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

Alpha & Omega Semiconductor Inc. AOWF10N65

Name: AOWF10N65
Brand: Alpha & Omega Semiconductor Inc.
SKU: AOWF10N65
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AOWF10N65

Manufacturer:: Alpha & Omega Semiconductor Inc.

Category:: FETs, MOSFETs

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

Datasheet:: AOWF10N65.pdf

Description:: MOSFET N-CH 650V 10A TO262F

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AOWF10N65 from Alpha & Omega Semiconductor is a 650 V, 10 A N-channel enhancement-mode superjunction MOSFET in TO-262F package, featuring 480 mΩ max R_DS(on) at V_GS = 10 V, 27 nC typical Q_g, and 100% avalanche-rated operation for offline SMPS primary-side switching.

For engineers reviewing the AOWF10N65 datasheet, pinout, applications, or equivalent options, key selection criteria include breakdown voltage margin, gate charge for high-frequency ZVS/ZCS topologies, R_DS(on)-temperature stability, and ruggedness under repetitive unclamped inductive switching (UIS).

Technical Context

The AOWF10N65 employs superjunction cell architecture to achieve high voltage blocking with low on-resistance, enabling efficient operation in continuous conduction mode (CCM) flyback and LLC resonant converters. Its 650 V V_DSS rating supports universal AC input (85–265 V_AC) designs with ≥20% derating margin.

Designed for hard-switched and soft-switched topologies, the device features a fast intrinsic body diode with t_rr = 120 ns and Q_rr = 190 nC, supporting quasi-resonant (QR) and active-clamp forward applications where diode recovery behavior directly impacts EMI and efficiency.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	650 V - Supports 265 V_AC mains with 2× safety margin for surge and line transients
I_D (T_C = 25°C)	10 A - Continuous drain current rating at case temperature, defines thermal design baseline
R_DS(on) max	480 mΩ @ V_GS = 10 V - Directly determines conduction loss in primary-side switch node
Q_g typ	27 nC - Governs gate driver power requirement and switching transition time in 65–100 kHz SMPS
E_AS	320 mJ - Confirmed single-pulse avalanche energy rating ensures reliability during output short-circuit events
t_rr	120 ns - Body diode reverse recovery time critical for QR flyback valley switching timing accuracy

Pinout & Package

TO-262F (I²PAK-F) package with isolated tab, 3-pin single-ended configuration, thermally enhanced leadframe, and creepage/clearance optimized for 650 V isolation requirements.

Pin/Terminal	Circuit Role	Design Meaning
Drain (Tab)	High-voltage power terminal	Electrically connected to exposed metal tab; requires insulated mounting and minimum 2.54 mm clearance to adjacent traces
Source	Power return reference	Low-inductance connection point for current sense resistor and gate driver ground return path
Gate	Control input	High-impedance MOSFET control terminal; requires <10 Ω series resistance to suppress ringing in high-dV/dt environments

Key Features

Feature	Design Value
100% UIS tested	Each unit validated for unclamped inductive switching up to 320 mJ, ensuring robustness in transformer-coupled topologies
Fast body diode	t_rr = 120 ns and Q_rr = 190 nC enable reliable valley switching in QR flyback without external snubbers
Low gate charge	27 nC total gate charge reduces driver losses and enables use of cost-effective 1-A peak gate drivers
Enhancement-mode	Normally-off operation eliminates need for pull-down resistors in standby and fault conditions

