FDMS86255 N-Channel MOSFET 150V 10A/45A Equivalent & Substitute Parts

Part Overview

The FDMS86255 is an N-Channel MOSFET manufactured by onsemi, rated for 150V drain-to-source voltage with continuous drain current of 10A at Ta and 45A at Tc. This device is housed in an 8-PQFN (5x6) surface mount package and is part of the PowerTrench® series. The FDMS86255 maintains Active product status and is RoHS3 compliant with MSL 1 rating.

Equivalent and substitute parts are identified when they share the same or compatible electrical ratings, package configuration, and operational characteristics. Substitutes enable design flexibility, support supply chain continuity, and provide alternative sourcing options for applications requiring N-Channel MOSFETs in the 150V class.

Substiute Parts

FDMS86255

onsemiIn Stock: 89273FDMS86255 Datasheet

Current PartRFQ

IRFH5015TRPBF

Infineon TechnologiesIn Stock: 33147IRFH5015TRPBF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FDMS86255 is determined by electrical and mechanical compatibility across the following critical parameters:

Voltage Rating Compatibility: The substitute part must maintain the same 150V Vdss rating to ensure safe operation in the target application circuit.

Package Configuration: The substitute must use the 8-PQFN (5x6) surface mount package to ensure mechanical and thermal compatibility with existing PCB layouts and assembly processes.

Continuous Drain Current: The substitute must support equivalent or higher continuous drain current ratings at both Ta (ambient) and Tc (case) conditions to maintain thermal performance and current handling capability.

On-Resistance Characteristics: The substitute's Rds On specification must be compatible with the application's power dissipation and switching loss requirements.

Gate Charge and Input Capacitance: These parameters affect switching speed and gate drive requirements; substitutes must maintain similar or lower values to ensure compatibility with existing gate drive circuits.

Temperature Range and Compliance: The substitute must support the same operating temperature range (-55°C to 150°C) and maintain RoHS3 compliance and MSL 1 rating.

The IRFH5015TRPBF meets these substitution criteria and is classified as a direct equivalent for the FDMS86255.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: The FDMS86255 remains the primary choice when onsemi sourcing is preferred or when the specific on-resistance characteristics at 10A, 10V are critical to application performance.

Substitute Selection: The IRFH5015TRPBF is a qualified substitute when:

Supply availability of the FDMS86255 is constrained and Infineon sourcing is acceptable. The higher continuous drain current rating at Tc (56A versus 45A) provides additional thermal margin in applications operating near maximum current limits. The lower gate charge (50 nC versus 63 nC) reduces gate drive power requirements. The lower input capacitance (2300 pF versus 4480 pF) improves switching speed characteristics.

Compliance Verification: Both parts maintain Active product status, RoHS3 compliance, MSL 1 rating, and identical operating temperature ranges. Both are classified as EAR99 and REACH Unaffected, ensuring regulatory compatibility.

Package and Assembly: Both devices use the 8-PQFN (5x6) surface mount package, ensuring direct PCB layout compatibility without redesign. Thermal performance is equivalent due to identical package geometry.

Frequently Asked Questions (FAQ)

Q: Can the IRFH5015TRPBF be used as a direct replacement for the FDMS86255 without PCB modifications?

A: Yes. Both devices use the 8-PQFN (5x6) surface mount package with identical pinout and footprint. No PCB layout changes are required for mechanical substitution.

Q: What is the significance of the higher continuous drain current rating (56A vs. 45A) of the IRFH5015TRPBF?

A: The higher Tc rating indicates greater thermal capacity under case temperature conditions. This provides additional current handling margin in applications operating near maximum current limits and improves thermal stability under sustained high-current operation.

Q: How do the on-resistance specifications compare between these parts?

A: The FDMS86255 specifies 12.4 mOhm at 10A, 10V, while the IRFH5015TRPBF specifies 31 mOhm at 34A, 10V. These measurements are taken at different current levels, making direct comparison inappropriate. Application-specific thermal and loss analysis is required to determine which device meets performance requirements.

Q: Are there any gate drive circuit modifications needed when substituting the IRFH5015TRPBF?

A: The lower gate charge (50 nC versus 63 nC) and lower input capacitance (2300 pF versus 4480 pF) of the IRFH5015TRPBF may reduce gate drive power requirements. Existing gate drive circuits designed for the FDMS86255 will operate with the substitute without modification, though gate drive efficiency may improve.

Q: Do both parts meet the same regulatory and compliance requirements?

A: Yes. Both the FDMS86255 and IRFH5015TRPBF are RoHS3 compliant, MSL 1 rated, REACH Unaffected, and classified as EAR99. Both support the same operating temperature range (-55°C to 150°C).

Q: What packaging formats are available for each part?

A: The FDMS86255 is supplied in Tape & Reel (TR) format. The IRFH5015TRPBF is supplied in Cut Tape (CT) and Digi-Reel® format. Packaging format selection depends on assembly process requirements and order quantities.

Q: Are there inventory considerations when selecting between these parts?

A: The FDMS86255 has 89,200 pieces in stock, while the IRFH5015TRPBF has 33,100 pieces in stock. Inventory availability may influence sourcing decisions based on project timelines and volume requirements.