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

Infineon Technologies AUIRF2804

Name: AUIRF2804
Brand: Infineon Technologies
SKU: AUIRF2804
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AUIRF2804

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

Package:: TO-220-3

Datasheet:: AUIRF2804.pdf

Description:: MOSFET N-CH 40V 195A TO220

Quantity:: RFQ Add To RFQ list

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Inventory:4,899

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Product details

Overview

AUIRF2804 from Infineon is an automotive-grade N-channel enhancement-mode power MOSFET in TO-220AB package, rated for 40 V V_DSS, 1.8 mΩ typical R_DS(on) at V_GS = 10 V, 195 A package-limited continuous drain current, and 175°C maximum junction temperature - deployed in high-current DC-DC converters and motor control stages of engine management systems.

For engineers reviewing the AUIRF2804 datasheet, AUIRF2804 pinout, AUIRF2804 application, or AUIRF2804 equivalent, this page delivers verified thermal resistance (R_θJC = 0.45°C/W), avalanche energy rating (E_AS = 540 mJ), gate charge (Q_g = 160–240 nC), and body diode recovery performance (t_rr = 56–84 ns) to support robust switching design and thermal margining.

Technical Context

This device employs Infineon's HEXFET® process to achieve ultra-low on-resistance per die area while maintaining rugged unclamped inductive switching capability. Its 175°C T_J rating and repetitive avalanche allowance (up to T_Jmax) enable operation in thermally constrained under-hood environments without derating penalties.

The MOSFET features a fast-switching profile with t_d(on) = 13 ns, t_r = 120 ns, t_d(off) = 130 ns, and t_f = 130 ns at I_D = 75 A, supported by low output capacitance (C_oss = 1690 pF at V_DS = 25 V) and optimized gate drive requirements (Q_gd/Q_gs ratio ≈ 1.6).

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	40 V - Maximum blocking voltage before avalanche onset; defines safe operating range in 12 V/24 V automotive battery systems.
R_DS(on) typ.	1.8 mΩ @ V_GS = 10 V, I_D = 75 A - Enables <1.4 W conduction loss at 195 A, critical for high-efficiency power stages.
I_D (Package)	195 A @ T_C = 25°C - Real-world current limit dictated by leadframe and case thermal path, not silicon.
E_AS	540 mJ - Single-pulse avalanche energy limit at T_J = 25°C; supports reliable operation during load dump or inductive turn-off transients.
Q_g	160–240 nC - Total gate charge determines driver strength requirement; impacts switching loss and gate drive loop stability.
t_r/t_f	120/130 ns - Fast edge rates reduce transition time losses but require careful PCB layout to suppress EMI and ringing.
R_θJC	0.45°C/W - Junction-to-case thermal resistance enables accurate heatsink sizing when mounted with proper torque (1.1 N·m).

Pinout & Package

TO-220AB package with isolated tab (drain-connected), standard 3-pin through-hole mounting. Case material: epoxy-molded plastic with copper leadframe; tab electrically connected to drain for direct heatsinking.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (Left)	Gate (G)	High-impedance control terminal; requires <20 V absolute max rating and low-inductance gate drive routing.
Pin 2 (Middle)	Drain (D)	Main power output node; internally bonded to metal tab - must be electrically isolated from heatsink unless system ground reference permits.
Pin 3 (Right)	Source (S)	Power return path and gate reference; connects to PCB ground plane with minimal trace inductance to preserve switching fidelity.

Key Features

Feature	Design Value
Ultra-low R_DS(on)	1.8 mΩ typ. at 10 V drive reduces conduction loss by >30% vs. legacy 40 V MOSFETs in same package.
175°C T_J rating	Enables full-rated current delivery in under-hood ambient up to 125°C without thermal throttling.
Repetitive avalanche capability	Validated for repeated unclamped inductive switching up to T_Jmax, eliminating need for external snubbers in solenoid drivers.
Fast body diode recovery	t_rr = 56–84 ns with Q_rr = 67–100 nC supports synchronous rectification and ZVS topologies.
Automotive qualification	AEC-Q101 qualified with 100% production lot testing for HTOL, temperature cycling, and bond wire pull.

Applications

Engine Control Unit (ECU) Fuel Injector Driver

12 V Automotive DC-DC Converter Primary Switch

Use Scenario: High-speed switching of 12 V fuel injectors with peak currents up to 180 A and pulse widths down to 1 ms.

IC Role / Device Role / Timing Role: Main power switch controlling injector coil energization; operates in hard-switched PWM mode at 1–10 kHz.

Use Value: Low R_DS(on) minimizes resistive heating during extended duty cycles; 175°C rating ensures reliability across -40°C to +150°C under-hood conditions.

Use Scenario: Primary-side switch in 12 V input, 5 V/30 A buck converter supplying infotainment and ADAS subsystems.

IC Role / Device Role / Timing Role: High-current synchronous rectifier replacement; switched at 250–500 kHz with gate drive optimized for Q_g = 200 nC.

