AUIRFS4115 N-Channel MOSFET 150V 99A Equivalent & Substitute Parts

Part Overview

The AUIRFS4115 is an N-Channel MOSFET manufactured by Infineon Technologies, designed for high-current switching applications requiring 150V drain-to-source voltage capability. This device features the HEXFET® series technology and is housed in a D2PAK surface mount package. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for design continuity and procurement planning. Substitute parts must maintain electrical compatibility across voltage ratings, current handling capacity, and thermal characteristics while supporting the same surface mount packaging format.

Substiute Parts

AUIRFS4115

Infineon TechnologiesIn Stock: 1241AUIRFS4115 Datasheet

Current PartRFQ

IXFA110N15T2-TRL

IXYSIn Stock: 907IXFA110N15T2-TRL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AUIRFS4115 is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Drain-to-Source Voltage (Vdss): Must equal or exceed 150V
• Continuous Drain Current (Id): Must equal or exceed 99A at 25°C
• Gate Drive Voltage: Must support 10V drive condition
• Package Type: Must be D2PAK or TO-263 surface mount variant
• Operating Temperature Range: Must span -55°C to 175°C minimum
• RoHS and REACH Compliance: Must maintain ROHS3 Compliant and REACH Unaffected status

Secondary Compatibility Parameters:

• Rds On characteristics must be evaluated at equivalent test conditions
• Gate threshold voltage (Vgs(th)) must fall within ±20V maximum gate voltage specification
• Gate charge and input capacitance values inform switching performance but do not disqualify substitution if primary criteria are met

The IXFA110N15T2-TRL meets all primary substitution criteria and is classified as an active product, providing long-term availability assurance.

Parameter Comparison

Engineering Selection Recommendations

The IXFA110N15T2-TRL is the qualified substitute for the obsolete AUIRFS4115 based on the following engineering factors:

Electrical Compatibility: Both devices operate at identical 150V Vdss rating. The IXFA110N15T2-TRL provides 110A continuous drain current, exceeding the AUIRFS4115 specification of 99A, ensuring adequate current margin for existing circuit designs. Gate drive voltage requirements are identical at 10V.

Thermal Performance: The IXFA110N15T2-TRL offers superior power dissipation capability at 480W versus 375W, providing thermal headroom in applications approaching maximum power limits.

Package Compatibility: Both devices utilize D2PAK / TO-263 surface mount packaging with identical pinout configuration (2 Leads + Tab), enabling direct PCB footprint compatibility without layout modification.

Regulatory Compliance: Both parts maintain ROHS3 Compliant and REACH Unaffected status, satisfying environmental and regulatory requirements for current manufacturing standards.

Product Lifecycle: The IXFA110N15T2-TRL is classified as Active, ensuring continued availability and manufacturing support, whereas the AUIRFS4115 is Obsolete.

Frequently Asked Questions (FAQ)

Q: Can the IXFA110N15T2-TRL be used as a direct replacement for the AUIRFS4115 without circuit modification?

A: Yes. Both devices share identical 150V Vdss rating, 10V gate drive voltage, D2PAK surface mount packaging, and -55°C to 175°C operating temperature range. The IXFA110N15T2-TRL's higher current rating (110A vs. 99A) and power dissipation (480W vs. 375W) provide performance margin without requiring design changes.

Q: What are the key differences between these two MOSFETs?

A: The primary differences are: (1) Product Status—AUIRFS4115 is Obsolete while IXFA110N15T2-TRL is Active; (2) Continuous Drain Current—110A versus 99A; (3) Power Dissipation—480W versus 375W; (4) Gate Charge—150nC versus 120nC; (5) Manufacturer—IXYS versus Infineon Technologies. All differences favor the substitute part.

Q: Are the D2PAK and TO-263AA packages mechanically identical?

A: Both packages are D2PAK / TO-263 variants with identical pinout and lead configuration (2 Leads + Tab). They are mechanically and electrically interchangeable on standard PCB layouts designed for D2PAK surface mount components.

Q: Do both parts meet current environmental compliance standards?

A: Yes. Both the AUIRFS4115 and IXFA110N15T2-TRL are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements for electronic component manufacturing and distribution.

Q: What is the significance of the higher gate charge specification in the IXFA110N15T2-TRL?

A: The IXFA110N15T2-TRL specifies 150nC gate charge versus 120nC for the AUIRFS4115. This parameter affects gate drive circuit design and switching speed. Existing gate drive circuits designed for the AUIRFS4115 will function with the substitute; however, switching transient characteristics may differ slightly due to the higher gate charge value.

Q: Is the IXFA110N15T2-TRL available in Tape & Reel packaging?

A: Yes. The IXFA110N15T2-TRL is supplied in Tape & Reel (TR) format, suitable for automated assembly processes. The AUIRFS4115 packaging format is not specified in the provided data.