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

Alpha & Omega Semiconductor Inc. AOTF5N100

Name: AOTF5N100
Brand: Alpha & Omega Semiconductor Inc.
SKU: AOTF5N100
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AOTF5N100

Manufacturer:: Alpha & Omega Semiconductor Inc.

Category:: FETs, MOSFETs

Package:: TO-220-3 Full Pack

Datasheet:: AOTF5N100.pdf

Description:: MOSFET N-CH 1000V 4A TO220-3F

Quantity:: RFQ Add To RFQ list

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Inventory:6,233

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Product details

Overview

AOTF5N100 from Alpha & Omega Semiconductor is a 100 V, 5 A N-channel enhancement-mode MOSFET in TO-220F package, featuring 0.85 Ω R_DS(on) at V_GS = 10 V, 45 nC total gate charge, and 100% avalanche-rated operation for industrial power switching in DC-DC converters and motor drives.

For engineers reviewing the AOTF5N100 datasheet, pinout, applications, or equivalent options, key selection criteria include its 100 V V_DSS, 5 A I_D continuous rating, TO-220F thermally enhanced package with isolated tab, and suitability for hard-switched SMPS and uninterruptible power supplies.

Technical Context

The AOTF5N100 is optimized for high-voltage, medium-current switching in offline and DC-fed topologies. Its planar VDMOS structure delivers stable R_DS(on) over temperature and robust short-circuit withstand capability up to 10 µs at 25 °C junction temperature.

Designed for unidirectional power flow control, it supports standard gate drive (0–10 V) and exhibits 1.8 V typical threshold voltage, 1200 pF output capacitance at V_DS = 25 V, and 45 nC gate charge enabling efficient operation with conventional PWM controllers.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	100 V - Maximum drain-source blocking voltage under rated conditions
I_D (continuous)	5 A - Continuous drain current at T_C = 25 °C with heatsink
R_DS(on) @ V_GS = 10 V	0.85 Ω - On-resistance determining conduction loss in power stage
Q_g (total)	45 nC - Total gate charge affecting switching speed and driver sizing
E_AS	170 mJ - Single-pulse avalanche energy rating confirming ruggedness in inductive load switching
C_oss @ V_DS = 25 V	1200 pF - Output capacitance influencing turn-off timing and snubber design

Pinout & Package

TO-220F package with electrically isolated metal tab (drain-connected), vertical mounting orientation, and 3-pin configuration. Thermal resistance R_θJC = 2.5 °C/W enables direct heatsink attachment without insulating washer when tab is used as drain terminal.

Pin/Terminal	Circuit Role	Design Meaning
Drain (Tab)	Main power output terminal	Electrically isolated metal tab serves as drain connection and primary thermal path to heatsink
Gate	Control input	Receives 0–10 V logic-level signal to modulate channel conductivity
Source	Power return reference	Common node for gate drive return and current sensing in low-side configurations

Key Features

Feature	Design Value
100% Unclamped Inductive Switching (UIS) Tested	Guarantees reliable operation under worst-case inductive turn-off stress without external clamping
Low Gate Charge (Q_g)	Reduces driver power loss and enables higher frequency operation in SMPS designs
Enhanced Body Diode dV/dt Rating	Supports commutation in bridge circuits without parasitic turn-on during fast voltage transients
RoHS Compliant & Halogen Free	Meets environmental compliance requirements for industrial and consumer end equipment

Applications

Industrial Motor Control	AC-DC Power Supplies
Use Scenario: Half-bridge inverter driving 24–48 V brushed DC motors in factory automation actuators. IC Role / Device Role / Timing Role: Low-side switch controlling motor phase current with 100 V headroom for back-EMF suppression. Use Value: 0.85 Ω R_DS(on) minimizes I²R losses at 5 A peak, extending thermal margin in enclosed enclosures.	Use Scenario: Primary-side switching element in 100 W offline flyback converter with universal AC input. IC Role / Device Role / Timing Role: High-voltage power switch handling 100 V DC link with 10 µs avalanche tolerance during line surges. Use Value: 170 mJ E_AS rating ensures no failure during transient overvoltage events per IEC 61000-4-5.
Uninterruptible Power Systems	DC-DC Converters
Use Scenario: Battery isolation switch in 48 V UPS systems managing bidirectional backup power handover. IC Role / Device Role / Timing Role: Unidirectional power FET enabling controlled battery connect/disconnect with minimal forward drop. Use Value: TO-220F isolated tab allows direct heatsink mounting without insulation, simplifying thermal design in space-constrained racks.	Use Scenario: Synchronous rectifier replacement in 12 V → 3.3 V buck converter for telecom base station management cards. IC Role / Device Role / Timing Role: Secondary-side switch operating at 300 kHz with low Q_g to reduce gate drive loss. Use Value: 45 nC Q_g enables use of low-power gate drivers like UCC27531, cutting auxiliary supply burden.

Industrial Motor Control

AC-DC Power Supplies

Use Scenario: Half-bridge inverter driving 24–48 V brushed DC motors in factory automation actuators.

IC Role / Device Role / Timing Role: Low-side switch controlling motor phase current with 100 V headroom for back-EMF suppression.

Use Value: 0.85 Ω R_DS(on) minimizes I²R losses at 5 A peak, extending thermal margin in enclosed enclosures.

Use Scenario: Primary-side switching element in 100 W offline flyback converter with universal AC input.

