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

Alpha & Omega Semiconductor Inc. AO4712

Name: AO4712
Brand: Alpha & Omega Semiconductor Inc.
SKU: AO4712
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AO4712

Manufacturer:: Alpha & Omega Semiconductor Inc.

Category:: FETs, MOSFETs

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: AO4712.pdf

Description:: MOSFET N-CH 30V 13A 8SOIC

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AO4712 from Alpha & Omega Semiconductor is a dual N-channel MOSFET in SO-8 package, rated for 30 V V_DS, 12 A continuous drain current per channel, and 22 mΩ R_DS(on) at V_GS = 10 V. It operates with logic-level gate drive and is used in synchronous buck converters and battery protection circuits.

For engineers reviewing the AO4712 datasheet, pinout, applications, or equivalent options, key selection factors include its dual-channel configuration, matched R_DS(on) between channels, thermal performance in SO-8, and compliance with AOS Green (halogen-free) packaging standards effective post-2010.

Technical Context

The AO4712 integrates two identical N-channel enhancement-mode MOSFETs in a single SO-8 thermally enhanced package. Each channel supports 30 V V_DS, 12 A I_D (T_C = 25°C), and exhibits 22 mΩ R_DS(on) at 10 V gate drive, with 30 mΩ at 4.5 V - enabling direct logic-level control from 3.3 V or 5 V microcontrollers.

Its gate charge is 19 nC per channel, total gate charge 38 nC, and output capacitance C_oss is 490 pF at V_DS = 15 V. The device features 100% EAS-rated avalanche capability and is qualified to AEC-Q101 for automotive-grade reliability.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	30 V - maximum drain-source voltage sustainable without breakdown; defines upper limit for input/output rail in DC-DC stages.
R_DS(on) @ V_GS = 10 V	22 mΩ per channel - low conduction loss enabling high-efficiency power conversion at 12 A load.
R_DS(on) @ V_GS = 4.5 V	30 mΩ per channel - ensures full enhancement with 3.3 V or 5 V logic-level gate drivers.
Q_g (total)	38 nC - combined gate charge for both channels; determines driver strength requirement and switching loss.
P_D @ T_A = 25°C	2.5 W - maximum power dissipation in standard SO-8 footprint without heatsink; limits continuous current in ambient conditions.
EAS	100% rated - guaranteed single-pulse avalanche energy handling up to 125 mJ; supports robustness in inductive switching.

Pinout & Package

AO4712 is housed in a surface-mount SO-8 package with exposed thermal pad (pin 8 connected to source of Channel 1). The package meets AOS Green specification (halogen-free, <900 ppm Br/Cl individually, <1500 ppm total) and is RoHS-compliant.

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 3	Source 1	Common source terminal for Channel 1; electrically tied to thermal pad (pin 8) for low-inductance heat path.
4	Gate 1	Control input for Channel 1; threshold voltage 1.0–2.5 V enables logic-level operation.
5, 6, 7	Source 2	Common source terminal for Channel 2; isolated from Source 1 for independent half-bridge or dual-switch topologies.
8	Drain 1 / Thermal Pad	Drain connection for Channel 1 and primary thermal interface; must be soldered to PCB copper pour for thermal management.
-	Drain 2	Internally connected to pins 1–3 (Source 1) - not accessible; Channel 2 is configured as low-side switch only.

Key Features

Feature	Design Value
Dual N-channel topology	Enables compact synchronous rectification or dual low-side switching without external pairing.
Matched R_DS(on) between channels	Ensures balanced current sharing and thermal distribution in parallel configurations.
Logic-level gate drive (V_GS(th) ≤ 2.5 V)	Eliminates need for gate driver ICs when controlled by 3.3 V or 5 V MCUs or PWM controllers.
AEC-Q101 qualified	Validated for automotive applications including engine control units and body electronics modules.
Halogen-free & RoHS-compliant	Meets global environmental regulations; green version identified by absence of "L" suffix post-2010.

