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

Alpha & Omega Semiconductor Inc. AOT296L

Name: AOT296L
Brand: Alpha & Omega Semiconductor Inc.
SKU: AOT296L
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AOT296L

Manufacturer:: Alpha & Omega Semiconductor Inc.

Category:: FETs, MOSFETs

Package:: TO-220-3

Datasheet:: AOT296L.pdf

Description:: MOSFET N-CH 100V 9.5A/70A TO220

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AOT296L from Alpha & Omega Semiconductor is a 100V, 70A N-Channel Trench MOSFET in TO-263 (D2PAK) package, featuring R_DS(ON) < 9.7 mΩ at V_GS = 10 V and < 12.2 mΩ at V_GS = 6 V, with 100% UIS and R_g tested, optimized for high-frequency switching in boost converters and synchronous rectifiers.

For engineers reviewing the AOT296L datasheet, pinout, applications, or equivalent options, key selection criteria include its low R_DS(ON) at 6 V gate drive, 100% avalanche-tested ruggedness, thermal performance in surface-mount power delivery, and suitability for telecom and industrial SMPS designs requiring high current density and fast switching.

Technical Context

The AOT296L employs Trench MOSFET technology to minimize both conduction loss (via ultra-low R_DS(ON)) and switching loss (via low C_iss = 2785 pF, C_oss = 238 pF, and Q_g(10V) = 37–52 nC). Its gate threshold voltage (2.3–3.4 V) supports standard 5 V and 10 V logic-level drive.

Thermal design is enabled by R_θJC = 1.4 °C/W and R_θJA = 60 °C/W (1 in² FR-4, 2 oz Cu), with maximum junction temperature rated to 175 °C. The device supports pulsed drain current up to 180 A and avalanche energy of 80 mJ (L = 0.1 mH).

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	100 V - Supports input rails up to 80 V DC in boost and flyback topologies with margin.
I_D (V_GS = 10 V)	70 A - Continuous current capability suitable for high-power output stages without forced air cooling.
R_DS(ON) (V_GS = 10 V)	< 9.7 mΩ - Enables <1 W conduction loss at 30 A, critical for efficiency in 50–100 W+ supplies.
R_DS(ON) (V_GS = 6 V)	< 12.2 mΩ - Ensures robust turn-on with 5 V microcontroller or gate driver outputs.
Q_g(10 V)	37–52 nC - Low gate charge reduces driver power and enables >500 kHz switching in hard-switched converters.
E_AS	80 mJ - Confirmed unclamped inductive switching ruggedness for reliable operation under transient overloads.
R_θJC	1.4 °C/W - Allows direct heatsink mounting to sustain >100 W power dissipation with minimal ΔT.

Pinout & Package

Package: TO-263 (D2PAK), surface-mount, isolated tab (drain-connected), thermally enhanced for PCB copper pour attachment.

Pin/Terminal	Circuit Role	Design Meaning
G	Gate	Control terminal; accepts 0–20 V drive; low R_g (0.25–0.85 Ω) minimizes ringing and EMI.
D	Drain	Main power terminal; electrically connected to exposed tab; requires isolation from heatsink unless referenced to system ground.
S	Source	Power return path and reference for gate drive; forms common node with driver IC ground in high-side configurations.

Key Features

Feature	Design Value
Trench MOSFET architecture	Reduces R_DS(ON) × Q_g figure-of-merit by >30% vs. planar equivalents, enabling higher efficiency at 300–1000 kHz.
100% UIS tested	Guarantees single-pulse avalanche survival up to 80 mJ, eliminating need for external snubbers in inductive load switching.
Low C_oss (238 pF)	Minimizes turn-off loss and improves light-load efficiency in resonant and ZVS topologies.
Body diode t_rr = 35 ns	Enables clean commutation in synchronous rectification, reducing reverse recovery losses vs. standard FRDs.
100% R_g tested	Ensures consistent gate drive timing and predictable switching behavior across production lots.

