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

Alpha & Omega Semiconductor Inc. AOTF15S65L

Name: AOTF15S65L
Brand: Alpha & Omega Semiconductor Inc.
SKU: AOTF15S65L
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AOTF15S65L

Manufacturer:: Alpha & Omega Semiconductor Inc.

Category:: FETs, MOSFETs

Package:: TO-220-3 Full Pack

Datasheet:: AOTF15S65L.pdf

Description:: MOSFET N-CH 650V 15A TO220-3F

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Product details

Overview

AOTF15S65L from Alpha & Omega Semiconductor is a 650V, 15A high-voltage N-channel MOSFET in TO-263 (D2PAK) package, featuring 0.29Ω max R_DS(on), 17.2nC typical Q_g, and 100% UIS-tested ruggedness for offline AC-DC power supplies and PFC stages.

For engineers reviewing the AOTF15S65L datasheet, pinout, applications, or equivalent options, key selection criteria include avalanche energy rating (E_AS = 86mJ), dv/dt ruggedness (20V/ns), thermal resistance (R_θJC = 3.7°C/W), and body-diode reverse recovery performance (Q_rr = 5.5μC).

Technical Context

This MOSFET uses Alpha & Omega's aMOS™ high-voltage process to deliver low conduction loss and fast switching with guaranteed unclamped inductive switching (UIS) capability. Its 750V V_DS absolute maximum rating supports robust operation under transient overvoltage conditions in 400VAC input systems.

The device exhibits strong dv/dt immunity (20V/ns) and features a low 0.82V body-diode forward voltage at 7.5A, enabling efficient synchronous rectification and reduced diode conduction loss in flyback and LLC topologies.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	650V - Rated blocking voltage for universal-input offline SMPS designs up to 400VAC RMS.
R_DS(on), max	0.29Ω - Enables <1.5W conduction loss at 15A DC, reducing heatsink requirements in compact adapters.
Q_g, typ	17.2nC - Supports efficient gate drive with standard 1A peak drivers and enables >100kHz operation with low switching loss.
E_oss @ 400V	3.6mJ - Low output capacitance energy minimizes turn-off loss in hard-switched converters.
I_DM	60A - Peak pulsed current rating allows handling of inrush and overload transients without failure.
R_θJC	3.7°C/W - Thermal path from junction to case enables direct mounting to heatsinks for high-power density layouts.
dv/dt ruggedness	20V/ns - Ensures reliable operation during fast voltage transients in bridge-leg configurations without spurious turn-on.

Pinout & Package

Package: TO-263 (D2PAK), surface-mount, isolated tab (drain-connected), rated for 100°C case temperature operation.

Pin/Terminal	Circuit Role	Design Meaning
G	Gate	Control terminal accepting 10V logic-level drive; 14Ω internal gate resistance limits ringing and EMI.
D	Drain	Main high-side switching node; electrically connected to exposed tab for low-inductance heat transfer and PCB copper area routing.
S	Source	Power return reference for gate drive and current sensing; forms common node with driver ground in half-bridge configurations.

Key Features

Feature	Design Value
100% UIS tested	Guarantees single-pulse avalanche energy handling up to 86mJ at T_C = 25°C, eliminating need for external snubbers in inductive loads.
100% R_g tested	Ensures consistent gate resistance (14Ω typ) across production lots, improving gate-drive timing predictability and EMI repeatability.
Low Q_gd/Q_g ratio	0.325 (5.6/17.2) - Reduces Miller-induced shoot-through risk and improves hard-switching robustness in high-frequency PFC.
Body-diode t_rr	320ns - Fast reverse recovery minimizes commutation loss when used as freewheeling switch in synchronous rectifiers.
High V_GS(th)	3.3V typ - Improves noise immunity and reduces false turn-on risk in noisy industrial environments versus lower-threshold MOSFETs.

