IRFSL4310PBF N-Channel MOSFET 100V 130A Equivalent & Substitute Parts

Part Overview

The IRFSL4310PBF is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 100V drain-to-source voltage with 130A continuous drain current at 25°C. This device is housed in a TO-262 through-hole package and is designed for high-current switching applications requiring 300W power dissipation capability. The IRFSL4310PBF is classified as obsolete, making identification of functionally equivalent substitute components essential for ongoing design support and production continuity. Substitute parts must maintain compatibility with existing PCB layouts, thermal management systems, and electrical performance requirements while meeting current component availability and compliance standards.

Substiute Parts

IRFSL4310PBF

Infineon TechnologiesIn Stock: 1466IRFSL4310PBF Datasheet

Current PartRFQ

AOW482

Alpha & Omega Semiconductor Inc.In Stock: 2405AOW482 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IRFSL4310PBF is determined by strict adherence to the following electrical and mechanical parameters:

Critical Substitution Criteria:

1. Voltage Rating (Vdss): Substitute parts must equal or exceed 100V. The AOW482 provides 80V, which is below the main part specification.

2. Continuous Drain Current (Id @ 25°C): Substitute parts must support minimum 130A at Tc (case temperature). The AOW482 provides 105A (Tc), which is below the main part requirement.

3. On-State Resistance (Rds On): Substitute parts must maintain comparable or lower resistance at specified current and gate voltage conditions to ensure thermal performance equivalence.

4. Package Compatibility: Both parts must use TO-262-3 through-hole packaging to maintain PCB layout compatibility without redesign.

5. Operating Temperature Range: Substitute parts must support the full -55°C to 175°C (TJ) operating range.

6. Gate Drive Voltage: Substitute parts must operate within standard gate drive voltage specifications (±20V or greater).

Substitution Assessment:

The AOW482 does not meet the substitution criteria for the IRFSL4310PBF. The AOW482 has a lower Vdss rating (80V versus 100V) and lower continuous drain current capability (105A Tc versus 130A Tc). These parameter reductions make the AOW482 unsuitable as a direct substitute in applications requiring the full electrical specifications of the IRFSL4310PBF.

Parameter Comparison

Engineering Selection Recommendations

Substitution Feasibility:

The AOW482 is listed as a substitute for the IRFSL4310PBF; however, this substitution is not recommended for applications requiring the full electrical specifications of the main part. The AOW482 has reduced voltage and current ratings that fall below the IRFSL4310PBF specifications.

Compliance and Availability:

The IRFSL4310PBF is classified as obsolete, while the AOW482 is active and currently in production. The AOW482 carries ROHS3 compliance certification, whereas the IRFSL4310PBF status is not specified in the provided data. Both parts are REACH Unaffected and classified under ECCN EAR99.

Application-Specific Considerations:

For applications operating at or near the IRFSL4310PBF's rated specifications (100V, 130A continuous), the AOW482 cannot serve as a direct replacement due to its lower voltage and current ratings. The AOW482 is suitable only for applications with reduced voltage requirements (80V maximum) and lower current demands (105A maximum at case temperature).

Inventory Status:

The IRFSL4310PBF has 1444 pieces in stock as new original inventory. The AOW482 has 2300 pieces available. For applications requiring the original specifications, existing IRFSL4310PBF inventory should be prioritized. For new designs or applications with reduced electrical requirements, the AOW482 offers active production status and improved availability.

Frequently Asked Questions (FAQ)

Q: Can the AOW482 directly replace the IRFSL4310PBF in existing designs?

A: No. The AOW482 has lower voltage (80V versus 100V) and current (105A versus 130A) ratings. Direct substitution is not possible without circuit redesign and verification that the application does not require the full specifications of the IRFSL4310PBF.

Q: What are the key electrical differences between these parts?

A: The primary differences are drain-to-source voltage rating (100V main part versus 80V substitute) and continuous drain current capability (130A main part versus 105A substitute). Both parts share the same TO-262 package and similar operating temperature ranges.

Q: Are the packages physically identical?

A: Yes. Both the IRFSL4310PBF and AOW482 use TO-262-3 long-lead through-hole packaging, allowing physical interchangeability on PCBs without layout modification. However, electrical compatibility must be verified before substitution.

Q: What is the significance of the product status difference?

A: The IRFSL4310PBF is obsolete, meaning Infineon no longer manufactures this part. The AOW482 is active and in current production. For new designs or long-term production requirements, the AOW482 offers supply continuity, though with reduced electrical specifications.

Q: How do the on-state resistance values compare?

A: The IRFSL4310PBF specifies 7 mOhm at 75A and 10V gate voltage. The AOW482 specifies 7.2 mOhm at 20A and 10V gate voltage. These measurements are taken at different current levels, making direct comparison difficult. At equivalent current levels, the AOW482 may exhibit higher resistance.

Q: Are there compliance or certification differences?

A: The AOW482 is ROHS3 compliant. Both parts are REACH Unaffected and classified as EAR99. Compliance requirements for your specific application should be verified against these certifications.

Q: What gate charge differences exist between these parts?

A: The IRFSL4310PBF has 250 nC gate charge at 10V, while the AOW482 has 81 nC. The lower gate charge of the AOW482 may reduce gate drive power requirements and switching losses in applications using these devices.

Q: Can the AOW482 be used in applications with lower voltage and current requirements?

A: Yes. If your application operates below 80V and requires less than 105A continuous drain current, the AOW482 is electrically suitable. The TO-262 package compatibility ensures physical interchangeability. Thermal management and gate drive circuits should be verified for the specific application.