Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Alpha & Omega Semiconductor Inc. AOD409G

Name: AOD409G
Brand: Alpha & Omega Semiconductor Inc.
SKU: AOD409G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: AOD409G

Manufacturer:: Alpha & Omega Semiconductor Inc.

Category:: FETs, MOSFETs

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

Datasheet:: AOD409G.pdf

Description:: P

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:2,693

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

AOD409G from Alpha & Omega Semiconductor is a -60V, -28A P-channel enhancement-mode MOSFET in TO-252 (DPAK) package, featuring <40mΩ R_DS(ON) at V_GS=-10V and logic-level gate drive compatibility down to -4.5V. It delivers robust unclamped inductive switching performance and is optimized for industrial motor control, DC-DC converters, and high-side load switching.

For engineers reviewing the AOD409G datasheet, pinout, applications, or equivalent options, key selection criteria include its -60V breakdown rating, -28A continuous drain current, low gate charge (Q_g=45–65nC), body-diode reverse recovery characteristics (t_rr=23ns, Q_rr=107nC), and thermal resistance (R_θJC=2.1°C/W).

Technical Context

The AOD409G employs trench power MOSFET technology to achieve low on-resistance and fast switching with minimal gate drive requirements. Its logic-level gate threshold (V_GS(th) = -1.5 to -2.5V) enables direct interface with 3.3V/5V microcontrollers without level-shifting circuitry.

Designed for high-reliability industrial use, it undergoes 100% UIS (unclamped inductive switching) and 100% gate resistance (R_g) testing. The device supports bidirectional current flow via its integrated body diode, with characterized reverse recovery parameters (Q_rr, t_rr) critical for synchronous rectification and flyback topologies.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	-60V - Maximum drain-source blocking voltage; defines safe operating range in high-side switch or H-bridge configurations.
I_D (V_GS=-10V)	-28A - Continuous drain current at T_C=100°C; determines maximum steady-state load-handling capability with heatsinking.
R_DS(ON) (V_GS=-10V)	<40mΩ - Low conduction loss at full gate drive; reduces I²R heating in motor drive and power supply applications.
R_DS(ON) (V_GS=-4.5V)	<55mΩ - Confirmed logic-level operation; ensures usable on-resistance with standard 5V or 3.3V GPIO drivers.
Q_g (10V)	45–65nC - Total gate charge magnitude; directly impacts switching loss and required gate driver peak current.
t_rr / Q_rr	23ns / 107nC - Body diode reverse recovery time and charge; critical for efficiency and EMI in hard-switched topologies.
R_θJC	2.1°C/W - Junction-to-case thermal resistance; enables accurate junction temperature estimation when mounted to heatsink.

Pinout & Package

Package: TO-252 (DPAK), surface-mount, single-ended heat dissipation through exposed drain pad.

Pin/Terminal	Circuit Role	Design Meaning
G	Gate	Control terminal; accepts logic-level negative voltage (-4.5V to -20V) to turn on P-channel device.
S	Source	Reference node for gate drive; connected to positive rail in high-side switch configuration.
D	Drain	Power output terminal; electrically tied to exposed copper pad for thermal and electrical conduction.

Key Features

Feature	Design Value
Trench Power MOSFET Technology	Enables lower R_DS(ON) and higher cell density vs. planar designs, improving power density in compact layouts.
Logic-Level Gate Drive	Operates fully enhanced with V_GS ≤ -4.5V, eliminating need for external gate driver ICs in many microcontroller-based systems.
100% UIS Tested	Guarantees ruggedness against inductive energy spikes during motor commutation or relay de-energization.
RoHS and Halogen-Free Compliant	Meets environmental compliance requirements for industrial and consumer electronics manufacturing.

