AUIRFS4010 N-Channel MOSFET 100V 180A Equivalent & Substitute Parts

Part Overview

The AUIRFS4010 is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 100V drain-to-source voltage with 180A continuous drain current at 25°C. This device is packaged in the D2PAK (TO-263-3) surface mount configuration and is part of the HEXFET® series. The part is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design requirements and production continuity. Substitute parts must maintain electrical compatibility across critical parameters including voltage rating, current capacity, on-resistance characteristics, and thermal performance while accommodating available packaging options.

Key Parameters

Parameter	Value	Unit
Drain-to-Source Voltage (Vdss)	100	V
Continuous Drain Current (Id) @ 25°C	180	A (Tc)
On-Resistance (Rds On) @ 106A, 10V	4.7	mOhm
Gate Threshold Voltage (Vgs(th)) @ 250µA	4	V
Gate Charge (Qg) @ 10V	215	nC
Power Dissipation (Max)	375	W (Tc)
Operating Temperature Range	-55 to 175	°C (TJ)
Package Type	TO-263-3, D2PAK	Surface Mount
FET Technology	MOSFET (Metal Oxide)	N-Channel

Substitute Part Grouping Explanation

Substitution of the AUIRFS4010 is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Drain-to-Source Voltage (Vdss): Must equal or exceed 100V
Continuous Drain Current (Id): Must equal or exceed 180A at 25°C
On-Resistance (Rds On): Must not exceed 4.7mOhm at rated conditions to maintain thermal performance
Gate Threshold Voltage (Vgs(th)): Must be compatible with 10V drive voltage
Maximum Gate Charge (Qg): Lower values preferred for reduced switching losses
Power Dissipation: Must support 375W thermal capability
Operating Temperature: Must span -55°C to 175°C
Package: Surface mount D2PAK (TO-263-3) or equivalent mechanical footprint
Compliance: RoHS3 compliant, REACH unaffected, MSL 1

Substitution Logic: Parts are grouped into two categories based on current rating alignment:

Direct Current Equivalents (180A rating): Parts matching or exceeding 180A continuous drain current with comparable on-resistance and thermal characteristics.
Reduced Current Alternatives (100A–120A rating): Parts with lower current ratings but maintained voltage and thermal performance, suitable for applications where full 180A capacity is not required.

All substitute parts maintain the same voltage class (100V), surface mount packaging family (D2PAK/TO-263-3 variants), and compliance certifications as the original AUIRFS4010.

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ 25°C (A)	Rds On (mOhm)	Qg (nC)	Power Diss. (W)	Package	Status
AUIRFS4010	Infineon	100	180	4.7	215	375	D2PAK	Obsolete
STH180N10F3-2	STMicroelectronics	100	180	4.5	114.6	315	H2PAK-2	Active
IPB120N10S403ATMA1	Infineon	100	120	3.5	140	250	D2PAK	Active
FDB047N10	onsemi	100	120	4.7	210	375	D2PAK	Active
STH150N10F7-2	STMicroelectronics	100	110	3.9	117	250	H2PAK-2	Active
IPB100N10S305ATMA1	Infineon	100	100	4.8	176	300	D2PAK	Not For New Designs
IPB042N10N3GATMA1	Infineon	100	100	4.2	117	214	D2PAK	Active
PSMN5R6-100BS,118	Nexperia USA Inc.	100	100	5.6	141	306	D2PAK	Active

Engineering Selection Recommendations

Direct Current Equivalent (180A Category):

The STH180N10F3-2 from STMicroelectronics is the primary direct equivalent for the AUIRFS4010. This part maintains the 180A continuous drain current rating with superior on-resistance (4.5mOhm versus 4.7mOhm) and significantly reduced gate charge (114.6nC versus 215nC), resulting in lower switching losses. The device is actively manufactured and fully compliant with RoHS3 and REACH requirements. The H2PAK-2 package is mechanically compatible with D2PAK footprints in most applications. This part is recommended for designs requiring full 180A capacity with improved thermal and switching performance.

