IRLR8103VPBF N-Channel 30V 91A MOSFET Equivalent & Substitute Parts

Part Overview

The IRLR8103VPBF is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 30V drain-to-source voltage and 91A continuous drain current in a surface mount TO-252AA (DPAK) package. This device is part of the HEXFET® series and is classified as discontinued at DiGi Electronics. Due to its discontinued status, equivalent and substitute parts are necessary for ongoing design support, production continuity, and component sourcing.

Key Parameters

Parameter	Value	Unit
Drain-to-Source Voltage (Vdss)	30	V
Continuous Drain Current (Id) @ 25°C	91	A (Tc)
On-Resistance (Rds On) @ 15A, 10V	9	mOhm
Gate Threshold Voltage (Vgs(th)) @ 250µA	3	V
Gate Charge (Qg) @ 5V	27	nC
Power Dissipation (Max)	115	W (Tc)
Operating Temperature Range	-55 to 150	°C (TJ)
Package Type	TO-252-3 (DPAK)	Surface Mount
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the IRLR8103VPBF is determined by the following critical parameters:

Electrical Compatibility Requirements:

Drain-to-Source Voltage (Vdss): Must equal or exceed 30V
Continuous Drain Current (Id): Must meet or exceed 91A at 25°C
On-Resistance (Rds On): Lower values indicate improved performance; values at or below 9mOhm @ specified conditions are preferred
Gate Threshold Voltage (Vgs(th)): Must be compatible with drive circuitry; range of 2V to 3V is acceptable
Power Dissipation: Must support thermal requirements of 115W or greater

Mechanical & Package Compatibility:

Package Type: TO-252-3 (DPAK) or equivalent surface mount packages
Mounting Type: Surface mount only
Pin Configuration: 2 Leads + Tab (standard DPAK configuration)

Compliance & Environmental:

RoHS3 Compliance: Required for regulatory alignment
Moisture Sensitivity Level (MSL): Level 1 (Unlimited) preferred
Operating Temperature: -55°C to 150°C minimum; extended range to 175°C acceptable

Substitute parts are grouped based on whether they meet the full electrical specification (direct substitutes) or provide reduced current capability with trade-offs in other parameters (functional alternatives).

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ 25°C (A)	Rds On (mOhm)	Vgs(th) (V)	Qg (nC)	Power Diss. (W)	Temp Range (°C)	Package	Status
IRLR8103VPBF	Infineon	30	91 (Tc)	9 @ 15A, 10V	3 @ 250µA	27 @ 5V	115	-55 to 150	TO-252AA (DPAK)	Discontinued
IPD090N03LGATMA1	Infineon	30	40 (Tc)	9 @ 30A, 10V	2.2 @ 250µA	15 @ 10V	42	-55 to 175	TO-252-3 (DPAK)	Active
IPD50N03S2L06ATMA1	Infineon	30	50 (Tc)	6.4 @ 50A, 10V	2 @ 85µA	68 @ 10V	136	-55 to 175	TO-252-3 (DPAK)	Active
DMN3010LK3-13	Diodes Inc.	30	43 (Tc)	9.5 @ 18A, 10V	2.5 @ 250µA	37 @ 10V	1.6	-55 to 150	TO-252-3 (DPAK)	Active
FDD8876	onsemi	30	73 (Tc)	8.2 @ 35A, 10V	2.5 @ 250µA	47 @ 10V	70	-55 to 175	TO-252AA (DPAK)	Obsolete
STD100N3LF3	STMicroelectronics	30	80 (Tc)	5.5 @ 40A, 10V	2.5 @ 250µA	27 @ 5V	110	-55 to 175	TO-252-3 (DPAK)	Obsolete
STD150N3LLH6	STMicroelectronics	30	80 (Tc)	2.8 @ 40A, 10V	2.5 @ 250µA	29 @ 4.5V	110	-55 to 175	TO-252-3 (DPAK)	Obsolete
PSMN4R5-40BS,118	Nexperia	40	100 (Tc)	4.5 @ 25A, 10V	4 @ 1mA	42.3 @ 10V	148	-55 to 175	D2PAK (TO-263-3)	Active

Engineering Selection Recommendations

Direct Current Capability Substitutes (≥91A):

The PSMN4R5-40BS,118 from Nexperia is the only substitute that meets or exceeds the 91A continuous drain current specification. This part is rated for 100A at 25°C and features an active product status. However, it operates at 40V Vdss (higher than the 30V requirement) and uses a D2PAK package instead of DPAK, requiring PCB layout modifications. This part is suitable for applications where the higher voltage rating and different package footprint are acceptable.

Reduced Current Capability Substitutes (50A–80A):

The STD100N3LF3 and STD150N3LLH6 from STMicroelectronics provide 80A continuous drain current, approaching the original specification. Both are rated for 30V Vdss and use the TO-252-3 (DPAK) package, ensuring mechanical compatibility. However, both parts are classified as obsolete. The STD150N3LLH6 offers superior on-resistance (2.8mOhm) compared to the original part, improving thermal performance.

