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

Infineon Technologies AUIRFR8401TRL

Name: AUIRFR8401TRL
Brand: Infineon Technologies
SKU: AUIRFR8401TRL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AUIRFR8401TRL

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

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

Datasheet:: AUIRFR8401TRL.pdf

Description:: MOSFET N-CH 40V 100A DPAK

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AUIRFR8401TRL from Infineon is an automotive-grade N-channel D-Pak power MOSFET with 40 V V_BRDSS, 3.2 mΩ typ. R_DS(on) at V_GS = 10 V and 60 A, 175 °C maximum junction temperature, and rated for repetitive avalanche operation. It serves as a high-current, low-loss main switch in battery disconnect and electric power steering systems.

For engineers reviewing the AUIRFR8401TRL datasheet, AUIRFR8401TRL pinout, AUIRFR8401TRL application, or AUIRFR8401TRL equivalent, key selection criteria include its silicon-limited 100 A continuous drain current at T_C = 25 °C, 42 nC total gate charge, 2200 pF input capacitance, and automotive qualification per AEC-Q101 standards.

Technical Context

This HEXFET® device uses advanced silicon processing to achieve ultra-low on-resistance while maintaining rugged unclamped inductive switching capability. Its thermal design supports 175 °C continuous operation with R_θJC = 1.9 °C/W and enables stable performance under high di/dt conditions up to 918 A/µs.

The integrated body diode exhibits 28 ns reverse recovery time (T_J = 25 °C), 28 nC Q_rr, and 3.2 V/ns peak dv/dt immunity at T_J = 175 °C - critical for synchronous rectification and bidirectional energy transfer in DC-DC converters.

Key Specifications

Parameter	Value and Actual Design Meaning
V_BRDSS	40 V - Ensures safe operation in 12 V and 24 V automotive battery systems with transient overvoltage margin.
R_DS(on) typ.	3.2 mΩ @ V_GS = 10 V, I_D = 60 A - Delivers ≤ 11.5 W conduction loss at 60 A, enabling high-efficiency battery switching.
I_D (Silicon Limited)	100 A @ T_C = 25 °C - Supports high-pulse load handling in EPS motor drivers without silicon thermal runaway.
E_AS (Tested)	94 mJ - Validates robustness against unclamped inductive switching events in start-stop micro-hybrid solenoid control.
Q_g total	42 nC - Enables fast turn-on with <7.9 ns delay and 34 ns rise time using standard 2.7 Ω gate driver impedance.
T_J max	175 °C - Meets AEC-Q101 requirements for under-hood placement in engine bay and transmission control modules.
C_iss	2200 pF - Determines gate drive power requirement and influences EMI behavior in high-frequency PWM applications.

Pinout & Package

D-Pak (TO-252) package with exposed drain pad for thermal enhancement and mechanical stability on PCB. Standard 3-pin configuration: Gate (G), Drain (D), Source (S).

Pin/Terminal	Circuit Role	Design Meaning
G	Gate control terminal	Accepts 10 V logic-level drive; internal R_G = 2.0 Ω limits ringing and simplifies gate resistor selection.
D	Drain connection / heat sink interface	Exposed copper pad soldered to large PCB copper area; carries full load current and dissipates heat via R_θJC = 1.9 °C/W path.
S	Source return path / reference node	Common source for gate drive loop; low-inductance layout essential to maintain dv/dt immunity during switching.

Key Features

Feature	Design Value
Automotive qualification	AEC-Q101 qualified for engine control, EPS, and battery management systems requiring zero defect reliability.
Repetitive avalanche rating	Rated for unlimited repetitive unclamped inductive switching up to T_Jmax, eliminating need for external snubbers in solenoid drivers.
Ultra-low R_DS(on)	3.2 mΩ typ. reduces conduction losses by >35% vs. legacy 40 V MOSFETs, directly improving system efficiency in 100 A battery switches.
Fast body diode recovery	28 ns t_rr and 3.2 V/ns dv/dt rating enable clean commutation in synchronous buck stages of 48 V–12 V DC-DC converters.
Lead-free & RoHS compliant	Meets automotive ELV Directive and IPC-J-STD-020 moisture sensitivity level 1 (MSL1) for reflow compatibility.

Applications

Electric Power Steering (EPS)

Battery Disconnect Switch

Use Scenario: High-current H-bridge motor driver controlling 12 V or 48 V assist motors in passenger vehicle steering columns.

IC Role / Device Role / Timing Role: Main low-side switching element delivering up to 100 A pulsed current with <34 ns rise time and minimal shoot-through risk.

Use Value: 3.2 mΩ R_DS(on) cuts I²R losses by 40% vs. prior generation, reducing heatsink size and enabling compact column-integrated EPS modules.

Use Scenario: Isolation switch between vehicle battery and high-power loads (e.g., HVAC compressor, PTC heater) during key-off or fault conditions.

IC Role / Device Role / Timing Role: Single-pole, high-reliability power FET operating in static on/off mode with 175 °C ambient tolerance.

Use Value: AEC-Q101 qualification and 94 mJ tested avalanche energy ensure fail-safe disconnection even during load dump transients.

Start/Stop Micro Hybrid

DC-DC Converter Primary Switch

Use Scenario: Engine restart actuation using starter motor controlled by intelligent power module in 12 V mild hybrid architectures.

IC Role / Device Role / Timing Role: High-pulse-current switch handling 400 A IDM pulses during cranking, leveraging repetitive avalanche capability.

