AON6552 MOSFET N-CH 30V 30A Equivalent & Substitute Parts

Part Overview

The AON6552 is an N-channel MOSFET manufactured by Alpha & Omega Semiconductor Inc., rated for 30V drain-to-source voltage and 30A continuous drain current in an 8-DFN package. This device is classified as Not For New Designs, indicating it has been superseded in the manufacturer's product roadmap. Finding equivalent and substitute parts is necessary for ongoing production support, maintenance applications, and design continuity where this component is already deployed.

Substiute Parts

AON6552

Alpha & Omega Semiconductor Inc.In Stock: 23455AON6552 Datasheet

Current PartRFQ

STL66N3LLH5

STMicroelectronicsIn Stock: 3211STL66N3LLH5 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the AON6552 is determined by the following critical electrical and mechanical parameters:

• Drain-to-Source Voltage (Vdss): Must be rated at 30V or higher
• Continuous Drain Current (Id): Must support at least 30A at 25°C
• Package Type: Must be compatible with 8-DFN or equivalent surface-mount footprint
• Technology: N-Channel MOSFET (Metal Oxide Semiconductor Field Effect Transistor)
• Compliance: RoHS3 compliance and REACH unaffected status required for regulatory alignment

The STL66N3LLH5 from STMicroelectronics meets these substitution criteria with a 30V Vdss rating and 80A continuous drain current capability, exceeding the AON6552 performance envelope while maintaining regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

The STL66N3LLH5 is the manufacturer-recommended substitute for the AON6552. Both devices maintain identical Vdss ratings of 30V and are fully compliant with ROHS3 and REACH requirements. The STL66N3LLH5 offers superior current handling capability at 80A continuous drain current, providing design margin beyond the AON6552's 30A specification. The STL66N3LLH5 carries Active product status, ensuring long-term availability and manufacturing support, whereas the AON6552 is designated Not For New Designs. Package compatibility requires PCB layout verification, as the STL66N3LLH5 uses PowerFlat (5x6) geometry compared to the standard 8-DFN of the AON6552.

Frequently Asked Questions (FAQ)

Q: Can the STL66N3LLH5 directly replace the AON6552 without PCB modifications?

A: Electrical substitution is valid based on Vdss and Id ratings. However, the STL66N3LLH5 uses a PowerFlat (5x6) package versus the AON6552's 8-DFN package. PCB footprint compatibility must be verified before implementation. Thermal performance may also differ due to package geometry differences.

Q: What is the primary reason for substituting the AON6552?

A: The AON6552 is classified as Not For New Designs, indicating the manufacturer has discontinued active development and support. The STL66N3LLH5 is an Active product with ongoing manufacturing and technical support.

Q: Are both parts compliant with environmental and regulatory standards?

A: Yes. Both the AON6552 and STL66N3LLH5 are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements.

Q: Does the higher current rating of the STL66N3LLH5 (80A vs. 30A) affect circuit design?

A: The higher current rating provides additional design margin and thermal headroom. No circuit redesign is required for applications operating within the AON6552's 30A specification. Thermal management characteristics may improve due to the larger PowerFlat package.

Q: What packaging formats are available for each part?

A: The AON6552 is supplied in Tape & Reel (TR) format. The STL66N3LLH5 is available in Cut Tape (CT) and Digi-Reel® formats. Verify packaging availability with your supplier for production requirements.