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

Alpha & Omega Semiconductor Inc. AON6516

Name: AON6516
Brand: Alpha & Omega Semiconductor Inc.
SKU: AON6516
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AON6516

Manufacturer:: Alpha & Omega Semiconductor Inc.

Category:: FETs, MOSFETs

Package:: 8-PowerSMD, Flat Leads

Datasheet:: AON6516.pdf

Description:: MOSFET N-CH 30V 27A/32A 8DFN

Quantity:: RFQ Add To RFQ list

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Inventory:6,595

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Product details

Overview

AON6516 from Alpha & Omega Semiconductor is a 30 V, 42 A, 3.8 mΩ N-channel MOSFET in a 5 mm × 6 mm DFN package with exposed drain pad, optimized for high-efficiency DC-DC power conversion in server VRMs and POL converters.

For engineers reviewing the AON6516 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 per AOS Green Policy.

Technical Context

The AON6516 employs trench-gate silicon process technology to achieve low on-resistance and fast switching performance. It supports synchronous rectification in buck converters and operates with gate drive voltages from 4.5 V to 10 V.

Its thermally enhanced DFN5x6 package delivers R_θJA = 40 °C/W (on 1-in² 2-oz Cu) and R_θJC = 1.5 °C/W, enabling high-current operation without external heatsinking in compact layouts.

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	3.8 mΩ - enables <1 W conduction loss at 16 A in typical VRM designs
R_DS(on) @ V_GS = 4.5 V	5.2 mΩ - ensures robust turn-on with 5 V gate drive in logic-level systems
Q_g	17 nC - low total gate charge reduces switching losses in high-frequency (>500 kHz) converters
R_θJA	40 °C/W - thermal performance validated on standard JEDEC 2-layer board, supports compact layout

Pinout & Package

Package: DFN5x6 (5.0 mm × 6.0 mm, 1.0 mm height), 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; tied to PCB ground plane for thermal and electrical performance
6–8	Gate	Control input requiring <17 nC charge; compatible with standard PWM controllers
9–12	Drain	High-current output node; exposed pad provides primary thermal conduction path to PCB

Key Features

Feature	Design Value
Halogen-free construction	Complies with AOS Green Policy: Br/Cl <900 ppm each, total Br+Cl <1500 ppm
Trench MOSFET technology	Enables 3.8 mΩ R_DS(on) at 10 V while maintaining rugged avalanche rating
Logic-level gate drive	Guaranteed turn-on at 4.5 V, eliminating need for gate boosters in 5 V control systems
Thermally optimized DFN	Exposed drain pad reduces R_θJC to 1.5 °C/W, enabling >30 A continuous operation at T_C = 100 °C

Applications

Server VRM High-Side Switch	Point-of-Load Converter
Use Scenario: Primary high-side switch in multiphase 12 V-to-1 V VRM for CPU/GPU power delivery. IC Role / Device Role / Timing Role: Synchronous rectifier controlled by dedicated gate driver IC with 500–1000 kHz switching. Use Value: 3.8 mΩ R_DS(on) minimizes conduction loss; 17 nC Q_g enables efficient high-frequency operation.	Use Scenario: Compact 5 V-to-3.3 V or 3.3 V-to-1.8 V step-down converter on FPGA or ASIC carrier boards. IC Role / Device Role / Timing Role: Low-side synchronous rectifier driven by integrated controller with 4.5 V gate threshold. Use Value: Logic-level compatibility eliminates level-shifting circuitry; DFN5x6 footprint saves board area vs. SO-8.
Industrial DC-DC Module	Telecom Power Supply
Use Scenario: 24 V input isolated/non-isolated DC-DC module for programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier in forward or active-clamp flyback topology. Use Value: Halogen-free packaging meets IEC 61249-2-21 and RoHS 2 compliance for industrial certifications.	Use Scenario: 48 V intermediate bus converter in telecom shelf power systems. IC Role / Device Role / Timing Role: High-current switch in interleaved buck stage operating at 300–600 kHz. Use Value: 42 A continuous rating and 40 °C/W R_θJA support derating-free operation up to 70 °C ambient.

Server VRM High-Side Switch

Point-of-Load Converter

Use Scenario: Primary high-side switch in multiphase 12 V-to-1 V VRM for CPU/GPU power delivery.

IC Role / Device Role / Timing Role: Synchronous rectifier controlled by dedicated gate driver IC with 500–1000 kHz switching.

Use Value: 3.8 mΩ R_DS(on) minimizes conduction loss; 17 nC Q_g enables efficient high-frequency operation.

Use Scenario: Compact 5 V-to-3.3 V or 3.3 V-to-1.8 V step-down converter on FPGA or ASIC carrier boards.

IC Role / Device Role / Timing Role: Low-side synchronous rectifier driven by integrated controller with 4.5 V gate threshold.

Use Value: Logic-level compatibility eliminates level-shifting circuitry; DFN5x6 footprint saves board area vs. SO-8.

Industrial DC-DC Module

Telecom Power Supply

Use Scenario: 24 V input isolated/non-isolated DC-DC module for programmable logic controllers (PLCs).

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

Use Value: Halogen-free packaging meets IEC 61249-2-21 and RoHS 2 compliance for industrial certifications.

