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

Alpha & Omega Semiconductor Inc. AON7290

Name: AON7290
Brand: Alpha & Omega Semiconductor Inc.
SKU: AON7290
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AON7290

Manufacturer:: Alpha & Omega Semiconductor Inc.

Category:: FETs, MOSFETs

Package:: 8-PowerWDFN

Datasheet:: AON7290.pdf

Description:: MOSFET N CH 100V 15A 8DFN

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AON7290 from Alpha & Omega Semiconductor is a 30 V, 42 A, 3.5 mΩ N-channel MOSFET in a 5 mm × 6 mm DFN package with exposed drain pad, designed for high-efficiency DC-DC power conversion and load switching in server VRMs and POL converters.

For engineers reviewing the AON7290 datasheet, pinout, applications, or equivalent options, key selection criteria include R_DS(on) at 10 V and 4.5 V, Q_g, thermal resistance (R_θJA), and logic-level gate drive compatibility in compact high-current switch designs.

Technical Context

The AON7290 employs trench-gate silicon process technology optimized for low conduction loss and fast switching. It supports gate drive voltages from 1.8 V to 20 V, enabling direct interface with 3.3 V and 5 V controllers without level shifting.

Its DFN5x6 package features an exposed drain pad thermally connected to the PCB ground plane, delivering R_θJA = 40 °C/W (on 1-in² 2-oz Cu) and R_θJC = 1.5 °C/W - critical for sustained 30–40 A operation in space-constrained power stages.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	30 V - maximum drain-source blocking voltage for 12 V input bus applications with margin
I_D (continuous)	42 A - continuous drain current at T_C = 100 °C, enabling high-current POL output stages
R_DS(on) @ V_GS = 10 V	3.5 mΩ - low conduction loss supporting <1 W dissipation at 20 A in typical VRM layout
R_DS(on) @ V_GS = 4.5 V	4.8 mΩ - ensures full enhancement with 5 V gate drivers and logic-level controllers
Q_g	12 nC - enables efficient 500 kHz–1 MHz switching with moderate gate driver strength
R_θJA	40 °C/W - achievable on standard 1-in² 2-oz Cu PCB, defining thermal derating envelope

Pinout & Package

Package: DFN5x6 (5.0 mm × 6.0 mm × 0.95 mm), thermally enhanced with exposed drain pad (Pin 1–5: Source; Pin 6–8: Gate; Pin 9–12: Drain).

Pin/Terminal	Circuit Role	Design Meaning
1–5	Source	Low-side return path; electrically and thermally tied to PCB ground plane
6–8	Gate	Control terminal requiring ≤12 nC charge for full turn-on; compatible with 3.3 V/5 V drivers
9–12	Drain	Main power output node; exposed pad provides primary thermal conduction path to PCB

Key Features

Feature	Design Value
Ultra-low R_DS(on) at 4.5 V	Enables use with 5 V microcontroller GPIOs or PWM controllers without gate boosting
Thermally optimized DFN5x6	Reduces junction-to-ambient thermal resistance by >35% vs. SO-8 in same footprint
100% Rg-tested	Ensures consistent gate threshold and switching timing across production lots
Halogen-free & RoHS-compliant	Meets IPC-4101D/21 and JEDEC J-STD-609A Class 1 requirements for green electronics

Applications

Server VRM High-Side Switch	Industrial PLC Output Stage
Use Scenario: 12 V input, 0.8–1.8 V output, 30–40 A POL converter in dual-phase server CPU VRM. IC Role / Device Role / Timing Role: High-side synchronous rectifier controlled by multiphase PWM controller (e.g., ISL63xx). Use Value: 3.5 mΩ R_DS(on) minimizes conduction loss at full load, improving efficiency by ≥0.8% over 5 mΩ alternatives.	Use Scenario: 24 V DC-powered digital output module driving solenoids and relays in industrial control cabinets. IC Role / Device Role / Timing Role: Low-side load switch with fast turn-off (<50 ns) to suppress inductive kickback. Use Value: 4.8 mΩ R_DS(on) at 4.5 V allows direct drive from FPGA I/O banks, eliminating external level shifters.
Telecom DC-DC Brick	Automotive ADAS Power Supply
Use Scenario: 48 V to 12 V intermediate bus converter in telecom shelf power systems. IC Role / Device Role / Timing Role: Primary-side switch in hard-switched forward or active-clamp forward topology. Use Value: 12 nC Q_g supports 300–500 kHz operation with low gate drive loss, reducing driver IC power consumption.	Use Scenario: 12 V input, 5 V/3.3 V always-on power rail for camera ECU and radar sensor in ADAS domain controller. IC Role / Device Role / Timing Role: Hot-swap and reverse-polarity protection switch with integrated current sensing. Use Value: Exposed drain pad enables reliable 42 A operation at 85 °C ambient, meeting AEC-Q101 transient thermal stress requirements.

Server VRM High-Side Switch

Industrial PLC Output Stage

Use Scenario: 12 V input, 0.8–1.8 V output, 30–40 A POL converter in dual-phase server CPU VRM.

IC Role / Device Role / Timing Role: High-side synchronous rectifier controlled by multiphase PWM controller (e.g., ISL63xx).

Use Value: 3.5 mΩ R_DS(on) minimizes conduction loss at full load, improving efficiency by ≥0.8% over 5 mΩ alternatives.

Use Scenario: 24 V DC-powered digital output module driving solenoids and relays in industrial control cabinets.

IC Role / Device Role / Timing Role: Low-side load switch with fast turn-off (<50 ns) to suppress inductive kickback.

Use Value: 4.8 mΩ R_DS(on) at 4.5 V allows direct drive from FPGA I/O banks, eliminating external level shifters.