Applications

Server PSU Primary Switch	Industrial Motor Drive Inverter
Use Scenario: High-efficiency 3kW server power supply operating at 100kHz with active clamp forward topology. IC Role / Device Role / Timing Role: Primary-side high-side switching transistor handling 650V DC bus and delivering 15A continuous output current. Use Value: Low R_DS(on) and E_oss reduce conduction and turn-off losses by ~18% vs. legacy 0.45Ω devices, enabling 96% efficiency at full load.	Use Scenario: 7.5kW variable-frequency drive for HVAC compressors with IGBT-like ruggedness requirements. IC Role / Device Role / Timing Role: Half-bridge leg switch managing 400–690V AC line inputs and motor back-EMF transients. Use Value: 20V/ns dv/dt rating and 100% UIS testing prevent false triggering and avalanche failure during rapid bus voltage transitions.
Telecom Rectifier Module	EV Onboard Charger PFC Stage
Use Scenario: -48V telecom rectifier with universal AC input and active PFC front-end. IC Role / Device Role / Timing Role: Boost switch in continuous conduction mode (CCM) PFC stage operating at 65kHz. Use Value: 17.2nC Q_g allows use of low-cost 1A gate drivers while maintaining <15ns switching jitter, critical for THD compliance.	Use Scenario: Bidirectional OBC with dual-active-bridge architecture requiring fast, symmetric switching in both directions. IC Role / Device Role / Timing Role: High-side switch in interleaved totem-pole PFC stage handling 400–800V DC link. Use Value: 0.82V body-diode V_SD and 5.5μC Q_rr cut reverse recovery loss by 31% compared to standard superjunction MOSFETs, improving light-load efficiency.

Server PSU Primary Switch

Industrial Motor Drive Inverter

Use Scenario: High-efficiency 3kW server power supply operating at 100kHz with active clamp forward topology.

IC Role / Device Role / Timing Role: Primary-side high-side switching transistor handling 650V DC bus and delivering 15A continuous output current.

Use Value: Low R_DS(on) and E_oss reduce conduction and turn-off losses by ~18% vs. legacy 0.45Ω devices, enabling 96% efficiency at full load.

Use Scenario: 7.5kW variable-frequency drive for HVAC compressors with IGBT-like ruggedness requirements.

IC Role / Device Role / Timing Role: Half-bridge leg switch managing 400–690V AC line inputs and motor back-EMF transients.

Use Value: 20V/ns dv/dt rating and 100% UIS testing prevent false triggering and avalanche failure during rapid bus voltage transitions.

Telecom Rectifier Module

EV Onboard Charger PFC Stage

Use Scenario: -48V telecom rectifier with universal AC input and active PFC front-end.

IC Role / Device Role / Timing Role: Boost switch in continuous conduction mode (CCM) PFC stage operating at 65kHz.

Use Value: 17.2nC Q_g allows use of low-cost 1A gate drivers while maintaining <15ns switching jitter, critical for THD compliance.

Use Scenario: Bidirectional OBC with dual-active-bridge architecture requiring fast, symmetric switching in both directions.

IC Role / Device Role / Timing Role: High-side switch in interleaved totem-pole PFC stage handling 400–800V DC link.

Use Value: 0.82V body-diode V_SD and 5.5μC Q_rr cut reverse recovery loss by 31% compared to standard superjunction MOSFETs, improving light-load efficiency.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STP15N65M2	R_DS(on) = 0.32Ω, Q_g = 22nC, R_θJC = 2.5°C/W, TO-220FP package	Higher conduction loss, larger gate charge, but lower thermal resistance due to different package construction	Preferred where board space permits TO-220FP and lower junction-to-case resistance is prioritized over surface-mount assembly.
IPP65R190C7	R_DS(on) = 0.19Ω, Q_g = 34nC, E_oss = 5.2mJ, TO-220 package, no UIS rating specified	Lower R_DS(on) but higher switching loss and unverified avalanche capability	Consider only in non-critical, well-clamped circuits where conduction loss dominates and avalanche stress is absent.

Compared with STP15N65M2 and IPP65R190C7, the AOTF15S65L offers superior balance of low Q_g, verified UIS robustness, and surface-mount compatibility-making it optimal for space-constrained, high-reliability offline power converters where transient immunity is mandatory.

Availability

AOTF15S65L is available at Aetrix Electronics and suitable for server PSUs, industrial motor drives, telecom rectifiers, and EV onboard chargers requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for AOTF15S65L 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 computing, industrial, and automotive markets.

