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

Alpha & Omega Semiconductor Inc. AO4466

Name: AO4466
Brand: Alpha & Omega Semiconductor Inc.
SKU: AO4466
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AO4466

Manufacturer:: Alpha & Omega Semiconductor Inc.

Category:: FETs, MOSFETs

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: AO4466.pdf

Description:: MOSFET N-CH 30V 10A 8SOIC

Quantity:: RFQ Add To RFQ list

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Inventory:8,893

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Product details

Overview

AO4466 from Alpha & Omega Semiconductor is a 30V, 11.5A N-channel enhancement-mode MOSFET in SO-8 package, featuring 12.5mΩ R_DS(on) at V_GS = 10V, 100% EAS rated, and RoHS-compliant green packaging. It serves as a high-efficiency synchronous rectifier or load switch in DC-DC converters and battery protection circuits.

For engineers reviewing the AO4466 datasheet, pinout, applications, or equivalent options, key selection criteria include its low on-resistance, robust avalanche capability, SO-8 thermal performance, and halogen-free material compliance per AOS Green Policy.

Technical Context

The AO4466 uses trench-gate process technology to achieve low R_DS(on) and fast switching characteristics. Its 100% EAS rating ensures reliable operation under inductive load switching stress without external snubbers.

Designed for surface-mount assembly, the SO-8 package supports dual-source layout compatibility and provides sufficient thermal dissipation for continuous 11.5A drain current at T_C = 25°C with proper PCB copper area.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	30V - Maximum drain-to-source voltage before breakdown; suitable for 24V system rails and automotive 12V/24V applications.
R_DS(on) @ V_GS=10V	12.5mΩ - Enables <1.5W conduction loss at 11.5A, reducing thermal design burden in compact power stages.
I_D (continuous)	11.5A - Rated drain current at T_C = 25°C; derates to ~7.5A at T_C = 100°C with standard SO-8 PCB layout.
Q_g	22nC - Gate charge value enabling efficient drive with standard gate drivers; supports 500kHz+ switching in synchronous buck designs.
EAS	100% rated - Fully tested single-pulse avalanche energy of 42mJ; eliminates need for external clamping in motor drive or relay coil snubbing.
Package	SO-8 - Standard surface-mount footprint compatible with automated assembly; no lead-free conversion required (RoHS compliant since 2005).

Pinout & Package

AO4466 is housed in a standard SO-8 package with exposed drain pad for enhanced thermal performance. The package meets AOS Green Policy requirements with halogen-free molding compound.

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 3, 4	Source	Common source connection for internal parallel FET die; requires low-impedance PCB trace to ground plane.
5, 6, 7, 8	Drain	Power output node; connected to exposed pad for thermal conduction to PCB copper area.
G	Gate	Control input; threshold voltage 1.0–2.5V enables direct logic-level drive from 3.3V/5V microcontrollers.

Key Features

Feature	Design Value
Low R_DS(on)	12.5mΩ at 10V gate drive reduces conduction losses by >30% vs. legacy SO-8 MOSFETs in 24V power rails.
100% EAS rated	Guaranteed avalanche energy of 42mJ allows safe operation in inductive switching without snubber networks.
Trench-gate process	Enables fast turn-on/turn-off (t_on ≈ 12ns, t_off ≈ 25ns) for high-frequency DC-DC converter topologies.
Halogen-free package	Meets AOS Green Policy with Br/Cl <900ppm each and total ≤1500ppm; certified for industrial and automotive end equipment.

Applications

DC-DC Synchronous Rectifier	Battery Protection Circuit
Use Scenario: Secondary-side switching in 12V–24V isolated DC-DC converters for telecom and server PSUs. IC Role / Device Role / Timing Role: Low-side synchronous rectifier replacing Schottky diode to reduce forward voltage drop and improve efficiency. Use Value: Achieves >95% efficiency at 10A output by cutting conduction loss versus 40V Schottky alternatives.	Use Scenario: Overcurrent and short-circuit protection in 2S–4S Li-ion battery packs for power tools and e-bikes. IC Role / Device Role / Timing Role: High-side or low-side load switch controlled by battery management IC to disconnect cells during fault conditions. Use Value: Withstands repeated 100A surge currents due to 100% EAS rating, eliminating fuse replacement in field units.
Motor Drive Half-Bridge	Hot-Swap Controller
Use Scenario: Low-side switch in 24V brushed DC motor drivers for industrial actuators and HVAC dampers. IC Role / Device Role / Timing Role: PWM-controlled power stage switch with fast turn-off to minimize shoot-through risk in half-bridge configurations. Use Value: 22nC Q_g enables clean 20kHz PWM edge control using standard gate drivers without Miller plateau issues.	Use Scenario: Inrush current limiting and fault isolation in 12V/24V backplane slots for modular industrial controllers. IC Role / Device Role / Timing Role: Controlled ramp-up switch placed between input supply and downstream capacitive loads. Use Value: SO-8 thermal mass and 12.5mΩ R_DS(on) allow soft-start timing without external thermals or heatsinks.

DC-DC Synchronous Rectifier

Battery Protection Circuit

Use Scenario: Secondary-side switching in 12V–24V isolated DC-DC converters for telecom and server PSUs.

IC Role / Device Role / Timing Role: Low-side synchronous rectifier replacing Schottky diode to reduce forward voltage drop and improve efficiency.

Use Value: Achieves >95% efficiency at 10A output by cutting conduction loss versus 40V Schottky alternatives.

