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

Infineon Technologies AUIRLL014N

Name: AUIRLL014N
Brand: Infineon Technologies
SKU: AUIRLL014N
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AUIRLL014N

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

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

Datasheet:: AUIRLL014N.pdf

Description:: MOSFET N-CH 55V 2A SOT-223

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AUIRLL014N from Infineon is an automotive-qualified N-channel HEXFET® Power MOSFET in SOT-223 package, rated for 55 V V_DS, 2.0 A continuous drain current at T_A = 25°C with 10 V gate drive, and 0.14 Ω max R_DS(on) at V_GS = 10 V. It delivers logic-level gate drive compatibility (V_GS(th) = 1.0–2.0 V), operates up to 150°C junction temperature, and is fully avalanche rated for robustness in automotive load-switching applications.

For engineers reviewing the AUIRLL014N datasheet, AUIRLL014N pinout, AUIRLL014N application, or AUIRLL014N equivalent, key selection criteria include its low R_DS(on) at 4–5 V gate drive, fast switching (t_r = 4.9 ns, t_f = 2.9 ns), repetitive avalanche capability (E_AR = 0.1 mJ), and qualification to AEC-Q101 standards for under-hood use.

Technical Context

This device employs advanced planar silicon processing to achieve high cell density and low on-resistance per unit area. Its logic-level gate threshold (1.0–2.0 V) enables direct interface with 3.3 V and 5 V microcontrollers without level-shifting circuitry.

The MOSFET features a fully rated body diode with t_rr = 41–61 ns and Q_rr = 73–110 nC, supporting synchronous rectification and flyback recovery in DC-DC converters. Its dynamic dv/dt rating of 7.2 V/ns ensures immunity to false turn-on during high-speed switching transients.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	55 V - Withstands automotive load-dump transients up to ISO 7637-2 Pulse 5a (±60 V).
R_DS(on) max	0.14 Ω @ V_GS = 10 V, I_D = 2.0 A - Enables <140 mW conduction loss at 1 A, critical for thermally constrained PCB-mount designs.
I_D cont.	2.0 A @ T_A = 25°C, V_GS = 10 V - Supports medium-power automotive loads such as LED drivers and solenoid controls.
V_GS(th)	1.0–2.0 V - Ensures reliable turn-on with standard 3.3 V MCU GPIOs and reduces gate drive power overhead.
E_AS	32 mJ - Provides single-pulse unclamped inductive energy handling for relay/snubberless motor control.
t_r/t_f	4.9 ns / 2.9 ns - Minimizes switching losses in PWM frequencies up to 500 kHz for compact DC-DC stages.
T_J max	+150°C - Certified for under-hood operation per AEC-Q101, enabling placement near heat sources.

Pinout & Package

SOT-223 (TO-261AA) surface-mount package with exposed drain pad for thermal enhancement; footprint optimized for FR-4 PCB mounting using minimum recommended copper area.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (Drain)	Main current path from source to load	Internally connected to exposed metal tab - must be soldered to large copper pour for thermal management and current conduction.
Pin 2 (Gate)	Control electrode	High-impedance input requiring <100 nA leakage; sensitive to ESD - requires gate resistor (RG ≈ 6 Ω typical) for controlled turn-off.
Pin 3 (Source)	Reference node for gate drive and current return	Common reference for V_GS; ties to ground or low-side shunt - forms Kelvin connection for accurate current sensing when separated from power source path.
Pin 4 (Drain, Tab)	Thermal and electrical drain connection	Electrically identical to Pin 1; primary heat dissipation path - must be electrically isolated from other layers unless used as system ground plane.

Key Features

Feature	Design Value
Logic-level gate drive	Operates fully enhanced at V_GS ≥ 4.0 V (R_DS(on) = 0.28 Ω), enabling direct MCU interface without external driver stages.
Repetitive avalanche rating	Rated for unlimited repetitive avalanche events up to T_Jmax = 150°C (E_AR = 0.1 mJ), supporting fault-tolerant motor phase-leg protection.
Dynamic dv/dt immunity	7.2 V/ns rated diode recovery dv/dt prevents spurious turn-on during fast inductive flyback transitions in H-bridge topologies.
AEC-Q101 qualification	Validated for automotive use including temperature cycling, humidity bias, and mechanical shock - suitable for engine control, lighting, and body electronics.

Applications

Automotive LED Headlamp Driver

Engine Control Unit (ECU) Solenoid Interface

Use Scenario: High-side switching of 12 V LED arrays in adaptive front-lighting systems with PWM dimming up to 2 kHz.

IC Role / Device Role / Timing Role: Low-side N-channel switch controlling cathode current; synchronized with MCU PWM output.

Use Value: 0.14 Ω R_DS(on) limits conduction loss to <280 mW at 2 A, enabling compact thermal design without heatsink on FR-4 board.

Use Scenario: Driving 12 V fuel injector or idle air control valve with peak currents up to 1.6 A and 10 ms pulse widths.

IC Role / Device Role / Timing Role: Low-side driver with integrated body diode providing freewheeling path during de-energization.

Use Value: 41–61 ns reverse recovery time and 73–110 nC Q_rr minimize voltage overshoot and EMI during valve coil collapse.

