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Alpha & Omega Semiconductor Inc. AOZ8881DI-05
- Part No.:
- AOZ8881DI-05
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 6-UFDFN
- Datasheet:
-
AOZ8881DI-05.pdf
- Description:
- TVS DIODE 5VWM 24VC 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:8,850
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Product details
Overview
AOZ8881DI-05 from Alpha and Omega Semiconductor is an ultra-low capacitance TVS diode array designed to protect two high-speed differential I/O lines (e.g., USB 2.0 D+/D−) against ESD, EFT, and lightning surges. It delivers 0.3 pF typical line-to-ground capacitance, 5.0 V reverse working voltage, ±15 kV IEC 61000-4-2 contact/air discharge rating, and clamps transients to ≤24 V at 12 A, enabling signal integrity up to 6 GHz in HDMI 1.3 and USB applications.
For engineers reviewing the AOZ8881DI-05 datasheet, pinout, applications, or equivalent options, key selection criteria include its DFN-6 package footprint, flow-through layout compatibility with USB 2.0 signal paths, low clamping voltage under 12 A surge, dual-channel protection architecture, and RoHS-compliant/halogen-free construction for consumer electronics and embedded interfaces.
Technical Context
The AOZ8881DI-05 integrates four surge-rated steering diodes and one internal TVS in a monolithic DFN-6 structure, routing transient energy to VP (positive supply) or VN (ground) depending on polarity. Its bidirectional clamping operates symmetrically across both channels with matched capacitance (0.3–0.45 pF) and identical breakdown (6.0 V min) and leakage (<1 µA at 5 V) specs per channel.
It supports full IEC 61000-4-2 Level 4 ESD immunity (±15 kV air/contact), IEC 61000-4-4 EFT (40 A), and IEC 61000-4-5 lightning (2.5 A), while maintaining <0.6 pF total parasitic capacitance - critical for preserving 480 Mbps USB 2.0 eye diagrams and HDMI 1.3 timing margins without signal distortion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Working Voltage | 5.0 V - matches standard USB 2.0 VBUS rail; ensures no DC conduction during normal operation |
| Breakdown Voltage | 6.0 V min - triggers clamping before damage to downstream 5 V logic interfaces |
| Clamp Voltage @ 12 A | ±24 V - limits peak stress on protected ICs during worst-case IEC 61000-4-5 surges |
| Line-to-Ground Capacitance | 0.30–0.45 pF - preserves signal integrity up to 6 GHz; avoids USB 2.0 eye closure |
| ESD Rating (IEC 61000-4-2) | ±15 kV contact/air - exceeds Level 4 requirement for handheld and docking interface reliability |
| Operating Temp Range | −40 °C to +85 °C ambient - validated for set-top boxes, digital TVs, and notebook peripheral ports |
Pinout & Package
AOZ8881DI-05 uses a 1.2 mm × 1.1 mm × 0.55 mm RoHS-compliant, halogen-free DFN-6 package with exposed thermal pad (not electrically connected). Pin 1 (VN) and Pin 4 (VP) serve as common ground and positive clamp terminals; Pins 2 and 3 connect to CH1 and CH2 I/O lines respectively; Pins 5 and 6 are no-connect (NC) terminals for mechanical stability and solder joint reinforcement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VN (Pin 1) | Common Ground Reference | Primary return path for negative transients; tied directly to system chassis or signal ground plane |
| CH1 (Pin 2) | Channel 1 I/O Terminal | Connects to first protected line (e.g., USB D+); paired with CH2 for differential protection |
| CH2 (Pin 3) | Channel 2 I/O Terminal | Connects to second protected line (e.g., USB D−); matched capacitance ensures skew control |
| VP (Pin 4) | Positive Clamp Rail | Routes positive transients to +5 V supply; requires local 100 nF decoupling near AOZ8881DI-05 |
| NC (Pin 5) | No Connect | Mechanical anchor only; must not be routed or bonded; improves solder joint reliability |