Reduced Current Alternatives (100A–120A Category):

For applications where continuous drain current requirements do not exceed 120A, multiple active alternatives are available:

IPB120N10S403ATMA1 (Infineon, 120A): Offers the lowest on-resistance (3.5mOhm) in the substitute group with AEC-Q101 automotive qualification. Actively manufactured in D2PAK packaging. Recommended for automotive and high-reliability applications.
FDB047N10 (onsemi, 120A): Maintains identical power dissipation (375W) and on-resistance (4.7mOhm) to the original AUIRFS4010 with 120A current rating. Actively manufactured in standard D2PAK packaging. Recommended for direct form-fit-function replacement in 120A-rated designs.
STH150N10F7-2 (STMicroelectronics, 110A): Provides 110A continuous current with improved on-resistance (3.9mOhm) and reduced gate charge (117nC). Actively manufactured. Suitable for applications requiring moderate current capacity with enhanced efficiency.
IPB042N10N3GATMA1 (Infineon, 100A): Lowest power dissipation (214W) among substitutes with competitive on-resistance (4.2mOhm). Actively manufactured in D2PAK. Recommended for space-constrained or thermally limited applications.

Avoidance Recommendation:

IPB100N10S305ATMA1 is classified as "Not For New Designs" and should not be selected for new development projects despite technical compatibility.

Frequently Asked Questions (FAQ)

Q: Can the STH180N10F3-2 be used as a direct replacement for the AUIRFS4010 in existing PCB designs?

A: The STH180N10F3-2 maintains electrical equivalence across all critical parameters (100V, 180A, 4.5mOhm on-resistance). However, the package is H2PAK-2 rather than D2PAK. While both are surface mount variants of the TO-263 family with compatible pin configurations, PCB footprint verification is required. Consult the mechanical drawings for both packages to confirm pad layout compatibility.

Q: What is the primary advantage of substituting with IPB120N10S403ATMA1 instead of STH180N10F3-2?

A: The IPB120N10S403ATMA1 offers three distinct advantages: (1) it is manufactured by Infineon, the original AUIRFS4010 manufacturer, ensuring design continuity; (2) it carries AEC-Q101 automotive qualification, required for automotive applications; (3) it is packaged in standard D2PAK, eliminating footprint concerns. The trade-off is reduced current capacity (120A versus 180A), suitable only for applications not requiring full 180A continuous current.

Q: Why do some substitute parts have lower gate charge than the AUIRFS4010?

A: Gate charge (Qg) directly affects switching speed and power loss in the gate drive circuit. Lower gate charge values (such as 114.6nC in STH180N10F3-2 versus 215nC in AUIRFS4010) result in faster switching transitions and reduced switching losses. This is a performance improvement, not a limitation, and is achieved through advanced semiconductor process technology in newer device generations.

Q: Is the PSMN5R6-100BS,118 suitable as a substitute despite its higher on-resistance?

A: The PSMN5R6-100BS,118 has on-resistance of 5.6mOhm, exceeding the AUIRFS4010 specification of 4.7mOhm. This results in higher conduction losses and thermal dissipation. This part is suitable only for applications where the 100A current rating is sufficient and thermal design margins accommodate the increased on-resistance. It is not recommended as a direct replacement for 180A-rated designs.

Q: What packaging considerations apply when substituting D2PAK with H2PAK-2?

A: Both D2PAK and H2PAK-2 are surface mount packages within the TO-263 family with identical pin counts and electrical connections. The primary difference is mechanical footprint and thermal tab design. H2PAK-2 typically offers improved thermal performance due to enhanced tab geometry. PCB layout compatibility must be verified through footprint comparison; however, in most modern designs, the packages are interchangeable with minor layout adjustments.

Q: Can reduced-current substitutes (100A–120A) be used in applications originally designed for 180A?

A: Reduced-current substitutes can be used only if the actual application current requirement does not exceed the substitute part's rating. The original design specification of 180A does not necessarily mean the circuit operates at 180A continuously. Circuit analysis must confirm that peak and continuous current demands remain below the substitute part's rating. Using an undersized device in an over-current condition results in thermal runaway and device failure.

Q: Are all substitute parts RoHS3 compliant and REACH unaffected?

A: Yes. All substitute parts listed in this reference maintain RoHS3 compliance and REACH unaffected status, identical to the original AUIRFS4010. All parts carry MSL 1 (Unlimited) moisture sensitivity classification, requiring no special handling during storage or assembly.

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