AOZ8304DIL Equivalent & Substitute Parts

Part Overview

The AOZ8304DIL is a Transient Voltage Suppressor (TVS) diode manufactured by Alpha & Omega Semiconductor Inc., designed for power line protection in Ethernet and Telecom applications. This steering TVS diode features a 3.3V reverse standoff voltage with a 10V clamping voltage and 25A peak pulse current capability in a compact 10-DFN surface mount package.

The AOZ8304DIL is classified as Obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems utilizing this component.

Substiute Parts

AOZ8304DIL

Alpha & Omega Semiconductor Inc.In Stock: 15374AOZ8304DIL Datasheet

Current PartRFQ

AOZ8318DI

Alpha & Omega Semiconductor Inc.In Stock: 3963AOZ8318DI Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AOZ8304DIL is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Steering TVS diode topology with 4 unidirectional channels
• Reverse standoff voltage and breakdown voltage range suitable for the protected circuit
• Clamping voltage performance at specified peak pulse current
• Peak pulse current rating of 25A (8/20µs)
• Power dissipation capability of 350W
• Low capacitance profile for high-speed signal integrity

Mechanical Compatibility Criteria:

• Surface mount packaging in 10-DFN (2.6x2.6) form factor
• 10-UFDFN Exposed Pad configuration

Compliance Requirements:

• ROHS3 compliance
• MSL Level 1 rating
• REACH Unaffected status

The AOZ8318DI qualifies as a manufacturer-recommended substitute based on identical mechanical packaging, matching peak pulse current and power dissipation ratings, and equivalent compliance certifications. The AOZ8318DI operates across a lower voltage range (2.5V reverse standoff, 5V clamping) and is suitable for applications requiring protection at lower voltage levels while maintaining the same form factor and current handling capability.

Parameter Comparison

Engineering Selection Recommendations

AOZ8304DIL (Obsolete Status): The AOZ8304DIL is no longer in active production. Existing inventory may be available through authorized distributors, but long-term supply cannot be assured. This part is suitable only for repair, rework, or short-term production runs where existing stock is available.

AOZ8318DI (Active Substitute): The AOZ8318DI is the manufacturer-recommended substitute and maintains active production status. This part is suitable for new designs and ongoing production requirements. The AOZ8318DI is ROHS3 compliant and carries MSL Level 1 rating, matching the compliance profile of the original part.

Voltage Rating Consideration: The AOZ8318DI operates at a lower voltage threshold (2.5V reverse standoff vs. 3.3V). Selection between these parts depends on the protected circuit's voltage requirements. The AOZ8318DI is appropriate for circuits operating at or below 2.5V standoff voltage. For circuits requiring 3.3V standoff voltage protection, the AOZ8304DIL specifications must be matched with alternative parts from other manufacturers or higher voltage variants within the AOZ8300 series.

Temperature Range: The AOZ8318DI supports an extended operating temperature range (-40°C ~ 125°C) compared to the AOZ8304DIL (-40°C ~ 85°C), providing additional thermal margin for demanding applications.

Frequently Asked Questions (FAQ)

Q: Can the AOZ8318DI directly replace the AOZ8304DIL in existing designs?

A: Direct replacement is possible only if the protected circuit operates at or below 2.5V reverse standoff voltage. The AOZ8318DI's lower voltage rating (2.5V standoff, 5V clamping) differs from the AOZ8304DIL (3.3V standoff, 10V clamping). Circuit voltage requirements must be verified before substitution.

Q: Are the packages identical between AOZ8304DIL and AOZ8318DI?

A: Yes. Both parts use the 10-UFDFN Exposed Pad package with 2.6x2.6mm dimensions, enabling identical PCB footprints and assembly processes.

Q: What is the difference in capacitance between these parts?

A: The AOZ8318DI has lower capacitance (3pF @ 1MHz) compared to the AOZ8304DIL (5pF @ 1MHz). Lower capacitance may provide improved performance in high-speed signal applications.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the AOZ8304DIL and AOZ8318DI are ROHS3 compliant, carry MSL Level 1 rating, and are REACH Unaffected. Compliance certifications are equivalent.

Q: Why is the AOZ8304DIL marked as Obsolete?

A: The AOZ8304DIL has been discontinued by the manufacturer. The AOZ8318DI represents the active product line continuation for this device family. New designs should utilize the AOZ8318DI to ensure long-term supply availability.

Q: Are the peak pulse current and power ratings the same?

A: Yes. Both parts support 25A peak pulse current (8/20µs) and 350W peak pulse power dissipation, ensuring equivalent current handling capability.