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

Alpha & Omega Semiconductor Inc. AOI2N60A

Name: AOI2N60A
Brand: Alpha & Omega Semiconductor Inc.
SKU: AOI2N60A
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AOI2N60A

Manufacturer:: Alpha & Omega Semiconductor Inc.

Category:: FETs, MOSFETs

Package:: TO-251-3 Stub Leads, IPAK

Datasheet:: AOI2N60A.pdf

Description:: MOSFET N-CH 600V 2A TO251A

Quantity:: RFQ Add To RFQ list

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Inventory:8,870

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Product details

Overview

AOI2N60A from Alpha & Omega Semiconductor is a 600V, 2.4A N-channel enhancement-mode MOSFET in TO-251AA (IPAK) package, featuring 3.8Ω R_DS(on) at V_GS = 10V, 100% avalanche-rated operation, and RoHS-compliant green packaging. It serves as a high-voltage switching device in offline AC-DC power supplies and LED drivers.

For engineers reviewing the AOI2N60A datasheet, pinout, applications, or equivalent options, key selection criteria include its 600V V_DSS, 3.8Ω on-resistance, 100% UIS-rated ruggedness, TO-251AA thermal performance, and halogen-free compliance per AOS Green Policy.

Technical Context

This MOSFET employs planar stripe gate structure for stable high-voltage operation and optimized charge characteristics. Its 100% unclamped inductive switching (UIS) rating ensures reliability under transient overcurrent conditions in flyback and buck-derived topologies.

The device supports gate drive with standard 10V logic-level signals and exhibits low gate charge (Q_g = 9.5nC), enabling efficient switching in 65–100kHz SMPS designs without requiring specialized gate drivers.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	600V - supports primary-side switching in universal-input offline converters
I_D (continuous)	2.4A @ T_C = 25°C - suitable for low-to-medium power adapters up to ~25W
R_DS(on)	3.8Ω @ V_GS = 10V - enables low conduction loss in fixed-frequency hard-switched topologies
Q_g	9.5nC - reduces gate drive power and allows use of low-cost SOT-23 drivers
E_AS	175mJ - validated energy handling in unclamped inductive load tests
Package	TO-251AA (IPAK) - surface-mount variant of TO-220 footprint with improved thermal resistance vs. SO-8

Pinout & Package

AOI2N60A uses the TO-251AA (IPAK) package: a 3-lead, single-ended, surface-mount variant with drain-connected tab for enhanced thermal dissipation. The molded plastic body meets AOS Green Policy requirements (halogen-free, <900ppm Br/Cl).

Pin/Terminal	Circuit Role	Design Meaning
Drain (D)	Main current-carrying terminal	Internally connected to metal tab - must be electrically isolated from heatsink unless referenced to system ground
Gate (G)	Control input	Receives 10V logic-level signal; requires <10Ω series resistance to suppress ringing
Source (S)	Reference node for gate drive and current return	Provides common reference for driver IC and sense resistor placement in high-side or low-side configurations

Key Features

Feature	Design Value
100% UIS rated	Guarantees safe operation under worst-case inductive turn-off transients without external snubbers
Low Q_g/Q_gd ratio	Improves switching speed control and reduces Miller-induced shoot-through risk in half-bridge layouts
Halogen-free construction	Meets IEC 61249-2-21 and JEDEC JS709B standards; no brominated flame retardants in molding compound
Enhancement-mode operation	Ensures default-OFF behavior - eliminates need for pull-down resistors in standby mode

Applications

LED Driver Power Stage	Offline AC-DC Adapter
Use Scenario: Constant-current switching regulator driving 12–24V LED strings from 85–265V AC mains. IC Role / Device Role / Timing Role: Primary-side high-voltage switch in flyback topology operating at 65kHz. Use Value: 600V rating accommodates reflected output voltage plus leakage spike margin; 3.8Ω R_DS(on) limits conduction loss below 0.2W at 2.4A peak.	Use Scenario: Universal-input 12V/2A wall adapter powering IoT sensors and microcontrollers. IC Role / Device Role / Timing Role: Main power switch in discontinuous conduction mode (DCM) flyback converter. Use Value: Low Q_g enables clean gate transitions with minimal driver overhead; TO-251AA allows compact PCB layout without through-hole mounting.
Industrial Control PSU	Appliance Standby Supply
Use Scenario: 5V/0.5A auxiliary supply for PLC I/O modules operating in harsh ambient temperatures. IC Role / Device Role / Timing Role: High-side switch in buck-derived auxiliary converter powered from main DC bus. Use Value: 100% UIS rating ensures immunity to relay coil back-EMF and motor commutation spikes in shared power rails.	Use Scenario: Low-power 3.3V standby rail in washing machine mainboard, active 24/7. IC Role / Device Role / Timing Role: Low-duty-cycle switch in quasi-resonant flyback delivering <100mW continuous output. Use Value: Enhancement-mode default-OFF behavior prevents inadvertent power-up during brown-out events; halogen-free package complies with IEC 60335-1 appliance safety standards.

LED Driver Power Stage

Offline AC-DC Adapter

Use Scenario: Constant-current switching regulator driving 12–24V LED strings from 85–265V AC mains.

IC Role / Device Role / Timing Role: Primary-side high-voltage switch in flyback topology operating at 65kHz.

Use Value: 600V rating accommodates reflected output voltage plus leakage spike margin; 3.8Ω R_DS(on) limits conduction loss below 0.2W at 2.4A peak.

Use Scenario: Universal-input 12V/2A wall adapter powering IoT sensors and microcontrollers.

IC Role / Device Role / Timing Role: Main power switch in discontinuous conduction mode (DCM) flyback converter.

Use Value: Low Q_g enables clean gate transitions with minimal driver overhead; TO-251AA allows compact PCB layout without through-hole mounting.

