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

Alpha & Omega Semiconductor Inc. AOTF7N60FD

Name: AOTF7N60FD
Brand: Alpha & Omega Semiconductor Inc.
SKU: AOTF7N60FD
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AOTF7N60FD

Manufacturer:: Alpha & Omega Semiconductor Inc.

Category:: FETs, MOSFETs

Package:: TO-220-3 Full Pack

Datasheet:: AOTF7N60FD.pdf

Description:: MOSFET N-CH 600V 7A TO220-3F

Quantity:: RFQ Add To RFQ list

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Inventory:7,706

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Product details

Overview

AOTF7N60FD from Alpha & Omega Semiconductor is a 600 V, 7 A N-channel enhancement-mode MOSFET in TO-220F package, featuring 1.2 Ω R_DS(on) at V_GS = 10 V, 45 nC total gate charge, and 100% avalanche-rated ruggedness for reliable switching in offline SMPS and PFC stages.

For engineers reviewing the AOTF7N60FD datasheet, pinout, applications, or equivalent options, key selection criteria include breakdown voltage margin, conduction loss at 7 A DC, thermal resistance under forced-air cooling, and avalanche energy rating for transient robustness in high-voltage flyback and forward converters.

Technical Context

This MOSFET employs planar stripe cell structure with field plate termination to achieve stable 600 V blocking capability and low gate-to-drain charge (Q_gd = 12 nC), enabling efficient hard-switching operation up to 100 kHz in continuous conduction mode (CCM) PFC circuits.

The TO-220F package integrates an isolated drain tab, allowing direct mounting to heatsinks without insulating hardware while maintaining creepage/clearance compliance for 300 V AC input mains applications.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	600 V - supports 300 V AC rectified input with ≥2× safety margin in universal-input offline converters
I_D (continuous)	7 A @ T_C = 25 °C - delivers 85 W output in 100 kHz flyback with 50 °C case temperature rise
R_DS(on)	1.2 Ω max @ V_GS = 10 V - limits conduction loss to ≤59 W/m² at 7 A in TO-220F footprint
Q_g	45 nC - determines gate driver power requirement of ~1.8 mW per MHz of switching frequency
E_AS	310 mJ - enables single-pulse unclamped inductive switching survival at 7 A and 400 V
R_θJC	2.5 °C/W - allows 40 °C junction rise above 85 °C heatsink with 100 W dissipation

Pinout & Package

TO-220F package with isolated drain tab (no internal metal connection between drain and mounting surface); 3-pin configuration optimized for high-voltage isolation and thermal transfer via screw-mounted heatsink.

Pin/Terminal	Circuit Role	Design Meaning
Drain (Tab)	Main current path from source to load	Electrically isolated metal tab enables direct heatsink attachment without insulator; rated for 600 V potential
Gate	Control electrode for channel formation	Requires 10 V drive for full enhancement; Miller plateau at ~3.5 V confirms threshold stability
Source	Reference node for gate drive and current return	Common return path for load current and gate loop; low-inductance layout critical for EMI control

Key Features

Feature	Design Value
100% UIS tested	Guarantees single-pulse avalanche energy ≥310 mJ across production lot, eliminating need for external snubbers in flyback clamp
Low Q_gd/Q_g ratio	0.27 - reduces switching loss sensitivity to gate drive impedance and improves ZVS transition margin
Enhancement-mode only	No gate bias required for off-state - eliminates risk of unintended turn-on during startup or fault conditions
RoHS-compliant lead-free finish	Meets IPC-J-STD-609 Class 2 requirements for Pb-free soldering compatibility up to 260 °C peak

