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

Alpha & Omega Semiconductor Inc. AOD450

Name: AOD450
Brand: Alpha & Omega Semiconductor Inc.
SKU: AOD450
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AOD450

Manufacturer:: Alpha & Omega Semiconductor Inc.

Category:: FETs, MOSFETs

Package:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Datasheet:: AOD450.pdf

Description:: MOSFET N-CH 200V 3.8A TO252

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AOD450 from Alpha & Omega Semiconductor is a 200V N-Channel MOSFET using advanced trench technology to deliver <0.70Ω R_DS(ON) at V_GS=10V, 3.8A continuous drain current, and 100% UIS-tested ruggedness. It serves as a main switch in DC-DC converters, motor control H-bridges, and industrial load switching circuits.

For engineers reviewing the AOD450 datasheet, pinout, applications, or equivalent options, key selection criteria include its TO-252 (DPAK) package thermal performance, gate charge of 3.82nC at 10V, body-diode reverse recovery time of 59ns, and 175°C maximum junction temperature for high-reliability power stage design.

Technical Context

The AOD450 operates as a unidirectional voltage-controlled power switch with enhancement-mode N-channel topology. Its trench-gate structure enables low conduction loss while maintaining fast switching via 3.3ns rise time and 2.8ns fall time under 3Ω gate drive.

It features integrated body diode with 0.8–1.0V forward voltage at 1A, supports unclamped inductive switching up to 6A avalanche current, and is characterized for operation across –55°C to +175°C junction temperature range with 6°C/W junction-to-case thermal resistance.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	200V - Supports DC bus voltages up to 160V with margin for transients in industrial SMPS and motor drives.
R_DS(ON)	<0.70Ω @ V_GS=10V - Enables ≤2.7W conduction loss at 3.8A, reducing heatsink requirements in compact designs.
Q_g(10V)	3.82nC - Low gate charge allows efficient 100kHz+ switching with minimal driver power consumption.
I_D	3.8A continuous @ T_C=25°C - Sustains rated load current with case temperature monitoring in surface-mount power stages.
t_r/t_f	3.3ns/2.8ns - Fast edge rates reduce switching transition losses and EMI generation in hard-switched topologies.
E_AS	12.5mJ - Confirmed avalanche energy rating ensures robustness during inductive turn-off without external snubbers.
T_J Range	–55°C to +175°C - Qualified for extended-temperature environments including automotive under-hood and industrial controls.

Pinout & Package

Package: TO-252 (DPAK), surface-mount, single-die N-Channel MOSFET with exposed drain pad for thermal conduction to PCB copper.

Pin/Terminal	Circuit Role	Design Meaning
G	Gate	Controls channel conduction; requires ≥3V threshold, driven with 10V for full R_DS(ON) specification.
S	Source	Reference node for gate drive and current return path; tied to power ground in low-side configurations.
D	Drain	High-side power terminal; electrically connected to exposed pad for thermal and current conduction to PCB.

Key Features

Feature	Design Value
100% UIS Tested	Guarantees single-pulse avalanche capability up to 12.5mJ, eliminating need for external clamping in inductive load switching.
Low Q_gd/Q_g Ratio	1.47nC / 3.82nC = 0.38 - Reduces Miller-induced shoot-through risk and improves hard-switching stability.
Body Diode t_rr	59ns - Enables synchronous rectification in buck converters without significant reverse recovery loss penalty.
R_θJC	6°C/W - Allows direct thermal coupling to heatsink or large copper pour, supporting >25W pulsed dissipation at T_C=25°C.
100% R_g Tested	Ensures gate resistance consistency (5.5Ω typ) for predictable turn-on/turn-off timing across production lots.