The IPD50N03S2L06ATMA1 from Infineon provides 50A continuous drain current with active product status and AEC-Q101 automotive qualification. This part features improved on-resistance (6.4mOhm) and extended operating temperature range (-55°C to 175°C). It is suitable for applications where current requirements can be reduced or where automotive-grade reliability is required.

Lower Current Capability Substitutes (40A–43A):

The IPD090N03LGATMA1 from Infineon and DMN3010LK3-13 from Diodes Incorporated provide 40A and 43A continuous drain current respectively, both with active product status. These parts maintain 30V Vdss and TO-252-3 (DPAK) package compatibility. The IPD090N03LGATMA1 offers extended operating temperature range (-55°C to 175°C) and is part of the OptiMOS™ series. The DMN3010LK3-13 maintains the original operating temperature range (-55°C to 150°C).

Obsolete Alternative (73A):

The FDD8876 from onsemi provides 73A continuous drain current with 30V Vdss and TO-252AA (DPAK) package compatibility. This part is classified as obsolete and should be considered only when active alternatives cannot meet application requirements.

Compliance & Regulatory Alignment:

All substitute parts listed are RoHS3 compliant and carry MSL Level 1 (Unlimited) moisture sensitivity ratings, matching the original part's environmental specifications. The IPD50N03S2L06ATMA1 includes AEC-Q101 automotive qualification, providing additional reliability assurance for automotive applications.

Frequently Asked Questions (FAQ)

Q: Can the IPD090N03LGATMA1 directly replace the IRLR8103VPBF?

A: The IPD090N03LGATMA1 is mechanically compatible (same TO-252-3 DPAK package) and electrically compatible at the gate and drain-source voltage levels. However, it provides only 40A continuous drain current compared to the original 91A specification. This part is suitable for applications where current requirements are 40A or less. For applications requiring the full 91A capability, alternative parts must be evaluated.

Q: What is the primary limitation of substitute parts with reduced current ratings?

A: Substitute parts rated below 91A continuous drain current cannot support the full current-handling capability of the original IRLR8103VPBF. Applications designed for 91A operation must either reduce operating current or select the PSMN4R5-40BS,118, which meets the current requirement but requires package footprint changes and operates at 40V instead of 30V.

Q: Why is the PSMN4R5-40BS,118 rated at 40V instead of 30V?

A: The PSMN4R5-40BS,118 is designed for higher voltage applications. The 40V rating provides additional voltage margin and is not a limitation for 30V applications, as the part will operate safely at lower voltages. However, the D2PAK package requires different PCB layout and thermal management considerations compared to the DPAK package.

Q: Are all substitute parts RoHS3 compliant?

A: Yes, all substitute parts listed in this reference are RoHS3 compliant and carry MSL Level 1 (Unlimited) ratings, matching the environmental and regulatory compliance of the original IRLR8103VPBF.

Q: What is the difference between the STD100N3LF3 and STD150N3LLH6?

A: Both parts provide 80A continuous drain current and 30V Vdss in TO-252-3 (DPAK) packages. The primary difference is on-resistance: the STD150N3LLH6 features 2.8mOhm on-resistance compared to 5.5mOhm for the STD100N3LF3. The lower on-resistance of the STD150N3LLH6 results in reduced power dissipation and improved thermal performance. Both parts are classified as obsolete.

Q: Can I use the IPD50N03S2L06ATMA1 in automotive applications?

A: Yes, the IPD50N03S2L06ATMA1 carries AEC-Q101 automotive qualification, making it suitable for automotive-grade applications. It provides 50A continuous drain current, 30V Vdss, and extended operating temperature range (-55°C to 175°C). This part is recommended for automotive designs where current requirements are 50A or less.

Q: What package considerations apply when selecting a substitute?

A: The IRLR8103VPBF uses a TO-252AA (DPAK) package. Most substitute parts use the equivalent TO-252-3 (DPAK) package, ensuring direct PCB compatibility. The exception is the PSMN4R5-40BS,118, which uses a D2PAK (TO-263-3) package. D2PAK packages have different pin spacing and thermal pad dimensions, requiring PCB layout modifications and potentially improved thermal performance due to larger thermal pad area.

Q: Why are some substitute parts classified as obsolete?

A: Parts such as FDD8876, STD100N3LF3, and STD150N3LLH6 are classified as obsolete because manufacturers have discontinued production in favor of newer technology generations. These parts may still be available through inventory channels but are not recommended for new designs. Active alternatives should be prioritized for long-term design support and production continuity.

Q: How do I determine which substitute part is best for my application?

A: Selection depends on three primary factors: (1) required continuous drain current, (2) package compatibility requirements, and (3) product status preference. For applications requiring 91A or greater, only the PSMN4R5-40BS,118 qualifies, with the trade-off of D2PAK package and 40V rating. For applications requiring 50A–80A with active product status and DPAK compatibility, the IPD50N03S2L06ATMA1 or IPD090N03LGATMA1 are recommended. For applications requiring 80A with DPAK compatibility, the STD100N3LF3 or STD150N3LLH6 are available but obsolete.

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