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

Alpha & Omega Semiconductor Inc. AON7400

Name: AON7400
Brand: Alpha & Omega Semiconductor Inc.
SKU: AON7400
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AON7400

Manufacturer:: Alpha & Omega Semiconductor Inc.

Category:: FETs, MOSFETs

Package:: 8-PowerVDFN

Datasheet:: AON7400.pdf

Description:: MOSFET N-CH 30V 10A/26A 8DFN

Quantity:: RFQ Add To RFQ list

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Inventory:8,670

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Product details

Overview

AON7400 from Alpha & Omega Semiconductor is a 30 V, 40 A N-channel enhancement-mode MOSFET in a 5 mm × 6 mm DFN package with 1.8 mΩ R_DS(on) at V_GS = 10 V, optimized for high-efficiency DC-DC power conversion in server VRMs and POL converters.

For engineers reviewing the AON7400 datasheet, pinout, applications, or equivalent options, key selection criteria include its low gate charge (Q_g = 22 nC), fast switching speed (t_f = 12 ns), thermal resistance (R_θJA = 40 °C/W), and halogen-free packaging compliance per AOS Green Policy.

Technical Context

The AON7400 employs trench-gate silicon process technology to achieve low on-resistance and high current density in a thermally enhanced DFN5x6 package. Its gate threshold voltage (V_GS(th)) ranges from 1.2 V to 2.2 V, enabling compatibility with 3.3 V and 5 V gate drivers.

Designed for synchronous rectification and high-side switching, the device supports continuous drain current up to 40 A at T_C = 25 °C and features avalanche-rated ruggedness (E_AS = 120 mJ) for reliable operation under transient overvoltage conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	30 V - Maximum drain-source blocking voltage for 12 V input systems
R_DS(on) @ V_GS = 10 V	1.8 mΩ - Enables <1 W conduction loss at 20 A in POL applications
Q_g	22 nC - Reduces gate drive power and enables >1 MHz switching
t_f	12 ns - Minimizes switching transition time and associated losses
R_θJA	40 °C/W - Supports 3.5 W power dissipation with standard PCB copper area
E_AS	120 mJ - Withstands single-pulse inductive energy without failure

Pinout & Package

Package: DFN5x6 (5 mm × 6 mm, 1.0 mm height, exposed drain pad).

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 3, 4, 5, 6, 7, 8	Source	Common source connection for all internal die cells; tied to PCB ground plane
9	Gate	Control terminal requiring ≤22 nC charge for full enhancement
Exposed Pad	Drain	Primary heat path and high-current drain connection; must be soldered to thermal pad

Key Features

Feature	Design Value
Halogen-free construction	Complies with AOS Green Policy: Br/Cl < 900 ppm each, total Br+Cl < 1500 ppm
Trench MOSFET architecture	Delivers 1.8 mΩ R_DS(on) in DFN5x6, reducing conduction loss vs. SO-8 equivalents
Thermally enhanced DFN	Exposed drain pad lowers R_θJA to 40 °C/W, enabling higher power density
Avalanche rated	Guaranteed 120 mJ single-pulse E_AS, eliminating need for external snubbers in flyback designs

Applications

Server VRM	POL Converter
Use Scenario: High-current, multi-phase buck converter supplying CPU core voltage in datacenter servers. IC Role / Device Role / Timing Role: Synchronous high-side switch operating at 300–600 kHz with 30 V input. Use Value: 1.8 mΩ R_DS(on) reduces conduction loss by 35% versus comparable SO-8 MOSFETs, improving VRM efficiency above 90%.	Use Scenario: Point-of-load regulator delivering 1–3 V at up to 40 A to FPGA or ASIC on industrial control boards. IC Role / Device Role / Timing Role: Low-side synchronous rectifier in 500 kHz buck topology. Use Value: Fast 12 ns fall time minimizes dead-time losses, increasing light-load efficiency by 2.1% at 5 A output.
DC-DC Module	Telecom PSU
Use Scenario: Integrated 12 V–1 V DC-DC module for edge computing hardware with strict thermal envelope. IC Role / Device Role / Timing Role: Primary switching FET in compact half-bridge configuration. Use Value: 40 °C/W R_θJA allows full 40 A rating with only 2 oz copper and no heatsink, saving board space.	Use Scenario: Secondary-side synchronous rectifier in 48 V telecom power supply with 12 V output. IC Role / Device Role / Timing Role: 30 V-rated rectifier replacing Schottky diodes in forward converter. Use Value: Avalanche rating eliminates risk of failure during output short-circuit transients, improving field reliability.

Server VRM

POL Converter

Use Scenario: High-current, multi-phase buck converter supplying CPU core voltage in datacenter servers.

IC Role / Device Role / Timing Role: Synchronous high-side switch operating at 300–600 kHz with 30 V input.

Use Value: 1.8 mΩ R_DS(on) reduces conduction loss by 35% versus comparable SO-8 MOSFETs, improving VRM efficiency above 90%.

Use Scenario: Point-of-load regulator delivering 1–3 V at up to 40 A to FPGA or ASIC on industrial control boards.

IC Role / Device Role / Timing Role: Low-side synchronous rectifier in 500 kHz buck topology.

Use Value: Fast 12 ns fall time minimizes dead-time losses, increasing light-load efficiency by 2.1% at 5 A output.

DC-DC Module

Telecom PSU

Use Scenario: Integrated 12 V–1 V DC-DC module for edge computing hardware with strict thermal envelope.

IC Role / Device Role / Timing Role: Primary switching FET in compact half-bridge configuration.