Applications

Industrial Motor Control	DC-DC Synchronous Buck Converter
Use Scenario: High-side switch in 24V/48V brushed DC motor H-bridge drivers for factory automation actuators. IC Role / Device Role / Timing Role: P-channel high-side switch controlling motor voltage polarity and enabling regenerative braking via body diode conduction. Use Value: Low R_DS(ON) at -4.5V gate drive reduces conduction loss during PWM; 100% UIS rating prevents failure during motor stall or sudden direction reversal.	Use Scenario: Upper switch in non-isolated buck converter supplying 5V/3.3V rails from 12V input in programmable logic controllers. IC Role / Device Role / Timing Role: High-side synchronous rectifier replacing Schottky diode to improve conversion efficiency above 85%. Use Value: Verified Q_rr and t_rr allow predictable dead-time optimization; low gate charge minimizes driver power consumption.
Hot-Swap Power Distribution	High-Voltage Load Switch
Use Scenario: Inrush current limiting and fault protection in modular backplane power supplies for test equipment racks. IC Role / Device Role / Timing Role: Controlled high-side disconnect switch with soft-start capability enabled by gate resistor tuning. Use Value: -60V V_DS rating provides margin over 48V nominal bus; low R_DS(ON) limits voltage drop during sustained load current.	Use Scenario: Remote-controlled power enable for industrial sensors and field transmitters operating from 24V loop-powered supplies. IC Role / Device Role / Timing Role: Solid-state replacement for mechanical relays, providing silent, bounce-free, and long-life switching. Use Value: TO-252 package allows direct PCB mounting with minimal footprint; logic-level drive simplifies interface with isolated digital outputs.

Industrial Motor Control

DC-DC Synchronous Buck Converter

Use Scenario: High-side switch in 24V/48V brushed DC motor H-bridge drivers for factory automation actuators.

IC Role / Device Role / Timing Role: P-channel high-side switch controlling motor voltage polarity and enabling regenerative braking via body diode conduction.

Use Value: Low R_DS(ON) at -4.5V gate drive reduces conduction loss during PWM; 100% UIS rating prevents failure during motor stall or sudden direction reversal.

Use Scenario: Upper switch in non-isolated buck converter supplying 5V/3.3V rails from 12V input in programmable logic controllers.

IC Role / Device Role / Timing Role: High-side synchronous rectifier replacing Schottky diode to improve conversion efficiency above 85%.

Use Value: Verified Q_rr and t_rr allow predictable dead-time optimization; low gate charge minimizes driver power consumption.

Hot-Swap Power Distribution

High-Voltage Load Switch

Use Scenario: Inrush current limiting and fault protection in modular backplane power supplies for test equipment racks.

IC Role / Device Role / Timing Role: Controlled high-side disconnect switch with soft-start capability enabled by gate resistor tuning.

Use Value: -60V V_DS rating provides margin over 48V nominal bus; low R_DS(ON) limits voltage drop during sustained load current.

Use Scenario: Remote-controlled power enable for industrial sensors and field transmitters operating from 24V loop-powered supplies.

IC Role / Device Role / Timing Role: Solid-state replacement for mechanical relays, providing silent, bounce-free, and long-life switching.

Use Value: TO-252 package allows direct PCB mounting with minimal footprint; logic-level drive simplifies interface with isolated digital outputs.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
IRF9540NPbF	V_DS = -100V, R_DS(ON) = 200mΩ @ -10V, slower switching (Q_g ≈ 120nC), TO-220 package	Higher voltage rating but significantly higher conduction loss and larger footprint; suited for legacy 100V designs with less stringent efficiency targets	Select only if -100V rating is mandatory and thermal budget permits higher R_DS(ON); not logic-level compatible
DMG2305UVT	V_DS = -20V, R_DS(ON) = 42mΩ @ -4.5V, SOT-23 package, lower current (I_D = -4.2A)	Compact logic-level device for low-power signal switching; insufficient voltage headroom for 48V industrial systems	Use only in sub-24V logic-level applications where space constraints preclude DPAK; not a functional substitute for AOD409G's voltage/current class

Compared with IRF9540NPbF and DMG2305UVT, the AOD409G uniquely balances -60V rating, -28A current, logic-level drive, and TO-252 thermal performance-making it optimal for mid-voltage industrial power switching where efficiency, size, and drive simplicity are jointly constrained.

