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

Infineon Technologies AUIRLL2705TR

Name: AUIRLL2705TR
Brand: Infineon Technologies
SKU: AUIRLL2705TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AUIRLL2705TR

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

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

Datasheet:: AUIRLL2705TR.pdf

Description:: MOSFET N-CH 55V 5.2A SOT223

Quantity:: RFQ Add To RFQ list

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Inventory:9,024

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Product details

Overview

AUIRLL2705TR from Infineon is an automotive-grade N-channel logic-level HEXFET® Power MOSFET in SOT-223 package, rated for 55 V V_DS, 3.8 A continuous drain current at 25°C (V_GS = 10 V), and 0.04 Ω R_DS(on) max. It features fully avalanche-rated operation, 150°C junction temperature rating, and fast switching with 32 nC total gate charge - deployed in automotive body control modules for high-side load switching.

For engineers reviewing the AUIRLL2705TR datasheet, AUIRLL2705TR pinout, AUIRLL2705TR application, or AUIRLL2705TR equivalent, key selection criteria include logic-level gate drive compatibility (V_GS(th) = 1.0–2.0 V), PCB-mount thermal resistance (R_θJA = 93°C/W on FR-4), repetitive avalanche energy (0.10 mJ), and automotive qualification per AEC-Q101.

Technical Context

This device uses advanced planar silicon processing to achieve low R_DS(on) per die area while maintaining ruggedness. Its dynamic dv/dt rating (7.5 V/ns) and integral body diode (V_SD = 1.3 V at 3.8 A) support reliable inductive load commutation in 12 V automotive systems.

The MOSFET operates with logic-level gate drive (V_GS(th) ≤ 2.0 V), enabling direct interface with microcontroller GPIOs without level-shifting. Its 150°C T_J rating and full avalanche capability allow robust operation under transient overvoltage and short-circuit conditions common in vehicle power distribution networks.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	55 V - supports 12 V automotive battery systems with ≥3× overvoltage margin against load dump transients
R_DS(on) max	0.040 Ω @ V_GS = 10 V, I_D = 3.8 A - enables <150 mW conduction loss at 3.8 A, reducing thermal stress on PCB
I_D continuous	3.8 A @ T_A = 25°C, V_GS = 10 V - suitable for driving medium-power solenoids, fans, and LED arrays
Q_g	32 nC typ - determines gate driver current requirement (~1.6 mA avg for 20 kHz switching)
T_J max	+150°C - meets under-hood ambient requirements and enables derating-free operation up to 85°C board temperature
E_AS	110 mJ single-pulse - sustains unclamped inductive energy during fault events without failure
V_GS(th)	1.0–2.0 V - ensures turn-on with standard 3.3 V or 5 V MCU outputs, eliminating external gate drivers

Pinout & Package

SOT-223 (TO-261AA) package with exposed drain pad for thermal enhancement; 3-pin configuration optimized for surface-mount PCB assembly and moderate power dissipation (1.0 W on FR-4).

Pin/Terminal	Circuit Role	Design Meaning
G	Gate	Logic-level control input; requires ≤2.0 V to initiate conduction, compatible with 3.3 V/5 V digital outputs
D	Drain	Main power output terminal; electrically connected to exposed copper pad for thermal conduction to PCB
S	Source	Reference node for gate drive and current sensing; tied to ground or low-side return path

Key Features

Feature	Design Value
Logic-level gate drive	Operates fully enhanced at V_GS = 4.0 V (R_DS(on) = 0.065 Ω), enabling direct MCU interface without level shifters
Full avalanche rating	Rated for repetitive avalanche events up to T_Jmax; supports robust operation in inductive switching applications
Automotive qualification	AEC-Q101 qualified for use in safety-critical body electronics, including door modules and lighting controllers
Thermal performance	R_θJA = 93°C/W on FR-4 board - allows 3.8 A operation without heatsink in ambient ≤55°C

Applications

Body Control Module (BCM)

Automotive Lighting Control

Use Scenario: Switching 12 V loads such as window lift motors and seat adjusters in centralized vehicle body control units.

IC Role / Device Role / Timing Role: High-side load switch providing ON/OFF control with integrated protection against load dump and reverse battery.

Use Value: Eliminates need for external flyback diodes and gate driver ICs due to built-in avalanche ruggedness and logic-level drive.

Use Scenario: PWM dimming and on/off control of LED headlamps and interior lighting clusters.

IC Role / Device Role / Timing Role: Low-loss power switch operating at 100–500 Hz PWM frequencies with minimal thermal rise.

Use Value: 0.04 Ω R_DS(on) reduces conduction loss by >40% vs. legacy 0.07 Ω alternatives, extending LED driver lifetime.

Engine Bay Sensors

Power Distribution Unit (PDU)

Use Scenario: Power gating for pressure, temperature, and position sensors located near engine block.

IC Role / Device Role / Timing Role: Protected supply switch with thermal shutdown margin up to +125°C ambient.

Use Value: 150°C T_J rating ensures functional reliability where ambient exceeds 105°C, avoiding derating penalties.

