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Alpha & Omega Semiconductor Inc. AOSP66406
- Part No.:
- AOSP66406
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- FETs, MOSFETs
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AOSP66406.pdf
- Description:
- N
- Quantity:
- Payment:
- Shipping:
Inventory:2,014
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Product details
Overview
AOSP66406 from Alpha & Omega Semiconductor is a 40V, 17A N-channel MOSFET using Trench Power AlphaSGT™ technology, featuring <6.6mΩ RDS(ON) at VGS=10V and logic-level gate drive compatibility (VGS(th) = 1.5–2.5V). It delivers high-frequency switching performance with Qg(10V) = 20–30nC and is rated for synchronous rectification in DC-DC converters.
For engineers reviewing the AOSP66406 datasheet, pinout, applications, or equivalent options, key selection criteria include its SO-8 package thermal resistance (RθJA = 75°C/W), avalanche energy rating (EAS = 60mJ), body-diode reverse recovery charge (Qrr = 21nC), and 100% UIS-tested reliability for motor drive and power supply designs.
Technical Context
This MOSFET employs Alpha & Omega's proprietary AlphaSGT™ trench-gate structure to achieve low gate charge × RDS(ON) figure-of-merit (FOM), enabling efficient high-frequency operation. Its logic-level gate threshold (1.5–2.5V) ensures direct drive from 3.3V/5V microcontrollers without level-shifting circuitry.
The device integrates a robust body diode with trr = 11ns and Qrr = 21nC under IF = 17A, di/dt = 500A/μs conditions, supporting fast-recovery requirements in synchronous buck topologies. Thermal design is enabled by validated RθJL = 16°C/W and RθJA = 75°C/W (1in² FR-4, 2oz Cu).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 40V - Maximum drain-source blocking voltage for 12V/24V bus applications |
| ID (VGS=10V) | 17A - Continuous current capability at TA=25°C, derated to 13A at 70°C |
| RDS(ON) (VGS=10V) | <6.6mΩ - Enables ≤1.1W conduction loss at 17A, critical for thermally constrained PCBs |
| RDS(ON) (VGS=4.5V) | <10mΩ - Ensures usable on-resistance with 3.3V logic-level drive |
| Qg(10V) | 20–30nC - Low gate charge supports >1MHz switching in high-efficiency SMPS |
| EAS | 60mJ - 100% unclamped inductive switching tested, suitable for motor flyback protection |
| tr/tf | 2ns/3ns - Ultra-fast switching minimizes overlap loss in synchronous rectifiers |
Pinout & Package
Package: SOIC-8 (SO-8), surface-mount, standard footprint per JEDEC MS-012.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| G | Gate | Control terminal; accepts logic-level (≥4.5V) or 10V drive; Rg = 0.9–2.7Ω |
| S | Source | Reference node for gate drive; tied to power ground in low-side switch configuration |
| D | Drain | High-current output; four parallel pins (D1–D4) provide low-inductance, high-current path |
| - | Thermal Pad (exposed bottom) | Electrically connected to drain; requires soldered thermal pad for RθJA = 75°C/W performance |
Key Features
| Feature | Design Value |
|---|---|
| Trench Power AlphaSGT™ Technology | Enables sub-7mΩ RDS(ON) at 40V while maintaining low Qg, optimizing FOM for high-frequency power stages |
| Logic-Level Gate Drive | VGS(th) = 1.5–2.5V allows direct interface with 3.3V/5V MCUs, eliminating gate driver ICs in cost-sensitive designs |
| 100% UIS Tested | Guarantees ruggedness against inductive load transients up to EAS = 60mJ, critical for motor control and automotive loads |
| Low Qrr Body Diode | Qrr = 21nC and trr = 11ns reduce switching losses and EMI in synchronous rectification |
| RoHS & Halogen-Free | Complies with environmental regulations for industrial, computing, and consumer end equipment |
Applications
| DC-DC Synchronous Buck Converter | Brushed DC Motor Driver |
|---|---|
Use Scenario: High-efficiency 12V-to-5V/3.3V point-of-load converter in networking equipment. IC Role / Device Role / Timing Role: High-side or low-side synchronous rectifier MOSFET, switching at 500kHz–1MHz. Use Value: Sub-7mΩ RDS(ON) and 2ns rise time minimize conduction and switching losses, achieving >95% efficiency at 15A load. | Use Scenario: H-bridge driver for 24V brushed motors in robotics and industrial actuators. IC Role / Device Role / Timing Role: Low-side switch controlling motor current direction and PWM speed regulation. Use Value: 100% UIS-tested ruggedness withstands back-EMF during rapid direction reversal; logic-level gate enables direct MCU control. |
| USB-C Power Delivery Adapter | LED Constant-Current Driver |
Use Scenario: Secondary-side synchronous rectifier in 65W USB-PD AC-DC adapter. IC Role / Device Role / Timing Role: Synchronous rectifier replacing Schottky diode in LLC or QR flyback topology. Use Value: Qrr = 21nC and fast trr = 11ns suppress voltage spikes and reduce EMI, easing compliance with CISPR-32. | Use Scenario: High-side constant-current switch for multi-string LED lighting in commercial fixtures. IC Role / Device Role / Timing Role: PWM-controlled current regulator operating in linear or switched mode. Use Value: RDS(ON) <10mΩ at 4.5V ensures stable current regulation with minimal thermal drift across ambient temperatures. |
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 | RDS(ON) = 7.5mΩ @ VGS=10V; Qg = 34nC; SO-8 package | Higher gate charge increases switching loss above 300kHz; lower avalanche rating (EAS = 42mJ) | Prefer AOSP66406 for >500kHz designs requiring lower Qg and higher ruggedness. |
| DMN3026LSD-13 | RDS(ON) = 6.8mΩ @ VGS=10V; Qg = 22nC; same SO-8 footprint | Lower VDS rating (30V); not rated for 40V bus systems or 100% UIS testing | Select AOSP66406 when 40V blocking and full UIS qualification are required for industrial motor drives. |
Compared with IRF7470PBF and DMN3026LSD-13, the AOSP66406 offers superior FOM (Qg × RDS(ON)), 40V rating with full UIS validation, and tighter VGS(th) distribution - making it optimal for high-reliability, high-frequency 12–24V power stages where thermal margin and transient robustness are critical.
