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

Alpha & Omega Semiconductor Inc. AOT462L

Name: AOT462L
Brand: Alpha & Omega Semiconductor Inc.
SKU: AOT462L
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AOT462L

Manufacturer:: Alpha & Omega Semiconductor Inc.

Category:: FETs, MOSFETs

Package:: TO-220-3

Datasheet:: AOT462L.pdf

Description:: MOSFET N-CH 60V 7A/35A TO220

Quantity:: RFQ Add To RFQ list

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Inventory:4,850

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Product details

Overview

AOT462L from Alpha & Omega Semiconductor is a 60V, 35A N-Channel Trench MOSFET in TO-220 package with R_DS(ON) < 18 mΩ at V_GS = 10 V, 100% UIS tested, and optimized for synchronous rectification and boost converter stages in consumer, telecom, and industrial power supplies.

For engineers reviewing the AOT462L datasheet, pinout, applications, or equivalent options, key selection criteria include its low on-resistance, avalanche-rated ruggedness, gate charge (Q_g = 27.8–36 nC), thermal resistance (R_θJC = 1.5 °C/W), and TO-220 mechanical compatibility in high-current DC/DC topologies.

Technical Context

The AOT462L employs advanced trench-gate silicon technology to achieve sub-18 mΩ R_DS(ON) at 10 V drive while maintaining robust unclamped inductive switching (UIS) capability up to 101 mJ. Its gate threshold voltage (2.0–4.0 V) and low Q_gd/Q_g ratio (6.6/36 nC) support fast, controllable turn-on/turn-off in hard-switched converters.

Thermally, it features a junction-to-case resistance of 1.5 °C/W and is rated for continuous operation up to T_J = 175 °C. The device is qualified for consumer applications and not authorized for life-support systems per manufacturer specification.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	60 V - Maximum drain-source blocking voltage for 12–48 V input DC/DC stages
I_D (V_GS=10 V)	35 A - Continuous current rating at T_C = 25 °C, suitable for 50–100 W power stages
R_DS(ON)	< 18 mΩ - Enables < 0.6 W conduction loss at 35 A, critical for efficiency in synchronous rectifiers
Q_g (10 V)	27.8–36 nC - Determines gate driver power requirement and switching speed in 100–500 kHz converters
E_AS	101 mJ - Confirmed avalanche energy rating supports reliable operation under transient overcurrent
R_θJC	1.5 °C/W - Enables high-power dissipation with minimal heatsink when mounted to copper plane or heatsink
V_GS(th)	2.0–4.0 V - Ensures clean turn-on with standard 5 V or 3.3 V logic-level gate drivers

Pinout & Package

Package: TO-220 (3-lead, through-hole, isolated tab). Tab is Drain-connected; leads are Gate (left), Drain (center), Source (right) in standard top-view orientation.

Pin/Terminal	Circuit Role	Design Meaning
Gate (G)	Control terminal	Receives gate drive signal; low R_g (2.8–4.2 Ω) minimizes Miller-induced oscillation risk
Drain (D)	High-side switch node	Connected to MOSFET tab; electrically tied to heat sink; carries full load current path
Source (S)	Reference node / return path	Common source connection for gate drive loop; defines local ground reference for control circuitry

Key Features

Feature	Design Value
100% UIS tested	Guarantees minimum 101 mJ single-pulse avalanche energy without derating or screening exceptions
Trench MOSFET architecture	Delivers < 18 mΩ R_DS(ON) with reduced gate charge vs. planar equivalents, improving FOM (R_DS(ON) × Q_g)
Low Q_gd/Q_g ratio	6.6/36 nC enables stable hard-switching with reduced risk of shoot-through in half-bridge configurations
Body diode t_rr & Q_rr	35–64 ns reverse recovery time and 47–62 nC recovered charge support efficient synchronous rectifier operation