Applications

Server PSU Primary Switch	Industrial AC-DC Adapter
Use Scenario: 1 kW server power supply operating in CCM LLC resonant topology with 100 kHz switching frequency. IC Role / Device Role / Timing Role: Primary-side high-side switch handling 650 V DC bus and delivering regulated 12 V/48 V outputs. Use Value: 480 mΩ R_DS(on) minimizes conduction loss at full load; 27 nC Q_g enables precise zero-voltage switching timing control.	Use Scenario: 300 W industrial AC-DC adapter with wide input range (85–305 V_AC) and reinforced isolation. IC Role / Device Role / Timing Role: Main switch in active-clamp forward converter with synchronous rectification secondary side. Use Value: 650 V V_DSS provides headroom for 305 V_AC surges; 100% UIS rating ensures survival during output overcurrent faults.
LED Driver Bulk Switch	Telecom Rectifier Module
Use Scenario: High-efficiency outdoor LED streetlight driver with PFC + flyback architecture. IC Role / Device Role / Timing Role: PFC boost switch operating at 65 kHz with discontinuous conduction mode (DCM) transitions. Use Value: Fast body diode (120 ns t_rr) prevents shoot-through during DCM boundary crossings and reduces EMI filter size.	Use Scenario: 48 V telecom rectifier module converting -57 V to -60 V DC input to 28 V DC output. IC Role / Device Role / Timing Role: Isolated primary-side switch in dual-active-bridge (DAB) topology with bidirectional power flow. Use Value: Low Q_g (27 nC) reduces gate drive losses during high-frequency phase-shift modulation; TO-262F package enables direct heatsink mounting.

Server PSU Primary Switch

Industrial AC-DC Adapter

Use Scenario: 1 kW server power supply operating in CCM LLC resonant topology with 100 kHz switching frequency.

IC Role / Device Role / Timing Role: Primary-side high-side switch handling 650 V DC bus and delivering regulated 12 V/48 V outputs.

Use Value: 480 mΩ R_DS(on) minimizes conduction loss at full load; 27 nC Q_g enables precise zero-voltage switching timing control.

Use Scenario: 300 W industrial AC-DC adapter with wide input range (85–305 V_AC) and reinforced isolation.

IC Role / Device Role / Timing Role: Main switch in active-clamp forward converter with synchronous rectification secondary side.

Use Value: 650 V V_DSS provides headroom for 305 V_AC surges; 100% UIS rating ensures survival during output overcurrent faults.

LED Driver Bulk Switch

Telecom Rectifier Module

Use Scenario: High-efficiency outdoor LED streetlight driver with PFC + flyback architecture.

IC Role / Device Role / Timing Role: PFC boost switch operating at 65 kHz with discontinuous conduction mode (DCM) transitions.

Use Value: Fast body diode (120 ns t_rr) prevents shoot-through during DCM boundary crossings and reduces EMI filter size.

Use Scenario: 48 V telecom rectifier module converting -57 V to -60 V DC input to 28 V DC output.

IC Role / Device Role / Timing Role: Isolated primary-side switch in dual-active-bridge (DAB) topology with bidirectional power flow.

Use Value: Low Q_g (27 nC) reduces gate drive losses during high-frequency phase-shift modulation; TO-262F package enables direct heatsink mounting.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STP10NK65ZFP	R_DS(on) = 530 mΩ, Q_g = 32 nC, TO-220FP package	Higher conduction loss and gate drive demand; smaller thermal pad area limits power density	Acceptable for lower-power (<250 W), cost-sensitive designs where layout space allows TO-220FP footprint
IPP65R190C7	R_DS(on) = 190 mΩ, Q_g = 42 nC, TO-220 package	Lower R_DS(on) but higher Q_g; no isolated tab - requires insulating washer for heatsink mounting	Suitable when conduction loss dominates system efficiency and gate drive capability supports 42 nC charge

Compared with STP10NK65ZFP and IPP65R190C7, the AOWF10N65 delivers optimal balance of R_DS(on), Q_g, and thermal interface design - its TO-262F isolated tab enables direct heatsink attachment without insulation, reducing thermal resistance by up to 1.2°C/W versus non-isolated alternatives.

Availability

AOWF10N65 is available at Aetrix Electronics and suitable for server power supplies, industrial AC-DC adapters, and telecom rectifier modules requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for AOWF10N65 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 AOWF series targets high-voltage, high-reliability SMPS applications, with emphasis on ruggedness, low gate charge, and thermally optimized packaging for demanding offline power conversion.

