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

Alpha & Omega Semiconductor Inc. AO3460L

Name: AO3460L
Brand: Alpha & Omega Semiconductor Inc.
SKU: AO3460L
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AO3460L

Manufacturer:: Alpha & Omega Semiconductor Inc.

Category:: FETs, MOSFETs

Package:: 3-SMD, SOT-23-3 Variant

Datasheet:: AO3460L.pdf

Description:: MOSFET N-CH 60V 650MA SOT23

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Product details

Overview

AO3460L from Alpha & Omega Semiconductor is a 60V N-channel enhancement-mode MOSFET in SOT-23 package, rated for 0.65A continuous drain current at V_GS = 10V, with R_DS(ON) < 1.7Ω at 10V and < 2Ω at 4.5V, and ESD protection. It serves as a low-power load switch in portable battery-powered systems.

For engineers reviewing the AO3460L datasheet, pinout, applications, or equivalent options, key selection criteria include gate-threshold voltage (1–2.5V), body-diode forward voltage (0.8–1V), thermal resistance (R_θJA = 125°C/W), and low gate charge (Q_g(4.5V) = 0.4–1.5nC) for efficient switching in space-constrained DC-DC converters.

Technical Context

This MOSFET employs advanced trench-gate technology to achieve low R_DS(ON) and fast switching with gate drive compatible down to 4.5V. Its 0.8–1V body-diode forward voltage and 7.5nC reverse recovery charge support synchronous rectification in low-current buck converters.

The device operates within −55°C to +150°C junction temperature range, with absolute maximum V_DS = 60V and V_GS = ±20V. Thermal performance is characterized by R_θJA = 125°C/W (on 1in² FR-4, 2oz Cu) and R_θJL = 63°C/W, enabling reliable operation in thermally constrained PCB layouts.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	60V - Maximum drain-source blocking voltage; defines safe operating range in 24V/48V input rails.
I_D (continuous)	0.65A at T_A = 25°C - Supports load switching up to ~3W at ambient temperature without heatsinking.
R_DS(ON)	<1.7Ω at V_GS = 10V - Ensures <1.1mW conduction loss at 0.65A; critical for efficiency in always-on circuits.
V_GS(th)	1–2.5V - Enables logic-level turn-on with 3.3V microcontrollers; avoids need for gate boosters.
Q_g(4.5V)	0.4–1.5nC - Low gate charge reduces drive power and enables >1MHz switching in compact DC-DC stages.
V_SD	0.8–1V - Low body-diode forward drop minimizes reverse-recovery losses during freewheeling.
R_θJA	125°C/W - Limits power dissipation to ~1.4W at T_J = 150°C on standard FR-4; constrains max continuous I_D at elevated ambient.

Pinout & Package

SOT-23 package: surface-mount, 3-pin, plastic molded case with gull-wing leads; footprint compatible with JEDEC TO-236AB. Thermal pad not present; power dissipation relies on PCB copper area.

Pin/Terminal	Circuit Role	Design Meaning
1 (Source)	Current return path for channel conduction	Connected to ground or low-side reference; forms common node with body diode cathode.
2 (Gate)	Control electrode for channel formation	High-impedance input requiring <1.5nC charge; sensitive to ESD but protected per spec.
3 (Drain)	High-side current output terminal	Connected to load or supply rail; withstands 60V transients; carries full switched current.

Key Features

Feature	Design Value
Logic-level gate drive	Operates fully enhanced at V_GS ≥ 4.5V - eliminates level-shifting circuitry when driven by 3.3V or 5V MCUs.
ESD protection	HBM rating ≥ 2kV - enables robust handling during board assembly and field service without external TVS.
Low gate charge	Q_g(4.5V) ≤ 1.5nC - reduces driver IC stress and gate-drive loop EMI in high-frequency SMPS.
Trench MOSFET architecture	Optimized cell pitch and oxide thickness - achieves R_DS(ON) × Q_g figure-of-merit < 3.0Ω·nC for efficiency-critical applications.