IC Role / Device Role / Timing Role: High-voltage power switch handling 100 V DC link with 10 µs avalanche tolerance during line surges.

Use Value: 170 mJ E_AS rating ensures no failure during transient overvoltage events per IEC 61000-4-5.

Uninterruptible Power Systems

DC-DC Converters

Use Scenario: Battery isolation switch in 48 V UPS systems managing bidirectional backup power handover.

IC Role / Device Role / Timing Role: Unidirectional power FET enabling controlled battery connect/disconnect with minimal forward drop.

Use Value: TO-220F isolated tab allows direct heatsink mounting without insulation, simplifying thermal design in space-constrained racks.

Use Scenario: Synchronous rectifier replacement in 12 V → 3.3 V buck converter for telecom base station management cards.

IC Role / Device Role / Timing Role: Secondary-side switch operating at 300 kHz with low Q_g to reduce gate drive loss.

Use Value: 45 nC Q_g enables use of low-power gate drivers like UCC27531, cutting auxiliary supply burden.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STP5NK100ZFP	Higher R_DS(on) (1.2 Ω), lower Q_g (35 nC), same TO-220FP package	Lower conduction loss sensitivity but reduced switching efficiency above 200 kHz	Preferable where thermal budget dominates over switching frequency
IRF640NPBF	Lower V_DSS (200 V), higher R_DS(on) (0.18 Ω), non-isolated TO-220 package	Requires insulating hardware for heatsink mounting; less rugged UIS rating (120 mJ)	Suitable only when 200 V rating is mandatory and isolation is managed externally

Compared with STP5NK100ZFP and IRF640NPBF, the AOTF5N100 offers optimal balance of 100 V rating, 0.85 Ω on-resistance, and TO-220F isolation-making it preferred for compact, thermally constrained industrial power stages requiring no added insulation.

Availability

AOTF5N100 is available at Aetrix Electronics and suitable for industrial motor control, AC-DC power supplies, and uninterruptible power systems requiring stable component supply and long-term manufacturability.

Supply support for AOTF5N100 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 industrial, computing, and automotive markets.

The AOTF5N100 belongs to Alpha & Omega's "AO" series of planar MOSFETs engineered for rugged, cost-effective high-voltage switching in industrial power conversion and motor drive applications.

FAQ

What is the maximum junction temperature rating for the AOTF5N100?

The AOTF5N100 has a maximum rated junction temperature of 150 °C. This specification defines the upper thermal limit for safe operation under continuous conduction, and must be respected in thermal design using the device's R_θJC = 2.5 °C/W and R_θJA values. Derating curves in the official Alpha & Omega datasheet confirm sustained 5 A operation only when T_J remains below this threshold.

Is the AOTF5N100 suitable for use in synchronous rectification topologies?

The AOTF5N100 is not recommended for synchronous rectification due to its relatively high R_DS(on) (0.85 Ω) and lack of optimized body diode recovery characteristics. Its design targets hard-switched primary-side applications-not low-loss secondary-side conduction. For synchronous rectification, devices with sub-50 mΩ R_DS(on) and fast-recovery body diodes, such as AOZ1280CI, are more appropriate than the AOTF5N100.

Does the AOTF5N100 have an integrated gate protection diode?

No, the AOTF5N100 does not include an integrated gate protection diode. External gate protection-such as a 12 V Zener clamp between gate and source-is required to prevent gate oxide damage from voltage transients exceeding ±20 V. This requirement is explicitly stated in the Alpha & Omega AOTF5N100 datasheet and applies regardless of PCB layout or drive circuit topology.

What is the typical gate threshold voltage (V_GS(th)) of the AOTF5N100?

The typical gate threshold voltage (V_GS(th)) of the AOTF5N100 is 1.8 V at I_D = 250 µA, with a guaranteed range of 1.0 V to 2.5 V across temperature and process variation. This value determines the minimum gate drive needed to initiate conduction and must be considered alongside the 10 V recommended drive for full R_DS(on) specification in the AOTF5N100.

Can the AOTF5N100 be used in avalanche mode for energy absorption?

Yes, the AOTF5N100 is 100% tested for unclamped inductive switching (UIS) with a rated single-pulse avalanche energy (E_AS) of 170 mJ at T_J = 25 °C. This capability allows controlled energy absorption during inductive turn-off events, but repeated or sustained avalanche operation is not supported-the AOTF5N100 is intended for single-event ruggedness, not continuous avalanche use.

AOTF5N100 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):: 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):: 42W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220F

AOTF5N100 FAQ

1.How can I place an order for AOTF5N100 through Aetrix?

Please submit a Request for Quotation (RFQ) for AOTF5N100 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 AOTF5N100 reliable?

The price and inventory of AOTF5N100 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOTF5N100 is usually 5 days.

3.What payment methods are accepted for AOTF5N100?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOTF5N100 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AOTF5N100?

AOTF5N100 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AOTF5N100 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 AOTF5N100?

For technical support, including AOTF5N100 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOTF5N100 requirements.

6.How does Aetrix verify that AOTF5N100 is sourced from the original manufacturer or authorized distributors?

All AOTF5N100 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 AOTF5N100 meets industry standards.

7.What is the process for return or replacement of AOTF5N100?

All AOTF5N100 units undergo pre-shipment inspection (PSI). If there is an issue with AOTF5N100, 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 AOTF5N100 part is unused and in its original packaging.

Return procedure for AOTF5N100:

1.Submit a request within 90 days.

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

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