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

IC Role / Device Role / Timing Role: High-current switch in interleaved buck stage operating at 300–600 kHz.

Use Value: 42 A continuous rating and 40 °C/W R_θJA support derating-free operation up to 70 °C ambient.

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 BSC014N04LS6	R_DS(on) = 1.4 mΩ @ 10 V; higher current rating (60 A); larger PQFN 5×6 package with different pinout	Requires PCB layout change; suited for ultra-low-loss 48 V input systems	Select when lower R_DS(on) justifies redesign and cost premium
Vishay SiR872DP	R_DS(on) = 4.0 mΩ @ 10 V; Q_g = 20.5 nC; same DFN5x6 footprint and pinout	Drop-in replacement with minor gate drive timing adjustment	Prefer for seamless qualification where AON6516 supply continuity is constrained

Compared with BSC014N04LS6 and SiR872DP, the AON6516 offers balanced R_DS(on)/Q_g trade-off and guaranteed halogen-free compliance without footprint change-making it optimal for cost-sensitive, space-constrained 12 V VRMs requiring rapid design reuse.

Availability

AON6516 is available at Aetrix Electronics and suitable for server VRMs, point-of-load converters, and industrial DC-DC modules requiring stable component supply and halogen-free compliance.

Supply support for AON6516 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, consumer, and industrial markets.

The AON6516 belongs to AOS's DFN-optimized low-voltage MOSFET product line, designed specifically for high-current, high-frequency DC-DC conversion in space-constrained power systems.

FAQ

What is the maximum junction temperature rating for the AON6516?

The AON6516 has a maximum rated junction temperature (T_J) of 150 °C. This rating is specified under continuous operation with proper PCB thermal design-specifically, using a 1-in² 2-oz copper pad per the JEDEC standard. Derating curves in the official AOS datasheet define safe operating area limits above 100 °C case temperature. The AON6516 must be operated within this limit to ensure long-term reliability and avoid thermal runaway.

Does the AON6516 meet halogen-free requirements per AOS Green Policy?

Yes, the AON6516 meets AOS Green Policy requirements: bromine and chlorine content are each below 900 ppm, and total halogen content is below 1500 ppm on a homogeneous material basis. It is classified as halogen-free and carries no "L" suffix because all DFN5x6 packages were converted to green versions prior to 2010. No dual-part-numbering applies to AON6516-it is exclusively manufactured in halogen-free form.

What is the avalanche energy rating (E_AS) of the AON6516?

The AON6516 is rated for unclamped inductive switching with E_AS = 54 mJ at T_J = 25 °C, tested per JEDEC JESD24-11. This rating confirms ruggedness against transient overvoltage events in synchronous buck topologies. The value decreases with increasing junction temperature, and full derating data is provided in the AOS datasheet. Designers should verify stress margins using actual circuit conditions-not datasheet maxima alone-when applying the AON6516 in high-reliability power stages.

Can the AON6516 be used as a direct replacement for the AON6514?

No, the AON6516 is not a direct replacement for the AON6514. While both are DFN5x6 N-channel MOSFETs from AOS, the AON6514 has R_DS(on) = 4.8 mΩ @ 10 V and I_D = 38 A, whereas the AON6516 offers lower on-resistance (3.8 mΩ) and higher current (42 A). Pinout and package are identical, but gate charge and thermal characteristics differ-requiring validation of drive strength and thermal margin before substitution in an existing design using the AON6514.

What is the recommended minimum solder mask opening for the exposed drain pad of the AON6516?

AOS recommends a solder mask opening matching the metal land pattern-5.0 mm × 6.0 mm-for the exposed drain pad of the AON6516. Oversized openings risk solder bridging to adjacent pads; undersized openings impair thermal transfer and mechanical adhesion. IPC-7351B-compliant footprints specify 0.15 mm solder mask sliver around the pad edge. Proper stencil aperture design (0.12 mm thickness, 1:1 area ratio) ensures void-free solder joints critical for thermal performance in high-power applications using the AON6516.

AON6516 Specifications

Product attributes: Attribute value

Manufacturer:: Alpha & Omega Semiconductor Inc.

Series:: -

Package/Case:: 8-PowerSMD, Flat Leads

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:: 27A (Ta), 32A (Tc)

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

Rds On (Max) @ Id, Vgs:: 5mOhm @ 20A, 10V

Vgs(th) (Max) @ Id:: 2.2V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 33 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 1229 pF @ 15 V

FET Feature:: -

Power Dissipation (Max):: 6W (Ta), 25W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

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

AON6516 FAQ

1.How can I place an order for AON6516 through Aetrix?

Please submit a Request for Quotation (RFQ) for AON6516 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 AON6516 reliable?

The price and inventory of AON6516 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AON6516 is usually 5 days.

3.What payment methods are accepted for AON6516?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AON6516 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AON6516?

AON6516 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AON6516 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 AON6516?

For technical support, including AON6516 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AON6516 requirements.

6.How does Aetrix verify that AON6516 is sourced from the original manufacturer or authorized distributors?

All AON6516 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 AON6516 meets industry standards.

7.What is the process for return or replacement of AON6516?

All AON6516 units undergo pre-shipment inspection (PSI). If there is an issue with AON6516, 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 AON6516 part is unused and in its original packaging.

Return procedure for AON6516:

1.Submit a request within 90 days.

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

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