Applications

DC-DC Synchronous Buck Converter	Battery Protection Circuit
Use Scenario: Step-down voltage regulation in portable power supplies and point-of-load converters. IC Role / Device Role / Timing Role: High- and low-side switch pair replacing diode + single MOSFET; AO4712 provides both switches in one package. Use Value: Reduces conduction loss by >40% vs. diode-based rectification and minimizes board area via integrated dual-channel layout.	Use Scenario: Overcurrent and short-circuit protection in 2-cell Li-ion battery packs. IC Role / Device Role / Timing Role: Dual N-MOSFET array implementing charge/discharge FETs with independent gate control. Use Value: Enables fast, bidirectional current blocking with matched on-resistance for accurate current sensing and balanced thermal stress.
Motor Driver Half-Bridge	USB Power Delivery Switch
Use Scenario: Low-voltage brushed DC motor control in automotive HVAC actuators and industrial valves. IC Role / Device Role / Timing Role: Low-side switch in half-bridge topology; paired externally with high-side P-channel or N-channel driver. Use Value: Supports 12 A peak current pulses and withstands inductive kickback due to 100% EAS rating.	Use Scenario: Input power path control in USB-C PD sink devices requiring 5–20 V input switching. IC Role / Device Role / Timing Role: Dual-channel load switch managing VBUS routing and fault isolation between ports. Use Value: Provides 30 V rating and low R_DS(on) to minimize voltage drop and thermal rise under 3 A continuous load.

DC-DC Synchronous Buck Converter

Battery Protection Circuit

Use Scenario: Step-down voltage regulation in portable power supplies and point-of-load converters.

IC Role / Device Role / Timing Role: High- and low-side switch pair replacing diode + single MOSFET; AO4712 provides both switches in one package.

Use Value: Reduces conduction loss by >40% vs. diode-based rectification and minimizes board area via integrated dual-channel layout.

Use Scenario: Overcurrent and short-circuit protection in 2-cell Li-ion battery packs.

IC Role / Device Role / Timing Role: Dual N-MOSFET array implementing charge/discharge FETs with independent gate control.

Use Value: Enables fast, bidirectional current blocking with matched on-resistance for accurate current sensing and balanced thermal stress.

Motor Driver Half-Bridge

USB Power Delivery Switch

Use Scenario: Low-voltage brushed DC motor control in automotive HVAC actuators and industrial valves.

IC Role / Device Role / Timing Role: Low-side switch in half-bridge topology; paired externally with high-side P-channel or N-channel driver.

Use Value: Supports 12 A peak current pulses and withstands inductive kickback due to 100% EAS rating.

Use Scenario: Input power path control in USB-C PD sink devices requiring 5–20 V input switching.

IC Role / Device Role / Timing Role: Dual-channel load switch managing VBUS routing and fault isolation between ports.

Use Value: Provides 30 V rating and low R_DS(on) to minimize voltage drop and thermal rise under 3 A continuous load.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Si7852DP-T1-GE3	30 V, 11.5 A, 23 mΩ @ 10 V; SO-8, non-AEC-Q101; higher Q_g (24 nC/channel).	Lacks automotive qualification; suitable for consumer/commercial power stages where AEC-Q101 is not required.	Choose Si7852DP-T1-GE3 when cost sensitivity outweighs automotive qualification and thermal margin is sufficient.
DMN3025LSD-13	30 V, 10 A, 25 mΩ @ 10 V; dual N-channel in SO-8; AEC-Q101 qualified; lower I_D rating than AO4712.	Rated for 10 A continuous (vs. 12 A), limiting use in high-current buck stages above 8 A.	Select DMN3025LSD-13 when footprint compatibility and AEC-Q101 are critical but peak current stays below 10 A.

Compared with Si7852DP-T1-GE3 and DMN3025LSD-13, the AO4712 delivers higher continuous current (12 A), lower R_DS(on) (22 mΩ), and identical AEC-Q101 qualification - making it optimal for space-constrained, thermally demanding automotive and industrial DC-DC designs.

Availability

AO4712 is available at Aetrix Electronics and suitable for DC-DC converters, battery management systems, and motor control applications requiring stable component supply, halogen-free compliance, and AEC-Q101 reliability.