Applications

Battery-Powered Load Switch	Low-Current DC-DC Converter
Use Scenario: Enabling/disabling power to Bluetooth LE sensors or IoT peripherals in sleep/wake cycles. IC Role / Device Role / Timing Role: Low-side switch controlling V_OUT rail; turned on/off by MCU GPIO with <10µs response. Use Value: R_DS(ON) < 2Ω at 4.5V ensures <0.65mW static loss at 0.5A, extending battery life in multi-year deployments.	Use Scenario: Synchronous rectifier in 3.3V-output buck converter powered from single Li-ion cell (2.7–4.2V). IC Role / Device Role / Timing Role: Freewheeling switch replacing Schottky diode; commutated at 500kHz–1MHz. Use Value: V_SD = 0.8V and Q_rr = 7.5nC reduce conduction and recovery losses versus 0.3A Schottky, improving light-load efficiency by ~3%.
USB Port Power Management	Low-Power Inverter Stage
Use Scenario: Overcurrent-protected VBUS switch in USB 2.0 peripheral hubs or dongles. IC Role / Device Role / Timing Role: High-side switch with integrated current sensing via R_DS(ON) monitoring. Use Value: Tight R_DS(ON) tolerance (1.4–1.7Ω) enables accurate ±15% current limit detection without sense resistor.	Use Scenario: Half-bridge leg in miniature H-bridge motor driver for vibration motors or piezo actuators. IC Role / Device Role / Timing Role: Low-side switch complementing high-side P-channel or driver IC; duty cycle < 50%. Use Value: Fast t_f = 5.5–11ns and low C_oss = 6–10pF minimize shoot-through risk and switching loss at 200kHz.

Battery-Powered Load Switch

Low-Current DC-DC Converter

Use Scenario: Enabling/disabling power to Bluetooth LE sensors or IoT peripherals in sleep/wake cycles.

IC Role / Device Role / Timing Role: Low-side switch controlling V_OUT rail; turned on/off by MCU GPIO with <10µs response.

Use Value: R_DS(ON) < 2Ω at 4.5V ensures <0.65mW static loss at 0.5A, extending battery life in multi-year deployments.

Use Scenario: Synchronous rectifier in 3.3V-output buck converter powered from single Li-ion cell (2.7–4.2V).

IC Role / Device Role / Timing Role: Freewheeling switch replacing Schottky diode; commutated at 500kHz–1MHz.

Use Value: V_SD = 0.8V and Q_rr = 7.5nC reduce conduction and recovery losses versus 0.3A Schottky, improving light-load efficiency by ~3%.

USB Port Power Management

Low-Power Inverter Stage

Use Scenario: Overcurrent-protected VBUS switch in USB 2.0 peripheral hubs or dongles.

IC Role / Device Role / Timing Role: High-side switch with integrated current sensing via R_DS(ON) monitoring.

Use Value: Tight R_DS(ON) tolerance (1.4–1.7Ω) enables accurate ±15% current limit detection without sense resistor.

Use Scenario: Half-bridge leg in miniature H-bridge motor driver for vibration motors or piezo actuators.

IC Role / Device Role / Timing Role: Low-side switch complementing high-side P-channel or driver IC; duty cycle < 50%.

Use Value: Fast t_f = 5.5–11ns and low C_oss = 6–10pF minimize shoot-through risk and switching loss at 200kHz.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
DMN3026LSD-13	R_DS(ON) = 1.9Ω @ 4.5V; V_DS = 30V; SOT-23-3	Limited to ≤30V systems; higher R_DS(ON) increases conduction loss at same current.	Choose for cost-sensitive 3.3V/5V logic-driven switches where 30V rating suffices.
SI2302DS-T1-E3	R_DS(ON) = 2.4Ω @ 4.5V; V_DS = 20V; SOT-23	Lower voltage rating restricts use to ≤20V rails; higher on-resistance degrades efficiency above 0.4A.	Prefer for ultra-low-cost consumer electronics with strict BOM budget and 12V or lower inputs.

Compared with DMN3026LSD-13 and SI2302DS-T1-E3, the AO3460L delivers superior 60V capability and lowest R_DS(ON) at 4.5V among SOT-23 N-ch devices, making it optimal for industrial 24V sensors and battery-backed systems requiring margin against voltage transients.

