AON7820 Equivalent & Substitute Parts

Part Overview

The AON7820 is a dual N-channel MOSFET array in an 8-DFN surface mount package, rated for 20V drain-to-source voltage with a maximum power dissipation of 3.1W. This component features logic level gate operation and is designed for applications requiring compact, high-density integration of dual FET functionality.

The AON7820 is classified as obsolete. Identifying suitable substitute components is necessary to maintain design continuity and ensure availability for new production runs and ongoing support of existing applications.

Substiute Parts

AON7820

Alpha & Omega Semiconductor Inc.In Stock: 1405AON7820 Datasheet

Current PartRFQ

AON6816

Alpha & Omega Semiconductor Inc.In Stock: 1840AON6816 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AON7820 is determined by the following critical parameters:

Configuration Match: The substitute must maintain a dual N-channel common drain configuration to preserve circuit topology and pin compatibility.

Voltage Rating: The substitute must support the application's maximum operating voltage. The AON7820 operates at 20V Vdss; substitutes with equal or higher voltage ratings are acceptable.

Logic Level Gate Operation: The substitute must feature logic level gate characteristics to ensure compatibility with existing gate drive circuitry.

Surface Mount Package: The substitute must be surface mount to maintain PCB assembly compatibility.

Operating Temperature Range: The substitute must support the full operating temperature range of -55°C to 150°C (TJ).

Manufacturer Continuity: Substitutes from the same manufacturer (Alpha & Omega Semiconductor Inc.) ensure consistent quality and documentation standards.

The AON6816 meets all substitution criteria while offering enhanced electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The AON7820 is classified as obsolete, while the AON6816 is active. Selection of the AON6816 ensures access to current manufacturing, technical support, and long-term availability.

Compliance and Certifications: Both parts share identical REACH status (REACH Unaffected), ECCN classification (EAR99), and HTSUS code (8541.29.0095), ensuring regulatory equivalence. The AON6816 carries RoHS3 compliance certification, providing additional environmental compliance assurance.

Electrical Performance: The AON6816 provides a higher voltage rating (30V versus 20V), enabling use in applications with higher supply voltages while maintaining backward compatibility with 20V designs. The substitute's continuous drain current specification (17A) and on-resistance characteristics (6.2mOhm @ 16A, 10V) represent enhanced performance metrics compared to the unspecified parameters of the AON7820.

Thermal and Operational Range: Both components operate across the identical temperature range (-55°C to 150°C TJ), ensuring thermal compatibility in all operating environments.

Moisture Sensitivity: Both parts maintain MSL 1 (Unlimited) classification, indicating no moisture sensitivity constraints during storage or handling.

Frequently Asked Questions (FAQ)

Q: Can the AON6816 directly replace the AON7820 in existing designs?

A: Yes. Both components share identical dual N-channel common drain configuration, logic level gate operation, surface mount technology, and operating temperature range. The AON6816's higher voltage rating (30V) and enhanced current capability provide functional equivalence and performance improvement for applications originally designed for the AON7820.

Q: What are the package differences between these parts?

A: The AON7820 uses an 8-PowerVDFN (3x3) package, while the AON6816 uses an 8-DFN (5x6) package. Both are surface mount 8-pin DFN variants with power dissipation capabilities. PCB layout modifications may be required to accommodate the different package footprints.

Q: Are there compliance or regulatory differences between the two parts?

A: Both parts share identical REACH status, ECCN classification, and HTSUS codes. The AON6816 carries additional RoHS3 compliance certification. No regulatory barriers exist to substitution.

Q: What is the significance of the voltage rating difference?

A: The AON6816's 30V rating provides a 50% margin above the AON7820's 20V specification. This allows the substitute to operate safely in applications with higher supply voltages or transient overvoltage conditions while remaining fully compatible with 20V designs.

Q: How do the gate charge specifications compare?

A: The AON7820 specifies 22nC @ 4.5V, while the AON6816 specifies 45nC @ 10V. Gate charge is measured at different gate voltage levels, making direct comparison dependent on the specific gate drive voltage used in the application. Higher gate charge typically correlates with higher current capability.

Q: What is the inventory status for these parts?

A: The AON7820 has 1358 pieces in stock but is obsolete. The AON6816 has 1795 pieces in stock and is active, ensuring continued availability for future orders and production requirements.