AUIRF2903ZSTRL N-Channel 30V 160A MOSFET Equivalent & Substitute Parts

Part Overview

The AUIRF2903ZSTRL is an N-Channel MOSFET manufactured by Infineon Technologies, designed for high-current switching applications with a 30V drain-to-source voltage rating and 160A continuous drain current capability. This device is part of the HEXFET® series and features a D2PAK surface mount package.

The AUIRF2903ZSTRL carries a product status of "Not For New Designs," indicating that Infineon has discontinued this component for new applications. This status necessitates identification of functionally equivalent alternatives that maintain compatibility with existing circuit designs while offering active product support and continued availability.

Substiute Parts

AUIRF2903ZSTRL

Infineon TechnologiesIn Stock: 910AUIRF2903ZSTRL Datasheet

Current PartRFQ

IPB80N03S4L02ATMA1

Infineon TechnologiesIn Stock: 813IPB80N03S4L02ATMA1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AUIRF2903ZSTRL is determined by the following critical electrical and mechanical parameters:

Voltage Rating Compatibility: The substitute part must maintain the same 30V Vdss rating to ensure safe operation within the original circuit design envelope.

Package Compatibility: The substitute must use the D2PAK (TO-263-3) surface mount package to maintain mechanical and thermal interface compatibility with existing PCB layouts.

Current Handling: While the AUIRF2903ZSTRL is rated for 160A continuous drain current, substitute parts with lower current ratings may be acceptable depending on circuit requirements, provided the actual application current does not exceed the substitute's rating.

On-State Resistance: The Rds On specification directly affects power dissipation and thermal performance. Substitute parts with equivalent or lower Rds On values maintain or improve circuit efficiency.

Gate Charge and Threshold Voltage: These parameters influence switching speed and gate drive requirements. Substitutes with comparable values ensure compatible gate driver operation.

Temperature Range: The operating temperature range of -55°C to 175°C must be maintained or exceeded in substitute parts.

Compliance and Status: Active product status and current RoHS3 compliance ensure long-term availability and regulatory alignment.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: IPB80N03S4L02ATMA1

The IPB80N03S4L02ATMA1 is the manufacturer-recommended substitute for the AUIRF2903ZSTRL. Both devices share identical voltage ratings (30V Vdss) and equivalent on-state resistance specifications (2.4 mOhm @ 10V). Both maintain the same D2PAK surface mount package, ensuring direct PCB compatibility without layout modifications.

The IPB80N03S4L02ATMA1 carries an Active product status, confirming ongoing manufacturing support and long-term availability. This contrasts with the AUIRF2903ZSTRL's "Not For New Designs" status, making it the appropriate choice for design continuity and supply chain stability.

Both devices are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. Operating temperature ranges are identical (-55°C to 175°C), ensuring thermal performance compatibility.

Current Rating Consideration: The IPB80N03S4L02ATMA1 is rated for 80A continuous drain current, compared to the AUIRF2903ZSTRL's 160A rating. This substitution is valid only when the actual circuit current requirement does not exceed 80A. For applications requiring the full 160A capability, alternative high-current N-Channel 30V MOSFETs in D2PAK packaging must be evaluated against the specified parameter set.

Gate Drive Compatibility: The IPB80N03S4L02ATMA1 features a lower gate threshold voltage (2.2V vs. 4V) and reduced gate charge (140 nC vs. 240 nC), resulting in faster switching response and reduced gate driver power consumption. Existing gate drive circuits designed for the AUIRF2903ZSTRL will operate reliably with the substitute.

Frequently Asked Questions (FAQ)

Q: Can the IPB80N03S4L02ATMA1 be used as a direct replacement for the AUIRF2903ZSTRL in all applications?

A: Direct substitution is valid when the circuit current requirement does not exceed 80A. The IPB80N03S4L02ATMA1 is rated for 80A continuous drain current, while the AUIRF2903ZSTRL is rated for 160A. If your application requires current above 80A, the substitute is not appropriate. Verify actual circuit current requirements before substitution.

Q: Are there PCB layout changes required when substituting the IPB80N03S4L02ATMA1 for the AUIRF2903ZSTRL?

A: No PCB layout changes are required. Both devices use the identical D2PAK (TO-263-3) surface mount package with the same pin configuration and thermal tab placement. The substitute can be mounted directly into existing footprints without modification.

Q: How do the gate drive requirements differ between these two MOSFETs?

A: The IPB80N03S4L02ATMA1 has a lower gate threshold voltage (2.2V vs. 4V) and lower gate charge (140 nC vs. 240 nC). Existing gate drive circuits will operate with the substitute, but the lower threshold voltage may result in slightly faster switching transitions. No gate driver redesign is necessary.

Q: What is the significance of the "Not For New Designs" status on the AUIRF2903ZSTRL?

A: This status indicates that Infineon has discontinued the AUIRF2903ZSTRL for new product development. While existing inventory may be available, the manufacturer no longer supports new designs using this part. The IPB80N03S4L02ATMA1, with Active status, is the recommended path forward for design continuity and supply chain assurance.

Q: Are both devices RoHS3 compliant?

A: Yes. Both the AUIRF2903ZSTRL and IPB80N03S4L02ATMA1 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the thermal performance difference between these devices?

A: The AUIRF2903ZSTRL has a maximum power dissipation rating of 231W, while the IPB80N03S4L02ATMA1 is rated for 136W. The lower power dissipation rating of the substitute reflects its lower current rating (80A vs. 160A). For applications operating below 80A, thermal performance will be adequate. Thermal design calculations should be performed based on actual circuit current and duty cycle.