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

Alpha & Omega Semiconductor Inc. AOY66920

Name: AOY66920
Brand: Alpha & Omega Semiconductor Inc.
SKU: AOY66920
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AOY66920

Manufacturer:: Alpha & Omega Semiconductor Inc.

Category:: FETs, MOSFETs

Package:: TO-251-3 Stub Leads, IPAK

Datasheet:: AOY66920.pdf

Description:: N

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AOY66920 from Alpha & Omega Semiconductor is a 100V, 70A N-channel Trench Power AlphaSGT™ MOSFET in TO-251B (IPAK short lead) package, featuring <8.2mΩ R_DS(ON) at V_GS=10V and logic-level gate drive compatibility down to 4.5V. It delivers high-frequency switching performance with 35–50nC total gate charge and is 100% UIS and R_g tested for robustness in synchronous rectification and DC-DC converter primary-side switching.

For engineers reviewing the AOY66920 datasheet, pinout, applications, or equivalent options, key selection criteria include its 100V breakdown rating, 70A continuous drain current at T_C=100°C, low 1.4°C/W junction-to-case thermal resistance, and validated avalanche energy (E_AS=72mJ, L=0.1mH), critical for hard-switching power supplies and motor control inverters.

Technical Context

The AOY66920 employs AlphaSGT™ trench-gate superjunction technology to achieve optimized figure-of-merit (Q_g × R_DS(ON)), enabling high-efficiency operation in continuous conduction mode (CCM) and transition-mode (TM) topologies. Its gate threshold voltage (1.5–2.5V) ensures reliable turn-on with standard logic-level drivers, while low Crss (13pF) and fast switching times (t_D(on)=10ns, t_f=6ns) support >500kHz operation.

Thermally, the device is characterized by R_θJC=1.4°C/W and R_θJA=50°C/W (on 1in² FR-4, 2oz Cu), with SOA limited by R_DS(ON) at DC and pulse width at higher currents. Body diode parameters-V_SD=0.7–1.0V, Q_rr=170nC, t_rr=34ns-are specified under IF=20A/di/dt=500A/μs, supporting synchronous rectification with minimized reverse recovery loss.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	100V - Withstands up to 100V drain-source blocking voltage, suitable for 48V input industrial DC-DC and 100V bus motor drives.
I_D (T_C=100°C)	70A - Continuous drain current rating at case temperature 100°C, defining maximum steady-state conduction capability with heatsinking.
R_DS(ON) (V_GS=10V)	<8.2mΩ - Low on-resistance minimizes I²R conduction loss in high-current paths, e.g., server VRMs and solar inverters.
Q_g(10V)	35–50nC - Total gate charge determines driver strength requirement and switching loss trade-off in hard-switched converters.
E_AS	72mJ (L=0.1mH) - Unclamped inductive switching energy rating confirms ruggedness against transient overcurrents without external snubbers.
R_θJC	1.4°C/W - Junction-to-case thermal resistance enables direct mounting to heatsinks for high-power dissipation up to 89W at T_C=25°C.
V_GS(th)	1.5–2.5V - Logic-compatible gate threshold allows use with 3.3V or 5V microcontrollers and gate drivers without level-shifting.

Pinout & Package

AOY66920 is housed in a TO-251B (IPAK short lead) surface-mount package with three terminals: Gate (G), Drain (D), and Source (S). The package features exposed drain pad for enhanced thermal conduction and mechanical stability in high-vibration environments.

Pin/Terminal	Circuit Role	Design Meaning
G	Gate	Control terminal accepting logic-level voltage (≤20V max); low R_g (0.5–1.7Ω) reduces gate ringing and EMI in fast-switching layouts.
D	Drain	Main high-side current path; electrically connected to exposed metal tab for thermal and electrical grounding in PCB layout.
S	Source	Reference node for gate drive and current sensing; tied to power ground plane to minimize common-source inductance during switching.

