STFI8N80K5 N-Channel MOSFET 800V 6A Equivalent & Substitute Parts

Part Overview

The STFI8N80K5 is an N-Channel MOSFET manufactured by STMicroelectronics, part of the SuperMESH5™ series. This device is rated for 800V drain-to-source voltage with 6A continuous drain current and 25W maximum power dissipation in a Through Hole TO-281 (I2PAKFP) package. The STFI8N80K5 is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support, maintenance, and production continuity. Substitute parts must maintain electrical equivalence across critical parameters including voltage rating, current capacity, on-resistance characteristics, and thermal specifications while accommodating package and mounting differences.

Substiute Parts

STFI8N80K5

STMicroelectronicsIn Stock: 2522STFI8N80K5 Datasheet

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STF8N80K5

STMicroelectronicsIn Stock: 1614STF8N80K5 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the STFI8N80K5 is determined by strict equivalence across electrical performance parameters and compliance certifications. The primary substitute identified is the STF8N80K5, which maintains identical electrical specifications including 800V Vdss rating, 6A continuous drain current, 950mOhm on-resistance at specified conditions, and matching gate charge and capacitance characteristics. Both devices operate across the same temperature range (-55°C to 150°C) and comply with ROHS3 and REACH requirements.

The critical substitution criterion is preservation of the following parameters:

• Drain to Source Voltage (Vdss): 800V
• Continuous Drain Current (Id): 6A at 25°C
• On-Resistance (Rds On): 950mOhm maximum at 3A, 10V gate drive
• Gate Threshold Voltage: 5V maximum at 100µA
• Gate Charge: 16.5nC maximum at 10V
• Input Capacitance: 450pF maximum at 100V
• Power Dissipation: 25W maximum
• Operating Temperature: -55°C to 150°C

The primary difference between the main part and its substitute is the package configuration: the STFI8N80K5 uses TO-281 (I2PAKFP) packaging, while the STF8N80K5 uses TO-220FP packaging. Both are Through Hole mounting types suitable for PCB integration with appropriate footprint adaptation.

Parameter Comparison

Engineering Selection Recommendations

The STF8N80K5 is the direct electrical equivalent to the obsolete STFI8N80K5. Both devices are manufactured by STMicroelectronics within the SuperMESH5™ series and maintain identical electrical performance across all specified parameters. The STF8N80K5 holds Active product status, ensuring ongoing availability and manufacturing support, whereas the STFI8N80K5 is classified as Obsolete.

Selection of the STF8N80K5 as a substitute requires PCB footprint modification to accommodate the TO-220FP package in place of the original TO-281 (I2PAKFP) package. Both packages are Through Hole configurations with compatible lead spacing for standard PCB mounting. The thermal and electrical performance remain equivalent across both package types.

Both parts comply with ROHS3 and REACH regulatory requirements, ensuring compatibility with current environmental and compliance standards. The STF8N80K5 carries Moisture Sensitivity Level (MSL) 1 (Unlimited), indicating no moisture sensitivity constraints during storage and handling.

Frequently Asked Questions (FAQ)

Q: Can the STF8N80K5 directly replace the STFI8N80K5 without circuit modification?

A: The STF8N80K5 is electrically equivalent to the STFI8N80K5 across all specified parameters. However, the package change from TO-281 (I2PAKFP) to TO-220FP requires PCB footprint modification. No circuit-level changes are necessary if the PCB layout is updated to accommodate the different package pinout and lead configuration.

Q: What are the key electrical parameters that define substitution eligibility?

A: Substitution eligibility is determined by equivalence in Drain to Source Voltage (800V), Continuous Drain Current (6A), On-Resistance (950mOhm at 3A, 10V), Gate Threshold Voltage (5V at 100µA), Gate Charge (16.5nC at 10V), Input Capacitance (450pF at 100V), and Operating Temperature Range (-55°C to 150°C). All these parameters must match or exceed the original specification.

Q: Why is the STFI8N80K5 classified as Obsolete?

A: The STFI8N80K5 is classified as Obsolete by STMicroelectronics, indicating that the manufacturer has discontinued production and support for this specific part number. The STF8N80K5 represents the active production equivalent within the same SuperMESH5™ series.

Q: Are there thermal performance differences between the TO-281 and TO-220FP packages?

A: Both packages are rated for 25W maximum power dissipation at the case temperature (Tc). Thermal performance depends on PCB layout, heatsinking, and mounting configuration. The electrical specifications remain identical between packages.

Q: What compliance certifications apply to both parts?

A: Both the STFI8N80K5 and STF8N80K5 comply with ROHS3 and REACH requirements. The STF8N80K5 carries Moisture Sensitivity Level (MSL) 1 (Unlimited), indicating no moisture sensitivity constraints. Both parts are classified under ECCN EAR99 and HTSUS 8541.29.0095.

Q: Can the STF8N80K5 be used in high-temperature applications?

A: Both devices operate across the temperature range -55°C to 150°C (TJ). The STF8N80K5 is suitable for applications within this specified range. Thermal management and heatsinking requirements depend on the specific application power dissipation profile.

Q: What is the lead configuration difference between TO-281 and TO-220FP packages?

A: Both packages are Through Hole configurations with three leads. The TO-281 (I2PAKFP) and TO-220FP packages have different physical dimensions and lead spacing. PCB footprint design must be updated to match the specific package pinout and lead positions of the TO-220FP package.