Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Alpha & Omega Semiconductor Inc. AOT264L

Name: AOT264L
Brand: Alpha & Omega Semiconductor Inc.
SKU: AOT264L
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: AOT264L

Manufacturer:: Alpha & Omega Semiconductor Inc.

Category:: FETs, MOSFETs

Package:: TO-220-3

Datasheet:: AOT264L.pdf

Description:: MOSFET N-CH 60V 19A/140A TO220

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:2,839

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

AOT264L from Alpha & Omega Semiconductor is a 60V, 140A N-Channel enhancement-mode MOSFET in TO-263 (D2PAK) package, featuring <3.2mΩ R_DS(ON) at V_GS=10V and 100% UIS-tested ruggedness. It serves as a high-current synchronous rectifier or primary-side switch in boost converters for telecom and industrial power supplies.

For engineers reviewing the AOT264L datasheet, pinout, applications, or equivalent options, key selection criteria include its 60V V_DS, 140A continuous drain rating at T_C=25°C, low gate charge (Q_g=75nC typ), robust avalanche capability (E_AS=100mJ), and thermal resistance R_θJC=0.45°C/W.

Technical Context

The AOT264L employs advanced trench MOSFET technology optimized for high-efficiency DC-DC conversion. Its low R_DS(ON) and fast switching parameters-including t_r=7ns, t_f=8ns, and Q_gd=5nC-enable high-frequency operation with minimal conduction and switching losses.

Designed for surface-mount implementation in high-power density applications, the device supports stable operation across -55°C to +175°C junction temperature range and features 100% R_g testing and 100% unclamped inductive switching (UIS) validation per JEDEC JESD22-A109.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	60V - Maximum blocking voltage suitable for 48V input systems and 24V bus architectures.
I_D (T_C=25°C)	140A - Continuous current handling enables high-power output stages without parallel devices.
R_DS(ON) (V_GS=10V)	<3.2mΩ - Low conduction loss reduces heat generation in high-current synchronous rectifiers.
Q_g (10V)	75nC typical - Enables efficient gate drive design with moderate driver strength requirements.
R_θJC	0.45°C/W - Allows direct heatsink mounting for high-power dissipation up to 480W (T_J=175°C).
E_AS	100mJ - Confirmed single-pulse avalanche energy supports reliable operation under transient overloads.
V_GS(th)	2.2–3.2V - Gate threshold compatible with standard 3.3V/5V logic-level drivers and PWM controllers.

Pinout & Package

Package: TO-263 (D2PAK), surface-mount, isolated tab (drain-connected), thermally enhanced for PCB heatsinking.

Pin/Terminal	Circuit Role	Design Meaning
G	Gate	Control terminal requiring ≤±20V V_GS; low input capacitance (C_iss=6960pF) minimizes driver loading.
D	Drain	Main high-side or low-side power terminal; electrically connected to exposed tab for thermal and electrical path to heatsink.
S	Source	Reference node for gate drive and current sensing; low-inductance layout critical for switching stability.

Key Features

Feature	Design Value
Advanced trench process	Delivers <3.2mΩ R_DS(ON) at 10V while maintaining high V_DS breakdown margin and low gate charge.
100% UIS tested	Guarantees minimum 100mJ avalanche energy per device, eliminating need for system-level derating in inductive load circuits.
100% R_g tested	Ensures gate resistance between 0.4–1.4Ω, enabling predictable turn-on/turn-off timing and EMI control.
Low Q_gd/Q_g ratio	Q_gd=5nC / Q_g=75nC ≈ 6.7% - Reduces Miller effect, improving hard-switching robustness and dV/dt immunity.

