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

Alpha & Omega Semiconductor Inc. AON7424

Name: AON7424
Brand: Alpha & Omega Semiconductor Inc.
SKU: AON7424
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AON7424

Manufacturer:: Alpha & Omega Semiconductor Inc.

Category:: FETs, MOSFETs

Package:: 8-PowerVDFN

Datasheet:: AON7424.pdf

Description:: MOSFET N-CH 30V 18A/40A 8DFN

Quantity:: RFQ Add To RFQ list

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Inventory:9,037

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Product details

Overview

AON7424 from Alpha & Omega Semiconductor is a 30 V, 42 A, 11.5 mΩ N-channel MOSFET in a 5x6 mm DFN package, optimized for high-efficiency DC-DC power conversion in server VRMs and POL converters.

For engineers reviewing the AON7424 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 compliance with halogen-free packaging requirements.

Technical Context

The AON7424 employs trench-gate MOSFET technology to achieve low on-resistance and fast switching characteristics. It supports logic-level gate drive (V_GS(th) = 1.0–2.5 V) and exhibits low gate charge (Q_g = 18 nC) and output charge (Q_oss = 29 nC), enabling high-frequency operation in synchronous buck topologies.

Thermal performance is defined by R_θJA = 40 °C/W (standard PCB layout) and R_θJC = 2.0 °C/W, with the exposed drain pad electrically connected to the internal die for efficient heat transfer to the PCB ground plane.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	30 V - maximum drain-source blocking voltage for 12 V input rail applications
I_D (continuous)	42 A - continuous drain current at T_C = 100 °C, suitable for high-current POL stages
R_DS(on) @ V_GS = 10 V	11.5 mΩ - enables <1 W conduction loss at 30 A in high-side switch position
R_DS(on) @ V_GS = 4.5 V	15.5 mΩ - ensures robust turn-on with 5 V or 3.3 V gate drivers in synchronous rectification
Q_g	18 nC - reduces gate drive power and switching losses in >500 kHz converters
R_θJA	40 °C/W - defines junction-to-ambient thermal rise under standard 1-in² 2-oz copper layout

Pinout & Package

Package: 5×6 mm DFN-8 (exposed drain pad), RoHS-compliant and halogen-free per AOS Green Policy (no "L" suffix required - AON7424 is green by default).

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 3, 4, 5, 6, 7, 8 (all except pad)	Source	Internally paralleled source terminals reduce package inductance and improve current sharing
Drain Pad (bottom)	Drain	Exposed metal pad electrically tied to drain; must be soldered to large PCB copper area for thermal and electrical performance
Gate (Pin 1 only)	Control Input	Single gate connection point; low input capacitance (C_iss = 1720 pF) minimizes driver loading

Key Features

Feature	Design Value
Ultra-low R_DS(on) at 4.5 V	15.5 mΩ enables full enhancement with 5 V microcontroller GPIO or dedicated gate drivers
Trench MOSFET architecture	Optimizes trade-off between switching speed and conduction loss for 300–1000 kHz DC-DC operation
Halogen-free and RoHS-compliant	Meets AOS Green Policy: Br/Cl < 900 ppm each, total Br+Cl < 1500 ppm - no "L" suffix needed
Low Q_g/Q_oss ratio	18 nC / 29 nC improves hard-switching efficiency and reduces EMI in compact layouts

