciss) (Max) @ Vds:: 510 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 1W (Ta)

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-223

AUIRLL024N FAQ

1.How can I place an order for AUIRLL024N through Aetrix?

Please submit a Request for Quotation (RFQ) for AUIRLL024N 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 AUIRLL024N reliable?

The price and inventory of AUIRLL024N are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AUIRLL024N is usually 5 days.

3.What payment methods are accepted for AUIRLL024N?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AUIRLL024N transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AUIRLL024N?

AUIRLL024N orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AUIRLL024N 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 AUIRLL024N?

For technical support, including AUIRLL024N datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AUIRLL024N requirements.

6.How does Aetrix verify that AUIRLL024N is sourced from the original manufacturer or authorized distributors?

All AUIRLL024N 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 AUIRLL024N meets industry standards.

7.What is the process for return or replacement of AUIRLL024N?

All AUIRLL024N units undergo pre-shipment inspection (PSI). If there is an issue with AUIRLL024N, 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 AUIRLL024N part is unused and in its original packaging.

Return procedure for AUIRLL024N:

1.Submit a request within 90 days.

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

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