Applications

LED Backlighting Power Supply	Telecom DC/DC Converter
Use Scenario: High-efficiency boost converter driving parallel LED strings in LCD TVs and monitors. IC Role / Device Role: Synchronous rectifier switch replacing Schottky diode in continuous conduction mode (CCM) boost stage. Use Value: Reduces conduction loss by >40% vs. 40 V Schottky, enabling higher luminance at same thermal budget.	Use Scenario: 48 V input to 12 V intermediate bus converter in telecom shelf power systems. IC Role / Device Role: Primary-side high-side switch in active-clamp forward or LLC resonant topology. Use Value: Low R_DS(ON) and rugged UIS rating ensure reliability during line transients and hot-swap events.
Industrial AC/DC Adapter	Consumer Laptop Adapter
Use Scenario: 24 V output, 65 W flyback converter with synchronous rectification on secondary side. IC Role / Device Role: Secondary-side N-channel MOSFET used as self-driven synchronous rectifier. Use Value: Achieves >92% efficiency at full load due to < 18 mΩ on-resistance and fast body diode recovery.	Use Scenario: 19.5 V, 90 W adapter using QR flyback with secondary-side synchronous rectification. IC Role / Device Role: Low-voltage, high-current synchronous rectifier operating at 65–130 kHz. Use Value: Enables compact design with no external gate driver needed-gate driven directly from transformer auxiliary winding.

LED Backlighting Power Supply

Telecom DC/DC Converter

Use Scenario: High-efficiency boost converter driving parallel LED strings in LCD TVs and monitors.

IC Role / Device Role: Synchronous rectifier switch replacing Schottky diode in continuous conduction mode (CCM) boost stage.

Use Value: Reduces conduction loss by >40% vs. 40 V Schottky, enabling higher luminance at same thermal budget.

Use Scenario: 48 V input to 12 V intermediate bus converter in telecom shelf power systems.

IC Role / Device Role: Primary-side high-side switch in active-clamp forward or LLC resonant topology.

Use Value: Low R_DS(ON) and rugged UIS rating ensure reliability during line transients and hot-swap events.

Industrial AC/DC Adapter

Consumer Laptop Adapter

Use Scenario: 24 V output, 65 W flyback converter with synchronous rectification on secondary side.

IC Role / Device Role: Secondary-side N-channel MOSFET used as self-driven synchronous rectifier.

Use Value: Achieves >92% efficiency at full load due to < 18 mΩ on-resistance and fast body diode recovery.

Use Scenario: 19.5 V, 90 W adapter using QR flyback with secondary-side synchronous rectification.

IC Role / Device Role: Low-voltage, high-current synchronous rectifier operating at 65–130 kHz.

Use Value: Enables compact design with no external gate driver needed-gate driven directly from transformer auxiliary winding.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STP60NF06	R_DS(ON) = 0.018 Ω (typ), V_DS = 60 V, Q_g = 65 nC - higher gate charge increases driver loss	Same TO-220 package but slower switching; less suitable for >200 kHz designs	Prefer AOT462L where switching loss dominates; STP60NF06 acceptable for cost-sensitive 50–100 kHz adapters
IRFZ44NPBF	R_DS(ON) = 0.028 Ω (max), V_DS = 55 V, no UIS rating specified - lower voltage margin and untested avalanche	Limited to ≤40 V input systems; unsuitable for telecom 48 V nominal rails with surge	AOT462L preferred for 48 V input or high-reliability requirements; IRFZ44NPBF viable only in 24 V consumer systems

Compared with STP60NF06 and IRFZ44NPBF, the AOT462L delivers superior R_DS(ON) × Q_g figure-of-merit, guaranteed UIS performance, and tighter V_GS(th) distribution-making it optimal for high-efficiency, high-reliability 60 V synchronous rectifiers.

Availability

AOT462L is available at Aetrix Electronics and suitable for LED backlighting power supplies, telecom DC/DC converters, and industrial AC/DC adapters requiring stable component supply and long-term production continuity.

Supply support for AOT462L 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 power conversion and management.

