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

Alpha & Omega Semiconductor Inc. AOWF600A70F

Name: AOWF600A70F
Brand: Alpha & Omega Semiconductor Inc.
SKU: AOWF600A70F
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AOWF600A70F

Manufacturer:: Alpha & Omega Semiconductor Inc.

Category:: FETs, MOSFETs

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

Datasheet:: AOWF600A70F.pdf

Description:: MOSFET N-CH 700V 8.5A TO262F

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Product details

Overview

AOWF600A70F from Alpha & Omega Semiconductor is a 700 V, 34 A N-channel MOSFET in TO-262F package, featuring 0.53 Ω typical R_DS(ON), 14.5 nC total gate charge, and optimized switching for flyback SMPS. It delivers robust unclamped inductive switching (UIS) performance and enhanced body diode recovery for high-efficiency AC/DC adapters and lighting power stages.

For engineers reviewing the AOWF600A70F datasheet, pinout, applications, or equivalent options, key selection criteria include its 800 V BVDSS rating at TJ=150°C, 260 ns body diode reverse recovery time, 1.9 mJ E_OSS at 400 V, and thermal resistance of 5.0 °C/W junction-to-case - critical for thermally constrained PD adapters and TV power supplies.

Technical Context

The AOWF600A70F employs proprietary aMOS5™ technology to achieve low conduction loss and controlled switching transients. Its 0.62 V/°C breakdown voltage temperature coefficient and 100% UIS-tested ruggedness support stable operation across wide temperature ranges in offline converters.

Designed for hard-switched flyback topologies, it integrates a fast-recovery body diode (T_rr = 260 ns, Q_rr = 3.5 mC) and exhibits low Crss (1.4 pF) and Co(er) (22 pF), enabling reduced EMI and improved dv/dt immunity up to 100 V/ns.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	700 V - rated blocking voltage for primary-side switching in 230 VAC universal-input SMPS
R_DS(ON), max	0.6 Ω - ensures <1.5 W conduction loss at 34 A pulsed drain current with minimal heatsink requirement
Q_g, typ	14.5 nC - enables efficient gate drive with standard 1–2 A peak drivers at 100–300 kHz switching frequencies
E_OSS @ 400 V	1.9 mJ - reduces turn-off switching loss and improves efficiency in high-voltage flyback designs
T_rr	260 ns - supports clean body diode commutation in quasi-resonant and CCM flyback without snubbers
R_θJC	5.0 °C/W - allows direct mounting to heatsink for thermal management in compact 65–100 W adapter PCBs
dv/dt ruggedness	100 V/ns - sustains reliable operation under high-noise conditions in industrial-grade power supplies

Pinout & Package

Package: TO-262F (Isolated tab, straight lead, RoHS-compliant). Thermal pad electrically connected to drain; case isolation enables simplified heatsinking without insulating hardware.

Pin/Terminal	Circuit Role	Design Meaning
G	Gate	Control terminal accepting ±20 V DC and ±30 V AC gate-source voltage; requires 14.5 nC total charge for full enhancement
D	Drain	Main high-voltage power terminal; electrically tied to isolated metal tab for low-inductance heatsink attachment
S	Source	Power return and reference node for gate drive; connects to primary ground in flyback transformer configurations

Key Features

Feature	Design Value
aMOS5™ process technology	Enables 0.53 Ω R_DS(ON) at 700 V while maintaining <1.4 pF Crss for low EMI and fast switching
Enhanced body diode	260 ns T_rr and 3.5 mC Q_rr reduce reverse recovery loss and eliminate need for external diode in synchronous flyback
100% UIS tested	Guarantees single-pulse avalanche energy ≥20 mJ at 8.5 A, supporting robust startup and overload protection
Optimized switching parameters	Low E_OSS (1.9 mJ @ 400 V) and balanced Q_gs/Q_gd ratio (5.5 nC / 2.6 nC) enable stable ZVS/ZCS implementation

