AOC4810 Equivalent & Substitute Parts

Part Overview

The AOC4810 is a dual N-channel MOSFET array in an 8-AlphaDFN surface mount package, rated for 900mW power dissipation with logic level gate operation. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity. The part features common drain configuration suitable for switching and amplification applications in compact form factors.

Substiute Parts

AOC4810

Alpha & Omega Semiconductor Inc.In Stock: 6357AOC4810 Datasheet

Current PartRFQ

CSD87501L

Texas InstrumentsIn Stock: 15282CSD87501L Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AOC4810 is based on functional equivalence across the following critical parameters:

Configuration Match: Both the main part and substitute maintain dual N-channel common drain topology, ensuring pin-compatible operation in existing circuit designs.

Technology Consistency: Both devices employ metal oxide MOSFET technology with logic level gate operation, supporting direct replacement in logic-driven switching applications.

Thermal Operating Range: Identical -55°C to 150°C junction temperature range ensures equivalent thermal performance across the full operating envelope.

Gate Drive Characteristics: Gate charge specification (20nC for AOC4810 versus 40nC for CSD87501L) and logic level gate feature enable operation from standard logic signal sources.

Moisture Sensitivity: Both parts carry MSL 1 (Unlimited) rating, indicating equivalent moisture handling and storage requirements.

Surface Mount Packaging: Both devices utilize surface mount technology, compatible with standard PCB assembly processes, though package footprints differ (8-AlphaDFN versus 10-Picostar).

The CSD87501L substitute provides enhanced power dissipation capability (2.5W versus 900mW) and active product status, offering improved long-term availability and performance margin.

Parameter Comparison

Engineering Selection Recommendations

For Obsolescence Mitigation: The CSD87501L is the designated manufacturer-recommended substitute, offering active product status from Texas Instruments. This ensures continued availability and supply chain stability compared to the obsolete AOC4810.

For Compliance Requirements: Both parts maintain identical REACH Unaffected and EAR99 ECCN classifications, ensuring equivalent regulatory compliance across jurisdictions. The CSD87501L carries RoHS3 compliance certification, providing additional environmental compliance assurance.

For Thermal Performance: The CSD87501L's 2.5W power rating provides 2.78× greater thermal headroom than the AOC4810's 900mW specification. This enhanced rating accommodates higher current applications and provides design margin for thermal management.

For Circuit Integration: Functional equivalence across configuration, technology, gate drive type, and operating temperature range enables direct functional replacement. However, PCB layout modification is required due to different package footprints (8-AlphaDFN versus 10-Picostar).

For Gate Drive Considerations: The CSD87501L's doubled gate charge (40nC versus 20nC) requires verification that existing gate drive circuitry can supply the increased charge without exceeding timing or power dissipation limits.

Frequently Asked Questions (FAQ)

Q: Can the CSD87501L be used as a direct pin-for-pin replacement for the AOC4810?

A: No. While both devices are dual N-channel MOSFETs with common drain configuration, the package footprints differ (8-AlphaDFN versus 10-Picostar). PCB layout redesign is required. Pin functionality is equivalent, but physical placement differs.

Q: What is the primary reason the AOC4810 requires substitution?

A: The AOC4810 is classified as obsolete. The CSD87501L is the manufacturer-recommended equivalent, providing active product status and long-term supply availability.

Q: Are there electrical performance differences between the AOC4810 and CSD87501L?

A: Yes. The CSD87501L has doubled gate charge (40nC versus 20nC) and higher power dissipation rating (2.5W versus 900mW). Gate drive circuitry must accommodate the increased gate charge. The higher power rating provides additional thermal margin.

Q: Do both parts operate across the same temperature range?

A: Yes. Both the AOC4810 and CSD87501L operate from -55°C to 150°C junction temperature, ensuring equivalent thermal performance across the full operating envelope.

Q: What are the moisture handling requirements for the CSD87501L?

A: The CSD87501L carries MSL 1 (Unlimited) rating, identical to the AOC4810. This indicates unlimited shelf life under normal storage conditions without baking requirements.

Q: Are there regulatory or compliance differences between these parts?

A: Both parts maintain REACH Unaffected status and EAR99 ECCN classification. The CSD87501L additionally carries RoHS3 compliance certification, providing enhanced environmental compliance documentation.

Q: What design considerations apply when switching from AOC4810 to CSD87501L?

A: Primary considerations include PCB footprint redesign for the different package geometry, verification that gate drive circuitry can supply 40nC gate charge, and thermal design validation to utilize the higher 2.5W power rating if applicable to the application.

Q: Is the CSD87501L available in the same packaging format as the AOC4810?

A: No. The AOC4810 uses 8-AlphaDFN (3.2x2mm) packaging, while the CSD87501L uses 10-Picostar (3.37x1.47mm) packaging. Both are surface mount technologies, but footprints are incompatible without PCB redesign.