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

Alpha & Omega Semiconductor Inc. AO3414L

Name: AO3414L
Brand: Alpha & Omega Semiconductor Inc.
SKU: AO3414L
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AO3414L

Manufacturer:: Alpha & Omega Semiconductor Inc.

Category:: FETs, MOSFETs

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

Datasheet:: AO3414L.pdf

Description:: MOSFET N-CHANNEL 20V 3A SOT23-3

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AO3414L from Alpha & Omega Semiconductor is an N-channel enhancement-mode MOSFET designed for low-voltage load switching and PWM applications, featuring 20 V V_DS, 4.2 A continuous drain current at T_A = 25°C, R_DS(ON) < 50 mΩ at V_GS = 4.5 V, and lead-free SOT-23 (TO-236) packaging. It operates down to 1.8 V gate drive and supports consumer-grade power management in space-constrained designs.

For engineers reviewing the AO3414L datasheet, pinout, applications, or equivalent options, key selection criteria include its 1.8 V logic-level gate threshold, low R_DS(ON) at 2.5 V and 4.5 V, thermal resistance of 90°C/W (R_θJA), and suitability for battery-powered DC-DC load switches and LED dimming circuits.

Technical Context

This MOSFET employs advanced trench technology to achieve low gate charge (Q_g = 6.2 nC) and fast switching (t_D(on) = 5.5 ns, t_f = 12.7 ns), enabling high-efficiency operation in pulse-width modulated power paths. Its body diode exhibits V_SD = 0.76 V and Q_rr = 3.5 nC under IF = 4 A, dI/dt = 100 A/µs conditions.

The device is characterized across temperature (–55°C to 150°C junction range) with R_DS(ON) normalized to 1.4× at 125°C versus 25°C at V_GS = 4.5 V, and supports pulsed drain current up to 15 A with duty-cycle-limited thermal handling per SOA curves.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	20 V - Maximum drain-source blocking voltage for 3.3 V/5 V rail switching
I_D (continuous)	4.2 A at T_A = 25°C - Sustained load current capability on standard FR-4 PCB
R_DS(ON)	< 50 mΩ at V_GS = 4.5 V - Low conduction loss in 3.3 V logic-driven power stages
V_GS(th)	0.4–1.0 V - Guaranteed turn-on with 1.8 V microcontroller GPIO
Q_g	6.2 nC - Enables efficient 1–2 MHz switching with moderate gate driver strength
R_θJA	90°C/W - Thermal limit defines max power dissipation (~1.4 W at T_A = 70°C)
Package	SOT-23 (TO-236) - Surface-mount, 3-pin, footprint-compatible with industry-standard logic-level MOSFETs

Pinout & Package

SOT-23 (TO-236) package with gull-wing leads, 1.3 mm × 2.9 mm footprint, 1.45 mm height, and lead-free (RoHS-compliant) finish.

Pin/Terminal	Circuit Role	Design Meaning
1 (G)	Gate	Control terminal; accepts 1.8–8 V logic-level input; requires <6.2 nC charge for full enhancement
2 (S)	Source	Reference node for gate drive; connects to ground or low-side return path in load-switch topology
3 (D)	Drain	High-side power output; handles bidirectional current during PWM or body-diode conduction

Key Features

Feature	Design Value
Logic-level gate drive	Operates fully enhanced at V_GS ≥ 1.8 V - eliminates need for level-shifting in MCU-controlled loads
Low R_DS(ON) at 2.5 V	< 63 mΩ - enables efficient operation directly from 2.5 V LDO rails or battery inputs
Fast switching speed	t_r = 6.3 ns, t_f = 12.7 ns - reduces transition losses in high-frequency PWM (<2 MHz)
Optimized body diode	Q_rr = 3.5 nC, t_rr = 12.3 ns - minimizes reverse-recovery loss in synchronous-buck or flyback freewheeling
Green Product	Lead-free, halogen-free, RoHS-compliant construction - meets consumer electronics environmental requirements

