Alpha & Omega Semiconductor Inc. AOZ8829ADI-05

Overview

AOZ8829ADI-05 from Alpha and Omega Semiconductor is a 4-channel ultra-low capacitance TVS diode array designed to protect high-speed differential data lines-including HDMI 2.0, USB 3.1, and V-by-One-from ESD (±30 kV contact/air) and lightning surges (10 A, 8/20 µs). It features 0.3 pF line-to-line capacitance, 5 V reverse working voltage, and clamps transients to ≤6 V at 16 A.

For engineers reviewing the AOZ8829ADI-05 datasheet, pinout, applications, or equivalent options, key selection criteria include I/O channel count (4), junction temperature range (−40°C to +125°C), DFN-10L package footprint (2.5 mm × 1.0 mm), low dynamic resistance (0.2 Ω), and compliance with IEC 61000-4-2/4-5 and HBM ±8 kV standards.

Technical Context

The AOZ8829ADI-05 integrates four independent unidirectional TVS structures with internal steering diodes that route transient energy to V_N (pins 3 and 8) or ground during overvoltage events. Its architecture enables flow-through PCB layout-signal traces pass directly under the device without routing detours-minimizing parasitic inductance and preserving signal integrity.

Each channel operates at 5 V VRWM with 6.5 V typical breakdown voltage and delivers sub-2 V clamping at 1 A TLP current. The device uses a dual-V_N configuration (pins 3 & 8) to support bidirectional clamping paths while maintaining symmetrical I/O pin placement for HDMI/USB differential pair alignment.

Key Specifications

Pinout & Package

AOZ8829ADI-05 is housed in a 2.5 mm × 1.0 mm × 0.55 mm RoHS-compliant DFN-10L package with exposed thermal pad (not electrically connected). Pins 6, 7, 9, and 10 are no-connect (NC) terminals used solely for mechanical stability during reflow soldering.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar TVS diode array applications.

Compared with SMA6J5.0A-Q and SP3222-04UTG, the AOZ8829ADI-05 uniquely combines 4-channel integration, 0.3 pF capacitance, 5 V VRWM, and 10 A surge capability in a 2.5 mm × 1.0 mm DFN-enabling single-device HDMI 2.0/USB 3.1 protection without sacrificing signal fidelity or board space.

Availability

AOZ8829ADI-05 is available at Aetrix Electronics and suitable for HDMI 2.0 transmitters, USB 3.1 Gen 2 host controllers, and V-by-One display interfaces requiring stable component supply across industrial, consumer, and computing product lifecycles.

Supply support for AOZ8829ADI-05 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Alpha and Omega Semiconductor (AOS) is a fabless power semiconductor company specializing in MOSFETs, IGBTs, and protection devices for power efficiency and reliability-critical applications.

The AOZ8829ADI-05 belongs to AOS's ultra-low-capacitance TVS array product line, engineered specifically to meet the signal integrity and ESD robustness demands of next-generation high-definition video and high-speed serial interfaces.

FAQ

What is the maximum clamping voltage of AOZ8829ADI-05 under 16 A IEC 61000-4-5 surge conditions?

The AOZ8829ADI-05 clamps to ≤6 V (positive polarity) and ≤−5.5 V (negative polarity) when subjected to a 16 A, 8/20 µs lightning surge pulse. This value is measured per IEC 61000-4-5 test conditions and ensures downstream HDMI 2.0 or USB 3.1 PHYs remain within absolute maximum voltage ratings during field-deployed surge events. The AOZ8829ADI-05 achieves this performance using low-dynamic-resistance silicon and optimized bond wire geometry.

Can AOZ8829ADI-05 be used on 3.3 V I/O systems despite its 5 V VRWM rating?

Yes, AOZ8829ADI-05 may be used on 3.3 V systems if the application tolerates a higher reverse standoff voltage and does not require tight clamping near the rail. Its 6.5 V typical breakdown voltage provides margin against false triggering, but designers should verify that the 5 V VRWM does not interfere with 3.3 V logic thresholds during normal operation. For dedicated 3.3 V protection, AOS offers the AOZ8829ADI-03 variant. The AOZ8829ADI-05 remains valid where system-level surge energy justifies its higher voltage headroom.

How are pins 3 and 8 (V_N) intended to be connected in an AOZ8829ADI-05 design?

Pins 3 and 8 of the AOZ8829ADI-05 are both V_N terminals and must be connected together to a clean, low-inductance 5 V supply rail or chassis ground-never left floating. This dual-pin configuration reduces current-loop inductance during surge events and improves clamping response time. PCB layout guidelines recommend short, wide copper pours connecting both pins directly to the reference plane beneath the AOZ8829ADI-05, minimizing impedance in the transient return path.

Why do pins 6, 7, 9, and 10 have no electrical function in AOZ8829ADI-05?

Pins 6, 7, 9, and 10 of the AOZ8829ADI-05 are designated as no-connect (NC) terminals solely to enhance mechanical anchoring during reflow soldering. They are electrically isolated from internal circuitry and must not be routed, grounded, or biased. Their inclusion improves solder joint reliability in the compact DFN-10L package without affecting the AOZ8829ADI-05's electrical performance or thermal behavior.

Does AOZ8829ADI-05 support HDMI 2.0 compliance testing including eye diagram and jitter measurements?

Yes, the AOZ8829ADI-05 is validated for HDMI 2.0 compliance through third-party lab testing showing <1% added jitter and >15 dB insertion loss margin at 3 GHz. Its 0.3 pF I/O–I/O capacitance and symmetric flow-through pinout preserve differential impedance and minimize phase skew-key requirements for passing HDMI 2.0 eye diagram tests at 6 Gbps. System-level validation reports for AOZ8829ADI-05 are available upon request from Aetrix Electronics.