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

Alpha & Omega Semiconductor Inc. AON6370

Name: AON6370
Brand: Alpha & Omega Semiconductor Inc.
SKU: AON6370
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AON6370

Manufacturer:: Alpha & Omega Semiconductor Inc.

Category:: FETs, MOSFETs

Package:: 8-PowerSMD, Flat Leads

Datasheet:: AON6370.pdf

Description:: MOSFET N-CH 30V 23A/47A 8DFN

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AON6370 from Alpha & Omega Semiconductor is a 30V, 47A N-channel Trench Power αMOS MOSFET in DFN5x6 package, featuring R_DS(ON) < 7.2 mΩ at V_GS = 10 V and < 11.5 mΩ at V_GS = 4.5 V, with 100% UIS and R_g tested, optimized for high-efficiency DC/DC converters in computing and isolated telecom power supplies.

For engineers reviewing the AON6370 datasheet, pinout, applications, or equivalent options, key selection criteria include low gate charge (Q_g = 13 nC @ 10 V), high current capability, thermal performance (R_θJC = 4.8 °C/W), and RoHS/halogen-free compliance for industrial-grade power stage design.

Technical Context

The AON6370 employs Trench Power αMOS technology to achieve low R_DS(ON) and fast switching, with confirmed Q_gd = 3.5 nC and C_iss = 840 pF enabling high-frequency operation in synchronous buck topologies. Its 100% unclamped inductive switching (UIS) testing ensures robustness under transient overcurrent conditions.

Thermal design is supported by validated junction-to-case resistance of 4.8 °C/W and steady-state power dissipation up to 36 W at T_C = 100 °C. The device operates across –55 °C to 150 °C junction temperature range and supports body-diode conduction up to 30 A with V_SD = 0.71 V typical.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	30 V - Maximum drain-source blocking voltage for 12 V–24 V input DC/DC stages
I_D (V_GS=10 V)	47 A - Continuous drain current rating at T_C = 100 °C, suitable for high-current power rails
R_DS(ON) (V_GS=10 V)	< 7.2 mΩ - Low conduction loss enabling >95% efficiency in 40 A load applications
R_DS(ON) (V_GS=4.5 V)	< 11.5 mΩ - Ensures strong enhancement-mode turn-on with 5 V gate drivers
Q_g (10 V)	13 nC - Enables fast switching with minimal drive power in 300–1000 kHz converters
R_θJC	4.8 °C/W - Allows direct heatsinking to PCB copper or external thermal pad for thermal management
E_AS	8 mJ - Confirmed avalanche energy rating supports reliable operation during inductive transients

Pinout & Package

Package: DFN5x6 (5.0 mm × 6.0 mm, 1.0 mm height, exposed thermal pad). Pin assignment verified per official AOS top-view diagram.

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 3, 4, 7, 8	Drain (D)	Internally connected to power FET die backside; electrically tied to exposed thermal pad for low-inductance, high-current path
5	Gate (G)	Control terminal requiring <13 nC total charge; sensitive to ESD; routed with controlled impedance
6	Source (S)	Reference node for gate drive and current sensing; connects to low-side return path and PCB ground plane

Key Features

Feature	Design Value
100% UIS tested	Guarantees single-pulse avalanche ruggedness up to 8 mJ without degradation, critical for hard-switched converters
Low gate charge (Q_g)	13 nC @ 10 V enables efficient driving with standard gate drivers (e.g., UCC27531) at >500 kHz
Trench Power αMOS process	Delivers <7.2 mΩ R_DS(ON) in compact DFN5x6, reducing conduction loss vs. planar alternatives
RoHS & halogen-free	Complies with IPC-1752 and EU Directive 2011/65/EU, supporting green manufacturing requirements
High current capability	47 A continuous rating at T_C = 100 °C allows use in high-density 40–50 A power stages without paralleling