Applications

Smartphone Power Management	USB-C Load Switch
Use Scenario: Controlling power delivery to USB peripherals or accessory ports in portable devices. IC Role / Device Role / Timing Role: Low-side load switch enabling/disabling VBUS path with minimal voltage drop and fast enable timing. Use Value: R_DS(ON) < 50 mΩ at 3.3 V gate ensures <210 mV dropout at 4.2 A, preserving USB voltage margin.	Use Scenario: Implementing overcurrent-protected hot-swap control for USB-C PD sink applications. IC Role / Device Role / Timing Role: High-speed, low-threshold switch responding to controller fault signals within microseconds. Use Value: 1.8 V V_GS(th) allows direct interface with 1.8 V I²C or GPIO fault outputs without level translation.
LED Dimming Driver	IoT Sensor Node Power Gating
Use Scenario: PWM-based brightness control of white LEDs in compact lighting modules. IC Role / Device Role / Timing Role: Low-loss, high-duty-cycle switch in constant-current LED string path. Use Value: Q_g = 6.2 nC enables clean 1–5 kHz PWM edges with minimal gate-drive power overhead.	Use Scenario: Selectively powering RF transceivers or analog sensors in ultra-low-power IoT endpoints. IC Role / Device Role / Timing Role: Zero-quiescent-current shutdown switch isolating subsystems during sleep mode. Use Value: I_DSS < 1 µA at V_DS = 16 V ensures sub-100 nA leakage per switched rail, preserving battery life.

Smartphone Power Management

USB-C Load Switch

Use Scenario: Controlling power delivery to USB peripherals or accessory ports in portable devices.

IC Role / Device Role / Timing Role: Low-side load switch enabling/disabling VBUS path with minimal voltage drop and fast enable timing.

Use Value: R_DS(ON) < 50 mΩ at 3.3 V gate ensures <210 mV dropout at 4.2 A, preserving USB voltage margin.

Use Scenario: Implementing overcurrent-protected hot-swap control for USB-C PD sink applications.

IC Role / Device Role / Timing Role: High-speed, low-threshold switch responding to controller fault signals within microseconds.

Use Value: 1.8 V V_GS(th) allows direct interface with 1.8 V I²C or GPIO fault outputs without level translation.

LED Dimming Driver

IoT Sensor Node Power Gating

Use Scenario: PWM-based brightness control of white LEDs in compact lighting modules.

IC Role / Device Role / Timing Role: Low-loss, high-duty-cycle switch in constant-current LED string path.

Use Value: Q_g = 6.2 nC enables clean 1–5 kHz PWM edges with minimal gate-drive power overhead.

Use Scenario: Selectively powering RF transceivers or analog sensors in ultra-low-power IoT endpoints.

IC Role / Device Role / Timing Role: Zero-quiescent-current shutdown switch isolating subsystems during sleep mode.

Use Value: I_DSS < 1 µA at V_DS = 16 V ensures sub-100 nA leakage per switched rail, preserving battery life.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
DMN2004LK-7	R_DS(ON) = 48 mΩ @ 4.5 V; higher Q_g = 8.5 nC; same SOT-23 package	Marginally lower conduction loss but slower switching; less suitable for >1 MHz PWM	Prefer AO3414L when gate drive strength is limited or switching frequency exceeds 1 MHz
SI2302DS-T1-GE3	R_DS(ON) = 60 mΩ @ 4.5 V; V_GS(th) = 0.6–1.2 V; slightly higher thermal resistance (R_θJA = 95°C/W)	Higher threshold spread increases risk of partial turn-on with weak drivers; lower peak current rating (3.5 A)	Prefer AO3414L for robust 1.8 V drive compatibility and higher continuous current headroom

Compared with DMN2004LK-7 and SI2302DS-T1-GE3, the AO3414L delivers superior combination of low gate threshold, lowest Q_g, and highest continuous current in SOT-23 - making it optimal for battery-powered systems requiring fast, low-voltage switching with minimal board area.

Availability

AO3414L is available at Aetrix Electronics and suitable for smartphone power management, USB-C load switching, LED dimming drivers, and IoT sensor node power gating requiring stable component supply and RoHS-compliant sourcing.

Supply support for AO3414L 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, and industrial markets.

