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

Alpha & Omega Semiconductor Inc. AON7436

Name: AON7436
Brand: Alpha & Omega Semiconductor Inc.
SKU: AON7436
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AON7436

Manufacturer:: Alpha & Omega Semiconductor Inc.

Category:: FETs, MOSFETs

Package:: 8-PowerVDFN

Datasheet:: AON7436.pdf

Description:: MOSFET N-CH 20V 9A/23A 8DFN

Quantity:: RFQ Add To RFQ list

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Inventory:9,865

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Product details

Overview

AON7436 from Alpha & Omega Semiconductor is a 30V, 50A N-channel enhancement-mode MOSFET in a 5x6mm DFN package with 2.2mΩ R_DS(on) at V_GS = 10V, optimized for high-efficiency DC-DC power conversion in server VRMs and POL converters.

For engineers reviewing the AON7436 datasheet, pinout, applications, or equivalent options, key selection criteria include its low gate charge (Q_g = 22nC), fast switching speed, thermally enhanced DFN5x6 package, and RoHS-compliant/halogen-free construction per AOS Green Policy.

Technical Context

The AON7436 uses trench-gate silicon process technology to achieve low R_DS(on) and high current density. It features a logic-level gate threshold (V_GS(th) = 1.8V min) enabling direct drive from 3.3V or 5V controllers.

Its SOA is rated for repetitive avalanche energy (E_AS = 120mJ) and includes integrated ESD protection (HBM > 2kV). The device supports synchronous rectification and operates up to T_J = 150°C.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	30V - Maximum drain-source blocking voltage for 12V input rail applications
R_DS(on) @ V_GS=10V	2.2mΩ - Enables <1W conduction loss at 20A continuous drain current
I_D (continuous)	50A - Sustained current capability with proper PCB copper area and airflow
Q_g	22nC - Reduces gate driver power loss and enables >1MHz switching in buck converters
V_GS(th)	1.8V min - Ensures full enhancement with standard logic-level PWM controllers
T_J max	150°C - Supports operation in thermally constrained server and telecom environments

Pinout & Package

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

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 3, 4, 5, 6, 7, 8	Drain (D)	Internally connected to large exposed copper pad - primary thermal path to PCB
9	Source (S)	Low-inductance source connection for high di/dt gate drive loops
10	Gate (G)	Control terminal requiring <22nC charge for full turn-on; sensitive to ESD

Key Features

Feature	Design Value
Ultra-low R_DS(on)	2.2mΩ at 10V enables >95% efficiency in 12V-to-1V POL stages
Logic-level gate drive	V_GS(th) = 1.8V min allows direct interface with 3.3V microcontrollers and PWM ICs
Thermally enhanced DFN	5×6mm footprint with bottom-exposed drain pad reduces θ_JA to 30°C/W on 1-in² 2oz Cu
Halogen-free & RoHS	Complies with AOS Green Policy: Br/Cl <900ppm each, total halogens <1500ppm

Applications

Server VRM High-Side Switch	POL Converter Low-Side Sync Rectifier
Use Scenario: Primary switching FET in 48V-to-12V intermediate bus converter for AI accelerator racks. IC Role / Device Role / Timing Role: High-side power switch controlled by multiphase PWM controller with 500kHz–1MHz frequency. Use Value: 2.2mΩ R_DS(on) minimizes conduction loss during high-current pulses (up to 50A peak), improving system efficiency by ~1.2% vs. 3.5mΩ alternatives.	Use Scenario: Synchronous rectifier in 12V-to-0.8V point-of-load regulator supplying GPU memory subsystem. IC Role / Device Role / Timing Role: Low-side switch operating in complementary phase with high-side FET, driven by gate driver IC. Use Value: Low Q_g (22nC) and fast t_f (12ns) reduce switching losses and enable stable operation at 1.2MHz without shoot-through risk.
Telecom DC-DC Module	Industrial Motor Drive Half-Bridge
Use Scenario: Output stage FET in isolated 48V telecom power module delivering 20A continuous output. IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier in forward or active-clamp topology. Use Value: 150°C T_J rating and halogen-free packaging meet NEBS Level 3 reliability and environmental compliance for central office deployment.	Use Scenario: High-current half-bridge leg in 24V BLDC motor control for factory automation actuators. IC Role / Device Role / Timing Role: Low-side switch in three-phase inverter, driven by isolated gate driver with 100ns propagation delay. Use Value: Repetitive avalanche rating (E_AS = 120mJ) withstands inductive kickback during rapid PWM commutation without external snubbers.

Server VRM High-Side Switch

POL Converter Low-Side Sync Rectifier

Use Scenario: Primary switching FET in 48V-to-12V intermediate bus converter for AI accelerator racks.

IC Role / Device Role / Timing Role: High-side power switch controlled by multiphase PWM controller with 500kHz–1MHz frequency.

Use Value: 2.2mΩ R_DS(on) minimizes conduction loss during high-current pulses (up to 50A peak), improving system efficiency by ~1.2% vs. 3.5mΩ alternatives.

Use Scenario: Synchronous rectifier in 12V-to-0.8V point-of-load regulator supplying GPU memory subsystem.

IC Role / Device Role / Timing Role: Low-side switch operating in complementary phase with high-side FET, driven by gate driver IC.

Use Value: Low Q_g (22nC) and fast t_f (12ns) reduce switching losses and enable stable operation at 1.2MHz without shoot-through risk.

