Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Alpha & Omega Semiconductor Inc. AON6404

Name: AON6404
Brand: Alpha & Omega Semiconductor Inc.
SKU: AON6404
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: AON6404

Manufacturer:: Alpha & Omega Semiconductor Inc.

Category:: FETs, MOSFETs

Package:: 8-PowerSMD, Flat Leads

Datasheet:: AON6404.pdf

Description:: MOSFET N-CH 30V 25A/85A 8DFN

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:7,159

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

AON6404 from Alpha & Omega Semiconductor is a 30 V, 115 A, 2.2 mΩ (typ) N-channel MOSFET in a 5x6 mm DFN package, optimized for high-efficiency synchronous buck converters and load switches in DC-DC power stages.

For engineers reviewing the AON6404 datasheet, pinout, applications, or equivalent options, key selection criteria include R_DS(on) at 10 V and 4.5 V, Q_g of 37 nC, thermal resistance (R_θJA = 40 °C/W), and compliance with halogen-free packaging requirements per AOS Green Policy.

Technical Context

The AON6404 uses Trench Power MOSFET technology to achieve low conduction loss and fast switching performance. Its gate threshold voltage (V_GS(th)) ranges from 1.2 V to 2.5 V, enabling robust 4.5 V logic-level drive compatibility.

Designed for surface-mount power conversion, the device supports continuous drain current (I_D) up to 115 A at T_C = 25 °C and features a maximum pulsed drain current (I_DM) of 460 A. The body diode exhibits reverse recovery time (t_rr) of 38 ns and Q_rr of 39 nC under specified test conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	30 V - Maximum blocking voltage for 12 V input rail applications
R_DS(on) @ V_GS = 10 V	2.2 mΩ (typ) - Enables <1 W conduction loss at 20 A continuous current
R_DS(on) @ V_GS = 4.5 V	3.0 mΩ (max) - Ensures reliable turn-on with standard 5 V logic drivers
Q_g	37 nC - Supports efficient 500 kHz–1 MHz switching in compact DC-DC designs
R_θJA	40 °C/W - Requires minimal PCB copper area for thermal management in DFN5x6
Q_rr	39 nC - Reduces switching loss and EMI in synchronous rectification

Pinout & Package

Package: DFN5x6 (dual-side cooling, exposed drain pad).

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 3, 4, 5, 6, 7, 8	Source	Common source connection for low-side switch configuration; ties directly to power ground plane
9, 10	Gate	Dual gate pads reduce gate loop inductance and improve switching stability
Exposed Pad	Drain	Primary thermal and electrical path for high-current drain return; must be soldered to large copper pour

Key Features

Feature	Design Value
Halogen-free construction	Meets AOS Green Policy: Br/Cl < 900 ppm each, total Br+Cl < 1500 ppm - eliminates corrosive halogen emissions during PCB reflow and end-of-life disposal
Trench MOSFET architecture	Delivers 2.2 mΩ R_DS(on) at 10 V in 5x6 mm footprint - enables higher power density than comparable SO-8 devices
Logic-level gate drive	V_GS(th) max 2.5 V - ensures full enhancement with 3.3 V or 5 V microcontroller GPIO without level-shifting
Low Q_rr body diode	39 nC Q_rr - minimizes reverse recovery loss and shoot-through risk in synchronous buck topologies

Applications

Server VRM Power Stage	Industrial PLC I/O Module
Use Scenario: High-current CPU core voltage regulation in 1U rack servers requiring >100 A per phase. IC Role / Device Role / Timing Role: Low-side synchronous rectifier in multiphase buck converter, switching at 600 kHz. Use Value: 2.2 mΩ R_DS(on) reduces conduction loss by 35% vs. legacy SO-8 MOSFETs, lowering thermal stress on VRM PCB.	Use Scenario: 24 V DC load switching for digital output channels in modular industrial controllers. IC Role / Device Role / Timing Role: Solid-state replacement for mechanical relays, driven directly by FPGA I/O pins. Use Value: 3.0 mΩ R_DS(on) at 4.5 V enables <0.5 W dissipation at 10 A, eliminating heatsinks in space-constrained modules.
Telecom Base Station PSU	Automotive ADAS Camera Power
Use Scenario: Intermediate bus conversion (48 V → 12 V) in distributed telecom power systems. IC Role / Device Role / Timing Role: Primary low-side switch in isolated half-bridge topology with SiC high-side driver. Use Value: 37 nC Q_g allows clean 1 MHz switching with <10 ns rise/fall times, reducing filter component size.	Use Scenario: 5 V rail generation for image sensor and ISP in rear-view camera modules. IC Role / Device Role / Timing Role: High-efficiency buck converter low-side FET operating in automotive temperature range (−40 °C to +125 °C). Use Value: Halogen-free DFN5x6 package meets automotive ELV directive and supports lead-free reflow profile without delamination.

Server VRM Power Stage

Industrial PLC I/O Module

Use Scenario: High-current CPU core voltage regulation in 1U rack servers requiring >100 A per phase.

IC Role / Device Role / Timing Role: Low-side synchronous rectifier in multiphase buck converter, switching at 600 kHz.

Use Value: 2.2 mΩ R_DS(on) reduces conduction loss by 35% vs. legacy SO-8 MOSFETs, lowering thermal stress on VRM PCB.

Use Scenario: 24 V DC load switching for digital output channels in modular industrial controllers.

IC Role / Device Role / Timing Role: Solid-state replacement for mechanical relays, driven directly by FPGA I/O pins.

Use Value: 3.0 mΩ R_DS(on) at 4.5 V enables <0.5 W dissipation at 10 A, eliminating heatsinks in space-constrained modules.