Use Scenario: Secondary fuse replacement in 12 V distribution panels for auxiliary circuits (e.g., infotainment, HVAC).

IC Role / Device Role / Timing Role: Solid-state circuit breaker with fast turn-off (<57 ns fall time) and current limiting via sense-FET feedback.

Use Value: 30 A pulsed drain current (I_DM) supports surge handling during cold-crank, improving system fault tolerance.

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
IPB040N04LGATMA1	40 V V_DS, 0.004 Ω R_DS(on), TO-263 package - lower R_DS(on) but reduced voltage margin	Not suitable for 12 V load-dump environments (>45 V transients); requires larger PCB footprint	Select only if system voltage never exceeds 28 V and thermal budget permits TO-263 mounting
STL220N4LF7AG	40 V V_DS, 0.0022 Ω R_DS(on), PowerFLAT 5x6 - higher current density but non-automotive qualified	Lacks AEC-Q101 certification; not approved for safety-critical vehicle subsystems	Acceptable for non-safety consumer or industrial 12 V applications only; verify lifecycle compliance separately

Compared with IPB040N04LGATMA1 and STL220N4LF7AG, AUIRLL2705TR uniquely balances 55 V breakdown margin, AEC-Q101 qualification, and SOT-223 manufacturability - making it optimal for cost-sensitive, space-constrained automotive modules requiring field-proven ruggedness.

Availability

AUIRLL2705TR is available at Aetrix Electronics and suitable for automotive body control modules, LED lighting drivers, and engine bay sensor power gating requiring stable component supply across multi-year vehicle production cycles.

Supply support for AUIRLL2705TR 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.

AUIRLL2705TR belongs to the HEXFET® Automotive Power MOSFET product line, designed specifically for AEC-Q101-compliant high-reliability switching in 12 V vehicle electrical systems.

FAQ

Is AUIRLL2705TR suitable for high-side switching with 3.3 V microcontroller drive?

Yes. With V_GS(th) of 1.0–2.0 V and guaranteed R_DS(on) ≤ 0.065 Ω at V_GS = 4.0 V, it fully enhances using standard 3.3 V GPIO outputs. No external level shifter is required, and typical gate charge (32 nC) ensures fast turn-on even with modest driver strength.

What is the maximum continuous current at 85°C ambient temperature?

At T_A = 85°C on FR-4 board, derating begins at 8.3 mW/°C beyond 25°C. With P_D = 1.0 W at 25°C, usable power drops to ~0.5 W, supporting ~1.6 A continuous drain current (I_D ≈ √(P_D/R_DS(on))). This aligns with datasheet ID ratings at elevated temperatures.

Does AUIRLL2705TR include integrated ESD protection?

No. The device does not integrate dedicated ESD protection structures. System-level ESD protection (e.g., TVS diodes on gate and drain lines) is required per ISO 10605 standards for automotive applications. Gate oxide withstands ±16 V V_GS, but human-body-model ESD events exceed this limit without external clamping.

Can AUIRLL2705TR replace older IRLL2705PbF in existing designs?

Yes - AUIRLL2705TR is the automotive-qualified (AEC-Q101) and lead-free successor to IRLL2705PbF. Electrical specs, pinout, and package are identical. Key improvements include extended temperature range (−55°C to +150°C), full avalanche rating, and enhanced process control for zero-defect automotive production.

AUIRLL2705TR Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: HEXFET®

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

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 55 V

Current - Continuous Drain (Id) @ 25°C:: 5.2A (Ta)

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

Rds On (Max) @ Id, Vgs:: 40mOhm @ 3.8A, 10V

Vgs(th) (Max) @ Id:: 2V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 48 nC @ 10 V

Vgs (Max):: ±16V

Input Capacitance (Ciss) (Max) @ Vds:: 870 pF @ 25 V

FET Feature:: -

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

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

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: PG-SOT223-4

AUIRLL2705TR FAQ

1.How can I place an order for AUIRLL2705TR through Aetrix?

Please submit a Request for Quotation (RFQ) for AUIRLL2705TR 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 AUIRLL2705TR reliable?

The price and inventory of AUIRLL2705TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AUIRLL2705TR is usually 5 days.

3.What payment methods are accepted for AUIRLL2705TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AUIRLL2705TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AUIRLL2705TR?

AUIRLL2705TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AUIRLL2705TR 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 AUIRLL2705TR?

For technical support, including AUIRLL2705TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AUIRLL2705TR requirements.

6.How does Aetrix verify that AUIRLL2705TR is sourced from the original manufacturer or authorized distributors?

All AUIRLL2705TR 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 AUIRLL2705TR meets industry standards.

7.What is the process for return or replacement of AUIRLL2705TR?

All AUIRLL2705TR units undergo pre-shipment inspection (PSI). If there is an issue with AUIRLL2705TR, 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 AUIRLL2705TR part is unused and in its original packaging.

Return procedure for AUIRLL2705TR:

1.Submit a request within 90 days.

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

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