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

Alpha & Omega Semiconductor Inc. AOTF286L

Name: AOTF286L
Brand: Alpha & Omega Semiconductor Inc.
SKU: AOTF286L
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AOTF286L

Manufacturer:: Alpha & Omega Semiconductor Inc.

Category:: FETs, MOSFETs

Package:: TO-220-3 Full Pack

Datasheet:: AOTF286L.pdf

Description:: MOSFET N-CH 80V 13.5A/56A TO220

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Inventory:2,270

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Product details

Overview

AOTF286L from Alpha & Omega Semiconductor is an 80V, 56A N-channel Trench Power MV MOSFET in TO-220F package, featuring R_DS(ON) < 6 mΩ at V_GS = 10 V and Q_g = 44.5–63 nC, optimized for synchronous rectification in high-efficiency DC/DC converters.

For engineers reviewing the AOTF286L datasheet, pinout, applications, or equivalent options, key selection criteria include unclamped inductive switching (UIS) rating, body-diode reverse recovery performance (t_rr = 29 ns, Q_rr = 161 nC), gate charge profile, thermal resistance (R_θJC = 4.0 °C/W), and 100% R_g testing.

Technical Context

The AOTF286L employs Trench Power MV MOSFET technology to achieve low conduction loss and fast switching. Its gate threshold voltage (2.3–3.3 V) enables robust drive compatibility with 5 V and 10 V logic, while low C_iss (3142 pF) and Cr_ss (43 pF) support high-frequency operation up to several hundred kHz.

Designed for hard-switched topologies, it delivers 100% UIS-tested ruggedness (E_AS = 125 mJ, L = 0.1 mH) and features a low forward-voltage body diode (V_SD = 0.7–1.0 V at I_S = 1 A), critical for bidirectional current handling in synchronous buck and LLC resonant converters.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	80 V - Maximum blocking voltage compatible with 48 V input bus systems and industrial 24–60 V rails.
I_D (V_GS = 10 V)	56 A - Continuous drain current enabling high-power output stages without parallel devices.
R_DS(ON) (V_GS = 10 V)	< 6 mΩ - Reduces conduction loss to ≤ 18.8 W at 56 A, improving efficiency in high-current synchronous rectifiers.
Q_g (10 V)	44.5–63 nC - Enables efficient gate driving with moderate gate driver ICs (e.g., UCC27531) at 300–500 kHz.
t_rr / Q_rr	29 ns / 161 nC - Minimizes body-diode switching loss and EMI during dead-time conduction in half-bridge configurations.
R_θJC	4.0 °C/W - Supports ≥18.5 W power dissipation with minimal heatsink when mounted on copper-clad PCB or heatsink.
E_AS	125 mJ - Confirmed single-pulse avalanche energy ensures reliability under transient overvoltage conditions.

Pinout & Package

Package: TO-220F (full-pack, insulated tab), thermally enhanced plastic housing with isolated drain pad. Mounting requires mechanical isolation and thermal interface material for optimal heat transfer to heatsink.

Pin/Terminal	Circuit Role	Design Meaning
G (Gate)	Control terminal	Receives PWM signal; low input capacitance (C_iss = 3142 pF) reduces driver loading.
D (Drain)	High-side switch node	Connected to input rail or transformer secondary; electrically isolated from tab in TO-220F package.
S (Source)	Power return / reference node	Common connection point for gate driver return, current sensing, and low-side reference; ties to ground or phase node.

Key Features

Feature	Design Value
100% UIS tested	Guarantees avalanche ruggedness (E_AS = 125 mJ) without derating, eliminating need for external snubbers in flyback or boost converters.
Low R_DS(ON) at 6 V drive	R_DS(ON) < 8 mΩ at V_GS = 6 V supports direct drive from microcontroller GPIO or low-voltage gate drivers.
Optimized switching parameters	t_D(on) = 13.5 ns, t_r = 11 ns, t_D(off) = 32 ns, t_f = 11 ns enable clean transitions with minimal overlap loss.
Body-diode characterization	V_SD = 0.7–1.0 V and t_rr = 29 ns ensure predictable reverse recovery behavior in synchronous rectifier mode.
100% R_g tested	Gate resistance (0.6–2.0 Ω) verified per unit ensures consistent turn-on/turn-off timing across production lots.