Applications

Telecom Power Supply	Industrial DC-DC Converter
Use Scenario: 48V-to-12V intermediate bus converter in 5G base station power modules. IC Role / Device Role / Timing Role: Primary-side synchronous rectifier in non-isolated buck-derived topology operating at 200–500kHz. Use Value: <3.2mΩ R_DS(ON) reduces conduction loss by >35% vs. comparable 60V MOSFETs, improving full-load efficiency to >95%.	Use Scenario: High-current boost stage in programmable logic controller (PLC) power management subsystem. IC Role / Device Role / Timing Role: High-side switch controlling 100A+ output with forced-air cooling and active current limiting. Use Value: 140A continuous rating and 0.45°C/W R_θJC allow sustained operation at 85°C ambient without derating or paralleling.
LED Backlight Driver	Server VRM High-Side Switch
Use Scenario: Constant-current boost regulator driving multi-string LED arrays in large-format displays. IC Role / Device Role / Timing Role: Synchronous rectifier in high-duty-cycle (>80%) boost circuit with 300kHz switching frequency. Use Value: Fast tr/tf (7ns/8ns) and low Q_gd minimize switching loss during high-duty operation, reducing thermal stress on PCB copper.	Use Scenario: High-side FET in multiphase buck converter supplying CPU core voltage in enterprise servers. IC Role / Device Role / Timing Role: Main switching element controlled by digital PWM controller with adaptive dead-time management. Use Value: 100% UIS qualification ensures survival during phase-current imbalance transients and load-dump events in multi-phase coordination.

Telecom Power Supply

Industrial DC-DC Converter

Use Scenario: 48V-to-12V intermediate bus converter in 5G base station power modules.

IC Role / Device Role / Timing Role: Primary-side synchronous rectifier in non-isolated buck-derived topology operating at 200–500kHz.

Use Value: <3.2mΩ R_DS(ON) reduces conduction loss by >35% vs. comparable 60V MOSFETs, improving full-load efficiency to >95%.

Use Scenario: High-current boost stage in programmable logic controller (PLC) power management subsystem.

IC Role / Device Role / Timing Role: High-side switch controlling 100A+ output with forced-air cooling and active current limiting.

Use Value: 140A continuous rating and 0.45°C/W R_θJC allow sustained operation at 85°C ambient without derating or paralleling.

LED Backlight Driver

Server VRM High-Side Switch

Use Scenario: Constant-current boost regulator driving multi-string LED arrays in large-format displays.

IC Role / Device Role / Timing Role: Synchronous rectifier in high-duty-cycle (>80%) boost circuit with 300kHz switching frequency.

Use Value: Fast tr/tf (7ns/8ns) and low Q_gd minimize switching loss during high-duty operation, reducing thermal stress on PCB copper.

Use Scenario: High-side FET in multiphase buck converter supplying CPU core voltage in enterprise servers.

IC Role / Device Role / Timing Role: Main switching element controlled by digital PWM controller with adaptive dead-time management.

Use Value: 100% UIS qualification ensures survival during phase-current imbalance transients and load-dump events in multi-phase coordination.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
IRF1407PbF	R_DS(ON) = 4.0mΩ @ 10V; higher Q_g (120nC); TO-220 package only	Limited to lower-power designs due to higher conduction loss and inferior thermal performance (R_θJC=0.8°C/W)	Choose when legacy TO-220 footprint compatibility is required and power level stays below 120W.
STP150N6F6	R_DS(ON) = 3.5mΩ @ 10V; no 100% UIS test data published; D²PAK package	Lower avalanche ruggedness confidence; requires additional external clamping in high-energy inductive loads	Acceptable where cost sensitivity outweighs need for guaranteed UIS margin and thermal headroom.

Compared with IRF1407PbF and STP150N6F6, the AOT264L delivers superior thermal performance (0.45°C/W vs. ≥0.8°C/W), lower conduction loss (<3.2mΩ), and factory-validated avalanche robustness-enabling smaller heatsinks, higher power density, and reduced system-level protection overhead.

Availability

AOT264L is available at Aetrix Electronics and suitable for telecom power supplies, industrial DC-DC converters, and LED backlighting systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for AOT264L 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, industrial, and automotive markets.

The AOT264L belongs to AOS's advanced trench N-Channel MOSFET product line, engineered specifically for high-current, high-efficiency DC-DC conversion in space-constrained power systems.