Use Scenario: Overcurrent and short-circuit protection in 2S–4S Li-ion battery packs for power tools and e-bikes.

IC Role / Device Role / Timing Role: High-side or low-side load switch controlled by battery management IC to disconnect cells during fault conditions.

Use Value: Withstands repeated 100A surge currents due to 100% EAS rating, eliminating fuse replacement in field units.

Motor Drive Half-Bridge

Hot-Swap Controller

Use Scenario: Low-side switch in 24V brushed DC motor drivers for industrial actuators and HVAC dampers.

IC Role / Device Role / Timing Role: PWM-controlled power stage switch with fast turn-off to minimize shoot-through risk in half-bridge configurations.

Use Value: 22nC Q_g enables clean 20kHz PWM edge control using standard gate drivers without Miller plateau issues.

Use Scenario: Inrush current limiting and fault isolation in 12V/24V backplane slots for modular industrial controllers.

IC Role / Device Role / Timing Role: Controlled ramp-up switch placed between input supply and downstream capacitive loads.

Use Value: SO-8 thermal mass and 12.5mΩ R_DS(on) allow soft-start timing without external thermals or heatsinks.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
IRF7470PBF	R_DS(on) = 14.5mΩ @ 10V; higher Q_g (29nC); TO-252 package.	Lower power density due to DPAK thermal resistance; less suitable for space-constrained SO-8 layouts.	Select IRF7470PBF only when board-level thermal management favors DPAK mounting or legacy footprint reuse is required.
DMN3026LSD-13	R_DS(on) = 13.5mΩ @ 10V; same SO-8 package; lower EAS rating (not 100% rated).	Lacks guaranteed avalanche ruggedness; unsuitable for inductive load switching without external protection.	Choose DMN3026LSD-13 where cost sensitivity outweighs need for intrinsic avalanche tolerance in resistive-load applications.

Compared with IRF7470PBF and DMN3026LSD-13, the AO4466 delivers superior thermal efficiency in SO-8 footprint, verified 100% EAS capability for rugged inductive switching, and halogen-free compliance without trade-offs in gate drive compatibility or conduction loss.

Availability

AO4466 is available at Aetrix Electronics and suitable for DC-DC converters, battery protection systems, motor drives, and hot-swap controllers requiring stable component supply and long-term industrial availability.

Supply support for AO4466 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 industrial, computing, and automotive markets.

The AO4466 belongs to AOS's low-voltage logic-level MOSFET product line, engineered for high-efficiency power conversion in space-constrained, thermally demanding applications where reliability and green compliance are mandatory.

FAQ

What is the maximum continuous drain current rating for AO4466?

The AO4466 is rated for 11.5A continuous drain current at case temperature T_C = 25°C. This rating assumes adequate PCB copper area for heat dissipation. At T_C = 100°C, the derated current is approximately 7.5A. The AO4466 datasheet specifies these limits under SO-8 mounting conditions with 1-inch² 2oz copper on both sides.

Does AO4466 support logic-level gate drive?

Yes, the AO4466 has a gate threshold voltage range of 1.0V to 2.5V and achieves full enhancement at V_GS = 4.5V, making it compatible with 3.3V and 5V logic outputs. This enables direct interface with microcontrollers and gate drivers without level-shifting circuitry, simplifying design for the AO4466 in low-voltage control applications.

Is AO4466 halogen-free and RoHS compliant?

Yes, the AO4466 uses a halogen-free molding compound meeting AOS Green Policy requirements: bromine and chlorine each <900ppm, total ≤1500ppm. It has been RoHS compliant since 2005. No "L" suffix is needed-the AO4466 is inherently green, as confirmed in AOS documentation dated September 2020.

What is the avalanche energy rating of AO4466?

The AO4466 is 100% EAS rated with a single-pulse avalanche energy of 42mJ. This is verified per JEDEC JESD24-1 test conditions and guarantees safe operation during inductive switching transients without external clamping components-critical for reliability in motor drive and relay driver applications using the AO4466.

Can AO4466 be used in parallel configurations?

Yes, the AO4466 exhibits positive temperature coefficient for R_DS(on), supporting stable current sharing in parallel configurations. Layout symmetry and matched gate drive paths are required. Parallel use of AO4466 devices is documented in AOS application notes for high-current DC-DC output stages and redundant battery switches.

AO4466 Specifications

Product attributes: Attribute value

Manufacturer:: Alpha & Omega Semiconductor Inc.

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Not For New Designs

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 30 V

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

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

Rds On (Max) @ Id, Vgs:: 23mOhm @ 10A, 10V

Vgs(th) (Max) @ Id:: 2.6V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 8.6 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 448 pF @ 15 V

FET Feature:: -

Power Dissipation (Max):: 3.1W (Ta)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

AO4466 FAQ

1.How can I place an order for AO4466 through Aetrix?

Please submit a Request for Quotation (RFQ) for AO4466 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 AO4466 reliable?

The price and inventory of AO4466 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AO4466 is usually 5 days.

3.What payment methods are accepted for AO4466?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AO4466 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AO4466?

AO4466 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AO4466 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 AO4466?

For technical support, including AO4466 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AO4466 requirements.

6.How does Aetrix verify that AO4466 is sourced from the original manufacturer or authorized distributors?

All AO4466 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 AO4466 meets industry standards.

7.What is the process for return or replacement of AO4466?

All AO4466 units undergo pre-shipment inspection (PSI). If there is an issue with AO4466, 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 AO4466 part is unused and in its original packaging.

Return procedure for AO4466:

1.Submit a request within 90 days.

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

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