AOC2804 Equivalent & Substitute Parts

Part Overview

The AOC2804 is a dual N-channel MOSFET array in a 4-DFN (1.5x1.5) surface mount package, rated for 700mW maximum power dissipation and operating temperatures from -55°C to 150°C. This component is classified as obsolete, making identification of equivalent and substitute parts essential for design continuity and procurement planning. Substitute parts must maintain functional compatibility within the dual N-channel common drain configuration while accommodating package and thermal specifications.

Substiute Parts

AOC2804

Alpha & Omega Semiconductor Inc.In Stock: 3365AOC2804 Datasheet

Current PartRFQ

AOC2806

Alpha & Omega Semiconductor Inc.In Stock: 100154AOC2806 Datasheet

MFR RecommendedRFQ

AOCA32116E

Alpha & Omega Semiconductor Inc.In Stock: 839AOCA32116E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AOC2804 are qualified based on the following criteria:

Configuration Match: All substitutes maintain the 2 N-Channel (Dual) Common Drain topology, ensuring pin-level functional compatibility.

Thermal Operating Range: All substitutes operate across the -55°C to 150°C junction temperature range, matching the original specification.

Compliance & Certification: All substitutes maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring regulatory and environmental compatibility.

Surface Mount Technology: All substitutes use surface mount packaging (4-DFN or 4-AlphaDFN variants), maintaining assembly process compatibility.

Gate Charge Characteristics: Substitute parts exhibit gate charge values within the range of 5.5nC to 12.5nC at 4.5V, representing acceptable variation for dual N-channel MOSFET arrays in this application class.

The AOC2806 and AOCA32116E are manufacturer-recommended substitutes listed in the original part documentation, confirming their qualification as direct alternatives.

Parameter Comparison

Engineering Selection Recommendations

AOC2806 Selection: The AOC2806 is a manufacturer-recommended substitute with identical power rating (700mW) and thermal operating range. This part is classified as obsolete, matching the status of the original AOC2804. The AOC2806 maintains full ROHS3 compliance and MSL 1 rating. Package dimensions increase from 1.5x1.5 to 1.7x1.7, requiring PCB layout verification for space-constrained applications. Gate charge increases from 9.5nC to 12.5nC, which may affect switching characteristics in high-frequency circuits.

AOCA32116E Selection: The AOCA32116E is a manufacturer-recommended substitute with enhanced specifications, including increased power rating (1.7W Ta) and lower gate charge (5.5nC @ 4.5V). This part maintains active product status, ensuring long-term availability and supply chain stability. ROHS3 compliance and MSL 1 rating are maintained. The package footprint is smaller (1.2x1.2), providing space advantages in compact designs. Drain-source voltage rating of 20V and continuous drain current of 6A (Ta) provide performance headroom for applications requiring higher current handling or voltage margins.

Both substitutes are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings, ensuring compatibility with standard surface mount assembly processes and storage conditions.

Frequently Asked Questions (FAQ)

Q: Can the AOC2806 be used as a direct pin-for-pin replacement for the AOC2804?

A: Yes. Both parts maintain the 2 N-Channel (Dual) Common Drain configuration in a 4-DFN package. Pin functionality is identical. However, the package footprint increases from 1.5x1.5 to 1.7x1.7, requiring PCB layout verification to confirm adequate pad spacing and trace routing.

Q: What is the primary advantage of selecting the AOCA32116E over the AOC2806?

A: The AOCA32116E offers active product status, ensuring continued availability and supply chain support. It also provides enhanced thermal performance (1.7W vs. 700mW) and lower gate charge (5.5nC vs. 12.5nC), which reduces switching losses in dynamic applications. The smaller package footprint (1.2x1.2) supports space-constrained designs.

Q: Are all three parts RoHS compliant?

A: Yes. The AOC2804, AOC2806, and AOCA32116E are all ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings, meeting regulatory requirements for lead-free assembly and unrestricted storage conditions.

Q: Does the increase in gate charge from 9.5nC to 12.5nC in the AOC2806 affect circuit performance?

A: Gate charge affects switching speed and driver power requirements. The 3nC increase in the AOC2806 may require driver circuit evaluation in applications with tight switching frequency specifications or high-frequency pulse-width modulation (PWM) control. The AOCA32116E, with 5.5nC gate charge, offers improved switching characteristics.

Q: What is the significance of the AOCA32116E being classified as "Active" versus "Obsolete"?

A: Active product status indicates ongoing manufacturer support, continued production, and long-term availability. Obsolete parts (AOC2804 and AOC2806) have limited remaining inventory and no guaranteed future supply. For new designs or long-term production requirements, the AOCA32116E is the preferred selection.

Q: Can the AOCA32116E be used in applications originally designed for the AOC2804?

A: Yes, provided the application does not have physical space constraints related to the smaller 1.2x1.2 package footprint. The AOCA32116E's enhanced power rating (1.7W) and lower gate charge (5.5nC) make it functionally superior for most applications. PCB layout must be verified to accommodate the different package dimensions.

Q: Are there any thermal considerations when substituting these parts?

A: All three parts operate across -55°C to 150°C junction temperature range. The AOCA32116E's higher power rating (1.7W) provides better thermal margin in applications approaching the 700mW limit of the original AOC2804. Thermal management and PCB copper area should be evaluated based on actual application power dissipation.