Applications

Motor Control	DC-DC Converters
Use Scenario: Half-bridge leg in 24–48V BLDC motor controllers driving fans, pumps, or actuators. IC Role / Device Role / Timing Role: Low-side switching element with fast turn-off to minimize cross-conduction and enable precise PWM timing. Use Value: 59ns body-diode t_rr and 2.8ns t_f reduce dead-time requirements and improve efficiency at 20–50kHz switching frequencies.	Use Scenario: Primary-side switch in non-isolated buck regulators powering FPGA I/O rails or industrial sensors. IC Role / Device Role / Timing Role: Main power switch handling 3.8A continuous output with minimal conduction loss and thermal derating. Use Value: <0.70Ω R_DS(ON) limits I²R loss to ≤10.1W peak at 3.8A, enabling compact layout on 2oz FR-4 with 1in² copper area.
Industrial Load Switching	Inverters
Use Scenario: Solid-state relay replacement for PLC output modules switching solenoids, contactors, or heating elements. IC Role / Device Role / Timing Role: High-voltage, current-limited power switch with built-in avalanche ruggedness for inductive load interruption. Use Value: 200V V_DS rating and 12.5mJ E_AS support reliable turn-off of 48V/2A inductive loads without snubber networks.	Use Scenario: Output stage switch in 100–200V solar microinverters or UPS inverters converting DC to AC. IC Role / Device Role / Timing Role: Unidirectional power switch in bridge-leg configuration, operating with bidirectional current via body diode commutation. Use Value: 175°C T_J(max) and –55°C low-temp rating ensure reliability across outdoor ambient conditions and thermal cycling stress.

Motor Control

DC-DC Converters

Use Scenario: Half-bridge leg in 24–48V BLDC motor controllers driving fans, pumps, or actuators.

IC Role / Device Role / Timing Role: Low-side switching element with fast turn-off to minimize cross-conduction and enable precise PWM timing.

Use Value: 59ns body-diode t_rr and 2.8ns t_f reduce dead-time requirements and improve efficiency at 20–50kHz switching frequencies.

Use Scenario: Primary-side switch in non-isolated buck regulators powering FPGA I/O rails or industrial sensors.

IC Role / Device Role / Timing Role: Main power switch handling 3.8A continuous output with minimal conduction loss and thermal derating.

Use Value: <0.70Ω R_DS(ON) limits I²R loss to ≤10.1W peak at 3.8A, enabling compact layout on 2oz FR-4 with 1in² copper area.

Industrial Load Switching

Inverters

Use Scenario: Solid-state relay replacement for PLC output modules switching solenoids, contactors, or heating elements.

IC Role / Device Role / Timing Role: High-voltage, current-limited power switch with built-in avalanche ruggedness for inductive load interruption.

Use Value: 200V V_DS rating and 12.5mJ E_AS support reliable turn-off of 48V/2A inductive loads without snubber networks.

Use Scenario: Output stage switch in 100–200V solar microinverters or UPS inverters converting DC to AC.

IC Role / Device Role / Timing Role: Unidirectional power switch in bridge-leg configuration, operating with bidirectional current via body diode commutation.

Use Value: 175°C T_J(max) and –55°C low-temp rating ensure reliability across outdoor ambient conditions and thermal cycling 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
STP20NM20	200V, 20A, R_DS(ON) = 0.12Ω @ 10V, TO-220 package, higher Q_g (25nC)	Higher current capacity but larger footprint and slower switching; suited for lower-frequency, higher-power linear regulation.	Select when board space permits TO-220 mounting and average switching frequency is below 50kHz.
IRF6644	200V, 12A, R_DS(ON) = 0.055Ω @ 10V, DirectFET package, Q_g = 11.5nC	Lower R_DS(ON) and higher current, but requires specialized DirectFET layout and has no body-diode t_rr spec.	Prefer for high-efficiency, high-density synchronous rectifiers where body-diode recovery is externally managed.

Compared with STP20NM20 and IRF6644, the AOD450 offers optimal balance of low gate charge (3.82nC), verified body-diode recovery (59ns), and DPAK thermal performance (6°C/W), making it ideal for cost-sensitive, medium-power, surface-mount switching applications requiring ruggedness and ease of layout.

Availability

AOD450 is available at Aetrix Electronics and suitable for motor control, DC-DC conversion, and industrial load switching requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.