Applications

Server VRM Synchronous Rectifier	Industrial 48 V DC/DC Converter
Use Scenario: High-current, multiphase buck converter supplying CPU/GPU core voltage (0.8–1.2 V @ up to 300 A). IC Role / Device Role / Timing Role: Low-side synchronous rectifier replacing Schottky diodes to reduce conduction loss and improve efficiency above 90%. Use Value: R_DS(ON) < 6 mΩ minimizes I²R loss at 56 A, while fast t_rr prevents shoot-through during phase interleaving.	Use Scenario: Isolated 48 V-to-12 V DC/DC module for factory automation PLCs and motor control IO modules. IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier in forward or active-clamp forward topology operating at 200–350 kHz. Use Value: Low Q_g and Cr_ss reduce switching loss; TO-220F insulation allows safe mounting on metal chassis without additional isolation hardware.
Motor Drive Half-Bridge Leg	Telecom AC/DC Front-End PFC
Use Scenario: 3-phase inverter stage in 1–3 kW BLDC or servo drives using discrete half-bridge modules. IC Role / Device Role / Timing Role: High-current, high-ruggedness switching device in low-side position of half-bridge leg, handling regenerative braking currents. Use Value: 100% UIS testing and 225 A pulsed drain rating (I_DM) withstand repetitive inductive kickback without failure.	Use Scenario: Active clamp or synchronous rectifier in telecom-grade 3.3 kW AC/DC front-end with universal input (90–264 VAC). IC Role / Device Role / Timing Role: Auxiliary switch in active clamp circuit or secondary-side rectifier in LLC resonant converter stage. Use Value: 80 V V_DS rating matches 60 V-class bus designs; low C_oss (435 pF) enables zero-voltage switching (ZVS) extension.

Server VRM Synchronous Rectifier

Industrial 48 V DC/DC Converter

Use Scenario: High-current, multiphase buck converter supplying CPU/GPU core voltage (0.8–1.2 V @ up to 300 A).

IC Role / Device Role / Timing Role: Low-side synchronous rectifier replacing Schottky diodes to reduce conduction loss and improve efficiency above 90%.

Use Value: R_DS(ON) < 6 mΩ minimizes I²R loss at 56 A, while fast t_rr prevents shoot-through during phase interleaving.

Use Scenario: Isolated 48 V-to-12 V DC/DC module for factory automation PLCs and motor control IO modules.

IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier in forward or active-clamp forward topology operating at 200–350 kHz.

Use Value: Low Q_g and Cr_ss reduce switching loss; TO-220F insulation allows safe mounting on metal chassis without additional isolation hardware.

Motor Drive Half-Bridge Leg

Telecom AC/DC Front-End PFC

Use Scenario: 3-phase inverter stage in 1–3 kW BLDC or servo drives using discrete half-bridge modules.

IC Role / Device Role / Timing Role: High-current, high-ruggedness switching device in low-side position of half-bridge leg, handling regenerative braking currents.

Use Value: 100% UIS testing and 225 A pulsed drain rating (I_DM) withstand repetitive inductive kickback without failure.

Use Scenario: Active clamp or synchronous rectifier in telecom-grade 3.3 kW AC/DC front-end with universal input (90–264 VAC).

IC Role / Device Role / Timing Role: Auxiliary switch in active clamp circuit or secondary-side rectifier in LLC resonant converter stage.

Use Value: 80 V V_DS rating matches 60 V-class bus designs; low C_oss (435 pF) enables zero-voltage switching (ZVS) extension.

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
STP80NF55-08	80 V, 55 A, R_DS(ON) = 8.5 mΩ @ 10 V, Q_g = 120 nC, TO-220 package (non-isolated tab)	Higher gate charge increases driver loss; non-insulated tab requires isolation washer for heatsink mounting.	Prefer AOTF286L where lower Q_g and insulated package simplify layout and improve thermal margin.
IRF1404ZPBF	40 V, 202 A, R_DS(ON) = 3.8 mΩ @ 10 V, Q_g = 131 nC, TO-220 package	Lower voltage rating limits use to ≤24 V systems; higher current rating irrelevant for 80 V bus applications.	Select AOTF286L for 48–60 V input systems requiring precise 80 V breakdown margin and lower gate drive demand.

Compared with STP80NF55-08 and IRF1404ZPBF, the AOTF286L offers superior gate-drive efficiency (lower Q_g), certified avalanche ruggedness, and built-in electrical isolation-making it optimal for space-constrained, high-reliability 48 V industrial and telecom power supplies where thermal management and layout simplicity are critical.

