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

Infineon Technologies AUIRF2804S

Name: AUIRF2804S
Brand: Infineon Technologies
SKU: AUIRF2804S
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AUIRF2804S

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

Package:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Datasheet:: AUIRF2804S.pdf

Description:: MOSFET N-CH 40V 195A D2PAK

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Product details

Overview

AUIRF2804S from Infineon is an automotive-grade N-channel D2PAK (TO-263) HEXFET® Power MOSFET designed for high-current DC-DC conversion, motor drive, and battery protection circuits. It delivers 40 V V_DS, 1.5 mΩ typ. R_DS(on) at 10 V_GS, 195 A package-limited continuous drain current, and 175°C maximum junction temperature - enabling robust operation in engine control units and 12 V/48 V hybrid power systems.

For engineers reviewing the AUIRF2804S datasheet, AUIRF2804S pinout, AUIRF2804S application, or AUIRF2804S equivalent, key selection criteria include its ultra-low on-resistance, repetitive avalanche capability up to T_jmax, fast switching (t_r = 120 ns), and automotive qualification per AEC-Q101 - critical for high-reliability power stage design.

Technical Context

This MOSFET employs advanced silicon processing to minimize conduction losses while maintaining thermal stability under pulsed load conditions. Its 175°C rated junction temperature and 0.50 °C/W R_θJC support high-power density mounting on thermally optimized PCBs or heatsinks.

The device features a fully characterized body diode with t_rr = 56–84 ns and Q_rr = 67–100 nC, enabling efficient synchronous rectification and hard-switched flyback topologies. Gate charge parameters (Q_g = 160–240 nC, Q_gd = 66–99 nC) are optimized for gate driver compatibility in 10–20 V logic-level systems.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	40 V - Maximum blocking voltage compatible with 12 V/48 V automotive bus systems without derating.
R_DS(on) max	2.0 mΩ @ 10 V_{GS, 75 A - Enables <1.5 W conduction loss at 195 A continuous, reducing thermal footprint.}
I_D (pkg-lim)	195 A @ T_C = 25°C - Package-limited current defines safe PCB trace and heatsink interface design.
E_AS tested	1160 mJ - Validated single-pulse avalanche energy supports unclamped inductive switching in motor drives.
t_r/t_f	120 ns / 130 ns - Fast edge rates reduce switching losses in 100–500 kHz SMPS applications.
Q_g	160–240 nC - Determines gate driver peak current requirement (~2–3 A for 100 ns turn-on).
T_J max	+175°C - Allows operation in under-hood environments without active cooling.

Pinout & Package

AUIRF2804S uses the D2PAK (TO-263) surface-mount package with exposed drain pad for thermal and electrical performance. The three-terminal configuration supports high-current PCB routing and low-inductance layout.

Pin/Terminal	Circuit Role	Design Meaning
Drain (D)	Main current path collector	Internally connected to exposed metal tab - must be soldered to large copper pour for thermal dissipation and low-inductance return path.
Source (S)	Current return reference node	Low-impedance source connection; used as ground reference for gate drive and current sensing in high-side configurations.
Gate (G)	Control terminal	High-impedance input requiring <240 nC charge; sensitive to ESD - requires gate resistor (2.5 Ω typical) and clamping diode.

Key Features

Feature	Design Value
Ultra-low R_DS(on)	1.5 mΩ typ. - Reduces I²R losses by >40% vs. legacy 40 V MOSFETs, enabling smaller heatsinks in 100–200 A systems.
Repetitive avalanche rating	Rated up to T_jmax - Permits reliable operation during short-circuit events in motor phase-legs without external snubbers.
175°C junction rating	Extended thermal margin - Supports sustained operation in engine bay ambient up to 125°C with 50°C safety margin.
Automotive qualification	AEC-Q101 compliant - Validated for vibration, temperature cycling, and humidity exposure per automotive reliability standards.
Lead-free & RoHS	Halogen-free, Pb-free terminations - Meets EU ELV and China RoHS requirements for vehicle production.

Applications

Engine Control Unit (ECU) Power Stage

48 V Mild Hybrid Battery Disconnect

Use Scenario: High-side switch controlling fuel injector or ignition coil supply in gasoline/diesel ECUs.

IC Role / Device Role / Timing Role: Power switch handling 10–30 A pulsed loads at 10–20 kHz PWM frequency with <1 µs dead-time tolerance.

Use Value: 1.5 mΩ R_DS(on) limits voltage drop to <45 mV at 30 A, preserving timing accuracy and reducing thermal stress on adjacent MCU.

Use Scenario: Bidirectional isolation switch between 48 V battery and DC-DC converter in P0/P1 mild hybrid architectures.

IC Role / Device Role / Timing Role: Low-loss, avalanche-rated disconnect MOSFET enabling fail-safe open-circuit protection during fault conditions.

Use Value: 1160 mJ tested E_AS ensures survival during 48 V bus short-circuit transients without crowbar circuitry.