Supply support for AOD450 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 ICs for computing, consumer, and industrial markets.

The AOD450 belongs to AOS's standard-voltage trench-MOSFET product line, engineered for high-reliability, surface-mount power switching in cost-sensitive applications where thermal efficiency, avalanche ruggedness, and fast switching are critical.

FAQ

What is the maximum continuous drain current for the AOD450 at 100°C case temperature?

The AOD450 supports 2.7A continuous drain current at T_C = 100°C, as specified in its Absolute Maximum Ratings table. This derated value reflects thermal limitations of the TO-252 package under sustained power dissipation; designers must verify PCB copper area and airflow to maintain safe junction temperature. The AOD450's R_θJC of 6°C/W enables effective heat transfer when mounted on ≥1in² 2oz copper.

Does the AOD450 have a specified body-diode reverse recovery charge (Q_rr)?

Yes, the AOD450 specifies Q_rr = 142nC under conditions of I_F = 3.8A and dI/dt = 100A/µs. This parameter is critical for estimating commutation losses in synchronous rectifier and half-bridge configurations. The corresponding t_rr of 59ns and V_SD of 0.8–1.0V confirm its suitability for moderate-frequency freewheeling applications without external Schottky assistance.

Is the AOD450 suitable for use in automotive applications?

The AOD450 is qualified for the consumer market per its datasheet disclaimer and is not authorized for life-support or safety-critical automotive systems. While its –55°C to +175°C junction temperature range meets under-hood thermal requirements, it lacks AEC-Q101 qualification, PPAP documentation, and automotive-specific reliability testing. For automotive-grade alternatives, consult AOS's AUIRF series or equivalent qualified parts.

What gate drive voltage is required to achieve the specified R_DS(ON) of <0.70Ω?

The AOD450 achieves its specified R_DS(ON) of <0.70Ω at V_GS = 10V, as confirmed in the Electrical Characteristics table. Gate threshold voltage ranges from 3V to 6V, so a minimum of 7V is recommended for reliable enhancement-mode turn-on; however, full on-resistance performance and thermal margin require stable 10V gate drive referenced to source potential.

How is the AOD450's avalanche capability validated?

The AOD450 undergoes 100% Unclamped Inductive Switching (UIS) testing per JEDEC JESD24-1, with each unit verified to withstand 12.5mJ single-pulse avalanche energy. This test uses a standardized inductive load circuit (L = 1.35mH) and confirms robustness against voltage spikes during inductive turn-off-critical for relay replacement and motor drive applications where snubbers are omitted.

AOD450 Specifications

Product attributes: Attribute value

Manufacturer:: Alpha & Omega Semiconductor Inc.

Series:: -

Package/Case:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 200 V

Current - Continuous Drain (Id) @ 25°C:: 3.8A (Tc)

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

Rds On (Max) @ Id, Vgs:: 700mOhm @ 3.8A, 15V

Vgs(th) (Max) @ Id:: 6V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 3.82 nC @ 10 V

Vgs (Max):: ±30V

Input Capacitance (Ciss) (Max) @ Vds:: 215 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 2.1W (Ta), 25W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: TO-252 (DPAK)

AOD450 FAQ

1.How can I place an order for AOD450 through Aetrix?

Please submit a Request for Quotation (RFQ) for AOD450 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 AOD450 reliable?

The price and inventory of AOD450 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOD450 is usually 5 days.

3.What payment methods are accepted for AOD450?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOD450 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AOD450?

AOD450 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AOD450 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 AOD450?

For technical support, including AOD450 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOD450 requirements.

6.How does Aetrix verify that AOD450 is sourced from the original manufacturer or authorized distributors?

All AOD450 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 AOD450 meets industry standards.

7.What is the process for return or replacement of AOD450?

All AOD450 units undergo pre-shipment inspection (PSI). If there is an issue with AOD450, 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 AOD450 part is unused and in its original packaging.

Return procedure for AOD450:

1.Submit a request within 90 days.

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

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