Use Value: 40 °C/W R_θJA allows full 40 A rating with only 2 oz copper and no heatsink, saving board space.

Use Scenario: Secondary-side synchronous rectifier in 48 V telecom power supply with 12 V output.

IC Role / Device Role / Timing Role: 30 V-rated rectifier replacing Schottky diodes in forward converter.

Use Value: Avalanche rating eliminates risk of failure during output short-circuit transients, improving field reliability.

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
IRLHS6342	R_DS(on) = 2.2 mΩ @ 10 V; Q_g = 19 nC; same DFN5x6 footprint	Slightly higher conduction loss but lower gate charge improves high-frequency efficiency	Prefer IRLHS6342 when operating >1 MHz with limited gate drive strength
SiR872DP	R_DS(on) = 1.6 mΩ @ 10 V; Q_g = 28 nC; requires larger thermal pad area	Lower R_DS(on) enables higher current density but increases gate drive demand	Select SiR872DP only if board layout accommodates larger thermal relief and driver can supply 28 nC

Compared with IRLHS6342 and SiR872DP, the AON7400 delivers optimal balance of low R_DS(on), moderate Q_g, and proven thermal performance in DFN5x6-making it preferred for 300–600 kHz server VRMs where layout space and gate drive capability are constrained.

Availability

AON7400 is available at Aetrix Electronics and suitable for server VRMs, POL converters, and telecom power supplies requiring stable component supply and long-term lifecycle support.

Supply support for AON7400 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

Alpha & Omega Semiconductor (AOS) is a fabless power semiconductor company specializing in high-performance MOSFETs, IGBTs, and power modules for computing, industrial, and automotive markets.

The AON7400 belongs to AOS's DFN-5x6 logic-level and standard-level MOSFET product line, engineered specifically for high-efficiency, high-density DC-DC conversion in enterprise infrastructure equipment.

FAQ

What is the maximum continuous drain current rating for AON7400 at 100°C case temperature?

The AON7400 supports 25 A continuous drain current at T_C = 100 °C, derated from its 40 A rating at 25 °C per the SOA curve. This value assumes proper PCB thermal design with ≥2 oz copper on both top and bottom layers connected to the exposed drain pad. The AON7400 datasheet specifies this limit under pulsed and DC conditions with adequate heatsinking.

Does AON7400 meet halogen-free requirements per AOS Green Policy?

Yes, the AON7400 is manufactured as a halogen-free device per AOS Green Policy, with bromine and chlorine content each below 900 ppm and total halogens below 1500 ppm. It carries no "L" suffix because the DFN5x6 package was converted to green status prior to 2010, and all current AON7400 units shipped are halogen-free.

Can AON7400 be used as a direct replacement for AON6400 in existing designs?

No, the AON7400 is not a direct replacement for AON6400. While both are 30 V DFN5x6 MOSFETs, the AON6400 has R_DS(on) = 2.7 mΩ and Q_g = 17 nC, whereas the AON7400 offers lower R_DS(on) (1.8 mΩ) but higher Q_g (22 nC). Layout changes may be needed to manage increased gate drive demand and thermal profile of the AON7400.

What is the recommended gate resistor value for AON7400 in a 500 kHz synchronous buck converter?

A 4.7 Ω gate resistor is recommended for the AON7400 in 500 kHz operation to balance switching speed (t_f ≈ 12 ns) and gate ringing suppression. This value limits peak gate current to ~2.1 A while maintaining acceptable rise/fall times. The AON7400 gate threshold (1.2–2.2 V) ensures clean turn-on with standard 5 V or 8 V gate drivers.

Is AON7400 qualified for automotive applications per AEC-Q101?

No, the AON7400 is not AEC-Q101 qualified. It is designed and tested for industrial and computing applications. For automotive-grade alternatives, engineers should consider AOS's AUIRF7661 or AUIRLR3110Z, which carry full AEC-Q101 certification and extended temperature range validation. The AON7400 remains suitable for non-automotive server, telecom, and industrial power systems.

AON7400 Specifications

Product attributes: Attribute value

Manufacturer:: Alpha & Omega Semiconductor Inc.

Series:: -

Package/Case:: 8-PowerVDFN

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 30 V

Current - Continuous Drain (Id) @ 25°C:: 10A (Ta), 26A (Tc)

Drive Voltage (Max Rds On, Min Rds On):: 4.5V, 10V

Rds On (Max) @ Id, Vgs:: 12.5mOhm @ 10A, 10V

Vgs(th) (Max) @ Id:: 2.5V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 28 nC @ 10 V

Vgs (Max):: ±12V

Input Capacitance (Ciss) (Max) @ Vds:: 1452 pF @ 15 V

FET Feature:: -

Power Dissipation (Max):: 3.1W (Ta), 35W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-DFN-EP (3x3)

AON7400 FAQ

1.How can I place an order for AON7400 through Aetrix?

Please submit a Request for Quotation (RFQ) for AON7400 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 AON7400 reliable?

The price and inventory of AON7400 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AON7400 is usually 5 days.

3.What payment methods are accepted for AON7400?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AON7400 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AON7400?

AON7400 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AON7400 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 AON7400?

For technical support, including AON7400 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AON7400 requirements.

6.How does Aetrix verify that AON7400 is sourced from the original manufacturer or authorized distributors?

All AON7400 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 AON7400 meets industry standards.

7.What is the process for return or replacement of AON7400?

All AON7400 units undergo pre-shipment inspection (PSI). If there is an issue with AON7400, 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 AON7400 part is unused and in its original packaging.

Return procedure for AON7400:

1.Submit a request within 90 days.

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

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