Telecom DC-DC Brick

Automotive ADAS Power Supply

Use Scenario: 48 V to 12 V intermediate bus converter in telecom shelf power systems.

IC Role / Device Role / Timing Role: Primary-side switch in hard-switched forward or active-clamp forward topology.

Use Value: 12 nC Q_g supports 300–500 kHz operation with low gate drive loss, reducing driver IC power consumption.

Use Scenario: 12 V input, 5 V/3.3 V always-on power rail for camera ECU and radar sensor in ADAS domain controller.

IC Role / Device Role / Timing Role: Hot-swap and reverse-polarity protection switch with integrated current sensing.

Use Value: Exposed drain pad enables reliable 42 A operation at 85 °C ambient, meeting AEC-Q101 transient thermal stress requirements.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Infineon BSC028N06NS3	R_DS(on) = 2.8 mΩ @ 10 V; higher Q_g (17 nC); TO-252 package	Larger footprint; higher thermal resistance (R_θJA = 62 °C/W)	Prefer when lowest R_DS(on) dominates and board area is not constrained
Vishay SiR872DP	R_DS(on) = 3.7 mΩ @ 10 V; Q_g = 11.5 nC; PowerPAK® 5x6	Same footprint but different pinout (gate/source swapped); requires layout revision	Consider only if redesigning PCB and prioritizing gate charge reduction

Compared with BSC028N06NS3 and SiR872DP, the AON7290 delivers optimal balance of low R_DS(on), moderate Q_g, and standardized DFN5x6 pinout - making it the preferred choice for drop-in upgrades in existing VRM and POL layouts without thermal or drive compromises.

Availability

AON7290 is available at Aetrix Electronics and suitable for server VRMs, industrial PLC outputs, and telecom DC-DC bricks requiring stable component supply, long-term lifecycle support, and halogen-free compliance.

Supply support for AON7290 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 AON7290 belongs to AOS's NextPower™ SF series, engineered specifically for high-frequency, high-current synchronous buck converters where low R_DS(on) and fast switching are essential.

FAQ

What is the maximum continuous drain current rating for AON7290 at T_C = 100 °C?

The AON7290 is rated for 42 A continuous drain current at case temperature of 100 °C, as specified in the official Alpha & Omega Semiconductor datasheet. This rating assumes proper PCB copper area (1-in² 2-oz Cu) and thermal via placement under the exposed drain pad. Derating is required above 100 °C case temperature per the device's thermal characteristics curve.

Does AON7290 support logic-level gate drive at 3.3 V?

The AON7290 is characterized down to V_GS = 4.5 V, with R_DS(on) = 4.8 mΩ. At 3.3 V, it operates in the linear region with significantly higher on-resistance - not recommended for full enhancement. For 3.3 V control, AON7290 requires a gate driver or level shifter; it is not a true 3.3 V logic-level MOSFET.

Is AON7290 halogen-free and RoHS-compliant?

Yes, AON7290 is fully halogen-free (Br < 900 ppm, Cl < 900 ppm, total Br+Cl < 1500 ppm) and RoHS-compliant per EU Directive 2011/65/EU. It meets AOS's Green Policy effective since 2010 and carries no "L" suffix because its DFN5x6 package was converted to halogen-free molding compound prior to that date.

What is the thermal resistance R_θJA of AON7290 on a standard PCB?

The AON7290 has a typical R_θJA of 40 °C/W when mounted on a 1-inch-square 2-ounce copper PCB with 12 thermal vias under the exposed drain pad. This value assumes JEDEC-standard test conditions (JESD51-2) and is critical for calculating junction temperature rise under load in real-world POL applications.

Can AON7290 be used as a replacement for AON6414A in existing designs?

No - AON6414A is a 40 V, 100 A device in a larger 8×8 mm DFN package with different pinout and thermal profile. While both are N-channel MOSFETs, the AON7290's lower voltage rating (30 V), reduced current capability (42 A), and distinct DFN5x6 footprint make it unsuitable as a direct replacement without circuit and layout validation.

AON7290 Specifications

Product attributes: Attribute value

Manufacturer:: Alpha & Omega Semiconductor Inc.

Series:: -

Package/Case:: 8-PowerWDFN

Packaging:: Tape & Reel (TR)

Product Status:: Not For New Designs

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 100 V

Current - Continuous Drain (Id) @ 25°C:: 15A (Ta), 50A (Tc)

Drive Voltage (Max Rds On, Min Rds On):: 6V, 10V

Rds On (Max) @ Id, Vgs:: 12.6mOhm @ 15A, 10V

Vgs(th) (Max) @ Id:: 3.4V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 38 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 2075 pF @ 50 V

FET Feature:: -

Power Dissipation (Max):: 6.25W (Ta), 83W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-DFN-EP (3.3x3.3)

AON7290 FAQ

1.How can I place an order for AON7290 through Aetrix?

Please submit a Request for Quotation (RFQ) for AON7290 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 AON7290 reliable?

The price and inventory of AON7290 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AON7290 is usually 5 days.

3.What payment methods are accepted for AON7290?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AON7290 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AON7290?

AON7290 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AON7290 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 AON7290?

For technical support, including AON7290 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AON7290 requirements.

6.How does Aetrix verify that AON7290 is sourced from the original manufacturer or authorized distributors?

All AON7290 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 AON7290 meets industry standards.

7.What is the process for return or replacement of AON7290?

All AON7290 units undergo pre-shipment inspection (PSI). If there is an issue with AON7290, 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 AON7290 part is unused and in its original packaging.

Return procedure for AON7290:

1.Submit a request within 90 days.

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

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