Availability

AO3460L is available at Aetrix Electronics and suitable for battery management, USB power delivery, and low-power DC-DC converter designs requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production lots.

Supply support for AO3460L 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-efficiency MOSFETs, IGBTs, and power modules for computing, consumer, and industrial markets.

The AO3460L belongs to AOS's logic-level N-channel MOSFET product line, engineered for space-constrained, low-voltage switching applications where gate drive simplicity and thermal efficiency are prioritized over ultra-high current handling.

FAQ

What is the maximum continuous drain current for AO3460L at 70°C ambient temperature?

The AO3460L supports 0.5A continuous drain current at T_A = 70°C, derived from its 1.4W power dissipation rating and R_θJA = 125°C/W. This value reflects thermal derating from the 0.65A rating at 25°C ambient and ensures junction temperature remains below 150°C under steady-state conditions. The AO3460L datasheet specifies this limit explicitly in the Absolute Maximum Ratings table.

Does AO3460L have built-in ESD protection, and what level is specified?

Yes, the AO3460L includes on-chip ESD protection rated to ≥2kV per Human Body Model (HBM), as confirmed in the General Description and Electrical Characteristics sections of the official datasheet. This protection allows direct handling and placement without additional external ESD safeguards in typical assembly environments. The AO3460L specification sheet states "ESD protected" unambiguously in both summary and feature lists.

Can AO3460L be driven directly by a 3.3V microcontroller GPIO without a gate driver?

Yes, the AO3460L can be fully enhanced using a 3.3V GPIO because its gate threshold voltage V_GS(th) ranges from 1.0V to 2.5V and R_DS(ON) remains <2Ω at V_GS = 4.5V - well within 3.3V logic swing margins. The AO3460L datasheet confirms operation down to 4.5V gate drive, and typical transfer curves show strong conduction onset below 3V. No external gate driver is required for low-frequency switching.

What is the body diode reverse recovery charge (Q_rr) of AO3460L, and why does it matter?

The AO3460L has a body diode reverse recovery charge Q_rr of 7.5nC, measured at I_F = 0.65A, dI/dt = 100A/µs, and V_GS = −9V. This parameter directly impacts switching loss and EMI in synchronous rectifier or half-bridge configurations. Lower Q_rr reduces tail current and voltage overshoot during turn-off - a key advantage of the AO3460L over general-purpose MOSFETs in high-frequency DC-DC converters.

Is AO3460L suitable for automotive applications?

No, the AO3460L is not qualified for automotive use. The official 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." It lacks AEC-Q101 qualification, extended temperature screening, and automotive-specific reliability testing. For automotive-grade alternatives, consult AOS's AEC-Q101-qualified portfolio - the AO3460L is intended for industrial and consumer equipment only.

AO3460L Specifications

Product attributes: Attribute value

Manufacturer:: Alpha & Omega Semiconductor Inc.

Series:: -

Package/Case:: 3-SMD, SOT-23-3 Variant

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 60 V

Current - Continuous Drain (Id) @ 25°C:: 650mA (Ta)

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

Rds On (Max) @ Id, Vgs:: 1.7Ohm @ 650mA, 10V

Vgs(th) (Max) @ Id:: 2.5V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: -

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 27 pF @ 30 V

FET Feature:: -

Power Dissipation (Max):: 1.4W (Ta)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

AO3460L FAQ

1.How can I place an order for AO3460L through Aetrix?

Please submit a Request for Quotation (RFQ) for AO3460L 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 AO3460L reliable?

The price and inventory of AO3460L are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AO3460L is usually 5 days.

3.What payment methods are accepted for AO3460L?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AO3460L transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AO3460L?

AO3460L orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AO3460L 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 AO3460L?

For technical support, including AO3460L datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AO3460L requirements.

6.How does Aetrix verify that AO3460L is sourced from the original manufacturer or authorized distributors?

All AO3460L 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 AO3460L meets industry standards.

7.What is the process for return or replacement of AO3460L?

All AO3460L units undergo pre-shipment inspection (PSI). If there is an issue with AO3460L, 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 AO3460L part is unused and in its original packaging.

Return procedure for AO3460L:

1.Submit a request within 90 days.

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

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