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

Alpha & Omega Semiconductor Inc. AOL1424

Name: AOL1424
Brand: Alpha & Omega Semiconductor Inc.
SKU: AOL1424
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AOL1424

Manufacturer:: Alpha & Omega Semiconductor Inc.

Category:: FETs, MOSFETs

Package:: 3-PowerSMD, Flat Leads

Datasheet:: AOL1424.pdf

Description:: MOSFET N-CH 30V 15A/70A ULTRASO8

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AOL1424 from Alpha & Omega Semiconductor is an N-channel enhancement-mode MOSFET in Ultra SO-8 package, rated for 30 V V_DS, 70 A continuous drain current at T_A=25°C, and R_DS(ON) < 6.5 mΩ at V_GS = 10 V. It features ESD protection, UIS testing, and low gate charge (Q_g = 36–48 nC), making it suitable as a high-efficiency load switch in DC-DC converters and power distribution systems.

For engineers reviewing the AOL1424 datasheet, pinout, applications, or equivalent options, key selection criteria include its 4.5 V logic-level gate drive compatibility, 2.5 °C/W junction-to-case thermal resistance, avalanche-rated operation (I_AR = 30 A, E_AR = 135 mJ), and body-diode reverse recovery performance (t_rr = 27–33 ns, Q_rr = 17 nC).

Technical Context

The AOL1424 employs advanced trench-gate technology to achieve low R_DS(ON) and fast switching with gate threshold voltage of 1.4–2.5 V and transconductance g_FS = 67 S. Its dynamic parameters-C_iss = 1803–2170 pF, C_oss = 387 pF, C_rss = 238 pF-support high-frequency synchronous rectification and PWM control.

Thermally, it uses a bottom-tab Ultra SO-8 package with drain-connected tab, enabling direct heatsinking via PCB copper. Steady-state R_θJC = 2.5 °C/W and R_θJA = 55 °C/W (FR-4, 2 oz Cu) define its power handling under conduction and switching losses.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	30 V - Maximum blocking voltage for 24 V rail applications with margin
I_D (continuous)	70 A @ T_A = 25°C - Supports high-current load switching without external heatsink
R_DS(ON)	< 6.5 mΩ @ V_GS = 10 V - Minimizes conduction loss in 12–24 V power stages
Q_g	36–48 nC @ V_GS = 10 V - Enables efficient gate driving at >500 kHz switching frequencies
t_rr / Q_rr	27–33 ns / 17 nC - Reduces body-diode switching loss and EMI in hard-switched topologies
R_θJC	2.5 °C/W - Allows direct thermal path to heatsink or copper pour for sustained 50 W dissipation
V_GS(th)	1.4–2.5 V - Ensures reliable turn-on with 3.3 V or 5 V logic-level drivers

Pinout & Package

Package: Ultra SO-8 (bottom-exposed drain tab). Tab is electrically connected to Drain (D) and serves as primary thermal and current path.

Pin/Terminal	Circuit Role	Design Meaning
G	Gate	Control terminal; requires low-impedance driver due to Q_g = 36–48 nC and R_g = 1.3–2 Ω
S	Source	Reference node for gate drive; connects to ground or low-side return path
D (tab)	Drain	Main power output; tab must be soldered to large copper area for thermal management
D (pins 1,2,3,5,6,7)	Drain	Parallel drain connections reduce package inductance and improve current sharing

Key Features

Feature	Design Value
Logic-level gate drive	Operates fully enhanced at V_GS ≥ 4.5 V - compatible with 3.3 V/5 V microcontrollers and gate drivers
Ultra-low R_DS(ON)	< 9.8 mΩ @ V_GS = 4.5 V - maintains efficiency in battery-powered and thermally constrained designs
UIS-rated avalanche capability	I_AR = 30 A, E_AR = 135 mJ - withstands unclamped inductive switching events without failure
ESD protection	HBM rating per JESD22-A114 - eliminates need for external ESD protection in board-level assembly
Optimized body diode	t_rr = 27–33 ns, Q_rr = 17 nC - reduces reverse recovery loss and voltage overshoot in synchronous buck freewheeling

