IRL1004S N-Channel 40V 130A MOSFET Equivalent & Substitute Parts

Part Overview

The IRL1004S is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 40V drain-to-source voltage with 130A continuous drain current in D2PAK surface mount packaging. This device is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The IRL1004S belongs to the HEXFET® series and is designed for high-current switching applications requiring low on-resistance and efficient thermal management through its D2PAK package configuration.

Substiute Parts

IRL1004S

Infineon TechnologiesIn Stock: 5167IRL1004S Datasheet

Current PartRFQ

2SK3800VR

Sanken Electric USA Inc.In Stock: 8982SK3800VR Datasheet

MFR RecommendedRFQ

BUK765R2-40B,118

NXP USA Inc.In Stock: 24087BUK765R2-40B,118 Datasheet

MFR RecommendedRFQ

BUK9609-40B,118

Nexperia USA Inc.In Stock: 6360BUK9609-40B,118 Datasheet

MFR RecommendedRFQ

PSMN8R0-40BS,118

Nexperia USA Inc.In Stock: 1753PSMN8R0-40BS,118 Datasheet

MFR RecommendedRFQ

STB120N4LF6

STMicroelectronicsIn Stock: 15511STB120N4LF6 Datasheet

MFR RecommendedRFQ

STB140NF55T4

STMicroelectronicsIn Stock: 15448STB140NF55T4 Datasheet

MFR RecommendedRFQ

STB150NF55T4

STMicroelectronicsIn Stock: 10285STB150NF55T4 Datasheet

MFR RecommendedRFQ

STB85NF55T4

STMicroelectronicsIn Stock: 29424STB85NF55T4 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IRL1004S is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Drain-to-Source Voltage (Vdss): Must equal or exceed 40V
• Continuous Drain Current (Id): Must support minimum 130A or application-specific current requirements
• On-Resistance (Rds On): Lower values preferred for thermal efficiency; values between 4mOhm and 8mOhm are functionally compatible
• Package Type: D2PAK (TO-263-3) surface mount configuration required for mechanical compatibility
• Operating Temperature Range: Must support -55°C to 175°C minimum
• Gate Charge (Qg): Lower values reduce switching losses; range of 21nC to 190nC acceptable depending on application switching frequency

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

Category 1 - 40V Rated Devices: Direct voltage-class substitutes with comparable or higher current ratings and compatible on-resistance characteristics. These include STB120N4LF6, BUK765R2-40B,118, BUK9609-40B,118, PSMN8R0-40BS,118, and 2SK3800VR.

Category 2 - 55V Rated Devices: Higher voltage-class substitutes suitable for applications where voltage margin is beneficial. These include STB140NF55T4, STB150NF55T4, and STB85NF55T4. These devices maintain 40V compatibility while providing additional voltage headroom.

Parameter Comparison

Engineering Selection Recommendations

For Direct 40V Replacement (Same Voltage Class):

STB120N4LF6 is the primary recommendation for applications requiring the lowest on-resistance and fastest switching characteristics. This device is AEC-Q101 qualified automotive-grade, ROHS3 compliant, and actively manufactured by STMicroelectronics. Current rating of 80A is suitable for applications where the full 130A capability of the IRL1004S is not required.

BUK9609-40B,118 and PSMN8R0-40BS,118 are alternative 40V options from Nexperia USA Inc., both ROHS3 compliant and actively produced. BUK9609-40B,118 features lower gate charge (32nC) for reduced switching losses, while PSMN8R0-40BS,118 offers the lowest gate charge (21nC) among 40V substitutes.

For Higher Voltage Margin (55V Class):

STB150NF55T4 provides the closest current rating match to the IRL1004S at 120A continuous drain current, with 55V voltage rating providing additional design margin. This device is ROHS3 compliant, AEC-Q101 qualified, and actively manufactured.

STB140NF55T4 and STB85NF55T4 are additional 55V options with 80A ratings, suitable for applications where voltage headroom is prioritized over current capacity.