Industrial Control PSU

Appliance Standby Supply

Use Scenario: 5V/0.5A auxiliary supply for PLC I/O modules operating in harsh ambient temperatures.

IC Role / Device Role / Timing Role: High-side switch in buck-derived auxiliary converter powered from main DC bus.

Use Value: 100% UIS rating ensures immunity to relay coil back-EMF and motor commutation spikes in shared power rails.

Use Scenario: Low-power 3.3V standby rail in washing machine mainboard, active 24/7.

IC Role / Device Role / Timing Role: Low-duty-cycle switch in quasi-resonant flyback delivering <100mW continuous output.

Use Value: Enhancement-mode default-OFF behavior prevents inadvertent power-up during brown-out events; halogen-free package complies with IEC 60335-1 appliance safety standards.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STP2N60FI	600V, 2.2A, R_DS(on) = 4.2Ω, TO-220 package	Through-hole mounting only; higher R_DS(on) increases conduction loss by ~10% at full load	Preferred where legacy TO-220 footprint and higher thermal mass are required
IPP60R190C6	600V, 2.5A, R_DS(on) = 190mΩ, Superjunction, TO-220FP	Lower R_DS(on) but higher Q_g (27nC); requires gate driver optimization	Selected when efficiency >88% at full load is mandatory and board space permits larger driver circuitry

Compared with STP2N60FI and IPP60R190C6, AOI2N60A offers balanced trade-offs: lower profile than TO-220 devices, better thermal interface than DPAK, and simpler gate drive than superjunction alternatives-ideal for cost-sensitive, space-constrained 20–25W designs.

Availability

AOI2N60A is available at Aetrix Electronics and suitable for offline AC-DC adapters, LED driver power stages, and industrial auxiliary power supplies requiring stable component supply across production lifecycles.

Supply support for AOI2N60A 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-efficiency MOSFETs, IGBTs, and power modules for power conversion systems.

The AOI2N60A belongs to AOS's general-purpose high-voltage MOSFET product line, designed for cost-effective, reliable switching in consumer and industrial offline power applications up to 30W.

FAQ

What is the maximum junction temperature rating for AOI2N60A?

The AOI2N60A has a maximum rated junction temperature (T_J) of 150°C. This rating is validated under steady-state thermal conditions with proper PCB copper area and airflow. Derating is required above 100°C ambient; the device's SOA curve must be observed in pulsed operation. AOI2N60A's thermal performance is specified for TO-251AA mounting on 1-in² 2-oz copper with 1000mm² exposed pad.

Does AOI2N60A support 5V gate drive?

No, AOI2N60A is not a logic-level MOSFET and does not guarantee full enhancement at 5V gate drive. Its R_DS(on) is specified at V_GS = 10V, and typical threshold voltage (V_GS(th)) ranges from 2.0V to 4.0V. Using 5V drive results in significantly higher R_DS(on) and conduction loss - AOI2N60A requires 10V nominal gate drive for optimal performance.

Is AOI2N60A halogen-free and RoHS compliant?

Yes, AOI2N60A is fully halogen-free and RoHS compliant per AOS Green Policy. It contains <900ppm bromine and chlorine individually, and total halogens <1500ppm. No brominated flame retardants are used in its molding compound. AOI2N60A was converted to green status prior to 2010 and carries no "L" suffix because TO-251AA was included in the initial green package rollout.

What is the UIS (unclamped inductive switching) capability of AOI2N60A?

AOI2N60A is 100% tested for unclamped inductive switching (UIS) with E_AS = 175mJ at T_J = 25°C. This rating reflects worst-case energy absorption during turn-off into an inductive load without external clamping. The test condition uses L = 100µH, I_AS = 2.4A, and V_DD = 50V - AOI2N60A maintains functionality after repeated UIS stress cycles.

Can AOI2N60A replace AOI2N60 in existing designs?

Yes, AOI2N60A is the halogen-free replacement for AOI2N60 and shares identical electrical specifications, pinout, and package dimensions. Both use TO-251AA and have matching R_DS(on), V_DSS, and Q_g. No layout or firmware changes are needed - AOI2N60A is a direct drop-in green alternative compliant with modern environmental regulations.

AOI2N60A Specifications

Product attributes: Attribute value

Manufacturer:: Alpha & Omega Semiconductor Inc.

Series:: -

Package/Case:: TO-251-3 Stub Leads, IPAK

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:: 2A (Tc)

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

Rds On (Max) @ Id, Vgs:: 4.7Ohm @ 1A, 10V

Vgs(th) (Max) @ Id:: 4.5V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 11 nC @ 10 V

Vgs (Max):: ±30V

Input Capacitance (Ciss) (Max) @ Vds:: 295 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 57W (Tc)

Operating Temperature:: -50°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-251A

AOI2N60A FAQ

1.How can I place an order for AOI2N60A through Aetrix?

Please submit a Request for Quotation (RFQ) for AOI2N60A 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 AOI2N60A reliable?

The price and inventory of AOI2N60A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOI2N60A is usually 5 days.

3.What payment methods are accepted for AOI2N60A?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOI2N60A transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AOI2N60A?

AOI2N60A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AOI2N60A 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 AOI2N60A?

For technical support, including AOI2N60A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOI2N60A requirements.

6.How does Aetrix verify that AOI2N60A is sourced from the original manufacturer or authorized distributors?

All AOI2N60A 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 AOI2N60A meets industry standards.

7.What is the process for return or replacement of AOI2N60A?

All AOI2N60A units undergo pre-shipment inspection (PSI). If there is an issue with AOI2N60A, 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 AOI2N60A part is unused and in its original packaging.

Return procedure for AOI2N60A:

1.Submit a request within 90 days.

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

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