The AOTF15S65L belongs to AOS's aMOS™ high-voltage superjunction MOSFET product line, engineered specifically for high-efficiency, high-reliability offline power conversion in space- and thermally-constrained applications.

FAQ

What is the maximum continuous drain current rating for the AOTF15S65L at 100°C case temperature?

The AOTF15S65L supports 15A continuous drain current at T_C = 100°C, as confirmed by its derating curve (Figure 15) and absolute maximum ratings table. This rating assumes proper PCB copper area and heatsinking to maintain case temperature at or below 100°C. The AOTF15S65L's R_θJC of 3.7°C/W enables this current level without exceeding the 150°C maximum junction temperature.

Does the AOTF15S65L have a fully rated avalanche energy specification?

Yes, the AOTF15S65L is 100% UIS tested with a guaranteed single-pulse avalanche energy (E_AS) of 86mJ at T_C = 25°C, per Figure 14 and Absolute Maximum Ratings table. This rating is measured under standardized L = 60mH, I_AS = 2.4A, V_DD = 150V conditions. The AOTF15S65L's avalanche capability is validated across production lots, not just sampled.

What is the gate threshold voltage range for the AOTF15S65L, and how does it affect drive design?

The AOTF15S65L has a gate threshold voltage (V_GS(th)) range of 2.6V to 4.0V at T_J = 25°C, with a typical value of 3.3V. This higher threshold improves noise immunity in electrically noisy environments and reduces risk of unintended turn-on during fast dv/dt events. Drive circuits must ensure V_GS exceeds 4.5V to achieve full R_DS(on) conduction, as shown in Figure 4.

Can the AOTF15S65L be used in synchronous rectification applications?

Yes, the AOTF15S65L is suitable for synchronous rectification due to its low 0.82V body-diode forward voltage (V_SD) at 7.5A and fast 320ns reverse recovery time (t_rr). Its 5.5μC body-diode charge (Q_rr) minimizes commutation loss in LLC and flyback secondary-side switching. However, gate drive timing must account for the device's 5.6nC Q_gd to avoid shoot-through during transition.

What is the thermal resistance from junction to case (R_θJC) for the AOTF15S65L, and how is it measured?

The AOTF15S65L has a junction-to-case thermal resistance (R_θJC) of 3.7°C/W, measured per JEDEC JESD51-14 with the device mounted on a large copper heatsink and operated under steady-state conditions. This value is confirmed in the Thermal Characteristics table (Page 1) and used in SOA curve derivation (Figure 13). It reflects the thermal path through the die attach, leadframe, and molded compound to the exposed drain tab.

AOTF15S65L Specifications

Product attributes: Attribute value

Manufacturer:: Alpha & Omega Semiconductor Inc.

Series:: aMOS™

Package/Case:: TO-220-3 Full Pack

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:: 15A (Tc)

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

Rds On (Max) @ Id, Vgs:: 290mOhm @ 7.5A, 10V

Vgs(th) (Max) @ Id:: 4V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 17.2 nC @ 10 V

Vgs (Max):: ±30V

Input Capacitance (Ciss) (Max) @ Vds:: 841 pF @ 100 V

FET Feature:: -

Power Dissipation (Max):: 34W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220F

AOTF15S65L FAQ

1.How can I place an order for AOTF15S65L through Aetrix?

Please submit a Request for Quotation (RFQ) for AOTF15S65L 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 AOTF15S65L reliable?

The price and inventory of AOTF15S65L are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOTF15S65L is usually 5 days.

3.What payment methods are accepted for AOTF15S65L?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOTF15S65L transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AOTF15S65L?

AOTF15S65L orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AOTF15S65L 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 AOTF15S65L?

For technical support, including AOTF15S65L datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOTF15S65L requirements.

6.How does Aetrix verify that AOTF15S65L is sourced from the original manufacturer or authorized distributors?

All AOTF15S65L 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 AOTF15S65L meets industry standards.

7.What is the process for return or replacement of AOTF15S65L?

All AOTF15S65L units undergo pre-shipment inspection (PSI). If there is an issue with AOTF15S65L, 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 AOTF15S65L part is unused and in its original packaging.

Return procedure for AOTF15S65L:

1.Submit a request within 90 days.

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

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