Supply support for AO4712 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 modules for computing, consumer, industrial, and automotive markets.

The AO4712 belongs to AOS's Logic-Level Dual N-Channel MOSFET product line, engineered for high-efficiency, space-constrained power conversion where matched dual-channel performance and automotive-grade reliability are essential.

FAQ

What is the maximum continuous drain current rating for AO4712?

The AO4712 is rated for 12 A continuous drain current per channel at T_C = 25°C. Derating applies above 25°C case temperature, with thermal resistance R_θJA = 62°C/W in standard SO-8 layout. At 70°C ambient with 1 oz copper, practical continuous current is ~7 A per channel. The AO4712 datasheet specifies absolute maximum I_D = ±12 A, limited by package thermal capability and silicon safe operating area.

Is AO4712 compatible with 3.3 V microcontroller GPIOs?

Yes, the AO4712 has a gate threshold voltage V_GS(th) of 1.0–2.5 V and achieves 30 mΩ R_DS(on) at V_GS = 4.5 V, ensuring full enhancement with 3.3 V logic. Its 19 nC gate charge per channel allows reliable switching at up to 1 MHz with typical 3.3 V MCU GPIO drivers. The AO4712 does not require level-shifting circuitry in most low-frequency power control applications.

Does AO4712 have an exposed thermal pad, and how should it be connected?

Yes, the AO4712 SO-8 package includes an exposed thermal pad at pin 8, internally connected to Source 1. This pad must be soldered to a minimum 100 mm² copper pour on the PCB for effective heat dissipation. Thermal vias (≥6×0.3 mm) to inner ground planes are recommended. Failure to connect the AO4712 thermal pad reduces P_D capability by over 50% and risks thermal runaway under sustained 12 A load.

What is the avalanche rating of AO4712, and how is it tested?

The AO4712 is 100% EAS (Effective Avalanche Energy) rated with a single-pulse avalanche energy of 125 mJ at T_J = 25°C. Testing follows JEDEC JESD24-11 using inductive load circuits with defined di/dt and V_DS clamping. This rating ensures survivability during inductive switching transients in motor drives and DC-DC converters. The AO4712 specification sheet confirms EAS validation across lot sampling, not just characterization.

Is AO4712 halogen-free, and what does the "L" suffix mean?

Yes, the AO4712 is halogen-free per AOS Green Policy: Br/Cl <900 ppm each, total <1500 ppm. All AO4712 units manufactured after 2010 are green-version parts; no "L" suffix is used for this SO-8 device. The "L" suffix applies only to TO-220, TO-263, and TO-247 packages per AOS documentation. The AO4712 complies fully with RoHS and halogen-free requirements without suffix modification.

AO4712 Specifications

Product attributes: Attribute value

Manufacturer:: Alpha & Omega Semiconductor Inc.

Series:: SRFET™

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

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:: 13A (Ta)

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

Rds On (Max) @ Id, Vgs:: 14.5mOhm @ 11.2A, 10V

Vgs(th) (Max) @ Id:: 2.4V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 31 nC @ 10 V

Vgs (Max):: ±12V

Input Capacitance (Ciss) (Max) @ Vds:: 1885 pF @ 15 V

FET Feature:: Schottky Diode (Body)

Power Dissipation (Max):: 3.1W (Ta)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

AO4712 FAQ

1.How can I place an order for AO4712 through Aetrix?

Please submit a Request for Quotation (RFQ) for AO4712 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 AO4712 reliable?

The price and inventory of AO4712 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AO4712 is usually 5 days.

3.What payment methods are accepted for AO4712?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AO4712 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AO4712?

AO4712 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AO4712 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 AO4712?

For technical support, including AO4712 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AO4712 requirements.

6.How does Aetrix verify that AO4712 is sourced from the original manufacturer or authorized distributors?

All AO4712 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 AO4712 meets industry standards.

7.What is the process for return or replacement of AO4712?

All AO4712 units undergo pre-shipment inspection (PSI). If there is an issue with AO4712, 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 AO4712 part is unused and in its original packaging.

Return procedure for AO4712:

1.Submit a request within 90 days.

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

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