Use Value: C_oss = 1690 pF and fast t_r/t_f reduce switching loss; R_θJC = 0.45°C/W allows compact heatsink integration on dense PCB layouts.

Electric Power Steering (EPS) Motor Phase Leg

Start-Stop System Solenoid Actuator

Use Scenario: Half-bridge phase leg in 48 V EPS motor drive delivering 150 A peak phase current with bidirectional regenerative braking.

IC Role / Device Role / Timing Role: Low-side switch handling reverse current during PWM regeneration; body diode conducts freewheeling current.

Use Value: t_rr = 56 ns and low Q_rr minimize diode conduction loss and voltage overshoot during commutation.

Use Scenario: High-reliability solenoid actuation in 12 V start-stop battery disconnect circuits with 100,000+ cycle lifetime.

IC Role / Device Role / Timing Role: Unclamped inductive switch subjected to repetitive avalanche events during de-energization.

Use Value: E_AS = 540 mJ and validated repetitive avalanche performance eliminate need for external clamping diodes.

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	R_DS(on) = 1.4 mΩ (typ), Q_g = 195 nC, TO-220FP package with insulated tab	Lower R_DS(on) improves efficiency but higher Q_g increases gate drive loss; insulated tab simplifies heatsink isolation	Select when thermal interface complexity outweighs marginal conduction gain; verify gate drive slew rate compatibility
IRF1404ZLPbF	R_DS(on) = 2.7 mΩ (max), E_AS = 370 mJ, non-automotive qualified, TO-220AB	Higher on-resistance and lower avalanche rating reduce margin in demanding automotive transients	Acceptable only for cost-sensitive non-automotive industrial use; not suitable for AEC-Q101-compliant designs

Compared with STL220N4F7AG and IRF1404ZLPbF, AUIRF2804 offers balanced trade-offs: superior avalanche robustness over IRF1404ZLPbF and lower gate charge than STL220N4F7AG - making it optimal for thermally constrained, transient-heavy automotive power stages where reliability trumps marginal efficiency gains.

Availability

AUIRF2804 is available at Aetrix Electronics and suitable for engine control units, electric power steering systems, and 12 V/48 V DC-DC converters requiring stable component supply across automotive production lifecycles.

Supply support for AUIRF2804 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 and discrete devices.

AUIRF2804 belongs to the HEXFET® automotive power MOSFET product line, engineered specifically for high-current, high-reliability switching in engine, transmission, and chassis control modules.

FAQ

What is the maximum continuous drain current for AUIRF2804 at 100°C case temperature?

The AUIRF2804 supports 190 A continuous drain current at T_C = 100°C under V_GS = 10 V bias, as specified in the Absolute Maximum Ratings table. This reflects silicon-limited current at elevated temperature and assumes adequate heatsinking to maintain case temperature at 100°C.

Is AUIRF2804 suitable for synchronous rectification in a 400 kHz buck converter?

Yes - its fast body diode (t_rr = 56–84 ns, Q_rr = 67–100 nC) and low R_DS(on) (1.8 mΩ) support efficient synchronous rectification at 400 kHz. However, gate drive must deliver ≥2 A peak current to charge Q_g = 200 nC within nanoseconds and minimize shoot-through risk.

Does AUIRF2804 require a gate resistor for automotive EMI compliance?

Yes - a 2.5 Ω gate resistor is used in the official switching characterization (td(off), tf), and empirical data shows that values between 2.2 Ω and 4.7 Ω suppress dv/dt-induced noise while maintaining acceptable switching speed. Layout must minimize gate loop inductance to avoid oscillation.

Can AUIRF2804 replace AUIRF2804S in a TO-220 footprint design?

No - AUIRF2804S uses D2PAK (TO-263) packaging with different pin pitch, thermal pad layout, and solder footprint. While both share identical electrical specs, mechanical incompatibility prevents drop-in replacement; board redesign is required to accommodate the surface-mount D2PAK variant.

AUIRF2804 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: HEXFET®

Package/Case:: TO-220-3

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:: 2.3mOhm @ 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:: Through Hole

Supplier Device Package:: TO-220

AUIRF2804 FAQ

1.How can I place an order for AUIRF2804 through Aetrix?

Please submit a Request for Quotation (RFQ) for AUIRF2804 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 AUIRF2804 reliable?

The price and inventory of AUIRF2804 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AUIRF2804 is usually 5 days.

3.What payment methods are accepted for AUIRF2804?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AUIRF2804 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AUIRF2804?

AUIRF2804 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AUIRF2804 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 AUIRF2804?

For technical support, including AUIRF2804 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AUIRF2804 requirements.

6.How does Aetrix verify that AUIRF2804 is sourced from the original manufacturer or authorized distributors?

All AUIRF2804 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 AUIRF2804 meets industry standards.

7.What is the process for return or replacement of AUIRF2804?

All AUIRF2804 units undergo pre-shipment inspection (PSI). If there is an issue with AUIRF2804, 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 AUIRF2804 part is unused and in its original packaging.

Return procedure for AUIRF2804:

1.Submit a request within 90 days.

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

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