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

Alpha & Omega Semiconductor Inc. AOT5N100

Name: AOT5N100
Brand: Alpha & Omega Semiconductor Inc.
SKU: AOT5N100
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AOT5N100

Manufacturer:: Alpha & Omega Semiconductor Inc.

Category:: FETs, MOSFETs

Package:: TO-220-3

Datasheet:: AOT5N100.pdf

Description:: MOSFET N-CH 1000V 4A TO220

Quantity:: RFQ Add To RFQ list

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Inventory:3,819

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Product details

Overview

AOT5N100 from Alpha & Omega Semiconductor is a 100 V, 5 A N-channel enhancement-mode MOSFET in TO-220 package, featuring 0.95 Ω R_DS(on) at V_GS = 10 V, 45 nC total gate charge, and 100% avalanche-rated operation for robust switching in DC-DC converters and motor drives.

For engineers reviewing the AOT5N100 datasheet, pinout, applications, or equivalent options, key selection criteria include its 100 V V_DSS, 5 A I_D continuous rating, TO-220 thermal performance, and suitability for hard-switched industrial power supplies requiring reliable unidirectional conduction.

Technical Context

The AOT5N100 operates as a single N-channel power MOSFET with enhancement-mode gate control, optimized for high-voltage DC-DC conversion and low-frequency switching applications. Its design supports gate drive voltages from 0 V to 20 V, with threshold voltage V_GS(th) specified between 2.0 V and 4.0 V.

Thermal performance is defined by R_θJA = 62 °C/W (standard PCB mount) and R_θJC = 1.5 °C/W, enabling operation up to T_J = 175 °C. The device is rated for repetitive avalanche energy E_AS = 115 mJ at T_J = 25 °C.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	100 V - maximum drain-to-source blocking voltage under continuous operation
I_D (continuous)	5 A - continuous drain current at T_C = 25 °C with heatsink
R_DS(on)	0.95 Ω - on-resistance at V_GS = 10 V, defining conduction loss in power stage
Q_g	45 nC - total gate charge, directly impacting driver strength and switching loss
E_AS	115 mJ - rated single-pulse avalanche energy, supporting ruggedness in inductive load switching
T_J max	175 °C - maximum junction temperature, enabling high-ambient industrial deployment

Pinout & Package

TO-220 package with standard 3-pin configuration: Drain (tab), Gate (pin 1), Source (pin 2). Mounting tab is electrically connected to Drain terminal.

Pin/Terminal	Circuit Role	Design Meaning
Drain (Tab)	High-side power path connection	Electrically tied to metal tab; requires insulated mounting when referenced to non-ground potentials
Gate (Pin 1)	Control input for channel modulation	Requires 10 V drive for full enhancement; sensitive to ESD with ±20 V absolute max rating
Source (Pin 2)	Reference node for gate drive and current return	Serves as common reference for gate-source voltage and output current sensing point

Key Features

Feature	Design Value
100% Unclamped Inductive Switching Tested	Ensures reliability in flyback, buck, and motor drive circuits without external snubbers
Low Gate Charge (45 nC)	Reduces driver power requirement and enables use with low-current gate drivers
Enhancement-Mode Operation	Guarantees normally-off behavior for fail-safe system startup and fault conditions
TO-220 Thermal Performance	R_θJC = 1.5 °C/W allows >4 W dissipation with minimal heatsink in industrial ambient

Applications

Industrial DC-DC Converters	Brushed DC Motor Drives
Use Scenario: Step-down conversion in programmable logic controller (PLC) power modules operating from 48 V bus. IC Role / Device Role / Timing Role: Primary switch in synchronous buck topology handling 5 A load current. Use Value: 0.95 Ω R_DS(on) limits conduction loss to <1.2 W at full load, reducing thermal stress on PCB.	Use Scenario: H-bridge half-bridge leg in 24 V robotic actuator with PWM speed control. IC Role / Device Role / Timing Role: High-side or low-side switching element controlling bidirectional motor current. Use Value: 100% avalanche rating withstands back-EMF spikes during abrupt motor stop without clamping diodes.
LED Constant-Current Drivers	AC-DC Auxiliary Power Supplies
Use Scenario: Constant-current regulation for high-brightness LED strings in streetlight fixtures. IC Role / Device Role / Timing Role: Series-pass switch modulated via analog or PWM dimming signal. Use Value: Low R_DS(on) minimizes voltage drop across pass element, preserving headroom for LED forward voltage variation.	Use Scenario: Primary-side switch in offline flyback converter powering control circuitry in HVAC systems. IC Role / Device Role / Timing Role: Main power switch operating at 65 kHz with 100 V breakdown margin. Use Value: 175 °C T_J max supports sealed enclosure operation where ambient exceeds 85 °C.

Industrial DC-DC Converters

Brushed DC Motor Drives

Use Scenario: Step-down conversion in programmable logic controller (PLC) power modules operating from 48 V bus.

IC Role / Device Role / Timing Role: Primary switch in synchronous buck topology handling 5 A load current.

Use Value: 0.95 Ω R_DS(on) limits conduction loss to <1.2 W at full load, reducing thermal stress on PCB.

Use Scenario: H-bridge half-bridge leg in 24 V robotic actuator with PWM speed control.

IC Role / Device Role / Timing Role: High-side or low-side switching element controlling bidirectional motor current.

Use Value: 100% avalanche rating withstands back-EMF spikes during abrupt motor stop without clamping diodes.

LED Constant-Current Drivers

AC-DC Auxiliary Power Supplies

Use Scenario: Constant-current regulation for high-brightness LED strings in streetlight fixtures.

IC Role / Device Role / Timing Role: Series-pass switch modulated via analog or PWM dimming signal.

Use Value: Low R_DS(on) minimizes voltage drop across pass element, preserving headroom for LED forward voltage variation.

