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

Alpha & Omega Semiconductor Inc. AOWF412

Name: AOWF412
Brand: Alpha & Omega Semiconductor Inc.
SKU: AOWF412
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AOWF412

Manufacturer:: Alpha & Omega Semiconductor Inc.

Category:: FETs, MOSFETs

Package:: TO-262-3 Long Leads, I2PAK, TO-262AA

Datasheet:: AOWF412.pdf

Description:: MOSFET N-CH 100V 7.8A/30A

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AOWF412 from Alpha & Omega Semiconductor is a 100V N-Channel MOSFET fabricated with SDMOSTM trench technology, delivering R_DS(ON) < 15.8 mΩ at V_GS = 10 V, 30 A continuous drain current, and 100% UIS-tested ruggedness for high-reliability switching in DC-DC converters and motor drives.

For engineers reviewing the AOWF412 datasheet, pinout, applications, or equivalent options, this device is selected for its low gate charge (Q_g = 45 nC typ), controlled switching behavior, and thermal robustness up to 175°C junction temperature in TO-262F packaging.

Technical Context

The AOWF412 employs trench-gate SDMOSTM process to simultaneously optimize conduction loss (R_DS(ON) < 15.8 mΩ) and switching performance (Q_gd = 15 nC max, t_r = 16 ns). Its body diode exhibits Q_rr = 96 nC and t_rr = 22 ns at I_F = 20 A, dI/dt = 500 A/μs.

Rated for 100 V V_DS, it supports pulsed drain currents up to 110 A and avalanche energy E_AS = 47 mJ. Thermal design is enabled by R_θJC = 4.5 °C/W and R_θJA = 60 °C/W on standard FR-4 board.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	100 V - Maximum blocking voltage for mid-voltage DC-DC and motor control stages
I_D (V_GS = 10 V)	30 A - Continuous conduction capability at T_C = 25°C without forced cooling
R_DS(ON) (V_GS = 10 V)	< 15.8 mΩ - Low conduction loss enabling >95% efficiency in 12–48 V systems
Q_g (10 V)	45 nC typ - Enables fast, low-loss switching with moderate gate drive strength
E_AS	47 mJ - Confirmed unclamped inductive switching ruggedness for reliable operation under transient overloads
T_J Range	−55 to +175°C - Supports industrial and automotive under-hood environments
R_θJC	4.5°C/W - Enables direct heatsink mounting for high-power thermal management

Pinout & Package

Package: TO-262F (Isolated tab, surface-mount compatible variant of TO-262 with enhanced thermal pad).

Pin/Terminal	Circuit Role	Design Meaning
G	Gate	Controls channel conduction; requires ≤ ±25 V drive; low Q_g enables efficient PWM at 100–500 kHz
D	Drain	Main high-side or low-side power terminal; electrically connected to isolated metal tab for thermal path
S	Source	Reference node for gate drive and current sensing; common return for load current

Key Features

Feature	Design Value
SDMOSTM trench process	Combines low R_DS(ON) and low Q_rr for high-efficiency hard-switching topologies
100% UIS tested	Guarantees avalanche survivability in real-world inductive turn-off events without derating
Low Q_gd/Q_g ratio	0.33 typ (15/45 nC) - improves Miller immunity and reduces switching instability risk
Enhanced body diode softness	t_rr = 22 ns with S factor ≥ 1.0 - minimizes voltage overshoot and EMI in freewheeling paths
Isolated TO-262F package	Electrically isolated metal tab eliminates need for insulating hardware in heatsink mounting