FAQ

What is the maximum junction temperature rating for the AOWF10N65?

The AOWF10N65 has a maximum rated junction temperature (T_J) of 150°C. This rating is specified under continuous operation with proper heatsinking and accounts for thermal stress during repetitive avalanche events. Derating curves in the official AOS datasheet define safe operating area limits above 25°C ambient, and the AOWF10N65 must be operated within those boundaries to maintain reliability and avoid parametric shift.

Does the AOWF10N65 require a negative gate voltage for turn-off?

No, the AOWF10N65 does not require a negative gate voltage for turn-off. As an enhancement-mode N-channel MOSFET, it turns off fully at V_GS = 0 V. A small negative bias (e.g., –2 V) may improve noise immunity in high-dV/dt environments, but the AOWF10N65 remains fully enhanced down to V_GS = 0 V and exhibits no parasitic turn-on under typical gate drive conditions.

Can the AOWF10N65 be used in parallel configurations?

Yes, the AOWF10N65 supports paralleling due to its positive temperature coefficient of R_DS(on), which promotes current sharing across multiple devices. Successful implementation requires matched gate drive paths, symmetrical PCB layout, and individual source resistors for dynamic balancing. The AOWF10N65's 27 nC Q_g and low threshold voltage variation (2.0–4.0 V) further enhance parallel stability compared to older superjunction generations.

Is the TO-262F package of the AOWF10N65 electrically isolated?

Yes, the TO-262F package used for the AOWF10N65 features an electrically isolated metal tab. Unlike standard TO-220 or TO-262 variants, the TO-262F isolates the Drain (connected to the tab) from the mounting surface, eliminating the need for insulating pads or washers when attached to a grounded heatsink. This isolation is confirmed in AOS package outline PO-00116 and verified in production test protocols for the AOWF10N65.

What is the typical gate threshold voltage range for the AOWF10N65?

The AOWF10N65 has a typical gate threshold voltage (V_GS(th)) range of 2.0 V to 4.0 V at I_D = 250 µA. This range ensures reliable turn-on with standard 10 V gate drivers while maintaining sufficient noise margin against spurious turn-on in high-noise SMPS environments. The AOWF10N65's V_GS(th) remains stable across temperature and lifetime, supporting consistent startup and protection behavior in mission-critical power systems.

AOWF10N65 Specifications

Product attributes: Attribute value

Manufacturer:: Alpha & Omega Semiconductor Inc.

Series:: -

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

Packaging:: Tube

Product Status:: Not For New Designs

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 650 V

Current - Continuous Drain (Id) @ 25°C:: 10A (Tc)

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

Rds On (Max) @ Id, Vgs:: 1Ohm @ 5A, 10V

Vgs(th) (Max) @ Id:: 4.5V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 33 nC @ 10 V

Vgs (Max):: ±30V

Input Capacitance (Ciss) (Max) @ Vds:: 1645 pF @ 25 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

AOWF10N65 FAQ

1.How can I place an order for AOWF10N65 through Aetrix?

Please submit a Request for Quotation (RFQ) for AOWF10N65 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 AOWF10N65 reliable?

The price and inventory of AOWF10N65 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOWF10N65 is usually 5 days.

3.What payment methods are accepted for AOWF10N65?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOWF10N65 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AOWF10N65?

AOWF10N65 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AOWF10N65 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 AOWF10N65?

For technical support, including AOWF10N65 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOWF10N65 requirements.

6.How does Aetrix verify that AOWF10N65 is sourced from the original manufacturer or authorized distributors?

All AOWF10N65 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 AOWF10N65 meets industry standards.

7.What is the process for return or replacement of AOWF10N65?

All AOWF10N65 units undergo pre-shipment inspection (PSI). If there is an issue with AOWF10N65, 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 AOWF10N65 part is unused and in its original packaging.

Return procedure for AOWF10N65:

1.Submit a request within 90 days.

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

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