The AOT462L belongs to AOS's TrenchMOS™ family, engineered specifically for high-current, high-efficiency DC/DC conversion in consumer, telecom, and industrial power supplies-not qualified for automotive or medical life-support use.

FAQ

What is the maximum continuous drain current rating for the AOT462L at 100°C case temperature?

The AOT462L supports 27 A continuous drain current at T_C = 100 °C, as specified in its Absolute Maximum Ratings table. This derating reflects thermal limits imposed by its R_θJC = 1.5 °C/W and maximum junction temperature of 175 °C. Designers must verify heatsinking to maintain T_C ≤ 100 °C under full-load conditions to sustain this current in production AOT462L implementations.

Is the AOT462L suitable for synchronous rectification in a 48 V input boost converter?

Yes-the AOT462L is explicitly recommended for synchronous rectifiers in boost converters per its General Description. With 60 V V_DS, < 18 mΩ R_DS(ON), and fast body diode recovery (t_rr = 35–64 ns), it handles 48 V nominal input with margin for transients and delivers high efficiency in CCM operation. Its 100% UIS testing further ensures robustness during inductor current reversal events in AOT462L-based designs.

Does the AOT462L have a specified gate resistance value, and how does it affect layout?

Yes-the AOT462L has a typical gate resistance (R_g) of 2.8–4.2 Ω, measured internally between gate pad and gate metallization. This value reduces sensitivity to PCB trace inductance and helps dampen ringing during switching transitions. Layout best practice is to keep gate drive traces short and direct, but the built-in R_g allows moderate trace length without requiring external gate resistors in most AOT462L applications below 300 kHz.

What is the body diode forward voltage of the AOT462L, and how does it impact light-load efficiency?

The AOT462L body diode forward voltage (V_SD) is 0.73–1.0 V at I_S = 1 A and T_J = 25 °C. At light loads, where the MOSFET may not fully turn on, this low V_SD minimizes conduction loss during freewheeling, preserving efficiency in DCM operation. Combined with low Q_rr (47–62 nC), it enables smooth transition into synchronous rectification mode across the full load range of an AOT462L-based power stage.

Can the AOT462L be used as a direct replacement for the AOB462L in existing designs?

No-the AOT462L and AOB462L share identical electrical specifications but differ in package: AOT462L uses TO-220, while AOB462L uses TO-263 (D2PAK). Mechanical mounting, thermal interface, and PCB footprint are incompatible. Though electrically interchangeable, substituting AOT462L for AOB462L requires board redesign. Both parts are valid options within the same AOT462L/AOB462L product family-but they are not drop-in replacements.

AOT462L Specifications

Product attributes: Attribute value

Manufacturer:: Alpha & Omega Semiconductor Inc.

Series:: -

Package/Case:: TO-220-3

Packaging:: Tube

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 60 V

Current - Continuous Drain (Id) @ 25°C:: 7A (Ta), 35A (Tc)

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

Rds On (Max) @ Id, Vgs:: 18mOhm @ 30A, 10V

Vgs(th) (Max) @ Id:: 4V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 36 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 2400 pF @ 30 V

FET Feature:: -

Power Dissipation (Max):: 2.1W (Ta), 100W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220

AOT462L FAQ

1.How can I place an order for AOT462L through Aetrix?

Please submit a Request for Quotation (RFQ) for AOT462L 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 AOT462L reliable?

The price and inventory of AOT462L are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOT462L is usually 5 days.

3.What payment methods are accepted for AOT462L?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOT462L transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AOT462L?

AOT462L orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AOT462L 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 AOT462L?

For technical support, including AOT462L datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOT462L requirements.

6.How does Aetrix verify that AOT462L is sourced from the original manufacturer or authorized distributors?

All AOT462L 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 AOT462L meets industry standards.

7.What is the process for return or replacement of AOT462L?

All AOT462L units undergo pre-shipment inspection (PSI). If there is an issue with AOT462L, 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 AOT462L part is unused and in its original packaging.

Return procedure for AOT462L:

1.Submit a request within 90 days.

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

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