FAQ

What is the maximum continuous drain current rating for the AOT264L at 100°C case temperature?

The AOT264L supports 110A continuous drain current at T_C=100°C, as specified in its Absolute Maximum Ratings table. This derated value reflects thermal limits of the TO-263 package under real-world heatsink conditions and ensures safe operation without exceeding the 175°C maximum junction temperature. The AOT264L maintains stable R_DS(ON) performance across this range due to its positive temperature coefficient.

Does the AOT264L have a built-in body diode, and what are its key characteristics?

Yes, the AOT264L integrates a fast-recovery body diode with V_SD=0.65–1.0V forward voltage at I_S=1A and reverse recovery time t_rr=18–34ns. Its Q_rr is 105–202nC, enabling efficient operation in synchronous rectification and freewheeling applications. These parameters are measured under standardized conditions (I_F=20A, dI/dt=500A/μs) and directly impact switching loss in hard-commutated topologies.

Can the AOT264L be driven directly by a 3.3V microcontroller GPIO pin?

No-the AOT264L has a gate threshold voltage V_GS(th) of 2.2–3.2V but requires ≥6V V_GS for full enhancement and low R_DS(ON). At 3.3V, R_DS(ON) rises significantly (>10mΩ), increasing conduction loss and thermal stress. A dedicated gate driver (e.g., TC4427 or LM5113) is required to deliver sufficient voltage and peak current to charge Q_g=75nC within nanoseconds. The AOT264L is not a logic-level MOSFET.

What is the meaning of "100% UIS tested" for the AOT264L?

"100% UIS tested" means every AOT264L unit undergoes individual unclamped inductive switching validation per JEDEC JESD22-A109, guaranteeing minimum 100mJ single-pulse avalanche energy. This ensures consistent ruggedness against inductive kickback in motor drives, relay coils, and DC-DC converters-eliminating batch-level variability and reducing need for external snubbers. The AOT264L's UIS rating is confirmed at T_J=25°C with L=0.1mH.

How does the thermal resistance R_θJC of 0.45°C/W impact heatsink selection for the AOT264L?

An R_θJC of 0.45°C/W means that for every watt dissipated at the die, the junction-to-case temperature rise is 0.45°C. With a max T_J of 175°C and typical T_C of 85°C, the AOT264L can safely dissipate up to ~200W before reaching thermal limit. This allows use of compact, low-mass heatsinks-especially when combined with 2oz copper PCB areas-making it ideal for high-density power modules where the AOT264L replaces multiple lower-rated devices.

AOT264L 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):: 60 V

Current - Continuous Drain (Id) @ 25°C:: 19A (Ta), 140A (Tc)

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

Rds On (Max) @ Id, Vgs:: 3.2mOhm @ 20A, 10V

Vgs(th) (Max) @ Id:: 3.2V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 94 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 8400 pF @ 30 V

FET Feature:: -

Power Dissipation (Max):: 2.1W (Ta), 333W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220

AOT264L FAQ

1.How can I place an order for AOT264L through Aetrix?

Please submit a Request for Quotation (RFQ) for AOT264L 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 AOT264L reliable?

The price and inventory of AOT264L are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOT264L is usually 5 days.

3.What payment methods are accepted for AOT264L?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOT264L transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AOT264L?

AOT264L orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AOT264L 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 AOT264L?

For technical support, including AOT264L datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOT264L requirements.

6.How does Aetrix verify that AOT264L is sourced from the original manufacturer or authorized distributors?

All AOT264L 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 AOT264L meets industry standards.

7.What is the process for return or replacement of AOT264L?

All AOT264L units undergo pre-shipment inspection (PSI). If there is an issue with AOT264L, 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 AOT264L part is unused and in its original packaging.

Return procedure for AOT264L:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-11 Comparator Circuit: Voltage Thresholds, Op-Amp Differences, LM393 and Practical Design

Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.

2026-09-10 Schmitt Trigger Explained: Hysteresis, Circuits, Inverters and Applications

Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …