APT8020LFLLG N-Channel 800V 38A MOSFET Equivalent & Substitute Parts

Part Overview

The APT8020LFLLG is an N-Channel MOSFET manufactured by Microchip Technology, rated for 800V drain-to-source voltage with 38A continuous drain current at 25°C. This device is part of the POWER MOS 7® series and is housed in a TO-264 [L] through-hole package. The part is currently active in production with 673 units in stock.

Equivalent and substitute parts are identified when alternative components share the same critical electrical specifications (Vdss, Id, Vgs ratings, and package compatibility) while maintaining compliance with applicable standards. Substitutes enable design flexibility, support supply chain continuity, and provide options for performance optimization within the same application class.

Substiute Parts

APT8020LFLLG

Microchip TechnologyIn Stock: 754APT8020LFLLG Datasheet

Current PartRFQ

IXFK32N80Q3

IXYSIn Stock: 1598IXFK32N80Q3 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the APT8020LFLLG is determined by the following critical parameters:

Electrical Compatibility Criteria:

• Drain-to-Source Voltage (Vdss): Must equal or exceed 800V
• Continuous Drain Current (Id): Must support 38A or higher at 25°C
• Gate-Source Voltage (Vgs): Must accommodate ±30V maximum rating
• Drive Voltage: Must operate at 10V gate drive
• Package Type: Must be TO-264 or TO-264AA (mechanically and electrically compatible through-hole packages)

Compliance Requirements:

• RoHS3 compliance mandatory
• REACH unaffected status required
• Moisture Sensitivity Level (MSL) 1 or equivalent

The IXFK32N80Q3 qualifies as a substitute based on matching Vdss (800V), compatible package (TO-264AA), equivalent operating temperature range (-55°C to 150°C), and identical compliance certifications. While the continuous drain current is rated at 32A (lower than the 38A of the main part), this device operates within the same voltage class and package family, making it suitable for applications where the 32A rating is acceptable.

Parameter Comparison

Engineering Selection Recommendations

APT8020LFLLG Selection: Choose the APT8020LFLLG when the application requires the full 38A continuous drain current rating. This part is actively produced by Microchip Technology with 673 units currently in stock. The device meets ROHS3 compliance and REACH unaffected status. The lower on-resistance (220 mOhm @ 19A, 10V) and lower input capacitance (5200 pF @ 25V) provide advantages in high-frequency switching applications and reduced gate drive power requirements.

IXFK32N80Q3 Selection: The IXFK32N80Q3 is suitable for applications where the 32A continuous drain current rating is sufficient. This IXYS HiPerFET™ Q3 Class device offers higher power dissipation capability (1000W vs. 694W) and lower gate charge (140 nC vs. 195 nC), which may benefit thermal management and switching speed in specific circuit topologies. The part is actively produced with 1549 units in stock. Both devices share identical voltage ratings, temperature range, and compliance certifications.

Package Compatibility: Both parts use mechanically and electrically compatible through-hole packages (TO-264 [L] and TO-264AA). PCB layout modifications are not required for substitution.

Frequently Asked Questions (FAQ)

Q: Can the IXFK32N80Q3 directly replace the APT8020LFLLG in all applications?

A: Direct substitution is valid only when the application current requirement does not exceed 32A continuous drain current. The IXFK32N80Q3 is rated for 32A (Tc) versus the APT8020LFLLG's 38A (Tc). Both devices share the same 800V Vdss rating, ±30V Vgs maximum, and 10V drive voltage. Verify that your circuit design operates within the 32A limit before substitution.

Q: Are the TO-264 [L] and TO-264AA packages mechanically interchangeable?

A: Yes. Both packages are through-hole TO-264 variants with identical pin configurations and PCB footprints. No layout modifications are required for substitution between these package types.

Q: What are the compliance implications of substituting these parts?

A: Both the APT8020LFLLG and IXFK32N80Q3 are ROHS3 compliant and REACH unaffected. Substitution does not introduce compliance risk. Both devices have Moisture Sensitivity Level (MSL) 1, indicating unlimited shelf life under standard storage conditions.

Q: How do the on-resistance specifications compare?

A: The APT8020LFLLG specifies 220 mOhm maximum on-resistance at 19A and 10V gate drive. The IXFK32N80Q3 specifies 270 mOhm maximum at 16A and 10V gate drive. The APT8020LFLLG exhibits lower on-resistance, resulting in reduced conduction losses. Applications sensitive to power dissipation should account for this difference.

Q: What is the significance of gate charge differences between these parts?

A: The APT8020LFLLG requires 195 nC gate charge at 10V, while the IXFK32N80Q3 requires 140 nC. Lower gate charge reduces gate drive power and enables faster switching transitions. The IXFK32N80Q3's lower gate charge may provide switching speed advantages in high-frequency applications.

Q: Are there thermal performance differences?

A: The IXFK32N80Q3 is rated for 1000W maximum power dissipation (Tc) compared to the APT8020LFLLG's 694W. The higher power dissipation rating of the IXFK32N80Q3 indicates superior thermal performance. However, actual thermal performance depends on circuit design, heat sinking, and operating conditions.

Q: Can I use the IXFK32N80Q3 in a circuit designed for 38A operation?

A: No. The IXFK32N80Q3 is rated for 32A continuous drain current. Using it in a circuit requiring 38A operation exceeds the device's electrical rating and may result in thermal runaway or device failure. Use only when your application current requirement is 32A or lower.