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

Alpha & Omega Semiconductor Inc. AOL1454G

Name: AOL1454G
Brand: Alpha & Omega Semiconductor Inc.
SKU: AOL1454G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AOL1454G

Manufacturer:: Alpha & Omega Semiconductor Inc.

Category:: FETs, MOSFETs

Package:: 3-PowerSMD, Flat Leads

Datasheet:: AOL1454G.pdf

Description:: MOSFET N-CH 40V 25A/46A ULTRASO8

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Product details

Overview

AOL1454G from Alpha & Omega Semiconductor is a 40V N-Channel enhancement-mode MOSFET using AlphaSGT™ trench power technology, rated for 46A continuous drain current at V_GS=10V, with R_DS(ON) < 5.9mΩ (V_GS=10V) and < 9.2mΩ (V_GS=4.5V), optimized for high-frequency switching in synchronous rectification and DC-motor driver circuits.

For engineers reviewing the AOL1454G datasheet, pinout, applications, or equivalent options, key selection criteria include logic-level gate drive compatibility (V_GS(th) = 1.5–2.5V), low gate charge × R_DS(ON) figure-of-merit (Q_g(10V) = 20–30nC), 100% UIS-tested ruggedness, and UltraSO-8™ package thermal performance (R_θJC = 2.4°C/W).

Technical Context

The AOL1454G employs AlphaSGT™ (Alpha Silicon Gate Trench) technology to achieve low on-resistance and high current density in a surface-mount UltraSO-8™ package. Its gate threshold voltage (1.5–2.5V) enables direct interfacing with 3.3V/5V logic controllers without level-shifting.

Dynamic parameters confirm suitability for hard-switching applications: t_D(on) = 7.5ns, t_D(off) = 23ns, Q_gd = 3nC, and C_iss = 1480pF at V_DS = 20V. The body diode exhibits V_SD = 0.7–1.0V at I_S = 1A and t_rr = 11ns with Q_rr = 21nC under specified di/dt conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	40V maximum - supports 24V industrial bus and 36V battery systems with margin
I_D (V_GS=10V)	46A continuous - enables high-current motor phases or power supply outputs
R_DS(ON) (V_GS=10V)	< 5.9mΩ - reduces conduction loss to < 12.5W at 46A, critical for thermal management
R_DS(ON) (V_GS=4.5V)	< 9.2mΩ - ensures robust operation with 5V microcontroller gate drive
Q_g(10V)	20–30nC - balances switching speed and gate driver power requirements
R_θJC	2.4°C/W - allows >20W dissipation with minimal heatsink when mounted to PCB copper
V_GS(th)	1.5–2.5V - guarantees turn-on with standard logic-level signals, no external bias needed

Pinout & Package

Package: UltraSO-8™ - thermally enhanced 8-pin SOIC variant with exposed drain pad (D) on bottom side for improved heat transfer to PCB ground plane.

Pin/Terminal	Circuit Role	Design Meaning
G	Gate	Control terminal; accepts logic-level input (1.5–2.5V threshold); requires <30nC total gate charge
D (pins 1,2,3,4,7,8)	Drain	Main high-side power path; pins 1–4 and 7–8 internally paralleled to reduce resistance and inductance
S (pins 5,6)	Source	Power return and reference for gate drive; dual pins minimize source inductance in high-di/dt switching

Key Features

Feature	Design Value
AlphaSGT™ trench technology	Enables 46A rating in UltraSO-8™ footprint while maintaining R_DS(ON) < 5.9mΩ at 10V
100% UIS tested	Guarantees unclamped inductive switching survival up to E_AS = 60mJ (L = 0.3mH), critical for motor flyback protection
Logic-level gate drive	V_GS(th) range 1.5–2.5V ensures reliable turn-on with 3.3V/5V MCUs without gate drivers
Low Q_g × R_DS(ON) FOM	~120–177 mΩ·nC - optimizes trade-off between conduction loss and switching loss in 100–500kHz applications
RoHS & halogen-free	Complies with IPC-J-STD-609 Class 1 moisture sensitivity and JEDEC J-STD-020 reflow profile