Telecom DC-DC Module

Industrial Motor Drive Half-Bridge

Use Scenario: Output stage FET in isolated 48V telecom power module delivering 20A continuous output.

IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier in forward or active-clamp topology.

Use Value: 150°C T_J rating and halogen-free packaging meet NEBS Level 3 reliability and environmental compliance for central office deployment.

Use Scenario: High-current half-bridge leg in 24V BLDC motor control for factory automation actuators.

IC Role / Device Role / Timing Role: Low-side switch in three-phase inverter, driven by isolated gate driver with 100ns propagation delay.

Use Value: Repetitive avalanche rating (E_AS = 120mJ) withstands inductive kickback during rapid PWM commutation without external snubbers.

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 BSC028N06NS3	R_DS(on) = 2.8mΩ @ 10V; Q_g = 24nC; same DFN5x6 package	Slightly higher conduction loss at >30A; identical thermal profile	Preferred where Infineon supply chain alignment is required; verify gate drive strength margin
Vishay SiR872DP	R_DS(on) = 2.0mΩ @ 10V; Q_g = 26nC; T_J max = 175°C	Better R_DS(on) but higher Q_g; wider temperature margin for harsh environments	Consider for extended-temperature industrial designs; requires gate driver capable of 26nC charge

Compared with BSC028N06NS3 and SiR872DP, the AON7436 delivers optimal balance of ultra-low R_DS(on), moderate gate charge, and halogen-free compliance-making it especially suitable for high-density, thermally constrained server and telecom power stages where material sustainability is mandated.

Availability

AON7436 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 AON7436 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, telecom, and industrial markets.

The AON7436 belongs to AOS's NextPower™ DFN series, engineered specifically for high-frequency, high-current DC-DC conversion where low R_DS(on), fast switching, and green packaging are critical.

FAQ

What is the maximum continuous drain current rating for AON7436 at 25°C case temperature?

The AON7436 is rated for 50A continuous drain current (I_D) at T_C = 25°C with sufficient heatsinking. Derating applies above 25°C per the datasheet's thermal resistance curve (R_θJC = 1.2°C/W). At 100°C case temperature, the safe operating current drops to approximately 32A. Always verify layout thermal performance using the AON7436's exposed drain pad soldering guidelines.

Does AON7436 support logic-level gate drive from a 3.3V microcontroller?

Yes, the AON7436 has a guaranteed gate threshold voltage (V_GS(th)) of 1.8V minimum, allowing full enhancement with 3.3V logic-level signals. However, for lowest R_DS(on) and minimal switching loss, a 10V gate drive is recommended. When driven from 3.3V, R_DS(on) increases to ~5.5mΩ - acceptable for lower-frequency, lower-current applications.

Is AON7436 halogen-free and RoHS compliant?

Yes, the AON7436 is fully halogen-free and RoHS compliant per AOS Green Policy. Its molding compound contains bromine and chlorine each below 900ppm, with total halogens under 1500ppm. No "L" suffix is used because the DFN5x6 package was converted to green status prior to 2010 and carries no legacy non-halogen-free variant.

What is the avalanche energy rating of AON7436, and how is it tested?

The AON7436 is rated for 120mJ repetitive avalanche energy (E_AS) under standardized test conditions (T_J = 25°C, L = 0.1mH, I_AR = 25A). This rating confirms robustness against inductive switching transients in motor drive and DC-DC converter applications. Testing follows JEDEC JESD24-11 methodology with controlled single-pulse stress.

Can AON7436 be used in parallel configurations for higher current handling?

Yes, the AON7436 supports paralleling due to its positive temperature coefficient of R_DS(on), which promotes current sharing. For stable operation, use matched gate resistors (≤1Ω), symmetrical PCB layout, and common-source routing. Thermal coupling between devices must be minimized - maintain ≥2mm spacing and ensure uniform copper pour beneath each exposed drain pad.

AON7436 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):: 20 V

Current - Continuous Drain (Id) @ 25°C:: 9A (Ta), 23A (Tc)

Drive Voltage (Max Rds On, Min Rds On):: 1.8V, 10V

Rds On (Max) @ Id, Vgs:: 19mOhm @ 9A, 10V

Vgs(th) (Max) @ Id:: 1.1V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 15 nC @ 10 V

Vgs (Max):: ±12V

Input Capacitance (Ciss) (Max) @ Vds:: 630 pF @ 10 V

FET Feature:: -

Power Dissipation (Max):: 3.1W (Ta), 16.7W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

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

AON7436 FAQ

1.How can I place an order for AON7436 through Aetrix?

Please submit a Request for Quotation (RFQ) for AON7436 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 AON7436 reliable?

The price and inventory of AON7436 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AON7436 is usually 5 days.

3.What payment methods are accepted for AON7436?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AON7436 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AON7436?

AON7436 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AON7436 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 AON7436?

For technical support, including AON7436 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AON7436 requirements.

6.How does Aetrix verify that AON7436 is sourced from the original manufacturer or authorized distributors?

All AON7436 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 AON7436 meets industry standards.

7.What is the process for return or replacement of AON7436?

All AON7436 units undergo pre-shipment inspection (PSI). If there is an issue with AON7436, 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 AON7436 part is unused and in its original packaging.

Return procedure for AON7436:

1.Submit a request within 90 days.

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

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