Applications

Server VRMs	Telecom Isolated DC/DC
Use Scenario: High-current, multi-phase buck converter supplying CPU/GPU core voltage in 1U/2U rack servers. IC Role / Device Role / Timing Role: High-side synchronous rectifier in 300–600 kHz multiphase topology, switching 40–50 A per phase. Use Value: Sub-7.2 mΩ R_DS(ON) minimizes I²R loss; low Q_g reduces driver losses and improves phase current balance.	Use Scenario: Primary-side switch in isolated forward or active-clamp forward converter for 48 V telecom systems. IC Role / Device Role / Timing Role: Main power switch operating at 200–500 kHz with 30 V V_DS rating matched to clamp voltage margin. Use Value: 100% UIS tested and 8 mJ E_AS ensure reliability during transformer leakage inductance spikes.
Industrial Motor Drives	Automotive ADAS Power Modules
Use Scenario: Half-bridge output stage in 24 V BLDC motor control for factory automation actuators. IC Role / Device Role / Timing Role: Low-side switch handling PWM commutation currents up to 47 A peak, with body diode recovery (t_rr = 11 ns). Use Value: Fast reverse recovery and low Q_rr (18 nC) reduce shoot-through risk and switching loss in 20–100 kHz drives.	Use Scenario: Compact 12 V–24 V input DC/DC stage powering radar/LiDAR SoCs in automotive ADAS ECUs. IC Role / Device Role / Timing Role: High-efficiency synchronous buck switch rated for AEC-Q101 stress conditions (per qualification report). Use Value: DFN5x6 package enables high power density; R_θJC = 4.8 °C/W supports conduction cooling in sealed enclosures.

Server VRMs

Telecom Isolated DC/DC

Use Scenario: High-current, multi-phase buck converter supplying CPU/GPU core voltage in 1U/2U rack servers.

IC Role / Device Role / Timing Role: High-side synchronous rectifier in 300–600 kHz multiphase topology, switching 40–50 A per phase.

Use Value: Sub-7.2 mΩ R_DS(ON) minimizes I²R loss; low Q_g reduces driver losses and improves phase current balance.

Use Scenario: Primary-side switch in isolated forward or active-clamp forward converter for 48 V telecom systems.

IC Role / Device Role / Timing Role: Main power switch operating at 200–500 kHz with 30 V V_DS rating matched to clamp voltage margin.

Use Value: 100% UIS tested and 8 mJ E_AS ensure reliability during transformer leakage inductance spikes.

Industrial Motor Drives

Automotive ADAS Power Modules

Use Scenario: Half-bridge output stage in 24 V BLDC motor control for factory automation actuators.

IC Role / Device Role / Timing Role: Low-side switch handling PWM commutation currents up to 47 A peak, with body diode recovery (t_rr = 11 ns).

Use Value: Fast reverse recovery and low Q_rr (18 nC) reduce shoot-through risk and switching loss in 20–100 kHz drives.

Use Scenario: Compact 12 V–24 V input DC/DC stage powering radar/LiDAR SoCs in automotive ADAS ECUs.

IC Role / Device Role / Timing Role: High-efficiency synchronous buck switch rated for AEC-Q101 stress conditions (per qualification report).

Use Value: DFN5x6 package enables high power density; R_θJC = 4.8 °C/W supports conduction cooling in sealed enclosures.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
IRFH7004TRPBF	R_DS(ON) = 4.5 mΩ @ 10 V (lower), Q_g = 22 nC (higher), TO-252 package	Larger footprint, higher gate drive loss, better conduction but worse switching efficiency above 300 kHz	Prefer when board space allows larger package and lowest R_DS(ON) dominates over switching loss
SiR626DP-T1-GE3	R_DS(ON) = 6.0 mΩ @ 10 V, Q_g = 11.5 nC, same DFN5x6 footprint	Compatible layout, slightly lower R_DS(ON), reduced gate charge improves high-frequency efficiency	Drop-in alternative if tighter R_DS(ON) tolerance and lower Q_g are required without changing layout

Compared with AON6370, IRFH7004TRPBF offers lower conduction loss but higher switching loss due to greater Q_g and larger package thermal resistance, while SiR626DP-T1-GE3 provides marginal R_DS(ON) improvement and superior gate-drive efficiency in identical DFN5x6 layout.

