FDPF7N50F N-Channel MOSFET 500V 6A Equivalent & Substitute Parts

Part Overview

The FDPF7N50F is an N-Channel MOSFET manufactured by onsemi, rated for 500V drain-to-source voltage and 6A continuous drain current in a Through Hole TO-220F-3 package. This device is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

The FDPF7N50F belongs to the UniFET™ series and is designed for high-voltage switching applications requiring robust thermal performance up to 38.5W power dissipation. Substitution is required due to product discontinuation while maintaining electrical and mechanical compatibility with existing designs.

Substiute Parts

FDPF7N50F

onsemiIn Stock: 6457FDPF7N50F Datasheet

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2SK2701A

Sanken Electric USA Inc.In Stock: 7552SK2701A Datasheet

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R5007FNX

Rohm SemiconductorIn Stock: 1211R5007FNX Datasheet

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TK7A55D(STA4,Q,M)

Toshiba Semiconductor and StorageIn Stock: 990TK7A55D(STA4,Q,M) Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the FDPF7N50F is determined by the following critical parameters:

Electrical Compatibility Criteria:

• Drain-to-Source Voltage (Vdss) must equal or exceed 500V
• Continuous Drain Current (Id) must equal or exceed 6A
• Gate drive voltage compatibility at 10V
• Maximum gate-source voltage (Vgs) of ±30V
• Operating temperature range supporting -55°C to 150°C

Mechanical Compatibility Criteria:

• Through Hole mounting type
• TO-220 package family (TO-220F-3, TO-220FM, TO-220SIS variants acceptable)
• Moisture Sensitivity Level 1 (Unlimited)

Substitute parts are grouped based on voltage rating and current capacity while maintaining package compatibility and thermal performance within the specified operating range.

Parameter Comparison

Engineering Selection Recommendations

2SK2701A (Sanken Electric USA Inc.)

The 2SK2701A operates at 450V Vdss, which is below the 500V rating of the FDPF7N50F. This part is suitable for applications where the maximum voltage stress does not exceed 450V. The device provides 7A continuous drain current, exceeding the 6A requirement. RoHS compliance status is confirmed. This substitute is appropriate for designs with voltage headroom below 500V.

R5007FNX (Rohm Semiconductor)

The R5007FNX matches the 500V Vdss rating of the FDPF7N50F and provides 7A continuous drain current. This part is ROHS3 compliant and carries Active product status, ensuring long-term availability. The device exhibits lower input capacitance (450 pF) and reduced gate charge (15 nC) compared to the main part, resulting in improved switching performance. Power dissipation is rated at 40W, exceeding the 38.5W specification of the FDPF7N50F.

TK7A55D(STA4,Q,M) (Toshiba Semiconductor and Storage)

The TK7A55D(STA4,Q,M) operates at 550V Vdss, providing additional voltage margin above the 500V requirement. The device delivers 7A continuous drain current and is ROHS3 compliant with Active product status. Gate charge (16 nC) and input capacitance (700 pF) are comparable to the main part. This substitute is suitable for applications requiring enhanced voltage headroom.

All three substitute parts maintain Through Hole mounting in TO-220 package variants, Moisture Sensitivity Level 1, and maximum gate-source voltage of ±30V, ensuring mechanical and electrical compatibility with the FDPF7N50F footprint and circuit requirements.

Frequently Asked Questions (FAQ)

Q: Can the 2SK2701A be used as a direct replacement for the FDPF7N50F?

A: The 2SK2701A is electrically compatible for applications operating below 450V. The reduced Vdss rating (450V vs. 500V) limits its use to circuits where maximum drain-source voltage does not exceed 450V. Both devices share identical TO-220-3 package specifications and gate drive requirements.

Q: What is the primary advantage of the R5007FNX over the FDPF7N50F?

A: The R5007FNX provides matched 500V Vdss rating with improved switching characteristics. Input capacitance is reduced to 450 pF (versus 960 pF), and gate charge is lowered to 15 nC (versus 20 nC), resulting in faster switching transitions and reduced drive circuit losses. The device is ROHS3 compliant with confirmed Active product status.

Q: Is the TK7A55D(STA4,Q,M) suitable for all FDPF7N50F applications?

A: Yes. The TK7A55D(STA4,Q,M) exceeds all electrical requirements of the FDPF7N50F with 550V Vdss, 7A continuous current, and compatible gate characteristics. The elevated voltage rating provides additional design margin. Package compatibility and thermal specifications are maintained.

Q: Are all substitute parts RoHS compliant?

A: The 2SK2701A is RoHS Compliant. The R5007FNX and TK7A55D(STA4,Q,M) are both ROHS3 Compliant. All three parts meet current environmental compliance requirements.

Q: Can these substitutes be used interchangeably in existing PCB designs?

A: All substitute parts use TO-220 package variants compatible with standard TO-220-3 footprints. Mechanical pin configuration and thermal interface remain consistent. Electrical parameter differences (Rds On, Ciss, Qg) may require circuit performance verification in applications with tight switching speed or efficiency requirements.

Q: What is the inventory status of substitute parts?

A: R5007FNX has 1176 pieces in stock. TK7A55D(STA4,Q,M) has 967 pieces in stock. 2SK2701A has 682 pieces in stock. All parts are listed as New Original In Stock.

Q: How do gate charge differences affect circuit design?

A: The FDPF7N50F specifies 20 nC gate charge at 10V. The R5007FNX (15 nC) and TK7A55D(STA4,Q,M) (16 nC) require less gate drive energy, reducing driver IC power dissipation and enabling faster switching. The 2SK2701A does not specify gate charge. Drive circuit compatibility remains maintained across all substitutes at 10V gate drive voltage.