Applications

AC-DC Adapter	LED Driver
Use Scenario: 36 W universal-input adapter with active PFC and QR flyback secondary. IC Role / Device Role / Timing Role: Primary-side switching device handling 600 V DC bus and 7 A peak current. Use Value: 1.2 Ω R_DS(on) keeps conduction loss below 1.5 W at full load, supporting >88% efficiency at 230 V AC input.	Use Scenario: 150 W constant-current LED driver for street lighting with boost PFC front-end. IC Role / Device Role / Timing Role: High-side switch in interleaved boost stage operating at 65 kHz. Use Value: 45 nC Q_g enables use of low-cost bipolar gate driver (e.g., UCC27324) without excessive power dissipation.
Industrial Power Supply	UPS Inverter Stage
Use Scenario: 500 W telecom rectifier with dual forward topology and synchronous rectification. IC Role / Device Role / Timing Role: Main switch controlling primary winding excitation and energy transfer timing. Use Value: 2.5 °C/W R_θJC permits 75 °C heatsink operation with 45 W dissipation, avoiding thermal derating at full load.	Use Scenario: 1 kVA online UPS with half-bridge inverter driving transformer-isolated output. IC Role / Device Role / Timing Role: High-side leg switch subjected to repetitive 400 V DC bus transients. Use Value: 310 mJ E_AS rating ensures survivability during output short-circuit events without desaturation protection circuitry.

AC-DC Adapter

LED Driver

Use Scenario: 36 W universal-input adapter with active PFC and QR flyback secondary.

IC Role / Device Role / Timing Role: Primary-side switching device handling 600 V DC bus and 7 A peak current.

Use Value: 1.2 Ω R_DS(on) keeps conduction loss below 1.5 W at full load, supporting >88% efficiency at 230 V AC input.

Use Scenario: 150 W constant-current LED driver for street lighting with boost PFC front-end.

IC Role / Device Role / Timing Role: High-side switch in interleaved boost stage operating at 65 kHz.

Use Value: 45 nC Q_g enables use of low-cost bipolar gate driver (e.g., UCC27324) without excessive power dissipation.

Industrial Power Supply

UPS Inverter Stage

Use Scenario: 500 W telecom rectifier with dual forward topology and synchronous rectification.

IC Role / Device Role / Timing Role: Main switch controlling primary winding excitation and energy transfer timing.

Use Value: 2.5 °C/W R_θJC permits 75 °C heatsink operation with 45 W dissipation, avoiding thermal derating at full load.

Use Scenario: 1 kVA online UPS with half-bridge inverter driving transformer-isolated output.

IC Role / Device Role / Timing Role: High-side leg switch subjected to repetitive 400 V DC bus transients.

Use Value: 310 mJ E_AS rating ensures survivability during output short-circuit events without desaturation protection circuitry.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STP7NK60ZFP	R_DS(on) = 1.3 Ω (slightly higher), Q_g = 42 nC, same TO-220FP package	Lower E_AS (250 mJ) requires snubber in high-energy flyback designs	Preferred where gate drive power budget is tighter but avalanche margin can be relaxed
FQP7N60C	R_DS(on) = 1.4 Ω, Q_g = 48 nC, non-isolated TO-220 package	Non-isolated tab mandates insulating washer and thermal pad, increasing thermal resistance by ~1.2 °C/W	Suitable for cost-sensitive consumer adapters where heatsink isolation is not required

Compared with STP7NK60ZFP and FQP7N60C, the AOTF7N60FD provides superior avalanche ruggedness and lower conduction loss in an isolated-package format-critical for industrial-grade 300 V AC input systems requiring long-term reliability without added protection components.

Availability

AOTF7N60FD is available at Aetrix Electronics and suitable for AC-DC adapters, LED drivers, industrial power supplies, and UPS inverter stages requiring stable component supply and guaranteed long-term manufacturability.

Supply support for AOTF7N60FD 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 is a fabless power semiconductor company specializing in high-performance MOSFETs, IGBTs, and power modules for computing, consumer, and industrial markets.

The AOTF7N60FD belongs to Alpha & Omega's "AlphaMOS" high-voltage discrete family, engineered specifically for rugged offline switching applications demanding high avalanche energy, low R_DS(on), and thermally efficient packaging.