Availability

AOTF286L is available at Aetrix Electronics and suitable for server VRMs, industrial 48 V DC/DC converters, motor drive half-bridge legs, and telecom AC/DC front-end PFC circuits requiring stable component supply and long-term manufacturability.

Supply support for AOTF286L 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, industrial, and automotive markets.

The AOTF286L belongs to AOS's Trench Power MV MOSFET product line, engineered specifically for high-efficiency, high-current synchronous rectification and hard-switched industrial power conversion where low R_DS(ON), fast switching, and avalanche ruggedness are mandatory.

FAQ

What is the maximum continuous drain current rating for AOTF286L at 100°C case temperature?

The AOTF286L supports 37.5 A continuous drain current (I_D) at T_C = 100°C, as specified in its Absolute Maximum Ratings table. This derated value reflects thermal limitations under sustained high-temperature operation and must be validated against actual board-level thermal design using R_θJC = 4.0 °C/W and ambient conditions. The full 56 A rating applies only at T_C = 25°C.

Does AOTF286L have an electrically isolated package, and how does that affect heatsink mounting?

Yes, the AOTF286L uses a TO-220F package with an electrically insulated drain pad, allowing direct mounting to a grounded metal heatsink without requiring insulating washers or pads. This simplifies thermal design, improves reliability by eliminating dielectric degradation risks, and reduces thermal resistance compared to standard TO-220 variants-critical for high-power density industrial and telecom power supplies using the AOTF286L.

What is the typical body-diode forward voltage of AOTF286L, and why does it matter in synchronous rectifier applications?

The AOTF286L exhibits a typical body-diode forward voltage (V_SD) of 0.7 V at I_S = 1 A and 25°C, rising to ~1.0 V at 125°C. In synchronous rectifier applications, this parameter determines conduction loss during dead-time intervals before the synchronous FET turns on. Lower V_SD directly reduces power loss and junction temperature rise, especially in high-frequency, high-duty-cycle topologies where body-diode conduction is unavoidable.

Can AOTF286L be driven directly from a 5 V microcontroller GPIO without a gate driver IC?

The AOTF286L has a gate threshold voltage (V_GS(th)) of 2.3–3.3 V, making it technically enhancable with 5 V logic. However, due to its 44.5–63 nC total gate charge and requirement for fast switching, driving it directly from a GPIO risks slow transitions, increased switching loss, and potential thermal runaway. A dedicated gate driver IC is strongly recommended for all production designs using the AOTF286L to ensure reliable, efficient operation.

Is AOTF286L qualified for automotive applications, and what is its stated qualification scope?

No, the AOTF286L is explicitly qualified only for the consumer market per its datasheet disclaimer. It is not AEC-Q101 qualified, nor approved for use in life-support, safety-critical, or automotive applications. The datasheet states: "THIS PRODUCT HAS BEEN DESIGNED AND QUALIFIED FOR THE CONSUMER MARKET. APPLICATIONS OR USES AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS ARE NOT AUTHORIZED." Customers requiring automotive-grade components must select alternatives with formal AEC-Q101 certification.

AOTF286L Specifications

Product attributes: Attribute value

Manufacturer:: Alpha & Omega Semiconductor Inc.

Series:: -

Package/Case:: TO-220-3 Full Pack

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:: 13.5A (Ta), 56A (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):: 2.2W (Ta), 37.5W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220F

AOTF286L FAQ

1.How can I place an order for AOTF286L through Aetrix?

Please submit a Request for Quotation (RFQ) for AOTF286L 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 AOTF286L reliable?

The price and inventory of AOTF286L are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOTF286L is usually 5 days.

3.What payment methods are accepted for AOTF286L?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOTF286L transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AOTF286L?

AOTF286L orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AOTF286L 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 AOTF286L?

For technical support, including AOTF286L datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOTF286L requirements.

6.How does Aetrix verify that AOTF286L is sourced from the original manufacturer or authorized distributors?

All AOTF286L 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 AOTF286L meets industry standards.

7.What is the process for return or replacement of AOTF286L?

All AOTF286L units undergo pre-shipment inspection (PSI). If there is an issue with AOTF286L, 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 AOTF286L part is unused and in its original packaging.

Return procedure for AOTF286L:

1.Submit a request within 90 days.

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

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