Key Features

Feature	Design Value
Trench Power AlphaSGT™ Technology	Enables superior R_DS(ON)/Q_g FOM vs. planar MOSFETs, reducing combined conduction and switching losses in high-frequency SMPS.
Logic-Level Gate Drive	Operates fully enhanced at V_GS ≥4.5V, eliminating need for dedicated gate driver ICs in cost-sensitive 3.3V/5V control systems.
100% UIS Tested	Each unit validated for unclamped inductive switching robustness, ensuring reliability in flyback, LLC, and half-bridge applications with inductive loads.
Low Crss / High g_FS	13pF reverse transfer capacitance and 65S forward transconductance improve Miller immunity and current gain linearity for stable gate control.
RoHS & Halogen-Free	Complies with environmental regulations for industrial, telecom, and consumer electronics manufacturing without compromising thermal or electrical performance.

Applications

Server Voltage Regulator Modules (VRMs)	Industrial DC-DC Converters
Use Scenario: High-current, multiphase buck converters delivering 50–100A at ≤1.2V to CPU/GPU cores. IC Role / Device Role / Timing Role: Primary-side high-side switch operating at 300–600kHz with synchronous rectification. Use Value: Low R_DS(ON) (<8.2mΩ) and low Q_g reduce conduction and switching losses, improving efficiency above 92% at full load.	Use Scenario: 48V-to-12V isolated or non-isolated converters powering PLCs, HMIs, and sensor nodes. IC Role / Device Role / Timing Role: Main switching element in active clamp forward or phase-shifted full-bridge topologies. Use Value: 100V V_DS rating accommodates 48V nominal bus with 100% surge margin; 100% UIS testing ensures field reliability under load dump.
Brushless DC Motor Controllers	Solar Microinverters
Use Scenario: 3-phase inverter stages driving 1–3kW BLDC motors in HVAC compressors and power tools. IC Role / Device Role / Timing Role: Half-bridge upper-leg switch with gate-driven bootstrap supply. Use Value: Fast t_f=6ns and low Q_gd=5nC minimize shoot-through risk and dead-time losses in 20–40kHz PWM operation.	Use Scenario: DC-AC conversion stage converting 30–60V PV string output to grid-synchronized 230V AC. IC Role / Device Role / Timing Role: High-side switch in interleaved boost or H-bridge inverter legs. Use Value: High E_AS=72mJ and rugged body diode (Q_rr=170nC) withstand repetitive partial shading-induced transients and reverse recovery stress.

Server Voltage Regulator Modules (VRMs)

Industrial DC-DC Converters

Use Scenario: High-current, multiphase buck converters delivering 50–100A at ≤1.2V to CPU/GPU cores.

IC Role / Device Role / Timing Role: Primary-side high-side switch operating at 300–600kHz with synchronous rectification.

Use Value: Low R_DS(ON) (<8.2mΩ) and low Q_g reduce conduction and switching losses, improving efficiency above 92% at full load.

Use Scenario: 48V-to-12V isolated or non-isolated converters powering PLCs, HMIs, and sensor nodes.

IC Role / Device Role / Timing Role: Main switching element in active clamp forward or phase-shifted full-bridge topologies.

Use Value: 100V V_DS rating accommodates 48V nominal bus with 100% surge margin; 100% UIS testing ensures field reliability under load dump.

Brushless DC Motor Controllers

Solar Microinverters

Use Scenario: 3-phase inverter stages driving 1–3kW BLDC motors in HVAC compressors and power tools.

IC Role / Device Role / Timing Role: Half-bridge upper-leg switch with gate-driven bootstrap supply.

Use Value: Fast t_f=6ns and low Q_gd=5nC minimize shoot-through risk and dead-time losses in 20–40kHz PWM operation.

Use Scenario: DC-AC conversion stage converting 30–60V PV string output to grid-synchronized 230V AC.

IC Role / Device Role / Timing Role: High-side switch in interleaved boost or H-bridge inverter legs.

Use Value: High E_AS=72mJ and rugged body diode (Q_rr=170nC) withstand repetitive partial shading-induced transients and reverse recovery stress.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Infineon IPP040N10N5	Same V_DS=100V, R_DS(ON)=4.0mΩ @10V (lower), but Q_g=62nC (higher); TO-220 package.	Higher conduction efficiency but larger gate drive demand; requires through-hole PCB assembly.	Select when lowest R_DS(ON) dominates over switching speed and SMT footprint constraints.
Vishay SIHF100N10E	V_DS=100V, R_DS(ON)=9.5mΩ @10V (slightly higher), Q_g=45nC; TO-220AB package, no RoHS/halogen-free guarantee.	Similar thermal performance but lacks 100% UIS test and halogen-free compliance.	Choose only for legacy designs where qualification to AEC-Q101 or environmental standards is not required.