Applications

DC-DC Synchronous Buck Converter	Hot-Swap / Load Switch
Use Scenario: High-efficiency 12 V to 3.3 V/5 V conversion in server VRMs and industrial power modules. IC Role / Device Role: Low-side synchronous rectifier replacing Schottky diode to reduce conduction loss. Use Value: R_DS(ON) < 6.5 mΩ cuts I²R loss by >70% vs. 40 mΩ discrete MOSFETs, improving full-load efficiency by 1.2–1.8%.	Use Scenario: Inrush current limiting and fault isolation in 24 V industrial PLC I/O modules. IC Role / Device Role: Main power FET controlled by dedicated load switch IC or GPIO-driven gate driver. Use Value: 70 A rating and 30 A avalanche current enable robust hot-plug operation with no external current-sense or foldback circuitry.
Motor Driver Half-Bridge	USB-C Power Delivery Sink
Use Scenario: 24 V BLDC motor gate driver stage in compact fan or pump controllers. IC Role / Device Role: Low-side switch in half-bridge configuration with fast body-diode recovery. Use Value: t_rr = 27–33 ns and Q_rr = 17 nC minimize shoot-through risk and reduce gate driver stress during commutation.	Use Scenario: 20 V/5 A USB PD 3.0 sink path in portable medical monitors and test equipment. IC Role / Device Role: Input power switch enabling/disabling VBUS connection with overcurrent and thermal protection. Use Value: 4.5 V logic-level turn-on allows direct interface with PD controller's 3.3 V GPIO, eliminating level-shifter components.

DC-DC Synchronous Buck Converter

Hot-Swap / Load Switch

Use Scenario: High-efficiency 12 V to 3.3 V/5 V conversion in server VRMs and industrial power modules.

IC Role / Device Role: Low-side synchronous rectifier replacing Schottky diode to reduce conduction loss.

Use Value: R_DS(ON) < 6.5 mΩ cuts I²R loss by >70% vs. 40 mΩ discrete MOSFETs, improving full-load efficiency by 1.2–1.8%.

Use Scenario: Inrush current limiting and fault isolation in 24 V industrial PLC I/O modules.

IC Role / Device Role: Main power FET controlled by dedicated load switch IC or GPIO-driven gate driver.

Use Value: 70 A rating and 30 A avalanche current enable robust hot-plug operation with no external current-sense or foldback circuitry.

Motor Driver Half-Bridge

USB-C Power Delivery Sink

Use Scenario: 24 V BLDC motor gate driver stage in compact fan or pump controllers.

IC Role / Device Role: Low-side switch in half-bridge configuration with fast body-diode recovery.

Use Value: t_rr = 27–33 ns and Q_rr = 17 nC minimize shoot-through risk and reduce gate driver stress during commutation.

Use Scenario: 20 V/5 A USB PD 3.0 sink path in portable medical monitors and test equipment.

IC Role / Device Role: Input power switch enabling/disabling VBUS connection with overcurrent and thermal protection.

Use Value: 4.5 V logic-level turn-on allows direct interface with PD controller's 3.3 V GPIO, eliminating level-shifter components.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
AOCA42226	30 V, 60 A, R_DS(ON) = 7.2 mΩ @ 10 V; DFN5x6 package; no exposed drain tab	Limited thermal performance (R_θJA = 40 °C/W on 2 oz Cu); unsuitable for >35 W continuous dissipation	Preferred where space-constrained layout favors DFN over SO-8, but requires careful thermal design
IRLML6344	30 V, 4.3 A, R_DS(ON) = 32 mΩ @ 4.5 V; SOT-23 package; lower Q_g (6.2 nC)	Not scalable to >5 A loads; lacks avalanche rating and UIS testing	Only for ultra-low-power, low-current switching where size outweighs current capacity

Compared with AOCA42226 and IRLML6344, the AOL1424 delivers superior current density (70 A in SO-8), proven avalanche ruggedness, and optimized thermal path via drain-tab mounting-making it the only choice among the three for industrial-grade 24 V load switching above 20 A.