Electric Power Steering (EPS) Motor Driver

Onboard Charger (OBC) Primary Switch

Use Scenario: Half-bridge high-side switch in 3-phase inverter driving 1–3 kW EPS brushless motor.

IC Role / Device Role / Timing Role: High-current, fast-switching power transistor operating at 20–40 kHz with tight gate timing control.

Use Value: 120 ns rise time and 240 nC Q_g enable precise PWM edge placement and <1% dead-time loss in torque-critical steering control.

Use Scenario: Primary-side switch in LLC resonant converter of 3.3–6.6 kW EV onboard charger.

IC Role / Device Role / Timing Role: High-efficiency, thermally robust switching element handling 100+ A peak currents with minimal conduction loss.

Use Value: 0.50 °C/W R_θJC and 195 A package limit allow direct heatsink mounting, eliminating thermal interface layers and improving long-term reliability.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-current 40 V power switching applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STL220N4F7AG	R_DS(on) = 1.45 mΩ typ., Q_g = 220 nC, same D2PAK package	Higher gate charge increases driver complexity; slightly lower thermal resistance (0.45 °C/W)	Preferred where gate drive voltage is stable at 12–15 V and thermal interface is constrained.
IRFS7537PBF	R_DS(on) = 1.75 mΩ typ., E_AS = 920 mJ, TO-220 package	Lower avalanche rating and through-hole mounting limit high-frequency layout density	Suitable for cost-sensitive industrial SMPS where automotive qualification is not required.

Compared with STL220N4F7AG and IRFS7537PBF, AUIRF2804S offers the highest validated avalanche energy (1160 mJ) and AEC-Q101 certification - making it the only choice for safety-critical automotive power stages requiring both robustness and regulatory compliance.

Availability

AUIRF2804S is available at Aetrix Electronics and suitable for engine control units, 48 V battery management systems, electric power steering inverters, and onboard chargers requiring stable component supply across multi-year automotive production cycles.

Supply support for AUIRF2804S 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.

AUIRF2804S 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 AUIRF2804S at 100°C case temperature?

The AUIRF2804S supports 190 A continuous drain current at T_C = 100°C (silicon-limited), per the Absolute Maximum Ratings table. This value reflects thermal derating due to reduced channel mobility and increased R_DS(on) at elevated temperatures, and assumes proper PCB copper area and heatsinking per AN-994 guidelines.

Does AUIRF2804S require a gate resistor, and what value is recommended?

Yes - a gate resistor is required to control dV/dt and prevent oscillation. A 2.5 Ω resistor is specified in the datasheet for switching characterization (Fig. 13a). For production designs, values between 2.2 Ω and 4.7 Ω balance switching speed, EMI, and gate driver stress, depending on layout parasitics and driver capability.

Can AUIRF2804S be used in synchronous rectification applications?

Yes - its body diode has t_rr = 56–84 ns and Q_rr = 67–100 nC at 75 A, enabling use in synchronous buck or LLC converters. However, external Schottky diodes may still be preferred in <100 kHz designs where reverse recovery noise must be minimized, due to the MOSFET's inherent p-n junction characteristics.

Is the AUIRF2804S pinout compatible with standard D2PAK footprints?

Yes - AUIRF2804S uses the industry-standard D2PAK (TO-263) outline with 3-pin configuration (G-D-S) and 2.54 mm lead pitch. Its mechanical dimensions and thermal pad layout match IPC-7351B SO-263-3 recommendations, ensuring drop-in compatibility with existing D2PAK land patterns and reflow profiles.

AUIRF2804S Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: HEXFET®

Package/Case:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

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:: 195A (Tc)

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

Rds On (Max) @ Id, Vgs:: 2mOhm @ 75A, 10V

Vgs(th) (Max) @ Id:: 4V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 240 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 6450 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 300W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: D2PAK

AUIRF2804S FAQ

1.How can I place an order for AUIRF2804S through Aetrix?

Please submit a Request for Quotation (RFQ) for AUIRF2804S 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 AUIRF2804S reliable?

The price and inventory of AUIRF2804S are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AUIRF2804S is usually 5 days.

3.What payment methods are accepted for AUIRF2804S?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AUIRF2804S transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AUIRF2804S?

AUIRF2804S orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AUIRF2804S 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 AUIRF2804S?

For technical support, including AUIRF2804S datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AUIRF2804S requirements.

6.How does Aetrix verify that AUIRF2804S is sourced from the original manufacturer or authorized distributors?

All AUIRF2804S 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 AUIRF2804S meets industry standards.

7.What is the process for return or replacement of AUIRF2804S?

All AUIRF2804S units undergo pre-shipment inspection (PSI). If there is an issue with AUIRF2804S, 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 AUIRF2804S part is unused and in its original packaging.

Return procedure for AUIRF2804S:

1.Submit a request within 90 days.

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

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