The AO3414L belongs to AOS's logic-level N-channel MOSFET product line, engineered for energy-efficient, space-constrained DC power control in battery-operated and USB-powered electronics.

FAQ

What is the maximum gate-source voltage rating for AO3414L?

The AO3414L has a maximum gate-source voltage (V_GS) rating of ±8 V, as specified in its Absolute Maximum Ratings table. Exceeding this voltage risks permanent gate oxide damage. Designers should ensure gate drive circuits - including transient spikes and ringing - remain within this limit, especially in high-dV/dt environments. The AO3414L datasheet confirms this value applies across the full operating temperature range.

Does AO3414L support true 1.8 V logic-level operation?

Yes, the AO3414L supports reliable enhancement-mode operation at V_GS = 1.8 V, with R_DS(ON) < 87 mΩ and guaranteed V_GS(th) as low as 0.4 V. This enables direct drive from 1.8 V microcontroller GPIOs without level shifters. The AO3414L's transfer characteristics (Figure 2) and R_DS(ON) vs. V_GS curve (Figure 5) validate full conduction starting at 1.8 V across temperature.

What is the safe operating area (SOA) limitation for AO3414L in DC applications?

The AO3414L's DC safe operating area is limited by its thermal resistance (R_θJA = 90°C/W) and maximum junction temperature (T_J(max) = 150°C). At T_A = 25°C, continuous power dissipation is capped at ~1.4 W, corresponding to ~3.7 A at R_DS(ON) = 50 mΩ. Derating is required above 25°C ambient - e.g., ~2.5 A at 70°C. The AO3414L SOA curve (Figure 9) confirms this boundary under DC conditions.

Is AO3414L pin-compatible with other SOT-23 N-channel MOSFETs?

The AO3414L uses standard SOT-23 (TO-236) pinout: Pin 1 = Gate, Pin 2 = Source, Pin 3 = Drain - matching industry convention for 3-pin N-channel MOSFETs. While not guaranteed as a drop-in replacement for all SOT-23 parts, this pin assignment is consistent with AO3400, DMN2004LK, and SI2302DS. Always verify layout compatibility and electrical parameters before substitution, as the AO3414L's specific R_DS(ON) and Q_g differ.

What is the body diode forward voltage of AO3414L at 1 A?

The AO3414L body diode forward voltage (V_SD) is 0.76 V (typical) and 1.0 V (max) at I_S = 1 A and T_J = 25°C, per its Electrical Characteristics table. This low V_SD supports efficient freewheeling in buck converters or reverse-polarity protection. The AO3414L's body diode recovery time (t_rr = 12.3 ns) and charge (Q_rr = 3.5 nC) further confirm suitability for high-frequency inductive switching.

AO3414L 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):: 20 V

Current - Continuous Drain (Id) @ 25°C:: 3A (Ta)

Drive Voltage (Max Rds On, Min Rds On):: 1.8V, 4.5V

Rds On (Max) @ Id, Vgs:: 62mOhm @ 3A, 4.5V

Vgs(th) (Max) @ Id:: 1V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 3.8 nC @ 4.5 V

Vgs (Max):: ±8V

Input Capacitance (Ciss) (Max) @ Vds:: 320 pF @ 10 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

AO3414L FAQ

1.How can I place an order for AO3414L through Aetrix?

Please submit a Request for Quotation (RFQ) for AO3414L 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 AO3414L reliable?

The price and inventory of AO3414L are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AO3414L is usually 5 days.

3.What payment methods are accepted for AO3414L?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AO3414L transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AO3414L?

AO3414L orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AO3414L 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 AO3414L?

For technical support, including AO3414L datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AO3414L requirements.

6.How does Aetrix verify that AO3414L is sourced from the original manufacturer or authorized distributors?

All AO3414L 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 AO3414L meets industry standards.

7.What is the process for return or replacement of AO3414L?

All AO3414L units undergo pre-shipment inspection (PSI). If there is an issue with AO3414L, 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 AO3414L part is unused and in its original packaging.

Return procedure for AO3414L:

1.Submit a request within 90 days.

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

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