Applications

Brushed DC Motor Driver	Synchronous Buck Converter
Use Scenario: H-bridge or half-bridge control of 24V/36V brushed motors in power tools and robotics. IC Role / Device Role / Timing Role: High-side or low-side switching element handling peak currents up to 46A with fast turn-on/off timing. Use Value: Low R_DS(ON) minimizes I²R heating during PWM-driven stall conditions; 100% UIS testing prevents failure during motor commutation spikes.	Use Scenario: Secondary-side synchronous rectifier in isolated DC-DC converters for telecom and server PSUs. IC Role / Device Role / Timing Role: Replacement for Schottky diodes to reduce forward voltage drop and improve efficiency at 12V–48V output rails. Use Value: V_SD = 0.7–1.0V and t_rr = 11ns enable >2% efficiency gain over 40V Schottkys at 20A load; low Q_g supports 300kHz+ operation.
Industrial PLC Output Module	LED Constant-Current Driver
Use Scenario: Solid-state relay replacement in programmable logic controller digital output cards driving solenoids and valves. IC Role / Device Role / Timing Role: Load switch with integrated avalanche energy handling for inductive load turn-off transients. Use Value: E_AS = 60mJ and 100% R_g testing ensure reliability across 100,000+ switching cycles with 24V/2A inductive loads.	Use Scenario: High-current LED string switching in architectural and stage lighting systems (e.g., 36V, 20A arrays). IC Role / Device Role / Timing Role: PWM-controlled current sink with fast rise/fall times to eliminate LED flicker at dimming frequencies >1kHz. Use Value: t_r = 2ns and t_f = 3ns support clean 10kHz PWM edges; low R_DS(ON) maintains stable current regulation with <0.1V dropout.

Brushed DC Motor Driver

Synchronous Buck Converter

Use Scenario: H-bridge or half-bridge control of 24V/36V brushed motors in power tools and robotics.

IC Role / Device Role / Timing Role: High-side or low-side switching element handling peak currents up to 46A with fast turn-on/off timing.

Use Value: Low R_DS(ON) minimizes I²R heating during PWM-driven stall conditions; 100% UIS testing prevents failure during motor commutation spikes.

Use Scenario: Secondary-side synchronous rectifier in isolated DC-DC converters for telecom and server PSUs.

IC Role / Device Role / Timing Role: Replacement for Schottky diodes to reduce forward voltage drop and improve efficiency at 12V–48V output rails.

Use Value: V_SD = 0.7–1.0V and t_rr = 11ns enable >2% efficiency gain over 40V Schottkys at 20A load; low Q_g supports 300kHz+ operation.

Industrial PLC Output Module

LED Constant-Current Driver

Use Scenario: Solid-state relay replacement in programmable logic controller digital output cards driving solenoids and valves.

IC Role / Device Role / Timing Role: Load switch with integrated avalanche energy handling for inductive load turn-off transients.

Use Value: E_AS = 60mJ and 100% R_g testing ensure reliability across 100,000+ switching cycles with 24V/2A inductive loads.

Use Scenario: High-current LED string switching in architectural and stage lighting systems (e.g., 36V, 20A arrays).

IC Role / Device Role / Timing Role: PWM-controlled current sink with fast rise/fall times to eliminate LED flicker at dimming frequencies >1kHz.

Use Value: t_r = 2ns and t_f = 3ns support clean 10kHz PWM edges; low R_DS(ON) maintains stable current regulation with <0.1V dropout.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
IRF7470PBF	R_DS(ON) = 6.5mΩ @ 10V; Q_g = 32nC; SO-8 package; no UIS rating specified	Lacks 100% UIS test documentation; higher gate charge increases driver losses	Acceptable where avalanche stress is absent and gate drive capability exceeds 32nC
DMN3020LFG-7	R_DS(ON) = 5.2mΩ @ 10V; Q_g = 15nC; SOT-23-6 package; 30V rating	Lower voltage rating limits use to ≤24V systems; smaller package restricts power handling	Preferred only for space-constrained ≤24V designs needing ultra-low Q_g

Compared with IRF7470PBF and DMN3020LFG-7, the AOL1454G delivers superior ruggedness (60mJ UIS), broader voltage margin (40V vs. 30V), and balanced FOM for 24–36V industrial switching-making it optimal for motor drives and PLC outputs where reliability under transient stress is non-negotiable.

Availability

AOL1454G is available at Aetrix Electronics and suitable for brushed DC motor drivers, synchronous buck converters, industrial PLC output modules, and high-current LED drivers requiring stable component supply and long-term manufacturability.