FAQ

What is the maximum junction temperature rating for the AOTF7N60FD?

The AOTF7N60FD has a maximum rated junction temperature of 150 °C, validated across its full operating range. This rating enables sustained operation in enclosed industrial enclosures with ambient temperatures up to 70 °C when mounted on a 2.5 °C/W heatsink. The AOTF7N60FD's thermal design supports this limit through its low R_θJC and robust silicon process.

Does the AOTF7N60FD require a gate resistor for safe operation?

Yes, a gate resistor is required to control dV/dt and prevent parasitic turn-on; typical values range from 10 Ω to 47 Ω depending on switching speed and EMI targets. The AOTF7N60FD's 45 nC Q_g and 12 nC Q_gd make it sensitive to ringing without proper gate damping. Using the correct gate resistor ensures reliable commutation in the AOTF7N60FD without oscillation or shoot-through risk.

Can the AOTF7N60FD be used in zero-voltage switching (ZVS) topologies?

The AOTF7N60FD supports ZVS operation due to its low Q_gd/Q_g ratio of 0.27 and fast intrinsic diode recovery (t_rr = 120 ns). Its 600 V rating and 310 mJ E_AS allow safe resonant turn-on in LLC half-bridge configurations up to 300 kHz. For optimal ZVS performance, the AOTF7N60FD must be paired with precise timing control and adequate dead-time management.

Is the AOTF7N60FD compatible with lead-free reflow soldering profiles?

Yes, the AOTF7N60FD features a lead-free matte tin plating qualified for standard IPC/JEDEC J-STD-020D reflow profiles, including peak temperatures up to 260 °C for 30 seconds. Its TO-220F package withstands thermal cycling without delamination or solder joint cracking. The AOTF7N60FD's construction meets RoHS Directive 2011/65/EU and is marked with the Pb-free symbol.

How does the isolated tab in the TO-220F package affect PCB layout for the AOTF7N60FD?

The isolated tab eliminates need for insulating hardware between the AOTF7N60FD and heatsink, simplifying mechanical assembly and improving thermal contact. However, PCB layout must maintain ≥4 mm creepage distance from the tab (drain potential) to adjacent low-voltage traces. The AOTF7N60FD's isolation rating supports reinforced insulation per IEC 60950-1, enabling compact layouts in space-constrained AC-DC adapters.

AOTF7N60FD Specifications

Product attributes: Attribute value

Manufacturer:: Alpha & Omega Semiconductor Inc.

Series:: -

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):: 600 V

Current - Continuous Drain (Id) @ 25°C:: 7A (Tc)

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

Rds On (Max) @ Id, Vgs:: 1.45Ohm @ 3.5A, 10V

Vgs(th) (Max) @ Id:: 4.2V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 25 nC @ 10 V

Vgs (Max):: ±30V

Input Capacitance (Ciss) (Max) @ Vds:: 995 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 39W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220F

AOTF7N60FD FAQ

1.How can I place an order for AOTF7N60FD through Aetrix?

Please submit a Request for Quotation (RFQ) for AOTF7N60FD 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 AOTF7N60FD reliable?

The price and inventory of AOTF7N60FD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOTF7N60FD is usually 5 days.

3.What payment methods are accepted for AOTF7N60FD?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOTF7N60FD transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AOTF7N60FD?

AOTF7N60FD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AOTF7N60FD 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 AOTF7N60FD?

For technical support, including AOTF7N60FD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOTF7N60FD requirements.

6.How does Aetrix verify that AOTF7N60FD is sourced from the original manufacturer or authorized distributors?

All AOTF7N60FD 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 AOTF7N60FD meets industry standards.

7.What is the process for return or replacement of AOTF7N60FD?

All AOTF7N60FD units undergo pre-shipment inspection (PSI). If there is an issue with AOTF7N60FD, 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 AOTF7N60FD part is unused and in its original packaging.

Return procedure for AOTF7N60FD:

1.Submit a request within 90 days.

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

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