Compliance Considerations:

All recommended active substitutes are ROHS3 compliant, addressing the non-compliant status of the obsolete IRL1004S. Devices with AEC-Q101 qualification (STB120N4LF6, BUK765R2-40B,118, BUK9609-40B,118, STB150NF55T4) are suitable for automotive and high-reliability applications.

Package Compatibility:

All recommended substitutes except 2SK3800VR maintain the D2PAK (TO-263-3) surface mount package, ensuring direct PCB layout compatibility. The 2SK3800VR uses TO-220S package and requires layout modification.

Frequently Asked Questions (FAQ)

Q: Can I use a 55V rated MOSFET as a direct replacement for the 40V IRL1004S?

A: Yes. A 55V rated device is electrically compatible with a 40V application. The higher voltage rating provides additional design margin and does not degrade performance in 40V circuits. All electrical parameters remain valid within the 40V operating range.

Q: What is the significance of on-resistance (Rds On) when selecting a substitute?

A: On-resistance directly affects power dissipation and thermal performance. Lower Rds On values reduce heat generation at the same current level. The IRL1004S has 6.5mOhm at 78A, 10V. Substitutes with 4mOhm to 8mOhm are functionally equivalent; lower values improve efficiency, higher values increase thermal load.

Q: Does gate charge (Qg) affect my circuit design?

A: Gate charge influences switching speed and driver power requirements. Lower Qg values (21nC to 80nC) reduce switching losses and allow faster switching frequencies. Higher Qg values (142nC to 190nC) require more driver current but do not prevent substitution in standard applications.

Q: Is the D2PAK package critical for substitution?

A: Yes, for direct PCB compatibility. All recommended substitutes maintain D2PAK packaging except 2SK3800VR, which uses TO-220S and requires PCB layout modification. D2PAK provides superior thermal performance through the tab connection to ground plane.

Q: What is the difference between Tc and Ta current ratings?

A: Tc (case temperature) ratings assume active thermal management with heat sink contact. Ta (ambient temperature) ratings assume free air operation. The IRL1004S specifies 130A at Tc; substitutes with Tc ratings are directly comparable. Devices with Ta ratings (2SK3800VR at 70A) indicate lower sustained current capability without active cooling.

Q: Are all recommended substitutes RoHS compliant?

A: All active substitutes are ROHS3 compliant. The IRL1004S is RoHS non-compliant due to its obsolete status. Selecting ROHS3 compliant substitutes ensures compliance with current environmental regulations and supply chain requirements.

Q: Can I substitute a lower current rated device if my application does not require 130A?

A: Yes, if your application current requirement is lower. For example, if your circuit requires 75A maximum, BUK765R2-40B,118, BUK9609-40B,118, or STB140NF55T4 are suitable. Verify that the selected device's current rating exceeds your peak application current with adequate margin.

Q: What thermal considerations apply when substituting the IRL1004S?

A: The IRL1004S dissipates 200W at Tc. Substitute devices have varying power dissipation ratings (86W to 300W). Lower Rds On values in substitutes may reduce thermal load. Verify that your thermal management system (heat sink, PCB copper area) accommodates the substitute device's power dissipation characteristics.

Q: Are there any gate voltage (Vgs) compatibility issues?

A: The IRL1004S accepts ±16V gate voltage. Most substitutes accept ±15V to ±20V, providing compatibility with standard gate driver circuits. Verify your gate driver output voltage does not exceed the substitute device's Vgs(Max) specification.

Q: Which substitute offers the best overall performance match to the IRL1004S?

A: STB150NF55T4 provides the closest current rating match (120A vs. 130A) with 55V voltage rating, ROHS3 compliance, and AEC-Q101 qualification. For applications requiring exact 40V operation without voltage margin, STB120N4LF6 offers superior on-resistance (4mOhm) and active automotive qualification.