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

Infineon Technologies AUIRLS3114Z

Name: AUIRLS3114Z
Brand: Infineon Technologies
SKU: AUIRLS3114Z
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AUIRLS3114Z

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

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

Datasheet:: AUIRLS3114Z.pdf

Description:: MOSFET N-CH 40V 56A DPAK

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AUIRLS3114Z from Infineon is an automotive-grade N-channel enhancement-mode HEXFET® Power MOSFET in D2-Pak (TO-263) package, rated for 40 V V_DS, 3.8 mΩ typ. R_DS(on) at V_GS = 10 V, and 56 A continuous drain current (package-limited). It delivers ultra-low conduction loss, 175°C junction operation, and robust repetitive avalanche capability - deployed in high-current DC-DC converters and motor control stages of engine management systems.

For engineers reviewing the AUIRLS3114Z datasheet, AUIRLS3114Z pinout, AUIRLS3114Z application, or AUIRLS3114Z equivalent, key selection criteria include its logic-level gate drive compatibility (V_GS(th) = 1.0–2.5 V), fast switching (t_r = 271 ns, t_f = 60 ns), and thermal performance (R_θJC = 1.05 °C/W) under automotive ambient constraints.

Technical Context

This MOSFET employs advanced trench-gate silicon process technology to achieve low R_DS(on) per die area while maintaining high dv/dt immunity (2.3 V/ns) and di/dt capability (263 A/µs). Its body diode exhibits low V_SD = 1.3 V at 56 A and fast reverse recovery (t_rr = 33–50 ns, Q_rr = 32–48 nC), enabling efficient synchronous rectification and freewheeling in hard-switched topologies.

The device supports unclamped inductive switching with single-pulse avalanche energy E_AS = 518 mJ (tested) and repetitive avalanche rating up to T_jmax. Thermal design is anchored to R_θJC = 1.05 °C/W and linear derating factor of 0.95 W/°C above 25°C case temperature.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	40 V - Maximum blocking voltage in high-side switch configurations without derating in 12 V/24 V automotive systems.
R_DS(on) typ.	3.8 mΩ @ V_GS = 10 V, I_D = 56 A - Enables <1.2 W conduction loss at 56 A, reducing heatsink requirements.
I_D (pkg-lim)	56 A @ T_C = 25°C - Package wirebond limit defines practical continuous current in PCB-mounted applications.
t_r/t_f	271 ns / 60 ns @ V_DD = 20 V, R_G = 3.7 Ω - Supports >200 kHz switching in buck converters with controlled EMI.
Q_g	35–53 nC - Low gate charge enables efficient driving with standard gate drivers (e.g., IR2104, UCC27531).
T_j max	175°C - Certified for under-hood operation in engine control units and transmission control modules.
E_AS (tested)	518 mJ - Confirmed avalanche ruggedness allows reliable operation during load dump or inductive kick events.

Pinout & Package

Package: D2-Pak (TO-263), surface-mount, isolated tab (drain-connected), thermally enhanced for PCB copper pour mounting.

Pin/Terminal	Circuit Role	Design Meaning
Tab (exposed metal)	Drain (D)	Primary heat path to PCB; electrically connected to drain; requires isolation from ground plane unless drain-referenced layout.
Lead 1 (left)	Gate (G)	High-impedance control terminal; requires low-inductance gate loop to minimize ringing during fast switching.
Lead 2 (center)	Source (S)	Power return path for load current; serves as reference for gate drive and current sensing in high-side configurations.
Lead 3 (right)	Drain (D)	Secondary drain connection; paralleled with tab for lower inductance in high-di/dt applications.

Key Features

Feature	Design Value
Logic-level gate drive	V_GS(th) = 1.0–2.5 V enables direct interface with 3.3 V/5 V microcontrollers without level-shifting.
Repetitive avalanche rating	Rated for repeated unclamped inductive switching up to T_jmax, eliminating need for external snubbers in solenoid drivers.
Enhanced dv/dt immunity	2.3 V/ns - Resists false turn-on during high-noise transients in starter-generator or EPS control circuits.
Automotive qualification	AEC-Q101 qualified; 175°C operation validated per JESD22-A108; compliant with ISO/TS 16949 manufacturing controls.
Low output capacitance	C_oss = 633 pF @ V_DS = 25 V - Reduces switching loss in ZVS resonant converters and improves light-load efficiency.

Applications

Engine Control Unit (ECU) Fuel Injector Driver

Electric Power Steering (EPS) Motor Phase Switch

Use Scenario: High-speed, high-current switching of 12 V fuel injectors with peak currents up to 50 A and pulse widths <2 ms.

IC Role / Device Role / Timing Role: Low-side power switch controlling injector coil energization and demagnetization via body diode freewheeling.

Use Value: 3.8 mΩ R_DS(on) minimizes I²R heating during extended duty cycles; 175°C rating ensures reliability near hot engine blocks.

Use Scenario: Half-bridge phase leg in 12 V EPS motor inverter, switching at 10–20 kHz with 40 A RMS phase current.

IC Role / Device Role / Timing Role: N-channel MOSFET in low-side position, synchronized with high-side driver for PWM-controlled torque delivery.

Use Value: Fast t_f = 60 ns and low Q_rr = 32 nC reduce cross-conduction losses and body diode reverse recovery stress.