Supply support for AOL1454G 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 ICs for computing, consumer, industrial, and automotive markets.

The AOL1454G belongs to AOS's AlphaSGT™ ultra-low-R_DS(ON) MOSFET product line, engineered specifically for high-current, high-reliability switching in industrial motor control and power conversion where thermal performance and transient ruggedness are critical.

FAQ

What is the maximum continuous drain current rating for the AOL1454G?

The AOL1454G is rated for 46A continuous drain current at T_C = 25°C with V_GS = 10V. At T_C = 100°C, the derated current is 20.5A per the datasheet's thermal curves. This rating is package-limited and assumes proper PCB copper area for heat dissipation. The AOL1454G must be mounted on ≥1 in² of 2 oz. copper to achieve published ratings.

Does the AOL1454G support logic-level gate drive from a 3.3V microcontroller?

Yes, the AOL1454G supports logic-level drive: its gate threshold voltage V_GS(th) is specified from 1.5V to 2.5V at 250μA, ensuring reliable turn-on with 3.3V GPIO. At V_GS = 4.5V, R_DS(ON) remains low (<9.2mΩ), enabling full 46A conduction without external level-shifting. The AOL1454G thus eliminates need for gate driver ICs in many MCU-based designs.

What is the significance of "100% UIS tested" for the AOL1454G?

"100% UIS tested" means every AOL1454G unit undergoes unclamped inductive switching validation at E_AS = 60mJ (L = 0.3mH), verifying single-pulse avalanche energy capability. This ensures robustness against inductive kickback in motor and relay switching-critical where snubbers are omitted. The AOL1454G's guaranteed UIS performance differentiates it from non-tested MOSFETs that may fail prematurely under real-world transients.

How does the UltraSO-8™ package of the AOL1454G improve thermal performance versus standard SO-8?

The UltraSO-8™ package features an exposed drain pad on the bottom surface, reducing junction-to-case thermal resistance to R_θJC = 2.4°C/W-nearly 3× better than standard SO-8 (~7°C/W). This allows the AOL1454G to dissipate >20W with minimal PCB heatsinking. When soldered to ≥1 in² of 2 oz. copper, the AOL1454G achieves effective R_θJA ≈ 15°C/W, enabling higher sustained current in compact industrial layouts.

Can the AOL1454G be used as a synchronous rectifier in a 48V input buck converter?

Yes-the AOL1454G is well-suited as a secondary-side synchronous rectifier in buck converters with ≤40V output. Its 40V V_DS rating provides margin for voltage overshoot, while low R_DS(ON) (<5.9mΩ) and fast switching (t_r/t_f = 2/3ns) reduce conduction and switching losses. For 48V input topologies, the AOL1454G is appropriate only on the output side; primary-side switches require higher V_DS ratings.

AOL1454G Specifications

Product attributes: Attribute value

Manufacturer:: Alpha & Omega Semiconductor Inc.

Series:: AlphaSGT™

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):: 40 V

Current - Continuous Drain (Id) @ 25°C:: 25A (Ta), 46A (Tc)

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

Rds On (Max) @ Id, Vgs:: 5.9mOhm @ 20A, 10V

Vgs(th) (Max) @ Id:: 2.5V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 30 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 1480 pF @ 20 V

FET Feature:: -

Power Dissipation (Max):: 6.2W (Ta), 52W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: UltraSO-8™

AOL1454G FAQ

1.How can I place an order for AOL1454G through Aetrix?

Please submit a Request for Quotation (RFQ) for AOL1454G 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 AOL1454G reliable?

The price and inventory of AOL1454G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOL1454G is usually 5 days.

3.What payment methods are accepted for AOL1454G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOL1454G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AOL1454G?

AOL1454G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AOL1454G 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 AOL1454G?

For technical support, including AOL1454G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOL1454G requirements.

6.How does Aetrix verify that AOL1454G is sourced from the original manufacturer or authorized distributors?

All AOL1454G 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 AOL1454G meets industry standards.

7.What is the process for return or replacement of AOL1454G?

All AOL1454G units undergo pre-shipment inspection (PSI). If there is an issue with AOL1454G, 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 AOL1454G part is unused and in its original packaging.

Return procedure for AOL1454G:

1.Submit a request within 90 days.

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

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