Automotive HVAC Blower Motor Control

Body Control Module (BCM) Window Lift Driver

Use Scenario: PWM-controlled 12 V DC blower motor with stall current up to 2.0 A and ambient temperatures up to 85°C.

IC Role / Device Role / Timing Role: Low-side switch in half-bridge configuration; body diode handles back-EMF during PWM off-time.

Use Value: 150°C T_J rating and 90 °C/W R_θJA (FR-4) ensure reliability in sealed HVAC enclosures without forced airflow.

Use Scenario: Bidirectional window lift/lower control using dual AUIRLL014N devices in H-bridge with 12 V supply and 1.3 A continuous current.

IC Role / Device Role / Timing Role: One device acts as low-side switch for lift direction; second provides low-side path for lower direction.

Use Value: Logic-level gate threshold allows direct 5 V MCU control; 0.20 Ω R_DS(on) @ V_GS = 5 V ensures <520 mW loss per device at 1.3 A.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STL10DN3LLH6	30 V V_DS, 0.012 Ω R_DS(on) @ 4.5 V, SOT-23 package	Lower voltage rating; unsuitable for 12 V load-dump environments; limited to ≤12 V systems	Select only for space-constrained 5 V logic interfaces where 55 V margin is unnecessary.
DMN3026LFG-7	30 V V_DS, 0.035 Ω R_DS(on) @ 4.5 V, SOT-223 package, no AEC-Q101	Lacks automotive qualification; not validated for temperature cycling or humidity bias testing	Acceptable for industrial or consumer-grade 12 V DC loads but not for safety-critical automotive modules.

Compared with STL10DN3LLH6 and DMN3026LFG-7, AUIRLL014N uniquely combines 55 V breakdown, AEC-Q101 qualification, and SOT-223 thermal performance - making it the only option among the three qualified for under-hood automotive switching above 12 V nominal systems.

Availability

AUIRLL014N is available at Aetrix Electronics and suitable for automotive LED drivers, ECU solenoid interfaces, and HVAC blower motor control requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for AUIRLL014N 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 AUIRLL014N belongs to Infineon's automotive-qualified HEXFET® Power MOSFET product line, designed specifically for robust, high-reliability switching in engine compartments, lighting, and body electronics under harsh environmental conditions.

FAQ

Is AUIRLL014N suitable for high-side switching configurations?

No - AUIRLL014N is an N-channel MOSFET with source tied to reference ground in SOT-223; high-side switching requires either a P-channel device or an N-channel with floating gate driver. Its pinout and logic-level gate do not support bootstrap or charge-pump-based high-side operation without additional circuitry.

What is the maximum PCB-mount power dissipation at 70°C ambient?

At T_A = 70°C, continuous drain current is derated to 1.6 A (V_GS = 10 V). With R_DS(on) = 0.14 Ω, conduction loss is 358 mW. Using R_θJA = 90 °C/W (FR-4), junction rise is 32°C - resulting in T_J = 102°C, well within the 150°C limit. Maximum safe power is ~1.0 W with proper copper area.

Does AUIRLL014N require a gate resistor for ESD protection?

A gate resistor (typically 10–100 Ω) is recommended not for ESD protection - which relies on internal Zener clamps - but to dampen ringing and control dI/dt during switching. The device's Q_g = 9.5–14 nC and low C_iss = 230 pF make it susceptible to oscillation without series gate resistance in high-speed layouts.

Can AUIRLL014N replace IRLL014P in existing designs?

No - IRLL014P is a P-channel device (−55 V, R_DS(on) = 0.22 Ω), while AUIRLL014N is N-channel (55 V, R_DS(on) = 0.14 Ω). They differ in polarity, gate drive polarity, and circuit topology requirements; substitution would require full schematic and layout revision, including gate drive inversion and current path re-routing.

AUIRLL014N 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:: 2A (Ta)

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

Rds On (Max) @ Id, Vgs:: 140mOhm @ 2A, 10V

Vgs(th) (Max) @ Id:: 2V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 14 nC @ 10 V

Vgs (Max):: ±16V

Input Capacitance (Ciss) (Max) @ Vds:: 230 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

AUIRLL014N FAQ

1.How can I place an order for AUIRLL014N through Aetrix?

Please submit a Request for Quotation (RFQ) for AUIRLL014N 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 AUIRLL014N reliable?

The price and inventory of AUIRLL014N are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AUIRLL014N is usually 5 days.

3.What payment methods are accepted for AUIRLL014N?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AUIRLL014N transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AUIRLL014N?

AUIRLL014N orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AUIRLL014N 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 AUIRLL014N?

For technical support, including AUIRLL014N datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AUIRLL014N requirements.

6.How does Aetrix verify that AUIRLL014N is sourced from the original manufacturer or authorized distributors?

All AUIRLL014N 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 AUIRLL014N meets industry standards.

7.What is the process for return or replacement of AUIRLL014N?

All AUIRLL014N units undergo pre-shipment inspection (PSI). If there is an issue with AUIRLL014N, 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 AUIRLL014N part is unused and in its original packaging.

Return procedure for AUIRLL014N:

1.Submit a request within 90 days.

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

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