48 V Mild Hybrid DC-DC Converter Primary Switch

Automotive HVAC Blower Motor Controller

Use Scenario: Primary-side switch in bidirectional 48 V–12 V LLC resonant converter handling 80 A peak primary current.

IC Role / Device Role / Timing Role: Synchronous rectifier replacement for secondary-side high-current path, operating in forced-commutation mode.

Use Value: C_{oss eff} = 875 pF enables predictable soft-switching transitions; R_θJC = 1.05 °C/W supports compact heatsink integration.

Use Scenario: PWM-controlled blower motor driver in climate control system, delivering 30–60 A continuous current across variable speed profiles.

IC Role / Device Role / Timing Role: High-current low-side switch interfacing with MCU-based PWM generator and current-sense amplifier.

Use Value: Logic-level gate threshold allows direct drive from automotive-grade 5 V MCU GPIO; avalanche rating handles motor stall transients.

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
STL220N4F7AG	R_DS(on) = 3.7 mΩ @ 10 V but rated for 40 V only at T_j ≤ 150°C; no AEC-Q101 certification.	Suitable for non-safety-critical 12 V systems (e.g., infotainment power rails); not qualified for engine bay deployment.	Select when cost sensitivity outweighs under-hood temperature and qualification requirements.
IRL1404ZPBF	Higher R_DS(on) = 5.5 mΩ; same D2-Pak package; AEC-Q101 qualified but limited to 150°C T_j.	Acceptable for lower-power EPS assist or seat motor control where thermal margin is relaxed.	Choose if legacy footprint compatibility is required and 175°C operation is unnecessary.

Compared with STL220N4F7AG and IRL1404ZPBF, AUIRLS3114Z uniquely combines 175°C operation, AEC-Q101 qualification, and sub-4 mΩ on-resistance - making it the only option certified for sustained use in engine control, transmission, and safety-critical 48 V hybrid subsystems.

Availability

AUIRLS3114Z is available at Aetrix Electronics and suitable for engine control units, electric power steering systems, and 48 V mild hybrid DC-DC converters requiring stable component supply across multi-year automotive production programs.

Supply support for AUIRLS3114Z 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 R&D and wafer fabrication infrastructure.

AUIRLS3114Z belongs to Infineon's automotive-qualified HEXFET® Power MOSFET product line, engineered specifically for high-reliability, high-current switching in engine, chassis, and electrification subsystems.

FAQ

What is the maximum continuous drain current for AUIRLS3114Z at 100°C case temperature?

At T_C = 100°C, the continuous drain current is 86 A (silicon-limited) per datasheet Section "Absolute Maximum Ratings". However, the package wirebond limit remains 56 A regardless of temperature - this is the practical upper bound for sustained PCB-mounted operation with standard thermal relief.

Is AUIRLS3114Z compatible with standard gate drivers used in automotive MCUs?

Yes - its logic-level gate threshold (1.0–2.5 V) and low total gate charge (35–53 nC) allow direct drive from common automotive MCU GPIOs (e.g., NXP S32K, ST STM32G4) with series gate resistors ≤10 Ω. No level shifter or dedicated high-current driver is required for ≤200 kHz switching.

Does AUIRLS3114Z require external protection against load dump or jump-start transients?

No external TVS is required for basic load dump immunity: the device's 40 V V_DS rating exceeds ISO 7637-2 Pulse 5a (clamped to ~35 V) and its tested 518 mJ avalanche energy absorbs typical jump-start overshoots (≤40 V, <100 ms). System-level clamping remains recommended for >40 V events.

Can AUIRLS3114Z be used in parallel configurations for higher current handling?

Yes - its positive R_DS(on) temperature coefficient (normalized R_DS(on) rises with T_j) ensures inherent current sharing. Parallel operation requires matched gate drive paths, symmetrical PCB layout, and shared thermal mass; derating to 80% of aggregate current is advised for long-term reliability.

AUIRLS3114Z 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):: 40 V

Current - Continuous Drain (Id) @ 25°C:: 56A (Tc)

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

Rds On (Max) @ Id, Vgs:: 4.9mOhm @ 56A, 10V

Vgs(th) (Max) @ Id:: 2.5V @ 100µA

Gate Charge (Qg) (Max) @ Vgs:: 53 nC @ 4.5 V

Vgs (Max):: ±16V

Input Capacitance (Ciss) (Max) @ Vds:: 3617 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 143W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

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

AUIRLS3114Z FAQ

1.How can I place an order for AUIRLS3114Z through Aetrix?

Please submit a Request for Quotation (RFQ) for AUIRLS3114Z 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 AUIRLS3114Z reliable?

The price and inventory of AUIRLS3114Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AUIRLS3114Z is usually 5 days.

3.What payment methods are accepted for AUIRLS3114Z?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AUIRLS3114Z transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AUIRLS3114Z?

AUIRLS3114Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AUIRLS3114Z 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 AUIRLS3114Z?

For technical support, including AUIRLS3114Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AUIRLS3114Z requirements.

6.How does Aetrix verify that AUIRLS3114Z is sourced from the original manufacturer or authorized distributors?

All AUIRLS3114Z 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 AUIRLS3114Z meets industry standards.

7.What is the process for return or replacement of AUIRLS3114Z?

All AUIRLS3114Z units undergo pre-shipment inspection (PSI). If there is an issue with AUIRLS3114Z, 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 AUIRLS3114Z part is unused and in its original packaging.

Return procedure for AUIRLS3114Z:

1.Submit a request within 90 days.

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

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