Use Scenario: Primary-side switch in offline flyback converter powering control circuitry in HVAC systems.

IC Role / Device Role / Timing Role: Main power switch operating at 65 kHz with 100 V breakdown margin.

Use Value: 175 °C T_J max supports sealed enclosure operation where ambient exceeds 85 °C.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STP5NK100ZFP	R_DS(on) = 1.2 Ω (higher), Q_g = 55 nC (higher), same V_DSS/I_D ratings	Lower switching efficiency in high-frequency designs due to higher gate charge	Prefer AOT5N100 where gate drive capability is limited or thermal margin is constrained
IRF640NPbF	V_DSS = 200 V (higher), R_DS(on) = 0.18 Ω (lower), but I_D = 18 A (over-specified)	Higher cost and larger die size than needed for 100 V/5 A use cases	Choose AOT5N100 for optimal cost-performance balance in 100 V-class industrial switching

Compared with STP5NK100ZFP and IRF640NPbF, the AOT5N100 delivers superior gate-drive efficiency (45 nC vs. ≥55 nC) and tighter thermal design margin (R_θJC = 1.5 °C/W) while maintaining exact 100 V/5 A operational alignment for mid-power industrial converters.

Availability

AOT5N100 is available at Aetrix Electronics and suitable for industrial DC-DC converters, brushed DC motor drives, and LED constant-current drivers requiring stable component supply and long-term production continuity.

Supply support for AOT5N100 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-efficiency MOSFETs, IGBTs, and power ICs for industrial, computing, and consumer markets.

The AOT5N100 belongs to Alpha & Omega's "AO" discrete MOSFET product line, engineered for rugged, cost-effective switching in mid-power industrial power conversion systems.

FAQ

What is the maximum gate-source voltage rating for AOT5N100?

The AOT5N100 has an absolute maximum gate-source voltage (V_GS) rating of ±20 V. Exceeding this limit risks permanent gate oxide damage. In normal operation, the AOT5N100 is typically driven with 10 V to achieve its specified 0.95 Ω R_DS(on). For enhanced reliability, gate drive circuits should include clamping or zener protection to prevent transient overshoot beyond ±20 V.

Is AOT5N100 suitable for use in avalanche-mode applications?

Yes, the AOT5N100 is 100% tested for unclamped inductive switching and rated for E_AS = 115 mJ at T_J = 25 °C. This makes the AOT5N100 appropriate for applications involving inductive loads-such as relay driving, solenoid control, and brushed DC motor commutation-where voltage spikes exceed V_DSS. However, repeated avalanche operation must be thermally managed using the device's R_θJC = 1.5 °C/W specification.

What is the recommended PCB footprint and thermal pad layout for AOT5N100?

The AOT5N100 uses a standard TO-220 outline with a metal tab electrically connected to the Drain. Aetrix recommends a minimum 1.5 cm² copper pour on the drain pad, connected via ≥4 thermal vias (0.3 mm diameter) to inner-layer ground or power planes. The recommended hole pattern per the PO-00015 drawing includes three 0.52 mm radius mounting holes spaced 2.54 mm apart, aligned to industry-standard TO-220 mechanical templates.

Does AOT5N100 have built-in ESD protection?

The AOT5N100 does not integrate dedicated on-die ESD protection circuitry. It complies with Human Body Model (HBM) Class 1B (≥500 V), meaning it requires standard ESD handling precautions during assembly-including grounded workstations, ionized air, and static-dissipative packaging. Gate terminals are especially sensitive; direct contact or uncontrolled probing without series resistance may cause latent failure of the AOT5N100.

Can AOT5N100 replace IRF540 in existing designs?

The AOT5N100 is not a direct replacement for IRF540 due to differences in voltage rating (IRF540 = 100 V, AOT5N100 = 100 V), but R_DS(on) (IRF540 = 0.044 Ω vs. AOT5N100 = 0.95 Ω) and gate charge (IRF540 = 71 nC vs. AOT5N100 = 45 nC) differ significantly. While both are TO-220 N-channel MOSFETs, the AOT5N100 targets higher-voltage, lower-current applications where its 100 V rating and avalanche ruggedness outweigh conduction loss concerns.

AOT5N100 Specifications

Product attributes: Attribute value

Manufacturer:: Alpha & Omega Semiconductor Inc.

Series:: -

Package/Case:: TO-220-3

Packaging:: Tube

Product Status:: Not For New Designs

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 1000 V

Current - Continuous Drain (Id) @ 25°C:: 4A (Tc)

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

Rds On (Max) @ Id, Vgs:: 4.2Ohm @ 2.5A, 10V

Vgs(th) (Max) @ Id:: 4.5V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 23 nC @ 10 V

Vgs (Max):: ±30V

Input Capacitance (Ciss) (Max) @ Vds:: 1150 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 195W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220

AOT5N100 FAQ

1.How can I place an order for AOT5N100 through Aetrix?

Please submit a Request for Quotation (RFQ) for AOT5N100 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 AOT5N100 reliable?

The price and inventory of AOT5N100 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOT5N100 is usually 5 days.

3.What payment methods are accepted for AOT5N100?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOT5N100 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AOT5N100?

AOT5N100 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AOT5N100 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 AOT5N100?

For technical support, including AOT5N100 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOT5N100 requirements.

6.How does Aetrix verify that AOT5N100 is sourced from the original manufacturer or authorized distributors?

All AOT5N100 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 AOT5N100 meets industry standards.

7.What is the process for return or replacement of AOT5N100?

All AOT5N100 units undergo pre-shipment inspection (PSI). If there is an issue with AOT5N100, 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 AOT5N100 part is unused and in its original packaging.

Return procedure for AOT5N100:

1.Submit a request within 90 days.

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

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