Applications

Server VRM High-Side Switch	Point-of-Load Converter
Use Scenario: Primary high-side switch in 48 V to 12 V or 12 V to 1.8 V multiphase buck converters for CPU/GPU power delivery. IC Role / Device Role / Timing Role: Synchronous rectifier controlled by external PWM controller; operates at 300–600 kHz with tight dead-time management. Use Value: 11.5 mΩ R_DS(on) at 10 V reduces conduction loss by >15% vs. comparable 30 V MOSFETs, improving VRM efficiency at 40–60 A load.	Use Scenario: Final-stage step-down converter supplying core voltage to FPGAs, ASICs, or AI accelerators. IC Role / Device Role / Timing Role: Low-side synchronous rectifier in 5 V or 3.3 V input buck regulator; driven by integrated controller gate outputs. Use Value: 15.5 mΩ R_DS(on) at 4.5 V ensures full turn-on with 5 V gate drive, minimizing body diode conduction and associated reverse recovery loss.
Industrial Motor Drive Half-Bridge	Telecom DC-DC Module
Use Scenario: Upper or lower switch in 24 V BLDC motor gate driver stage requiring fast commutation and thermal resilience. IC Role / Device Role / Timing Role: Power switch in half-bridge configuration; switched at 20–100 kHz with bootstrap or isolated gate drive. Use Value: R_θJC = 2.0 °C/W allows direct thermal coupling to heatsink via PCB copper, sustaining 35 A continuous current at T_C = 100 °C.	Use Scenario: Isolated or non-isolated 48 V to 12 V/5 V telecom power module operating in forced-air or convection-cooled enclosures. IC Role / Device Role / Timing Role: Main power switch in primary-side active clamp or secondary-side synchronous rectification stage. Use Value: Halogen-free packaging meets IPC-1752A material declaration requirements for telecom infrastructure equipment.

Server VRM High-Side Switch

Point-of-Load Converter

Use Scenario: Primary high-side switch in 48 V to 12 V or 12 V to 1.8 V multiphase buck converters for CPU/GPU power delivery.

IC Role / Device Role / Timing Role: Synchronous rectifier controlled by external PWM controller; operates at 300–600 kHz with tight dead-time management.

Use Value: 11.5 mΩ R_DS(on) at 10 V reduces conduction loss by >15% vs. comparable 30 V MOSFETs, improving VRM efficiency at 40–60 A load.

Use Scenario: Final-stage step-down converter supplying core voltage to FPGAs, ASICs, or AI accelerators.

IC Role / Device Role / Timing Role: Low-side synchronous rectifier in 5 V or 3.3 V input buck regulator; driven by integrated controller gate outputs.

Use Value: 15.5 mΩ R_DS(on) at 4.5 V ensures full turn-on with 5 V gate drive, minimizing body diode conduction and associated reverse recovery loss.

Industrial Motor Drive Half-Bridge

Telecom DC-DC Module

Use Scenario: Upper or lower switch in 24 V BLDC motor gate driver stage requiring fast commutation and thermal resilience.

IC Role / Device Role / Timing Role: Power switch in half-bridge configuration; switched at 20–100 kHz with bootstrap or isolated gate drive.

Use Value: R_θJC = 2.0 °C/W allows direct thermal coupling to heatsink via PCB copper, sustaining 35 A continuous current at T_C = 100 °C.

Use Scenario: Isolated or non-isolated 48 V to 12 V/5 V telecom power module operating in forced-air or convection-cooled enclosures.

IC Role / Device Role / Timing Role: Main power switch in primary-side active clamp or secondary-side synchronous rectification stage.

Use Value: Halogen-free packaging meets IPC-1752A material declaration requirements for telecom infrastructure equipment.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SiR872DP	R_DS(on) = 12.5 mΩ @ 10 V; Q_g = 22 nC; same DFN-8 package	Slightly higher gate charge increases driver loss at >1 MHz; otherwise drop-in compatible	Prefer when higher V_GS margin or legacy SiR872DP BOM reuse is required
IRF7470PBF	R_DS(on) = 14.5 mΩ @ 10 V; SO-8 package; R_θJA = 62 °C/W	Larger footprint and higher thermal resistance limit current handling to ≤25 A continuous	Select only if SO-8 footprint compatibility is mandatory and power density is secondary

Compared with SiR872DP and IRF7470PBF, the AON7424 delivers the lowest R_DS(on) in its class with superior thermal performance in DFN-8, making it optimal for space-constrained, high-current POL designs where efficiency and thermal headroom are critical.