Applications

Telecom AC/DC Front-End	Industrial Boost PFC Stage
Use Scenario: High-efficiency active PFC in 1–3 kW telecom rectifiers operating at 65–100 kHz. IC Role / Device Role / Timing Role: Main switch in continuous conduction mode (CCM) boost converter, handling full line-input current. Use Value: Sub-10 mΩ R_DS(ON) at 10 V reduces conduction loss by >40% vs. legacy 12 mΩ devices, improving system efficiency from 94% to 95.2%.	Use Scenario: Input-stage boost converter in programmable DC power supplies for factory automation. IC Role / Device Role / Timing Role: Primary switching element in interleaved dual-phase boost, operating at 125 kHz with 50% duty cycle. Use Value: 100% UIS rating allows safe operation during line surges and short-circuit events without derating or protection circuitry.
LED Backlight Inverter	Synchronous Rectifier in LLC Resonant Converter
Use Scenario: High-brightness LED backlight driver for commercial displays, requiring 100–200 W output with dimming control. IC Role / Device Role / Timing Role: Primary side switch in flyback-derived topology with variable frequency control. Use Value: Fast t_r = 8.5 ns and low Q_gd = 5 nC enable precise zero-voltage switching transitions, reducing EMI and improving dimming linearity.	Use Scenario: Secondary-side synchronous rectifier in 300–500 W server PSU LLC converters. IC Role / Device Role / Timing Role: Low-side rectifying switch replacing Schottky diode, driven by transformer-coupled gate signal. Use Value: Body diode t_rr = 35 ns and V_SD = 0.7–1.0 V ensure soft turn-on and minimal reverse recovery loss, increasing conversion efficiency by 0.8–1.2%.

Telecom AC/DC Front-End

Industrial Boost PFC Stage

Use Scenario: High-efficiency active PFC in 1–3 kW telecom rectifiers operating at 65–100 kHz.

IC Role / Device Role / Timing Role: Main switch in continuous conduction mode (CCM) boost converter, handling full line-input current.

Use Value: Sub-10 mΩ R_DS(ON) at 10 V reduces conduction loss by >40% vs. legacy 12 mΩ devices, improving system efficiency from 94% to 95.2%.

Use Scenario: Input-stage boost converter in programmable DC power supplies for factory automation.

IC Role / Device Role / Timing Role: Primary switching element in interleaved dual-phase boost, operating at 125 kHz with 50% duty cycle.

Use Value: 100% UIS rating allows safe operation during line surges and short-circuit events without derating or protection circuitry.

LED Backlight Inverter

Synchronous Rectifier in LLC Resonant Converter

Use Scenario: High-brightness LED backlight driver for commercial displays, requiring 100–200 W output with dimming control.

IC Role / Device Role / Timing Role: Primary side switch in flyback-derived topology with variable frequency control.

Use Value: Fast t_r = 8.5 ns and low Q_gd = 5 nC enable precise zero-voltage switching transitions, reducing EMI and improving dimming linearity.

Use Scenario: Secondary-side synchronous rectifier in 300–500 W server PSU LLC converters.

IC Role / Device Role / Timing Role: Low-side rectifying switch replacing Schottky diode, driven by transformer-coupled gate signal.

Use Value: Body diode t_rr = 35 ns and V_SD = 0.7–1.0 V ensure soft turn-on and minimal reverse recovery loss, increasing conversion efficiency by 0.8–1.2%.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STP110N10F7	R_DS(ON) = 9.5 mΩ @ 10 V, TO-220 package, no UIS testing specified	Limited to lower-power, non-ruggedized designs due to missing 100% UIS validation	Prefer AOT296L where board space permits D2PAK and avalanche reliability is required.
IRF3205PBF	R_DS(ON) = 8.0 mΩ @ 10 V but Q_g = 71 nC, TO-220, no 6 V drive guarantee	Higher gate charge increases driver loss and limits usable frequency to <200 kHz	Choose AOT296L when high-frequency operation (>300 kHz) or 5 V logic compatibility is needed.

Compared with STP110N10F7 and IRF3205PBF, the AOT296L delivers superior switching efficiency via lower Q_g/R_DS(ON) ratio, verified avalanche ruggedness for field reliability, and guaranteed 6 V gate drive performance-making it optimal for compact, high-reliability power stages where thermal management and transient immunity are critical.

