FDPF16N50UT N-Channel 500V 15A MOSFET Equivalent & Substitute Parts

Part Overview

The FDPF16N50UT is an N-Channel MOSFET manufactured by onsemi, rated for 500V drain-to-source voltage with 15A continuous drain current at 25°C. This device is housed in a TO-220F-3 through-hole package and is part of the UltraFRFET™ and Unifet™ series. The part is currently classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design support and procurement requirements.

Substiute Parts

FDPF16N50UT

onsemiIn Stock: 15273FDPF16N50UT Datasheet

Current PartRFQ

FDPF16N50UT

Fairchild SemiconductorIn Stock: 15192FDPF16N50UT Datasheet

Parametric EquivalentRFQ

R5011FNX

Rohm SemiconductorIn Stock: 10320R5011FNX Datasheet

SimilarRFQ

STF13NK50Z

STMicroelectronicsIn Stock: 20293STF13NK50Z Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FDPF16N50UT is determined by the following critical parameters:

Primary Matching Criteria:

• Drain to Source Voltage (Vdss): 500V minimum
• FET Type: N-Channel
• Technology: MOSFET (Metal Oxide)
• Package Type: TO-220-3 through-hole configuration
• Operating Temperature Range: -55°C to 150°C (TJ)

Secondary Compatibility Factors:

• Continuous Drain Current (Id): 15A or greater at 25°C
• Rds On (Max): 480mOhm or lower at specified conditions
• Gate Threshold Voltage: Compatible with 10V drive voltage
• Gate Charge: Acceptable switching characteristics
• Input Capacitance: Suitable for circuit timing requirements

Substitute parts are classified into two categories: parametric equivalents (matching all primary criteria) and similar parts (meeting voltage and package requirements with reduced current ratings or modified electrical characteristics).

Parameter Comparison

Engineering Selection Recommendations

Parametric Equivalent:

The FDPF16N50UT manufactured by Fairchild Semiconductor is a direct parametric equivalent to the onsemi FDPF16N50UT. This part maintains identical electrical specifications including 500V Vdss, 15A continuous drain current, 480mOhm Rds On, and 38.5W power dissipation. The Fairchild variant is classified as Active product status, providing long-term availability and supply chain continuity. Both parts are ROHS3 compliant and housed in TO-220-3 through-hole packages. This substitute is suitable for direct replacement in existing designs without circuit modification.

Similar Alternatives:

The STF13NK50Z from STMicroelectronics is an active product offering 500V Vdss with 11A continuous drain current. This part features identical Rds On performance (480mOhm @ 6.5A, 10V) and operates across the same temperature range (-55°C to 150°C). The STF13NK50Z is part of the SuperMESH™ series and carries ROHS3 compliance. The reduced current rating (11A versus 15A) and lower power dissipation (30W versus 38.5W) position this part for applications with lower current demands or improved thermal performance requirements.

The R5011FNX from Rohm Semiconductor provides 500V Vdss with reduced continuous drain current specifications (11A Ta, 5.4A Tc). This part is classified as Not For New Designs and carries a higher Rds On value (520mOhm @ 5.5A, 10V). The R5011FNX is suitable only for legacy system maintenance where existing designs already incorporate this component.

Compliance and Availability:

All recommended substitutes maintain ROHS3 compliance and REACH unaffected status. The Fairchild FDPF16N50UT and STMicroelectronics STF13NK50Z are both active products with confirmed inventory availability. Selection between these two active alternatives depends on application current requirements and thermal management considerations.

Frequently Asked Questions (FAQ)

Q: Can the STF13NK50Z replace the FDPF16N50UT in all applications?

A: The STF13NK50Z is suitable for applications where the continuous drain current requirement does not exceed 11A at 25°C. The reduced current rating (11A versus 15A) and lower power dissipation (30W versus 38.5W) must be verified against circuit design specifications. Both parts maintain identical 500V Vdss, 480mOhm Rds On performance, and -55°C to 150°C operating temperature range.

Q: What is the difference between the onsemi and Fairchild FDPF16N50UT variants?

A: Both parts are electrically and mechanically identical with matching part numbers. The primary difference is manufacturer and product status: the onsemi version is obsolete, while the Fairchild version is active. The Fairchild variant provides ongoing availability and supply chain support for new and existing designs.

Q: Is the R5011FNX suitable for new designs?

A: No. The R5011FNX is classified as Not For New Designs. This part is restricted to legacy system maintenance and repair applications only. New designs should utilize the Fairchild FDPF16N50UT or STF13NK50Z.

Q: Are all substitute parts housed in identical TO-220 packages?

A: All substitute parts use TO-220-3 through-hole packages. Minor package variant designations exist (TO-220F-3, TO-220FP, TO-220FM) but are mechanically and electrically compatible within standard TO-220 footprints. Verify PCB layout compatibility with specific package variant documentation.

Q: What are the key electrical differences between the STF13NK50Z and R5011FNX?

A: The STF13NK50Z offers superior specifications with 11A continuous drain current (Tc), 480mOhm Rds On, and 30W power dissipation. The R5011FNX provides lower continuous drain current (5.4A Tc), higher Rds On (520mOhm), and 50W power dissipation. The STF13NK50Z is the preferred active alternative; the R5011FNX is restricted to legacy applications.

Q: Do all substitute parts meet RoHS3 compliance requirements?

A: The Fairchild FDPF16N50UT, STF13NK50Z, and R5011FNX are all ROHS3 compliant. All parts are REACH unaffected. Compliance documentation is available from respective manufacturers.