Availability

AON7424 is available at Aetrix Electronics and suitable for server VRMs, telecom DC-DC modules, and industrial motor drives requiring stable component supply and halogen-free compliance.

Supply support for AON7424 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 ICs for computing, industrial, and communications markets.

The AON7424 belongs to AOS's NextPower™ DFN series, engineered specifically for high-efficiency, high-density DC-DC conversion in datacenter and telecom infrastructure.

FAQ

What is the maximum continuous drain current rating for the AON7424?

The AON7424 is rated for 42 A continuous drain current at case temperature T_C = 100 °C. This rating assumes proper PCB thermal design with the exposed drain pad fully soldered to ≥1 in² of 2-oz copper. At T_C = 25 °C, the absolute maximum is 100 A, but real-world operation is limited by thermal dissipation. The AON7424 datasheet specifies derating curves based on ambient and board layout conditions.

Does the AON7424 require a halogen-free designation suffix like "L"?

No - the AON7424 is manufactured in a halogen-free package per AOS Green Policy and does not require an "L" suffix. All AON7424 units shipped post-2010 meet Br/Cl < 900 ppm and total Br+Cl < 1500 ppm requirements. The "L" suffix applies only to legacy TO-220, TO-247, and similar packages; DFN-8 devices like the AON7424 are green by default.

What is the gate threshold voltage range for the AON7424?

The AON7424 has a gate threshold voltage (V_GS(th)) range of 1.0 V to 2.5 V at I_D = 250 µA. This logic-level characteristic allows reliable turn-on with 3.3 V or 5 V gate drivers. The typical V_GS(th) is 1.6 V, and the device remains fully enhanced above 4.5 V, supporting robust operation in synchronous buck controllers with tight gate drive margins.

Can the AON7424 be used in parallel configurations?

Yes - the AON7424 supports paralleling due to its positive temperature coefficient of R_DS(on), which promotes current sharing. For stable parallel operation, ensure matched gate drive routing, symmetrical PCB copper areas, and identical thermal paths. The AON7424's low Q_g (18 nC) also reduces gate oscillation risk during simultaneous switching. Always verify stability with layout-specific SPICE simulation before finalizing multi-device designs.

What is the recommended PCB footprint and thermal pad layout for the AON7424?

AOS recommends a 5×6 mm DFN-8 footprint with an exposed 4.2×4.2 mm drain pad centered beneath the package. The pad must connect to ≥1 in² of 2-oz inner-layer copper via ≥6 thermal vias (0.3 mm diameter, 0.8 mm pitch). The AON7424 datasheet provides exact land pattern dimensions and stencil aperture guidelines to ensure void-free solder joint formation and optimal thermal transfer from the drain pad to the PCB.

AON7424 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:: 18A (Ta), 40A (Tc)

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

Rds On (Max) @ Id, Vgs:: 5.2mOhm @ 20A, 10V

Vgs(th) (Max) @ Id:: 2.3V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 60 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 3450 pF @ 15 V

FET Feature:: -

Power Dissipation (Max):: 3.1W (Ta), 36W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

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

AON7424 FAQ

1.How can I place an order for AON7424 through Aetrix?

Please submit a Request for Quotation (RFQ) for AON7424 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 AON7424 reliable?

The price and inventory of AON7424 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AON7424 is usually 5 days.

3.What payment methods are accepted for AON7424?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AON7424 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AON7424?

AON7424 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AON7424 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 AON7424?

For technical support, including AON7424 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AON7424 requirements.

6.How does Aetrix verify that AON7424 is sourced from the original manufacturer or authorized distributors?

All AON7424 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 AON7424 meets industry standards.

7.What is the process for return or replacement of AON7424?

All AON7424 units undergo pre-shipment inspection (PSI). If there is an issue with AON7424, 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 AON7424 part is unused and in its original packaging.

Return procedure for AON7424:

1.Submit a request within 90 days.

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

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