Use Value: 400 A pulsed drain rating and 1.9 °C/W R_θJC allow direct mounting to aluminum chassis, eliminating discrete heatsinks.

Use Scenario: Primary-side synchronous rectifier or high-side switch in bidirectional 48 V–12 V DC-DC converters for dual-battery vehicles.

IC Role / Device Role / Timing Role: Fast-switching power stage with 42 nC Q_g and 2200 pF C_iss, optimized for 200–500 kHz PWM operation.

Use Value: Low Q_gd/Q_g ratio (14/42) improves hard-switching efficiency and reduces voltage overshoot during turn-off.

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel 40 V power MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STL220N4F7AG	40 V, 2.2 mΩ R_DS(on), 200 A I_D, H2PAK-2 package, higher Q_g (72 nC)	Higher current capacity but larger footprint and slower switching due to higher gate charge	Prefer when board space allows and peak current exceeds 100 A; avoid if gate drive strength is limited.
IRF1404ZLPbF	40 V, 4.7 mΩ R_DS(on), 130 A I_D, TO-220AB, no AEC-Q101 qualification	Lacks automotive qualification and has 47% higher conduction loss at 60 A	Acceptable only for non-automotive industrial use where qualification is not required and thermal margin exists.

Compared with STL220N4F7AG and IRF1404ZLPbF, AUIRFR8401TRL delivers optimal balance of automotive compliance, 3.2 mΩ conduction loss, and 42 nC gate drive demand - making it the preferred choice for space-constrained, thermally demanding EPS and battery switch designs.

Availability

AUIRFR8401TRL is available at Aetrix Electronics and suitable for Electric Power Steering (EPS), Battery Disconnect Switch, and Start/Stop Micro Hybrid applications requiring stable component supply across automotive production lifecycles.

Supply support for AUIRFR8401TRL 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 quality certification to ISO/TS 16949.

AUIRFR8401TRL belongs to the HEXFET® Automotive Power MOSFET product line, engineered specifically for high-reliability, high-current switching in engine bay and chassis-mounted automotive subsystems.

FAQ

What is the maximum continuous drain current for AUIRFR8401TRL at 100 °C case temperature?

The maximum continuous drain current is 71 A at T_C = 100 °C and V_GS = 10 V, determined by silicon thermal limits rather than package constraints. This value reflects derating from the 100 A rating at 25 °C case temperature, following the linear derating factor of 0.53 W/°C and R_θJC = 1.9 °C/W thermal resistance.

Does AUIRFR8401TRL support gate drive from a 5 V microcontroller?

No - AUIRFR8401TRL requires V_GS ≥ 10 V for full enhancement and 3.2 mΩ R_DS(on); its gate threshold voltage ranges from 2.2 V to 3.9 V, but conduction resistance rises sharply below 8 V. A dedicated 10–12 V gate driver or level-shifting circuit is required to ensure reliable switching and minimize power loss.

How is the avalanche energy rating validated for AUIRFR8401TRL?

AUIRFR8401TRL's 94 mJ single-pulse avalanche energy (E_AS) is measured per JEDEC JESD24-11, using L = 0.037 mH, R_G = 25 Ω, I_AS = 60 A, V_GS = 10 V, and starting T_J = 25 °C. The test verifies thermal survivability without bond wire failure or parametric shift, supporting unclamped inductive switching in solenoid and motor control.

Can AUIRFR8401TRL be used in parallel configurations?

Yes - its positive R_DS(on) temperature coefficient (0.035 V/°C for V_BRDSS, correlated with on-resistance drift) ensures inherent current sharing stability. Parallel operation requires matched gate drive paths, symmetrical PCB layout, and individual gate resistors to suppress oscillation; typical designs use 2–4 devices for >200 A systems.

AUIRFR8401TRL Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: HEXFET®

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

Packaging:: Tape & Reel (TR)

Product Status:: Last Time Buy

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 40 V

Current - Continuous Drain (Id) @ 25°C:: 100A (Tc)

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

Rds On (Max) @ Id, Vgs:: 4.25mOhm @ 60A, 10V

Vgs(th) (Max) @ Id:: 3.9V @ 50µA

Gate Charge (Qg) (Max) @ Vgs:: 63 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 2200 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 79W (Tc)

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

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

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

AUIRFR8401TRL FAQ

1.How can I place an order for AUIRFR8401TRL through Aetrix?

Please submit a Request for Quotation (RFQ) for AUIRFR8401TRL 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 AUIRFR8401TRL reliable?

The price and inventory of AUIRFR8401TRL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AUIRFR8401TRL is usually 5 days.

3.What payment methods are accepted for AUIRFR8401TRL?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AUIRFR8401TRL transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AUIRFR8401TRL?

AUIRFR8401TRL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AUIRFR8401TRL 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 AUIRFR8401TRL?

For technical support, including AUIRFR8401TRL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AUIRFR8401TRL requirements.

6.How does Aetrix verify that AUIRFR8401TRL is sourced from the original manufacturer or authorized distributors?

All AUIRFR8401TRL 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 AUIRFR8401TRL meets industry standards.

7.What is the process for return or replacement of AUIRFR8401TRL?

All AUIRFR8401TRL units undergo pre-shipment inspection (PSI). If there is an issue with AUIRFR8401TRL, 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 AUIRFR8401TRL part is unused and in its original packaging.

Return procedure for AUIRFR8401TRL:

1.Submit a request within 90 days.

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

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