Manufacturer Part Number

AOTF10N50FD

Description

This part is an N-channel MOSFET made by Alpha & Omega Semiconductor Inc. It supports a drain-to-source voltage of 500V and a continuous drain current of 10A. Power dissipation can reach up to 50W. The device is provided in a TO-220F package for through-hole mounting. The MOSFET is now obsolete, but new original stock is still available. RoHS3 compliant and REACH unaffected, suitable for applications needing moderate to high voltage and current switching.

Specifications

N-channel MOSFET

Vdss: 500V

Id (continuous): 10A at 25°C (Tc)

Rds(on): 750mΩ max at 5A, 10V

Vgs(th): 4.2V max at 250µA

Vgs(max): ±30V

Qg: 35 nC max at Vgs = 10V

Ciss: 1240pF max at Vds = 25V

Power dissipation: 50W (Tc)

Package: TO-220F (Full Pack), through-hole

Operating temperature: -55°C to 150°C (TJ)

Moisture Sensitivity Level: 1 (unlimited)

RoHS3 compliant, REACH unaffected

Device Structure

The chip structure uses a metal oxide semiconductor field-effect transistor (MOSFET) process. N-channel type with a single transistor in a TO-220F package. It has three leads: gate, drain, and source. The full pack (TO-220F) includes an insulated tab for improved heat dissipation and electrical isolation. The structure favors high voltage blocking and moderate current handling.

Performance Characteristics

Withstands up to 500V across drain-source

Handles continuous current up to 10A at case temperature

Low on-resistance (750mΩ), enables reduced conduction losses

Fast switching with moderate gate charge (35 nC)

Suitable for hard-switching applications

Insulated package helps reduce risk of shorts to heatsink

Wide temperature range suitable for industrial environments

Application Environments

Power supply circuits (switching, rectifier, inverter)

LED drivers

Motor drivers and relay replacements

High voltage DC/DC converters

Uninterruptible power supplies (UPS)

Industrial and consumer-grade electronic equipment

Not suited for logic-level drive, needs higher gate voltage (10V)

Selection Guidelines

Check required drain-to-source voltage (500V max, must not be exceeded). Verify continuous drain current needs (must be ≤10A at cooling conditions). Ensure drive voltage available at gate is at least 10V for minimum on-resistance. Rds(on) of 750mΩ can be considered moderate; compare to application requirements for efficiency. Assess thermal management: TO-220F package helps, but additional heatsinking may be needed. If higher efficiency or lower Rds(on) is required, consider newer alternatives.

Usage Considerations

Obsolete part; ensure inventory availability before design-in. Require 10V gate drive for lowest Rds(on); not suitable for low-voltage direct logic drive. Provide adequate heatsinking for 50W dissipation. Observe ESD protection practices. Respect ±30V max Vgs rating to prevent gate damage. Use in through-hole PCBs with matching footprint.

Potential Equivalent/Replacement Models

There are alternative and equivalent models available, including:

ZDX080N50

R5009ANX

STP9NK50ZFP

TK11A55D (STA4,Q,M)

TK8A50D (STA4,Q,M)

For more replacements or detailed cross-reference help, contact the Ariat-Tech sales team for tailored advice.

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