Applications

DC-DC Converters	Motor Drives
Use Scenario: Primary-side switch in 24–48 V input synchronous buck converters for telecom and server PSUs. IC Role / Device Role / Timing Role: High-side N-channel MOSFET operating at 200–300 kHz with 30 A peak load current. Use Value: R_DS(ON) < 15.8 mΩ and Q_g = 45 nC enable >96% full-load efficiency while maintaining thermal margin at 100°C case temperature.	Use Scenario: Half-bridge leg in 24 V BLDC motor controllers for industrial automation. IC Role / Device Role / Timing Role: Low-side switching element handling 30 A continuous phase current with fast PWM commutation. Use Value: 100% UIS testing and robust body diode (Q_rr = 96 nC) prevent failure during regenerative braking and shoot-through transients.
Power Supplies	Load Switching
Use Scenario: OR-ing FET in redundant 12 V/24 V power distribution units. IC Role / Device Role / Timing Role: Back-to-back configured N-channel MOSFET providing low-loss reverse-current blocking. Use Value: Low R_DS(ON) and tight V_GS(th) (2.6–3.8 V) ensure reliable turn-on with standard 3.3 V or 5 V logic-level gate drive.	Use Scenario: Hot-swap and inrush limiting in 48 V intermediate bus systems. IC Role / Device Role / Timing Role: Single-pole power switch controlling system power-up sequencing and fault isolation. Use Value: 110 A pulsed rating and 175°C max junction temperature support high-energy inrush current handling without thermal shutdown.

DC-DC Converters

Motor Drives

Use Scenario: Primary-side switch in 24–48 V input synchronous buck converters for telecom and server PSUs.

IC Role / Device Role / Timing Role: High-side N-channel MOSFET operating at 200–300 kHz with 30 A peak load current.

Use Value: R_DS(ON) < 15.8 mΩ and Q_g = 45 nC enable >96% full-load efficiency while maintaining thermal margin at 100°C case temperature.

Use Scenario: Half-bridge leg in 24 V BLDC motor controllers for industrial automation.

IC Role / Device Role / Timing Role: Low-side switching element handling 30 A continuous phase current with fast PWM commutation.

Use Value: 100% UIS testing and robust body diode (Q_rr = 96 nC) prevent failure during regenerative braking and shoot-through transients.

Power Supplies

Load Switching

Use Scenario: OR-ing FET in redundant 12 V/24 V power distribution units.

IC Role / Device Role / Timing Role: Back-to-back configured N-channel MOSFET providing low-loss reverse-current blocking.

Use Value: Low R_DS(ON) and tight V_GS(th) (2.6–3.8 V) ensure reliable turn-on with standard 3.3 V or 5 V logic-level gate drive.

Use Scenario: Hot-swap and inrush limiting in 48 V intermediate bus systems.

IC Role / Device Role / Timing Role: Single-pole power switch controlling system power-up sequencing and fault isolation.

Use Value: 110 A pulsed rating and 175°C max junction temperature support high-energy inrush current handling without thermal shutdown.

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) = 11.5 mΩ @ 10 V, Q_g = 52 nC, TO-220FP package, no UIS test specified	Lacks 100% UIS validation; higher gate charge increases driver loss at high frequency	Prefer AOWF412 where avalanche ruggedness or high-frequency efficiency is critical
IRF3205PBF	R_DS(ON) = 8.0 mΩ @ 10 V, Q_g = 71 nC, TO-220 package, no Q_rr or softness data published	Lower R_DS(ON) but significantly higher Q_g and uncharacterized body diode recovery	Prefer AOWF412 in noise-sensitive or fast-switching designs requiring predictable diode behavior

Compared with STP110N10F7 and IRF3205PBF, the AOWF412 provides verified UIS ruggedness, lower Q_g, and characterized soft-recovery body diode-making it preferable for high-reliability, high-frequency, and inductive-load applications where transient robustness and EMI control matter.

Availability

AOWF412 is available at Aetrix Electronics and suitable for DC-DC converters, motor drives, power supplies, and load switching requiring stable component supply and long-term industrial lifecycle support.

Supply support for AOWF412 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, industrial, and automotive markets.

The AOWF412 belongs to AOS's SDMOSTM trench MOSFET product line, engineered for high-efficiency, high-ruggedness switching in mid-voltage power conversion and motor control systems.

FAQ

What is the maximum continuous drain current rating for the AOWF412 at 100°C case temperature?

The AOWF412 supports 20 A continuous drain current at T_C = 100°C, as specified in the Absolute Maximum Ratings table. This derated value reflects thermal limits under steady-state conduction and assumes proper heatsinking per the R_θJC = 4.5°C/W specification. The AOWF412 maintains safe operation up to 175°C junction temperature, making it suitable for thermally constrained industrial environments.

