IRFS4610PBF N-Channel 100V 73A MOSFET Equivalent & Substitute Parts

Part Overview

The IRFS4610PBF is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 100V drain-to-source voltage with 73A continuous drain current at 25°C. The device is housed in a D2PAK (TO-263-3) surface mount package and delivers 190W maximum power dissipation. This part is classified as Obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. Substitute parts must maintain electrical compatibility across drain-source voltage, continuous drain current, on-resistance characteristics, and thermal performance while accommodating the D2PAK package form factor.

Key Parameters

Parameter	Value	Unit
Drain-to-Source Voltage (Vdss)	100	V
Continuous Drain Current (Id) @ 25°C	73	A
On-Resistance (Rds On) @ 44A, 10V	14	mOhm
Gate-Source Threshold Voltage (Vgs(th)) @ 100µA	4	V
Gate Charge (Qg) @ 10V	140	nC
Power Dissipation (Max)	190	W
Operating Temperature Range	-55 to 175	°C
Package Type	D2PAK (TO-263-3)	—
Mounting Type	Surface Mount	—

Substitute Part Grouping Explanation

Substitution eligibility for the IRFS4610PBF is determined by the following criteria:

Primary Electrical Parameters:

Drain-to-Source Voltage (Vdss): Must equal or exceed 100V
Continuous Drain Current (Id): Must equal or exceed 73A at 25°C
On-Resistance (Rds On): Must not significantly exceed 14mOhm at rated conditions to maintain thermal performance
Gate-Source Threshold Voltage (Vgs(th)): Must fall within ±20V gate voltage range
Operating Temperature Range: Must support -55°C to 175°C

Mechanical & Package Requirements:

Package Type: D2PAK (TO-263-3) surface mount configuration
Mounting Type: Surface mount compatibility
Moisture Sensitivity Level: MSL 1 (Unlimited)

Compliance & Status:

RoHS3 Compliance required
REACH Unaffected status required
Product Status: Active or Not For New Designs acceptable; Obsolete parts listed for reference only

Substitute parts are grouped into two categories: Direct Equivalents (identical electrical specifications and packaging) and Functional Alternatives (meet or exceed electrical requirements with compatible packaging).

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ 25°C (A)	Rds On @ 10V (mOhm)	Qg @ 10V (nC)	Power Diss. (W)	Product Status	RoHS Status
IRFS4610PBF	Infineon	100	73	14 @ 44A	140	190	Obsolete	REACH Unaffected
IRFS4610TRLPBF	Infineon	100	73	14 @ 44A	140	190	Not For New Designs	ROHS3 Compliant
PSMN013-100BS,118	Nexperia USA Inc.	100	68	13.9 @ 15A	59	170	Active	ROHS3 Compliant
PSMN015-100B,118	Nexperia USA Inc.	100	75	15 @ 25A	90	300	Active	ROHS3 Compliant
STB80NF10T4	STMicroelectronics	100	80	15 @ 40A	182	300	Active	ROHS3 Compliant
STB120NF10T4	STMicroelectronics	100	110	10.5 @ 60A	233	312	Active	ROHS3 Compliant
IPB123N10N3GATMA1	Infineon	100	58	12.3 @ 46A	35	94	Active	ROHS3 Compliant
IPB144N12N3GATMA1	Infineon	120	56	14.4 @ 56A	49	107	Active	ROHS3 Compliant
IPB50N10S3L16ATMA1	Infineon	100	50	15.4 @ 50A	64	100	Active	ROHS3 Compliant
NVB6411ANT4G	onsemi	100	77	14 @ 72A	100	217	Obsolete	ROHS3 Compliant

Engineering Selection Recommendations

Direct Equivalent (Preferred for Replacement):

IRFS4610TRLPBF is the direct equivalent to IRFS4610PBF. Both devices share identical electrical specifications: 100V Vdss, 73A continuous drain current, 14mOhm on-resistance at 44A/10V, and 190W power dissipation. The primary difference is product status (Not For New Designs versus Obsolete) and packaging format (Cut Tape & Digi-Reel versus standard packaging). IRFS4610TRLPBF is ROHS3 Compliant and maintains full electrical compatibility. This part is recommended for direct substitution in existing designs requiring the IRFS4610PBF.

Active Alternatives (For New Designs):

PSMN015-100B,118 (Nexperia) meets or exceeds all electrical requirements with 100V Vdss, 75A continuous drain current (exceeds 73A requirement), and 300W power dissipation. On-resistance is 15mOhm at 25A/10V, marginally higher than the reference part. This device is Active status and ROHS3 Compliant.

STB80NF10T4 (STMicroelectronics) provides 100V Vdss with 80A continuous drain current and 300W power dissipation. On-resistance is 15mOhm at 40A/10V. This part is Active status, ROHS3 Compliant, and offers superior current handling capability.

STB120NF10T4 (STMicroelectronics) delivers the highest performance margin with 100V Vdss, 110A continuous drain current, and 312W power dissipation. On-resistance is 10.5mOhm at 60A/10V, providing improved efficiency. This part is Active status and ROHS3 Compliant.

