STL7DN6LF3 Equivalent & Substitute Parts

Part Overview

The STL7DN6LF3 is a dual N-channel MOSFET manufactured by STMicroelectronics in the STripFET™ III series. This surface mount device features a 60V drain-to-source voltage rating, 20A continuous drain current, and 52W maximum power dissipation in a PowerFlat™ (5x6) package. The part is classified as Active product status with AEC-Q101 automotive qualification and ROHS3 compliance.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility exist within the same voltage and configuration class. The parts listed below share the same drain-to-source voltage rating (60V), dual N-channel configuration, logic level gate feature, and automotive-grade qualification, enabling functional substitution in applications where current and power requirements align.

Substiute Parts

STL7DN6LF3

STMicroelectronicsIn Stock: 8152STL7DN6LF3 Datasheet

Current PartRFQ

NVMFD5483NLT1G

onsemiIn Stock: 1226NVMFD5483NLT1G Datasheet

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NVMFD5483NLWFT3G

onsemiIn Stock: 923NVMFD5483NLWFT3G Datasheet

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NVMFD5485NLWFT1G

onsemiIn Stock: 18781NVMFD5485NLWFT1G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the STL7DN6LF3 is determined by the following critical parameters:

Mandatory Matching Criteria:

• Drain to Source Voltage (Vdss): 60V
• Configuration: 2 N-Channel (Dual)
• FET Feature: Logic Level Gate
• Grade: Automotive
• Qualification: AEC-Q101
• Mounting Type: Surface Mount
• Operating Temperature Range: -55°C to 175°C

Performance Consideration Parameters:

• Current - Continuous Drain (Id) @ 25°C
• Rds On (Max) @ Id, Vgs
• Power - Max
• Gate Charge (Qg) (Max) @ Vgs
• Input Capacitance (Ciss) (Max) @ Vds

The substitute parts identified (NVMFD5483NLT1G, NVMFD5483NLWFT3G, and NVMFD5485NLWFT1G) meet all mandatory matching criteria. However, these onsemi parts exhibit reduced current ratings (5.3A to 6.4A versus 20A) and lower maximum power dissipation (2.9W to 3.1W versus 52W). Substitution is valid only in applications where the lower current and power specifications are acceptable for the circuit design.

Parameter Comparison

Engineering Selection Recommendations

STL7DN6LF3 (Primary Selection)

The STL7DN6LF3 maintains Active product status with full availability and represents the preferred selection for new designs. This part delivers the highest current capacity (20A) and power dissipation (52W) within the dual N-channel 60V MOSFET class. The part is AEC-Q101 qualified, ROHS3 compliant, and carries unlimited moisture sensitivity rating (MSL 1), supporting deployment in automotive and industrial applications without supply chain constraints.

NVMFD5483NLT1G and NVMFD5483NLWFT3G (Obsolete Status)

Both onsemi parts share identical electrical specifications with 6.4A continuous drain current and 3.1W maximum power dissipation. These parts carry Obsolete product status, indicating discontinued manufacturing and limited inventory availability. Substitution is restricted to legacy system maintenance or applications where current requirements do not exceed 6.4A. The higher gate charge (23.4nC versus 8.8nC) and input capacitance (668pF versus 432pF) may impact switching performance in high-frequency circuits.

NVMFD5485NLWFT1G (Obsolete Status)

This onsemi part provides 5.3A continuous drain current and 2.9W maximum power dissipation with Obsolete product status. The gate charge specification (20nC) and input capacitance (560pF) position this part between the NVMFD5483 variants and the STL7DN6LF3. Substitution applies only to applications with current requirements below 5.3A and where inventory availability from legacy stock is acceptable.

Compliance and Qualification

All identified parts maintain AEC-Q101 automotive qualification, ROHS3 compliance, and MSL 1 rating. Package differences exist between the main part (8-PowerVDFN) and substitute parts (8-PowerTDFN), requiring PCB layout verification for mechanical fit and thermal performance.

Frequently Asked Questions (FAQ)

Q: Can NVMFD5483NLT1G replace STL7DN6LF3 in all applications?

A: Substitution is valid only in applications where the circuit design operates at or below 6.4A continuous drain current. The STL7DN6LF3 supports 20A, providing significantly higher current capacity. If the application requires the full 20A rating, the onsemi part is not suitable. Additionally, the onsemi part carries Obsolete status, limiting long-term availability.

Q: What are the package differences between these parts?

A: The STL7DN6LF3 uses 8-PowerVDFN packaging, while the onsemi substitutes (NVMFD5483NLT1G, NVMFD5483NLWFT3G, NVMFD5485NLWFT1G) use 8-PowerTDFN packaging. Both are 8-pin surface mount packages with 5x6mm footprints, but internal construction and thermal characteristics differ. PCB layout and thermal management strategies may require adjustment when switching between these package types.

Q: Are all parts automotive-qualified?

A: Yes. The STL7DN6LF3 and all three onsemi substitutes carry AEC-Q101 automotive qualification and Automotive grade designation. All parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, supporting deployment in automotive and industrial environments.

Q: Why do the onsemi parts have higher gate charge values?

A: Gate charge (Qg) is measured at 10V gate-source voltage. The onsemi parts exhibit 23.4nC (NVMFD5483 variants) and 20nC (NVMFD5485NLWFT1G) compared to 8.8nC for the STL7DN6LF3. Higher gate charge increases switching time and driver power consumption. In high-frequency switching applications, this difference may impact circuit efficiency and thermal performance.

Q: What is the significance of Obsolete product status for the onsemi parts?

A: Obsolete status indicates that the manufacturer has discontinued production. While current inventory may be available from distributors, long-term supply cannot be guaranteed. For new designs or production runs requiring multi-year component availability, the Active-status STL7DN6LF3 is the appropriate selection.

Q: Can I use NVMFD5485NLWFT1G instead of NVMFD5483NLT1G?

A: Both parts share the same 60V voltage rating, dual N-channel configuration, logic level gate feature, and automotive qualification. The NVMFD5485NLWFT1G provides slightly lower current (5.3A versus 6.4A) and power dissipation (2.9W versus 3.1W). Substitution is valid if the application current requirement does not exceed 5.3A. The NVMFD5485NLWFT1G exhibits lower gate charge (20nC versus 23.4nC) and input capacitance (560pF versus 668pF), potentially offering improved switching performance in high-frequency circuits.

Q: Are there thermal management differences between these parts?

A: The STL7DN6LF3 supports 52W maximum power dissipation, while the onsemi substitutes support 2.9W to 3.1W. This significant difference reflects different thermal design margins and package thermal resistance characteristics. Applications requiring sustained power dissipation above 3.1W must use the STL7DN6LF3 or implement external thermal management solutions with the onsemi parts.

Q: What compliance certifications apply to all parts?

A: All parts are ROHS3 compliant, carry AEC-Q101 automotive qualification, and maintain MSL 1 (Unlimited) moisture sensitivity rating. REACH status is Unaffected for all parts. ECCN classification is EAR99 and HTSUS code is 8541.29.0095 for all parts.