Applications

USB PD Adapters	Flyback SMPS
Use Scenario: 65 W USB-C power delivery adapter operating from 90–264 VAC input with 300 kHz switching frequency. IC Role / Device Role / Timing Role: Primary-side high-voltage switch controlling energy transfer via transformer in discontinuous conduction mode (DCM). Use Value: 0.53 Ω R_DS(ON) and 14.5 nC Q_g minimize conduction + switching losses, enabling >94% efficiency at full load without active cooling.	Use Scenario: 100 W open-frame flyback converter for LED TV backlight power supply with 100% UIS-rated reliability. IC Role / Device Role / Timing Role: Main power switch handling 700 V blocking and 34 A pulsed drain current during transient overloads. Use Value: 800 V BVDSS at 150°C and 100 V/ns dv/dt ruggedness prevent false triggering and ensure long-term field reliability under line surges.
Smart Lighting Drivers	Industrial AC/DC Modules
Use Scenario: Dimmable smart LED driver with TRIAC dimmer compatibility and integrated PFC pre-regulator. IC Role / Device Role / Timing Role: Secondary-stage flyback switch managing output regulation and constant-current control under variable load. Use Value: Fast 260 ns body diode recovery eliminates audible noise and prevents cross-conduction in phase-cut dimming applications.	Use Scenario: DIN-rail mounted 48 V/2 A industrial AC/DC module requiring extended temperature operation (-40°C to +125°C ambient). IC Role / Device Role / Timing Role: Primary-side switching element with guaranteed 150°C maximum junction temperature and 5.0 °C/W R_θJC. Use Value: 0.62 V/°C BVDSS temperature coefficient maintains safe margin across full operating range, reducing derating overhead.

USB PD Adapters

Flyback SMPS

Use Scenario: 65 W USB-C power delivery adapter operating from 90–264 VAC input with 300 kHz switching frequency.

IC Role / Device Role / Timing Role: Primary-side high-voltage switch controlling energy transfer via transformer in discontinuous conduction mode (DCM).

Use Value: 0.53 Ω R_DS(ON) and 14.5 nC Q_g minimize conduction + switching losses, enabling >94% efficiency at full load without active cooling.

Use Scenario: 100 W open-frame flyback converter for LED TV backlight power supply with 100% UIS-rated reliability.

IC Role / Device Role / Timing Role: Main power switch handling 700 V blocking and 34 A pulsed drain current during transient overloads.

Use Value: 800 V BVDSS at 150°C and 100 V/ns dv/dt ruggedness prevent false triggering and ensure long-term field reliability under line surges.

Smart Lighting Drivers

Industrial AC/DC Modules

Use Scenario: Dimmable smart LED driver with TRIAC dimmer compatibility and integrated PFC pre-regulator.

IC Role / Device Role / Timing Role: Secondary-stage flyback switch managing output regulation and constant-current control under variable load.

Use Value: Fast 260 ns body diode recovery eliminates audible noise and prevents cross-conduction in phase-cut dimming applications.

Use Scenario: DIN-rail mounted 48 V/2 A industrial AC/DC module requiring extended temperature operation (-40°C to +125°C ambient).

IC Role / Device Role / Timing Role: Primary-side switching element with guaranteed 150°C maximum junction temperature and 5.0 °C/W R_θJC.

Use Value: 0.62 V/°C BVDSS temperature coefficient maintains safe margin across full operating range, reducing derating overhead.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STP7NK80ZFP	800 V BVDSS, 7 A ID, 1.5 Ω R_DS(ON), TO-220FP package	Lower current rating and higher R_DS(ON); suited for ≤30 W designs with space-constrained layouts	Select when lower cost and legacy footprint compatibility outweigh efficiency and thermal demands
IXFH30N60P	600 V BVDSS, 30 A ID, 0.2 Ω R_DS(ON), TO-247 package	Lower voltage rating but superior conduction loss; requires redesign for 230 VAC universal input	Choose only if system input is limited to 115 VAC or if board-level derating permits 600 V devices

Compared with STP7NK80ZFP and IXFH30N60P, the AOWF600A70F uniquely balances 700 V rating, 34 A capability, and 0.53 Ω R_DS(ON) in a thermally efficient TO-262F package - making it optimal for compact, high-density 65–100 W universal-input adapters where both voltage margin and thermal headroom are critical.

Availability

AOWF600A70F is available at Aetrix Electronics and suitable for USB PD adapters, flyback SMPS, and smart lighting drivers requiring stable component supply, consistent parametric performance, and long-term production continuity.

