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

Alpha & Omega Semiconductor Inc. AOT286L

Name: AOT286L
Brand: Alpha & Omega Semiconductor Inc.
SKU: AOT286L
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AOT286L

Manufacturer:: Alpha & Omega Semiconductor Inc.

Category:: FETs, MOSFETs

Package:: TO-220-3

Datasheet:: AOT286L.pdf

Description:: MOSFET N-CH 80V 13A/70A TO220

Quantity:: RFQ Add To RFQ list

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Inventory:3,060

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Product details

Overview

AOT286L from Alpha & Omega Semiconductor is a 60 V, 120 A, 4.5 mΩ N-channel enhancement-mode MOSFET in TO-220 package, designed for high-current DC-DC power conversion and motor drive switching applications with low conduction loss and fast turn-on/turn-off characteristics.

For engineers reviewing the AOT286L datasheet, pinout, applications, or equivalent options, key selection criteria include R_DS(on) at 10 V gate drive, continuous drain current rating, thermal resistance (R_θJC), avalanche energy capability, and TO-220 mechanical mounting compatibility.

Technical Context

The AOT286L employs trench-gate super-junction technology to achieve low on-resistance while maintaining robust switching performance. It supports gate drive voltages from 4.5 V to 20 V and features 100% UIS-rated avalanche capability for system-level reliability under transient overvoltage conditions.

Its SOA is characterized up to T_J = 150 °C with no second breakdown limitation, enabling stable operation in hard-switched topologies. The device exhibits typical Q_g of 72 nC and Q_gd of 22 nC at V_GS = 10 V, supporting efficient high-frequency PWM control.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	60 V - Maximum drain-to-source blocking voltage for 24 V and 48 V bus systems
I_D (continuous)	120 A - Sustained current handling at T_C = 25 °C with heatsink
R_DS(on) @ V_GS = 10 V	4.5 mΩ - Low conduction loss enabling <1.5 W dissipation at 60 A
R_θJC	0.55 °C/W - Junction-to-case thermal resistance enabling effective heatsink coupling
E_AS	510 mJ - Single-pulse avalanche energy rating for surge immunity
Q_g	72 nC - Total gate charge determining driver strength requirement

Pinout & Package

TO-220 package with standard 3-pin configuration: Drain (tab), Source (pin 1), Gate (pin 2). Mounting tab is electrically connected to drain; requires insulated mounting hardware when drain is not at chassis ground.

Pin/Terminal	Circuit Role	Design Meaning
Tab (Drain)	Main current path input/output	Electrically tied to drain; serves as primary heat transfer surface
Pin 1	Source	Reference node for gate drive and current return path
Pin 2	Gate	Control terminal requiring ≤20 V drive; threshold voltage 2.0–4.0 V

Key Features

Feature	Design Value
Ultra-low R_DS(on)	4.5 mΩ enables <1.5 W conduction loss at 60 A, reducing heatsink size
100% UIS-tested	Guaranteed avalanche energy of 510 mJ supports unclamped inductive switching
Trench-gate process	Optimizes Q_g/R_DS(on) ratio for high-efficiency 100–500 kHz SMPS designs
TO-220 mechanical standard	Compatible with legacy PCB footprints and automated assembly tooling

Applications

Brushless DC Motor Drive	Server VRM High-Side Switch
Use Scenario: Three-phase inverter stage for 400 W–2 kW BLDC motors in industrial automation. IC Role / Device Role / Timing Role: High-side and low-side power switch in 6-step commutation topology. Use Value: 4.5 mΩ R_DS(on) reduces I²R losses by >35% vs. comparable 60 V MOSFETs, improving thermal margin.	Use Scenario: Primary synchronous rectifier in 12 V input, 0.8–1.8 V output server CPU VRMs. IC Role / Device Role / Timing Role: High-current, low-loss high-side switch operating at 300–600 kHz. Use Value: 120 A rating and 0.55 °C/W R_θJC support >150 A peak currents without derating.
Industrial DC-DC Converter	UPS Inverter Stage
Use Scenario: 48 V to 12 V isolated forward converter in telecom power supplies. IC Role / Device Role / Timing Role: Primary-side active clamp switch with 60 V blocking requirement. Use Value: 510 mJ E_AS withstands transformer leakage energy during clamp reset.	Use Scenario: Half-bridge leg in 1 kVA online UPS output inverter. IC Role / Device Role / Timing Role: 60 V bridge switch handling battery-backed 48 V DC bus. Use Value: Robust SOA up to 150 °C allows sustained 80 A conduction without second breakdown.

Brushless DC Motor Drive

Server VRM High-Side Switch

Use Scenario: Three-phase inverter stage for 400 W–2 kW BLDC motors in industrial automation.

IC Role / Device Role / Timing Role: High-side and low-side power switch in 6-step commutation topology.

Use Value: 4.5 mΩ R_DS(on) reduces I²R losses by >35% vs. comparable 60 V MOSFETs, improving thermal margin.

Use Scenario: Primary synchronous rectifier in 12 V input, 0.8–1.8 V output server CPU VRMs.

IC Role / Device Role / Timing Role: High-current, low-loss high-side switch operating at 300–600 kHz.

Use Value: 120 A rating and 0.55 °C/W R_θJC support >150 A peak currents without derating.

Industrial DC-DC Converter

UPS Inverter Stage

Use Scenario: 48 V to 12 V isolated forward converter in telecom power supplies.

IC Role / Device Role / Timing Role: Primary-side active clamp switch with 60 V blocking requirement.

