AOZ8809DI-03 Equivalent & Substitute Parts

Part Overview

The AOZ8809DI-03 is a steering (rail to rail) transient voltage suppressor diode manufactured by Alpha & Omega Semiconductor Inc., designed for HDMI applications. It features an 8V clamp voltage with 12A peak pulse current capability in a 10-DFN surface mount package. The part is classified as "Not For New Designs," indicating it has reached end-of-life status. This necessitates identification of equivalent and substitute components for ongoing production support and new design alternatives.

Substiute Parts

AOZ8809DI-03

Alpha & Omega Semiconductor Inc.In Stock: 51215AOZ8809DI-03 Datasheet

Current PartRFQ

AOZ8808DI-03

Alpha & Omega Semiconductor Inc.In Stock: 1439AOZ8808DI-03 Datasheet

DirectRFQ

SP1004U-ULC-04UTG

Littelfuse Inc.In Stock: 105388SP1004U-ULC-04UTG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AOZ8809DI-03 is determined by the following critical parameters:

Primary Substitution Criteria:

• Voltage - Reverse Standoff: 3.3V (Max)
• Voltage - Clamping (Max) @ Ipp: 8V
• Current - Peak Pulse: 12A (100ns)
• Package / Case: 10-UFDFN (2.5x1)
• Unidirectional Channels: 4
• Operating Temperature Range: -40°C ~ 125°C

Identified Substitutes:

1. AOZ8808DI-03 (Alpha & Omega Semiconductor Inc.) — Direct manufacturer equivalent with identical electrical specifications and package. Differs only in packaging format (Tape & Reel vs. Cut Tape) and product status (Active vs. Not For New Designs).

2. SP1004U-ULC-04UTG (Littelfuse Inc.) — Cross-manufacturer substitute with compatible voltage and current ratings. Operates within the same temperature range and package footprint. Differs in device type (Zener vs. Steering) and current pulse specification (2A @ 8/20µs vs. 12A @ 100ns).

Parameter Comparison

Engineering Selection Recommendations

AOZ8808DI-03 is the primary substitute for the AOZ8809DI-03. Both components are manufactured by Alpha & Omega Semiconductor Inc. and share identical electrical specifications, voltage ratings, current handling, and package dimensions. The AOZ8808DI-03 maintains Active product status, ensuring long-term availability and supply chain continuity. Both parts are ROHS3 compliant with MSL 1 rating, supporting equivalent reliability and environmental compliance requirements.

SP1004U-ULC-04UTG serves as a secondary cross-manufacturer alternative. While manufactured by Littelfuse Inc., it operates within compatible voltage and temperature ranges and shares the same 10-DFN package footprint. However, the SP1004U-ULC-04UTG exhibits lower peak pulse current capability (2A vs. 12A) and employs Zener topology rather than steering architecture. This substitute is suitable only for applications where peak pulse current requirements do not exceed 2A and where Zener-type transient suppression is acceptable.

Frequently Asked Questions (FAQ)

Q: Can AOZ8808DI-03 be used as a direct replacement for AOZ8809DI-03?

A: Yes. The AOZ8808DI-03 is a direct equivalent with identical voltage ratings (3.3V standoff, 8V clamp), current specifications (12A @ 100ns), package type (10-UFDFN), and operating temperature range (-40°C to 125°C). The only differences are packaging format (Tape & Reel vs. Cut Tape) and product lifecycle status (Active vs. Not For New Designs).

Q: What are the limitations of SP1004U-ULC-04UTG as a substitute?

A: The SP1004U-ULC-04UTG has reduced peak pulse current capability (2A @ 8/20µs compared to 12A @ 100ns) and uses Zener topology instead of steering architecture. It is suitable only for applications with lower transient current requirements. The slightly higher clamping voltage (9.2V vs. 8V) may also affect circuit performance in voltage-sensitive applications.

Q: Are all substitute parts compatible with the same PCB footprint?

A: AOZ8808DI-03 and AOZ8809DI-03 share identical 10-UFDFN (2.5x1) package dimensions and are footprint-compatible. SP1004U-ULC-04UTG uses a 10-XFDFN (2.5x1.0) package, which has the same external dimensions but may have minor internal lead configuration differences. PCB layout verification is recommended before implementation.

Q: Do all substitute parts meet the same compliance requirements?

A: Yes. AOZ8808DI-03, AOZ8809DI-03, and SP1004U-ULC-04UTG are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. All three parts are REACH unaffected and classified under ECCN EAR99.

Q: Which substitute should be selected for new designs?

A: AOZ8808DI-03 is recommended for new designs due to its Active product status, identical electrical specifications, and manufacturer support continuity. SP1004U-ULC-04UTG may be considered only if application requirements align with its reduced current capability and Zener topology characteristics.