Availability
AOSP66406 is available at Aetrix Electronics and suitable for DC-DC converters, brushed DC motor drivers, and USB-C power delivery adapters requiring stable component supply, consistent parametric performance, and long-term lifecycle support.
Supply support for AOSP66406 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 AOSP66406 belongs to AOS's AlphaSGT™ logic-level MOSFET product line, engineered specifically for high-efficiency, high-frequency switching in space-constrained power supplies and motor control systems.
FAQ
What is the maximum continuous drain current rating for AOSP66406 at 70°C ambient temperature?
The AOSP66406 has a continuous drain current rating of 13A at TA = 70°C, derated from 17A at 25°C per its absolute maximum ratings table. This value assumes proper PCB thermal design with 1in² 2oz copper and accounts for junction temperature limits of 150°C. The AOSP66406 datasheet specifies this derating curve in Section 1 (Absolute Maximum Ratings) and Figure 9 (Safe Operating Area).
Does AOSP66406 support 3.3V logic-level gate drive in practice?
Yes, the AOSP66406 supports 3.3V logic-level gate drive due to its guaranteed gate threshold voltage range of 1.5–2.5V and RDS(ON) <10mΩ at VGS = 4.5V. At 3.3V, it achieves usable conduction (RDS(ON) ≈ 12–15mΩ per typical curves in Figure 5), making it viable for direct MCU drive in non-critical efficiency applications. The AOSP66406 datasheet confirms this in Electrical Characteristics and Figure 5.
What is the thermal resistance from junction to ambient (RθJA) for AOSP66406 under standard test conditions?
The AOSP66406 has a measured RθJA of 75°C/W when mounted on a 1in² FR-4 board with 2oz copper in still air at TA = 25°C. This value is specified in the Absolute Maximum Ratings table and footnote A of the AOSP66406 datasheet. Actual system-level RθJA will vary based on PCB layout, copper area, and airflow.
Is AOSP66406 qualified for automotive applications?
No, the AOSP66406 is not AEC-Q101 qualified and is intended for industrial, computing, and consumer applications only. Its datasheet does not list automotive stress test results, temperature grade extensions beyond –55°C to +150°C, or PPAP documentation. For automotive use, designers should select AOS's AEC-Q101-qualified equivalents such as the AON6254 or consult AOS's automotive-grade portfolio separately from the AOSP66406.
How is the body diode performance of AOSP66406 characterized for synchronous rectification?
The AOSP66406 body diode is characterized with VSD = 0.7–1.0V at IS = 1A, trr = 11ns, and Qrr = 21nC under IF = 17A and di/dt = 500A/μs - values confirmed in the Electrical Characteristics table and Figure 6. These parameters enable low-loss, low-EMI synchronous rectification in buck and flyback converters, distinguishing the AOSP66406 from standard MOSFETs with slower recovery.
AOSP66406 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Series:
- AlphaSGT™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- FET Type:
- N-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 40 V
- Current - Continuous Drain (Id) @ 25°C:
- 17A (Ta)
- Drive Voltage (Max Rds On, Min Rds On):
- 4.5V, 10V
- Rds On (Max) @ Id, Vgs:
- 6.6mOhm @ 17A, 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):
- 3.1W (Ta)
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AOSP66406 FAQ
1.How can I place an order for AOSP66406 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOSP66406 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 AOSP66406 reliable?
The price and inventory of AOSP66406 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOSP66406 is usually 5 days.
3.What payment methods are accepted for AOSP66406?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOSP66406 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOSP66406?
AOSP66406 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOSP66406 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 AOSP66406?
For technical support, including AOSP66406 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOSP66406 requirements.
6.How does Aetrix verify that AOSP66406 is sourced from the original manufacturer or authorized distributors?
All AOSP66406 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 AOSP66406 meets industry standards.
7.What is the process for return or replacement of AOSP66406?
All AOSP66406 units undergo pre-shipment inspection (PSI). If there is an issue with AOSP66406, 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 AOSP66406 part is unused and in its original packaging.
Return procedure for AOSP66406:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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