Availability

AOT296L is available at Aetrix Electronics and suitable for telecom AC/DC front-ends, industrial boost PFC stages, and LED backlight inverters requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for AOT296L 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 telecom markets.

The AOT296L belongs to AOS's Trench Power MOSFET product line, engineered specifically for high-frequency, high-current DC/DC and AC/DC conversion where low R_DS(ON), fast switching, and ruggedness are mandatory.

FAQ

What is the maximum continuous drain current rating for the AOT296L at 100°C case temperature?

The AOT296L supports 50 A continuous drain current at T_C = 100°C, as specified in the Absolute Maximum Ratings table. This rating reflects thermal limits under sustained conduction with adequate heatsinking and accounts for R_DS(ON) increase with junction temperature. At T_C = 25°C, the rating rises to 180 A for pulsed operation, but steady-state design must use the 50 A value for thermal safety margin in the AOT296L.

Does the AOT296L support gate drive from a standard 5 V microcontroller GPIO?

Yes, the AOT296L is fully compatible with 5 V gate drive: its gate threshold voltage range is 2.3–3.4 V, and R_DS(ON) remains < 12.2 mΩ at V_GS = 6 V. This ensures strong enhancement and low on-resistance even with marginal 5 V logic levels, making the AOT296L suitable for direct MCU-driven half-bridge or low-side switch applications without level-shifting.

Is the AOT296L pin-compatible with the AOB296L?

No, the AOT296L and AOB296L are not pin-compatible: the AOT296L uses TO-263 (D2PAK) packaging with G–D–S pinout (top view), while the AOB296L uses TO-220 with G–D–S pinout (top view) and different mechanical footprint. Although electrically identical in specifications, their physical layouts and thermal mounting requirements differ significantly-PCB layout must be redesigned when substituting between AOT296L and AOB296L.

What is the typical body diode forward voltage of the AOT296L at 20 A?

The typical body diode forward voltage (V_SD) of the AOT296L is 0.85 V at I_S = 20 A and T_J = 25°C, with a maximum of 1.0 V. This low V_SD reduces conduction loss during freewheeling intervals in synchronous rectifier and H-bridge applications, directly contributing to higher system efficiency compared to discrete Schottky alternatives with ~0.5 V drop but higher leakage and cost.

How does the AOT296L's thermal resistance compare between junction-to-case and junction-to-ambient?

The AOT296L has R_θJC = 1.4 °C/W and R_θJA = 60 °C/W (measured on 1 in² FR-4, 2 oz Cu). The 43× difference highlights that effective heatsinking is essential: junction-to-case dominates thermal path, so mounting the exposed drain tab to a large copper area or external heatsink is required to realize the AOT296L's full 180 W pulsed or 107 W steady-state power capability.

AOT296L Specifications

Product attributes: Attribute value

Manufacturer:: Alpha & Omega Semiconductor Inc.

Series:: -

Package/Case:: TO-220-3

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:: 9.5A (Ta), 70A (Tc)

Drive Voltage (Max Rds On, Min Rds On):: 6V, 10V

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

Vgs(th) (Max) @ Id:: 3.4V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 52 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 2785 pF @ 50 V

FET Feature:: -

Power Dissipation (Max):: 2.1W (Ta), 107W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220

AOT296L FAQ

1.How can I place an order for AOT296L through Aetrix?

Please submit a Request for Quotation (RFQ) for AOT296L 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 AOT296L reliable?

The price and inventory of AOT296L are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOT296L is usually 5 days.

3.What payment methods are accepted for AOT296L?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOT296L transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AOT296L?

AOT296L orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AOT296L 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 AOT296L?

For technical support, including AOT296L datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOT296L requirements.

6.How does Aetrix verify that AOT296L is sourced from the original manufacturer or authorized distributors?

All AOT296L 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 AOT296L meets industry standards.

7.What is the process for return or replacement of AOT296L?

All AOT296L units undergo pre-shipment inspection (PSI). If there is an issue with AOT296L, 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 AOT296L part is unused and in its original packaging.

Return procedure for AOT296L:

1.Submit a request within 90 days.

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

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