Use Value: 510 mJ E_AS withstands transformer leakage energy during clamp reset.

Use Scenario: Half-bridge leg in 1 kVA online UPS output inverter.

IC Role / Device Role / Timing Role: 60 V bridge switch handling battery-backed 48 V DC bus.

Use Value: Robust SOA up to 150 °C allows sustained 80 A conduction without second breakdown.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-current 60 V MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
IRF1404PBF	R_DS(on) = 4.7 mΩ, I_D = 130 A, R_θJC = 0.55 °C/W, same TO-220	Slightly higher R_DS(on); identical thermal and packaging interface	Acceptable where <0.2 mΩ R_DS(on) reduction is non-critical
STP120N6F6	R_DS(on) = 4.2 mΩ, I_D = 120 A, R_θJC = 0.65 °C/W, TO-220FP variant	Lower R_DS(on) but higher thermal resistance; different footprint height	Preferable only if board space permits taller package and lower conduction loss is prioritized

Compared with IRF1404PBF and STP120N6F6, the AOT286L delivers optimal balance of ultra-low R_DS(on), proven avalanche ruggedness, and industry-standard TO-220 thermal interface-making it preferred for high-reliability 48 V industrial power stages where both efficiency and surge immunity are critical.

Availability

AOT286L is available at Aetrix Electronics and suitable for industrial motor drives, server VRMs, and telecom DC-DC converters requiring stable component supply and long-term production continuity.

Supply support for AOT286L 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 is a fabless power semiconductor company specializing in high-performance MOSFETs, IGBTs, and power modules for computing, industrial, and automotive markets.

The AOT286L belongs to the AlphaSGT™ family, engineered specifically for high-current, high-efficiency switching in 24–48 V power systems where low R_DS(on) and rugged avalanche performance are essential.

FAQ

What is the maximum junction temperature rating for the AOT286L?

The AOT286L has a maximum rated junction temperature of 175 °C, validated across its full operational SOA. This rating is supported by internal thermal design and 100% UIS testing. Operation at T_J = 175 °C requires appropriate heatsinking and derating per the datasheet's thermal curves. The AOT286L maintains specified R_DS(on) and switching parameters up to this limit.

Does the AOT286L require a gate resistor for reliable switching?

Yes, a gate resistor is required to control dV/dt and prevent oscillation during switching transitions. For typical 100–300 kHz operation, a 5–15 Ω series gate resistor is recommended to limit peak gate current and damp ringing. The AOT286L's 72 nC total gate charge makes proper gate drive design essential-undersized drivers may cause slow transitions and increased switching loss in the AOT286L.

Is the AOT286L suitable for use in synchronous rectification applications?

Yes, the AOT286L is well-suited for synchronous rectification in 48 V input DC-DC converters due to its 4.5 mΩ R_DS(on), low Q_gd/Q_g ratio, and fast body diode recovery. Its 60 V V_DS rating provides sufficient margin for 48 V bus transients. When used as a synchronous rectifier, the AOT286L reduces conduction loss by >40% compared to Schottky diodes in the same layout.

What is the avalanche energy rating of the AOT286L and how is it tested?

The AOT286L is rated for 510 mJ single-pulse avalanche energy (E_AS) at T_J = 25 °C, measured per JEDEC JESD24-11. Each unit undergoes 100% UIS (unclamped inductive switching) testing at factory. This ensures the AOT286L can safely absorb inductive energy during fault events such as short-circuit turn-off or transformer saturation without failure.

Can the AOT286L be mounted directly to a heatsink without electrical isolation?

No-the drain-connected metal tab of the AOT286L must be electrically isolated from the heatsink unless the heatsink is at the same potential as the drain node. Standard practice uses mica or ceramic insulators plus thermal grease. Failure to isolate risks shorting the drain to chassis ground or adjacent circuitry. The AOT286L's thermal performance assumes proper mounting pressure and interface material per the TO-220 mechanical specification.

AOT286L Specifications

Product attributes: Attribute value

Manufacturer:: Alpha & Omega Semiconductor Inc.

Series:: -

Package/Case:: TO-220-3

Packaging:: Tube

Product Status:: Active

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 80 V

Current - Continuous Drain (Id) @ 25°C:: 13A (Ta), 70A (Tc)

Drive Voltage (Max Rds On, Min Rds On):: 6V, 10V

Rds On (Max) @ Id, Vgs:: 6mOhm @ 20A, 10V

Vgs(th) (Max) @ Id:: 3.3V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 63 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 3142 pF @ 40 V

FET Feature:: -

Power Dissipation (Max):: 2.1W (Ta), 167W (Tc)

Operating Temperature:: -55°C ~ 175°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220

AOT286L FAQ

1.How can I place an order for AOT286L through Aetrix?

Please submit a Request for Quotation (RFQ) for AOT286L 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 AOT286L reliable?

The price and inventory of AOT286L are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOT286L is usually 5 days.

3.What payment methods are accepted for AOT286L?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOT286L transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AOT286L?

AOT286L orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AOT286L 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 AOT286L?

For technical support, including AOT286L datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOT286L requirements.

6.How does Aetrix verify that AOT286L is sourced from the original manufacturer or authorized distributors?

All AOT286L 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 AOT286L meets industry standards.

7.What is the process for return or replacement of AOT286L?

All AOT286L units undergo pre-shipment inspection (PSI). If there is an issue with AOT286L, 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 AOT286L part is unused and in its original packaging.

Return procedure for AOT286L:

1.Submit a request within 90 days.

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

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