Availability

AOD409G is available at Aetrix Electronics and suitable for industrial motor control, DC-DC synchronous rectification, and high-voltage load switching requiring stable component supply, consistent parametric performance across production lots, and long-term lifecycle support.

Supply support for AOD409G 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 industrial, computing, and automotive markets.

The AOD409G belongs to AOS's logic-level P-channel Trench MOSFET product line, engineered specifically for high-efficiency, space-constrained industrial power switching where gate drive simplicity and ruggedness are essential.

FAQ

What is the maximum continuous drain current rating for the AOD409G?

The AOD409G has a maximum continuous drain current of -28A at T_C = 100°C. This rating assumes proper heatsinking via the exposed drain pad in the TO-252 package. At T_A = 25°C with no heatsink, the derated current drops to -7A due to thermal limitations defined by R_θJA = 50°C/W. Always verify junction temperature using actual board layout and ambient conditions before final design validation.

Does the AOD409G support logic-level gate drive?

Yes, the AOD409G supports true logic-level gate drive with guaranteed R_DS(ON) < 55mΩ at V_GS = -4.5V. Its gate threshold voltage ranges from -1.5V to -2.5V, allowing reliable turn-on with standard 3.3V or 5V microcontroller outputs. No external level shifter is needed, simplifying control circuitry in battery-powered or isolated gate-drive applications.

Is the AOD409G suitable for synchronous rectification in buck converters?

Yes, the AOD409G is suitable for synchronous rectification in buck converters operating up to 48V input. Its characterized body diode parameters-including t_rr = 23ns and Q_rr = 107nC-enable precise dead-time control to minimize shoot-through and conduction loss. Combined with low Q_g (45–65nC), it reduces gate driver losses while maintaining high efficiency across load ranges.

What thermal resistance values apply to the AOD409G in PCB design?

The AOD409G specifies R_θJC = 2.1°C/W (junction-to-case) and R_θJA = 50°C/W (junction-to-ambient, measured on 1in² FR-4 with 2oz copper). For thermally demanding applications, prioritize heatsinking via the exposed drain pad using multiple thermal vias to internal ground planes. R_θJC is most relevant when using an external heatsink; R_θJA applies to natural-convection-only layouts.

How is the AOD409G tested for ruggedness in inductive switching?

The AOD409G undergoes 100% Unclamped Inductive Switching (UIS) testing per JEDEC standards, verifying its ability to absorb inductive energy (E_AS = 34mJ) without failure. Each unit is also 100% gate resistance (R_g) tested to ensure consistent switching behavior. These tests confirm reliability in motor drive, solenoid control, and other highly inductive load applications where voltage overshoot is unavoidable.

AOD409G 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:: Active

FET Type:: P-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 60 V

Current - Continuous Drain (Id) @ 25°C:: 9A (Ta), 28A (Tc)

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

Rds On (Max) @ Id, Vgs:: 40mOhm @ 20A, 10V

Vgs(th) (Max) @ Id:: 2.5V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 65 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 2350 pF @ 30 V

FET Feature:: -

Power Dissipation (Max):: 6.2W (Ta), 60W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: TO-252 (DPAK)

AOD409G FAQ

1.How can I place an order for AOD409G through Aetrix?

Please submit a Request for Quotation (RFQ) for AOD409G 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 AOD409G reliable?

The price and inventory of AOD409G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOD409G is usually 5 days.

3.What payment methods are accepted for AOD409G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOD409G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AOD409G?

AOD409G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AOD409G 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 AOD409G?

For technical support, including AOD409G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOD409G requirements.

6.How does Aetrix verify that AOD409G is sourced from the original manufacturer or authorized distributors?

All AOD409G 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 AOD409G meets industry standards.

7.What is the process for return or replacement of AOD409G?

All AOD409G units undergo pre-shipment inspection (PSI). If there is an issue with AOD409G, 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 AOD409G part is unused and in its original packaging.

Return procedure for AOD409G:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-10 Schmitt Trigger Explained: Hysteresis, Circuits, Inverters and Applications

Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…