Supply support for AOWF600A70F 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 AOWF600A70F belongs to AOS' aMOS5™ high-voltage MOSFET product line, engineered specifically for high-efficiency, high-reliability offline AC/DC conversion in space- and thermally-constrained applications.

FAQ

What is the maximum continuous drain current for the AOWF600A70F at TC = 100°C?

The AOWF600A70F supports 2.2 A continuous drain current at case temperature (TC) of 100°C, as specified in its Absolute Maximum Ratings table. This value reflects thermal derating from the 34 A pulsed rating and assumes proper heatsinking with R_θJC = 5.0 °C/W. Designers must verify actual PCB copper area and airflow to sustain this current in real-world AOWF600A70F implementations.

Does the AOWF600A70F have a fully characterized body diode for synchronous rectification?

Yes, the AOWF600A70F features an enhanced body diode with documented T_rr = 260 ns, Q_rr = 3.5 mC, and V_SD = 0.86–1.2 V at IS = 4 A. These parameters are measured per JEDEC standards and validated across temperature, enabling reliable use in quasi-resonant flyback topologies without external diodes - a key advantage of the AOWF600A70F over generic HV MOSFETs.

What is the gate threshold voltage range for the AOWF600A70F, and how does it affect drive circuit design?

The AOWF600A70F has a gate threshold voltage (V_GS(th)) range of 3.4 V to 4.6 V at TJ = 25°C, with typical 4.0 V. This tight distribution ensures consistent turn-on behavior across temperature and batch, allowing gate drivers to operate reliably with 10 V logic-level signals. The AOWF600A70F's ±20 V absolute maximum V_GS also permits robust gate protection in noisy environments.

Can the AOWF600A70F be used in avalanche-mode operation, and what is its rated single-pulse energy?

Yes, the AOWF600A70F is 100% UIS tested and rated for single-pulse avalanche energy of 20 mJ under standardized test conditions (L = 60 mH, I_AS = 0.8 A, R_G = 25 Ω, T_J = 25°C). This validated ruggedness makes the AOWF600A70F suitable for applications subject to inductive transients, such as relay driving or flyback startup, without requiring external clamping circuits.

What is the recommended gate resistor value for optimizing EMI and switching loss trade-offs with the AOWF600A70F?

Based on the AOWF600A70F's 14.5 nC Q_g and 2.6 nC Q_gd, a 5 Ω gate resistor is recommended for 100–200 kHz flyback operation to balance switching speed and EMI. Lower values (<3 Ω) increase dv/dt stress and radiated emissions; higher values (>10 Ω) raise turn-off losses. Layout-dependent parasitics require empirical tuning - always validate using the AOWF600A70F's actual gate-charge curve (Figure 7) and SOA limits.

AOWF600A70F Specifications

Product attributes: Attribute value

Manufacturer:: Alpha & Omega Semiconductor Inc.

Series:: aMOS5™

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):: 700 V

Current - Continuous Drain (Id) @ 25°C:: 8.5A (Tj)

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

Rds On (Max) @ Id, Vgs:: 600mOhm @ 2.5A, 10V

Vgs(th) (Max) @ Id:: 4V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 14.5 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 900 pF @ 100 V

FET Feature:: -

Power Dissipation (Max):: 25W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-262F

AOWF600A70F FAQ

1.How can I place an order for AOWF600A70F through Aetrix?

Please submit a Request for Quotation (RFQ) for AOWF600A70F 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 AOWF600A70F reliable?

The price and inventory of AOWF600A70F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOWF600A70F is usually 5 days.

3.What payment methods are accepted for AOWF600A70F?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOWF600A70F transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AOWF600A70F?

AOWF600A70F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AOWF600A70F 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 AOWF600A70F?

For technical support, including AOWF600A70F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOWF600A70F requirements.

6.How does Aetrix verify that AOWF600A70F is sourced from the original manufacturer or authorized distributors?

All AOWF600A70F 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 AOWF600A70F meets industry standards.

7.What is the process for return or replacement of AOWF600A70F?

All AOWF600A70F units undergo pre-shipment inspection (PSI). If there is an issue with AOWF600A70F, 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 AOWF600A70F part is unused and in its original packaging.

Return procedure for AOWF600A70F:

1.Submit a request within 90 days.

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

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