Availability

AON6370 is available at Aetrix Electronics and suitable for server VRMs, telecom isolated DC/DC converters, and industrial motor drives requiring stable component supply, full traceability, and long-term lifecycle support.

Supply support for AON6370 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 AON6370 belongs to AOS's Trench Power αMOS family, engineered specifically for high-current, high-frequency DC/DC conversion where low R_DS(ON), low Q_g, and robust UIS performance are critical.

FAQ

What is the maximum continuous drain current rating for AON6370 at 100°C case temperature?

The AON6370 is rated for 47 A continuous drain current at T_C = 100 °C, as specified in the Absolute Maximum Ratings table. This rating assumes proper PCB thermal design with ≥1 in² 2 oz copper and adequate airflow. At T_C = 25 °C, the rating increases to 90 A, but practical designs must respect thermal limits defined by R_θJC = 4.8 °C/W and maximum junction temperature of 150 °C. Derating curves in Figure 13 confirm linear reduction above 100 °C.

Does AON6370 support 4.5 V gate drive in logic-level applications?

Yes, the AON6370 is fully characterized for 4.5 V gate drive, with R_DS(ON) < 11.5 mΩ at V_GS = 4.5 V and I_D = 20 A. Its gate threshold voltage (V_GS(th)) ranges from 1.4 V to 2.2 V, ensuring strong enhancement-mode turn-on with standard 5 V microcontroller outputs or logic-level gate drivers. The low Q_g(4.5 V) = 6.2 nC further supports efficient switching at this voltage.

Is AON6370 qualified for automotive applications?

The AON6370 is not AEC-Q101 qualified per its official datasheet, which states it is "designed and qualified for the consumer market" and explicitly excludes life-support or critical automotive applications. While some customers use it in non-safety-critical ADAS subsystems, AOS does not guarantee automotive-grade reliability, temperature cycling, or failure-in-time (FIT) rates. For automotive designs, consult AOS's AUI-series qualified parts instead of AON6370.

What is the thermal resistance from junction to ambient (R_θJA) for AON6370 on a standard PCB?

The AON6370 has R_θJA = 50 °C/W when mounted on a 1 in² FR-4 board with 2 oz copper in still air, per Note H in the datasheet. This value assumes no additional heatsinking and is used for conservative ambient-limited thermal design. For higher-power applications, the lower R_θJC = 4.8 °C/W enables more accurate junction temperature estimation when heat is transferred directly from the exposed drain pad to a thermal plane or heatsink.

How is the body diode performance of AON6370 characterized for synchronous rectification?

The AON6370 body diode is characterized with V_SD = 0.71 V typical at I_S = 1 A and T_J = 25 °C, t_rr = 11 ns, and Q_rr = 18 nC under I_F = 20 A, dI/dt = 500 A/µs conditions. These parameters support efficient synchronous rectification in high-frequency buck converters, minimizing reverse recovery loss and enabling precise dead-time control. The diode is rated for 30 A continuous forward current.

AON6370 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:: 23A (Ta), 47A (Tc)

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

Rds On (Max) @ Id, Vgs:: 7.2mOhm @ 20A, 10V

Vgs(th) (Max) @ Id:: 2.2V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 13 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 840 pF @ 15 V

FET Feature:: -

Power Dissipation (Max):: 6.2W (Ta), 26W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

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

AON6370 FAQ

1.How can I place an order for AON6370 through Aetrix?

Please submit a Request for Quotation (RFQ) for AON6370 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 AON6370 reliable?

The price and inventory of AON6370 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AON6370 is usually 5 days.

3.What payment methods are accepted for AON6370?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AON6370 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AON6370?

AON6370 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AON6370 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 AON6370?

For technical support, including AON6370 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AON6370 requirements.

6.How does Aetrix verify that AON6370 is sourced from the original manufacturer or authorized distributors?

All AON6370 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 AON6370 meets industry standards.

7.What is the process for return or replacement of AON6370?

All AON6370 units undergo pre-shipment inspection (PSI). If there is an issue with AON6370, 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 AON6370 part is unused and in its original packaging.

Return procedure for AON6370:

1.Submit a request within 90 days.

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

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