Availability

AOL1424 is available at Aetrix Electronics and suitable for DC-DC converters, hot-swap controllers, motor drivers, and USB-C power delivery systems requiring stable component supply and long-term industrial availability.

Supply support for AOL1424 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 AOL1424 belongs to AOS's logic-level trench-MOSFET product line, engineered specifically for high-current, low-voltage load switching and synchronous rectification where thermal reliability and avalanche robustness are critical.

FAQ

What is the maximum continuous drain current rating for the AOL1424 at 70°C ambient temperature?

The AOL1424 supports 15 A continuous drain current at T_A = 70°C (per Absolute Maximum Ratings table). This derating reflects thermal limits when using standard PCB copper without forced airflow or heatsinking. At T_C = 25°C, the device sustains 30 A continuously due to its 2.5 °C/W R_θJC.

Does the AOL1424 require a gate resistor for safe operation?

Yes-the AOL1424 benefits from an external gate resistor (typically 2–10 Ω) to dampen ringing caused by its low gate resistance (R_g = 1.3–2 Ω) and high C_iss/C_rss ratio. This prevents unintended turn-on during fast dv/dt events and ensures clean switching transitions in hard-switched topologies.

Is the AOL1424 RoHS compliant and halogen-free?

Yes-the AOL1424 is RoHS compliant and halogen- and antimony-free, meeting JEDEC JS709C and IPC-1752A requirements. The "Green Device" designation applies to all units manufactured after date code 8P11 (June 1, 2008), and full compliance documentation is available from Alpha & Omega Semiconductor.

Can the AOL1424 be used in avalanche mode for energy clamping?

Yes-the AOL1424 is fully characterized for repetitive avalanche operation with I_AR = 30 A and E_AR = 135 mJ (L = 0.3 mH). These ratings assume T_J(start) = 25°C and low-duty-cycle pulses; sustained avalanche use requires thermal modeling to avoid exceeding T_J(max) = 175°C.

What is the body-diode forward voltage of the AOL1424 at 1 A and 25°C?

The body-diode forward voltage (V_SD) of the AOL1424 is 0.7–1.0 V at I_S = 1 A and T_J = 25°C. This low V_SD reduces conduction loss during freewheeling intervals, especially in synchronous buck converters operating at light loads where the high-side FET is off.

AOL1424 Specifications

Product attributes: Attribute value

Manufacturer:: Alpha & Omega Semiconductor Inc.

Series:: -

Package/Case:: 3-PowerSMD, Flat Leads

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 30 V

Current - Continuous Drain (Id) @ 25°C:: 15A (Ta), 70A (Tc)

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

Rds On (Max) @ Id, Vgs:: 6.5mOhm @ 20A, 10V

Vgs(th) (Max) @ Id:: 2.5V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 48 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 2170 pF @ 15 V

FET Feature:: -

Power Dissipation (Max):: 2.2W (Ta), 50W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: UltraSO-8™

AOL1424 FAQ

1.How can I place an order for AOL1424 through Aetrix?

Please submit a Request for Quotation (RFQ) for AOL1424 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 AOL1424 reliable?

The price and inventory of AOL1424 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOL1424 is usually 5 days.

3.What payment methods are accepted for AOL1424?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOL1424 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AOL1424?

AOL1424 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AOL1424 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 AOL1424?

For technical support, including AOL1424 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOL1424 requirements.

6.How does Aetrix verify that AOL1424 is sourced from the original manufacturer or authorized distributors?

All AOL1424 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 AOL1424 meets industry standards.

7.What is the process for return or replacement of AOL1424?

All AOL1424 units undergo pre-shipment inspection (PSI). If there is an issue with AOL1424, 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 AOL1424 part is unused and in its original packaging.

Return procedure for AOL1424:

1.Submit a request within 90 days.

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

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