Does the AOWF412 have an isolated package, and how does that affect PCB layout?

Yes, the AOWF412 uses the TO-262F package with an electrically isolated metal tab. This eliminates the need for insulating pads or shoulder washers when mounted directly to a heatsink, simplifying thermal design and reducing assembly cost. The isolation also allows flexible placement-such as high-side configuration-without requiring gate-drive level-shifting due to drain potential coupling. The AOWF412's pinout (G-D-S) remains consistent with standard TO-262 layouts.

What is the typical gate threshold voltage range for the AOWF412, and how does it impact logic-level drive compatibility?

The AOWF412 has a gate threshold voltage V_GS(th) of 2.6–3.8 V at T_J = 25°C, enabling reliable turn-on with standard 3.3 V or 5 V logic-level gate drivers. At elevated temperatures, V_GS(th) decreases slightly, improving robustness against false turn-on. For full enhancement and minimal R_DS(ON), a V_GS ≥ 10 V is recommended-ensuring the AOWF412 achieves its rated <15.8 mΩ conduction resistance across temperature and load conditions.

How is the body diode performance of the AOWF412 characterized, and why does it matter in synchronous rectification?

The AOWF412's body diode is fully characterized with Q_rr = 96 nC and t_rr = 22 ns at I_F = 20 A and dI/dt = 500 A/μs, and exhibits soft recovery (S ≥ 1.0). In synchronous rectification, this low, predictable reverse recovery charge minimizes voltage spikes and EMI during freewheeling transitions-reducing stress on adjacent switches and easing filter design. The AOWF412's softness ensures graceful current commutation, unlike many generic MOSFETs with uncharacterized or hard-recovery diodes.

Is the AOWF412 suitable for use in automotive applications, and what qualifications does it hold?

The AOWF412 is not AEC-Q101 qualified and is not intended for automotive safety-critical systems. It is rated for industrial temperature range (−55°C to +175°C) and meets JEDEC JESD22 reliability standards for humidity, temperature cycling, and HAST. While its ruggedness and thermal specs support under-hood ambient conditions, AOS explicitly excludes life-support or automotive-critical applications in its terms. For automotive use, designers must validate suitability per their own functional safety requirements-and the AOWF412 should only be deployed in non-safety-critical auxiliary systems after full system-level qualification.

AOWF412 Specifications

Product attributes: Attribute value

Manufacturer:: Alpha & Omega Semiconductor Inc.

Series:: SDMOS™

Package/Case:: TO-262-3 Long Leads, I2PAK, TO-262AA

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:: 7.8A (Ta), 30A (Tc)

Drive Voltage (Max Rds On, Min Rds On):: 7V, 10V

Rds On (Max) @ Id, Vgs:: 15.8mOhm @ 20A, 10V

Vgs(th) (Max) @ Id:: 3.8V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 54 nC @ 10 V

Vgs (Max):: ±25V

Input Capacitance (Ciss) (Max) @ Vds:: 3220 pF @ 50 V

FET Feature:: -

Power Dissipation (Max):: 2.1W (Ta), 33W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-262F

AOWF412 FAQ

1.How can I place an order for AOWF412 through Aetrix?

Please submit a Request for Quotation (RFQ) for AOWF412 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 AOWF412 reliable?

The price and inventory of AOWF412 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOWF412 is usually 5 days.

3.What payment methods are accepted for AOWF412?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOWF412 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AOWF412?

AOWF412 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AOWF412 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 AOWF412?

For technical support, including AOWF412 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOWF412 requirements.

6.How does Aetrix verify that AOWF412 is sourced from the original manufacturer or authorized distributors?

All AOWF412 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 AOWF412 meets industry standards.

7.What is the process for return or replacement of AOWF412?

All AOWF412 units undergo pre-shipment inspection (PSI). If there is an issue with AOWF412, 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 AOWF412 part is unused and in its original packaging.

Return procedure for AOWF412:

1.Submit a request within 90 days.

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

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