Compared with IPP040N10N5 and SIHF100N10E, the AOY66920 offers optimal balance of SMT compatibility, logic-level drive, and ruggedness certification-making it preferred for new industrial and renewable energy designs requiring compact, reliable, and compliant high-current switching.

Availability

AOY66920 is available at Aetrix Electronics and suitable for server VRMs, industrial DC-DC converters, and BLDC motor controllers requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for AOY66920 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, industrial, and automotive markets.

The AOY66920 belongs to AOS' AlphaSGT™ family, engineered specifically for high-efficiency, high-frequency power conversion where low R_DS(ON), fast switching, and ruggedness are essential.

FAQ

What is the maximum continuous drain current rating for AOY66920 at 100°C case temperature?

The AOY66920 supports 70A continuous drain current at T_C=100°C, as specified in its Absolute Maximum Ratings table. This rating assumes proper PCB copper area and thermal interface to maintain junction temperature below 150°C. Derating applies above 100°C case temperature per Figure 13 in the datasheet.

Does AOY66920 support logic-level gate drive, and what is its gate threshold voltage range?

Yes, AOY66920 supports logic-level gate drive with a gate threshold voltage (V_GS(th)) of 1.5–2.5V at T_J=25°C. This allows full enhancement using standard 3.3V or 5V microcontroller outputs or gate drivers without level-shifting circuitry, simplifying control-stage design for the AOY66920.

What is the R_DS(ON) of AOY66920 at 4.5V gate drive, and why does it matter?

The AOY66920 exhibits R_DS(ON) <10.7mΩ at V_GS=4.5V, enabling efficient operation with low-voltage gate drivers. This parameter directly impacts conduction loss in battery-powered or low-voltage control systems, making the AOY66920 suitable for applications where 5V logic interfaces drive the MOSFET directly.

Is AOY66920 qualified for avalanche operation, and what is its rated E_AS?

Yes, AOY66920 is 100% tested for unclamped inductive switching (UIS) and rated for E_AS=72mJ with L=0.1mH. This specification validates its ability to absorb inductive energy safely during transient overcurrent events-critical for reliability in flyback, boost, and motor drive circuits using the AOY66920.

What package type and thermal resistance does AOY66920 use, and how does it affect heatsink design?

AOY66920 uses the TO-251B (IPAK short lead) package with R_θJC=1.4°C/W. This low junction-to-case resistance enables effective heat transfer to an external heatsink or copper pour, allowing up to 89W power dissipation at T_C=25°C. Designers must ensure low-thermal-resistance interface between the exposed drain pad and heatsink for optimal AOY66920 performance.

AOY66920 Specifications

Product attributes: Attribute value

Manufacturer:: Alpha & Omega Semiconductor Inc.

Series:: AlphaSGT™

Package/Case:: TO-251-3 Stub Leads, IPAK

Packaging:: Tube

Product Status:: Active

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 100 V

Current - Continuous Drain (Id) @ 25°C:: 19.5A (Ta), 70A (Tc)

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

Rds On (Max) @ Id, Vgs:: 8.2mOhm @ 20A, 10V

Vgs(th) (Max) @ Id:: 2.5V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 50 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 2500 pF @ 50 V

FET Feature:: -

Power Dissipation (Max):: 6.2W (Ta), 89W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-251B

AOY66920 FAQ

1.How can I place an order for AOY66920 through Aetrix?

Please submit a Request for Quotation (RFQ) for AOY66920 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 AOY66920 reliable?

The price and inventory of AOY66920 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOY66920 is usually 5 days.

3.What payment methods are accepted for AOY66920?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOY66920 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AOY66920?

AOY66920 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AOY66920 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 AOY66920?

For technical support, including AOY66920 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOY66920 requirements.

6.How does Aetrix verify that AOY66920 is sourced from the original manufacturer or authorized distributors?

All AOY66920 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 AOY66920 meets industry standards.

7.What is the process for return or replacement of AOY66920?

All AOY66920 units undergo pre-shipment inspection (PSI). If there is an issue with AOY66920, 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 AOY66920 part is unused and in its original packaging.

Return procedure for AOY66920:

1.Submit a request within 90 days.

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

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