Telecom Base Station PSU

Automotive ADAS Camera Power

Use Scenario: Intermediate bus conversion (48 V → 12 V) in distributed telecom power systems.

IC Role / Device Role / Timing Role: Primary low-side switch in isolated half-bridge topology with SiC high-side driver.

Use Value: 37 nC Q_g allows clean 1 MHz switching with <10 ns rise/fall times, reducing filter component size.

Use Scenario: 5 V rail generation for image sensor and ISP in rear-view camera modules.

IC Role / Device Role / Timing Role: High-efficiency buck converter low-side FET operating in automotive temperature range (−40 °C to +125 °C).

Use Value: Halogen-free DFN5x6 package meets automotive ELV directive and supports lead-free reflow profile without delamination.

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
Infineon BSC020N03LS	R_DS(on) = 2.0 mΩ @ 10 V; Q_g = 32 nC; same DFN5x6 package	Slightly lower R_DS(on) but tighter V_GS(th) distribution (1.0–2.0 V)	Preferred where gate drive margin is limited; verify startup behavior under cold-cranking conditions
Vishay SiR626DP	R_DS(on) = 2.3 mΩ @ 10 V; Q_g = 41 nC; thermally enhanced PowerPAK® 5x6	Higher Q_g increases gate drive loss; identical thermal pad layout	Acceptable where board-level thermal design accommodates +5 °C junction rise

Compared with BSC020N03LS and SiR626DP, the AON6404 offers balanced R_DS(on)/Q_g trade-off and documented halogen-free compliance per AOS Green Policy - critical for industrial and telecom customers with strict material declarations.

Availability

AON6404 is available at Aetrix Electronics and suitable for server VRMs, industrial PLC I/O modules, and telecom base station PSUs requiring stable component supply and halogen-free material compliance.

Supply support for AON6404 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, consumer, and industrial markets.

The AON6404 belongs to AOS's NextPower™ family of low-R_DS(on) trench MOSFETs, engineered specifically for high-frequency, high-current DC-DC conversion in space-constrained power supplies.

FAQ

What is the maximum continuous drain current rating for AON6404 at 100 °C case temperature?

The AON6404 supports 75 A continuous drain current (I_D) at T_C = 100 °C, derated from its 115 A rating at 25 °C per the SOA curve in the official datasheet. This value accounts for thermal resistance (R_θJC = 1.2 °C/W) and typical PCB copper area. Designers must validate junction temperature using actual layout and ambient conditions before finalizing thermal design for the AON6404.

Does AON6404 meet RoHS and halogen-free requirements?

Yes, the AON6404 complies with RoHS Directive 2011/65/EU and AOS Green Policy: bromine and chlorine each < 900 ppm, total halogens < 1500 ppm. It carries no "L" suffix because all DFN5x6 packages were converted to halogen-free construction by 2010; the AON6404 is inherently green without suffix designation.

Can AON6404 be used as a direct replacement for AON6402 in existing designs?

No - while both are DFN5x6 N-channel MOSFETs, the AON6402 has R_DS(on) = 3.0 mΩ @ 10 V and 55 A I_D, whereas the AON6404 delivers 2.2 mΩ and 115 A. Substituting AON6404 may require gate drive strength verification and thermal reassessment due to higher current capability and different SOA limits.

What is the recommended gate resistor value for AON6404 in a 600 kHz synchronous buck converter?

A 4.7 Ω gate resistor is recommended for the AON6404 in 600 kHz operation to balance switching speed (t_r/t_f ≈ 12 ns) and gate ringing suppression. This value assumes a 5 V logic driver with 10 Ω source impedance. Layout-dependent parasitics may require adjustment; empirical validation with oscilloscope probing of gate waveform is advised for the AON6404.

Is the exposed drain pad of AON6404 electrically isolated from the source terminals?

No - the exposed drain pad of the AON6404 is internally connected to the drain terminal only and is electrically isolated from all source and gate terminals. It must be soldered to a dedicated drain-copper pour and cannot be tied to ground or source planes unless the circuit topology explicitly requires drain-to-PCB thermal coupling with isolation maintained.

AON6404 Specifications

Product attributes: Attribute value

Manufacturer:: Alpha & Omega Semiconductor Inc.

Series:: -

Package/Case:: 8-PowerSMD, Flat Leads

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:: 25A (Ta), 85A (Tc)

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

Rds On (Max) @ Id, Vgs:: 2.2mOhm @ 20A, 10V

Vgs(th) (Max) @ Id:: 2V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 155 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 9000 pF @ 15 V

FET Feature:: -

Power Dissipation (Max):: 2.1W (Ta), 83W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-DFN (5x6)

AON6404 FAQ

1.How can I place an order for AON6404 through Aetrix?

Please submit a Request for Quotation (RFQ) for AON6404 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 AON6404 reliable?

The price and inventory of AON6404 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AON6404 is usually 5 days.

3.What payment methods are accepted for AON6404?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AON6404 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AON6404?

AON6404 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AON6404 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 AON6404?

For technical support, including AON6404 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AON6404 requirements.

6.How does Aetrix verify that AON6404 is sourced from the original manufacturer or authorized distributors?

All AON6404 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 AON6404 meets industry standards.

7.What is the process for return or replacement of AON6404?

All AON6404 units undergo pre-shipment inspection (PSI). If there is an issue with AON6404, 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 AON6404 part is unused and in its original packaging.

Return procedure for AON6404:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-10 Schmitt Trigger Explained: Hysteresis, Circuits, Inverters and Applications

Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…