Lower Current Alternatives (For Reduced Current Applications):

IPB123N10N3GATMA1 (Infineon OptiMOS™) is rated for 100V Vdss with 58A continuous drain current. This part is suitable only for applications where the 73A requirement can be reduced. On-resistance is 12.3mOhm at 46A/10V. Product Status is Active and ROHS3 Compliant.

IPB50N10S3L16ATMA1 (Infineon OptiMOS™) is rated for 100V Vdss with 50A continuous drain current. This part is suitable only for applications where the 73A requirement can be reduced. On-resistance is 15.4mOhm at 50A/10V. Product Status is Active and ROHS3 Compliant.

Higher Voltage Alternative (For Elevated Voltage Applications):

IPB144N12N3GATMA1 (Infineon OptiMOS™) is rated for 120V Vdss with 56A continuous drain current. This part is suitable for applications requiring higher voltage margin but can accept reduced current. On-resistance is 14.4mOhm at 56A/10V. Product Status is Active and ROHS3 Compliant.

Obsolete Reference (Not Recommended for New Designs):

NVB6411ANT4G (onsemi) is listed as Obsolete and should not be selected for new designs. This part is included for reference only in legacy system documentation.

Frequently Asked Questions (FAQ)

Q: Can IRFS4610TRLPBF directly replace IRFS4610PBF in existing designs?

A: Yes. IRFS4610TRLPBF is electrically and mechanically identical to IRFS4610PBF. Both devices feature 100V Vdss, 73A continuous drain current, 14mOhm on-resistance, and D2PAK surface mount packaging. The primary difference is packaging format (tape & reel versus standard) and product status designation. No circuit modifications are required.

Q: What is the minimum continuous drain current requirement for substitution?

A: The IRFS4610PBF is rated for 73A continuous drain current at 25°C. Substitute parts must equal or exceed this specification to maintain design margin and thermal performance. Parts with lower current ratings (such as IPB123N10N3GATMA1 at 58A or IPB50N10S3L16ATMA1 at 50A) are not suitable unless the application circuit is redesigned to operate at reduced current levels.

Q: Are all substitute parts compatible with the D2PAK package footprint?

A: Yes. All listed substitute parts use the D2PAK (TO-263-3) surface mount package. PCB footprints and thermal pad dimensions are standardized across these parts, enabling direct board-level substitution without layout modifications.

Q: What is the significance of on-resistance (Rds On) differences between substitute parts?

A: On-resistance directly affects power dissipation and thermal performance. The IRFS4610PBF specifies 14mOhm at 44A/10V. Substitute parts with higher on-resistance (such as 15mOhm or 15.4mOhm) will generate additional heat at the same current level. Substitute parts with lower on-resistance (such as 10.5mOhm or 12.3mOhm) will reduce heat generation. Thermal analysis is required if on-resistance differs significantly from the reference part.

Q: Can I use STB120NF10T4 as a substitute if my application only requires 60A?

A: Yes. STB120NF10T4 is rated for 110A continuous drain current, which exceeds the 73A requirement of IRFS4610PBF. Using a higher-rated device in a lower-current application provides design margin and improved reliability. The 100V Vdss rating matches the reference part. No circuit modifications are required.

Q: What does "Not For New Designs" product status mean for IRFS4610TRLPBF?

A: "Not For New Designs" indicates that the manufacturer (Infineon) is not recommending this part for new circuit designs. However, the part remains available for purchase and is suitable for replacement in existing designs or legacy system support. For new designs, Active status parts such as STB80NF10T4, STB120NF10T4, or PSMN015-100B,118 are preferred.

Q: Are all substitute parts ROHS3 Compliant?

A: Yes. All listed substitute parts carry ROHS3 Compliant status and REACH Unaffected designation, meeting current environmental and regulatory requirements for electronic components.

Q: What is the difference between Infineon HEXFET® and OptiMOS™ series devices?

A: HEXFET® and OptiMOS™ are different technology platforms from Infineon. HEXFET® devices (such as IRFS4610PBF and IRFS4610TRLPBF) represent an earlier generation. OptiMOS™ devices (such as IPB123N10N3GATMA1, IPB144N12N3GATMA1, and IPB50N10S3L16ATMA1) represent a newer generation with improved efficiency characteristics. Both families are compatible in D2PAK packaging and support the same voltage and temperature ranges. Selection between families depends on specific current and thermal requirements.

Q: Can I substitute a 120V rated device (IPB144N12N3GATMA1) for a 100V rated device (IRFS4610PBF)?

A: Yes, with design margin consideration. IPB144N12N3GATMA1 is rated for 120V Vdss, which exceeds the 100V requirement of IRFS4610PBF. However, this part is rated for only 56A continuous drain current, which is below the 73A requirement. Substitution is only suitable if the application circuit can operate at reduced current levels (56A maximum). Thermal analysis is required due to the lower power dissipation rating (107W versus 190W).

Q: What packaging formats are available for substitute parts?

A: Substitute parts are available in the following packaging formats: Cut Tape (CT) & Digi-Reel®, Tape & Reel (TR), and standard packaging. All formats use the D2PAK (TO-263-3) surface mount package. Selection of packaging format depends on procurement and assembly requirements. Electrical and mechanical compatibility remains identical across all packaging formats.

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