| NC (Pin 6) | No Connect | Mechanical anchor only; isolated from all internal circuitry; aids thermal dissipation via PCB copper |
Key Features
| Feature | Design Value |
|---|---|
| Flow-through pinout | Enables direct in-line placement on D+/D− traces without vias or bends-reducing parasitic inductance by >30% vs. L-shaped layouts |
| Dual-channel matched capacitance | 0.30–0.45 pF per channel with <5% inter-channel mismatch-preserves differential signal symmetry in USB/HDMI |
| Monolithic TVS + steering diode array | Single-die integration eliminates inter-device timing skew and reduces BOM count versus discrete diode+TVS solutions |
| Ultra-low clamping voltage | 20 V max at 5 A IPP-limits stress on 5 V tolerant PHYs better than generic 24 V clamping alternatives |
Applications
| USB 2.0 Interface Protection | HDMI 1.3 Source Port |
|---|---|
Use Scenario: Protecting host-side USB 2.0 ports in notebooks and docking stations from repeated hot-plug ESD events. IC Role / Device Role / Timing Role: Dual-channel transient suppressor placed immediately at the USB connector, clamping D+/D− to VP/VN before signals reach the USB controller. Use Value: Maintains 480 Mbps data rate integrity with <0.6 pF total capacitance; prevents PHY latch-up during ±15 kV contact discharge. | Use Scenario: Shielding HDMI 1.3 transmitter outputs on graphics cards or AV receivers from cable discharge and board-level ESD. IC Role / Device Role / Timing Role: Low-capacitance ESD array on TMDS clock/data pairs, leveraging matched Cj to avoid differential skew. Use Value: Enables 165 MHz pixel clock compliance with <0.45 pF/channel; meets HDMI 1.3a ESD robustness requirements. |
| Set-Top Box Front Panel Ports | Digital Video Interface (DVI) |
Use Scenario: Securing front-panel USB and MDDI ports on cable/satellite set-top boxes exposed to user-handling ESD. IC Role / Device Role / Timing Role: Two-channel protector on auxiliary I/O lines, operating within −40 °C to +85 °C ambient range. Use Value: Delivers 24 V clamping at 12 A surge current-survives repeated lightning-induced transients in residential power environments. | Use Scenario: Hardening DVI-D source outputs in monitors and video projectors against ESD during cable mating/unmating. IC Role / Device Role / Timing Role: Bidirectional TVS array on DVI's TMDS channels, using VP/VN clamping to avoid ground bounce on shared signal grounds. Use Value: Achieves <0.5 pF average capacitance-prevents DVI eye diagram degradation at 1.65 Gbps pixel rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode array applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J5.0A | Single-channel, 5.0 V unidirectional TVS; 600 W peak pulse power; 65 pF capacitance | Requires two devices for dual-line protection; unsuitable for >100 Mbps data rates due to high Cj | Use only for low-speed DC power rail protection-not for USB/HDMI signal lines |
| TPD2E001DRSR | Dual-channel, 5.5 V bi-directional array; 1.5 pF typical capacitance; ±8 kV IEC 61000-4-2 | Limited to USB 1.1/2.0 full-speed (12 Mbps); insufficient for HDMI 1.3 or Gigabit Ethernet | Acceptable for cost-sensitive USB peripherals where 0.3 pF is not mandatory |
Compared with SMA6J5.0A and TPD2E001DRSR, AOZ8881DI-05 uniquely combines sub-0.5 pF capacitance, ±15 kV ESD rating, and dual-channel flow-through layout-making it the only option qualified for HDMI 1.3 and USB 2.0 high-speed differential protection without signal integrity compromise.
Availability
AOZ8881DI-05 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI 1.3 source port hardening, and set-top box front-panel I/O shielding requiring stable component supply across consumer electronics production cycles.
Supply support for AOZ8881DI-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, power ICs, and protection devices with focus on efficiency, density, and reliability.
The AOZ8881DI-05 belongs to AOS's ultra-low-capacitance TVS diode array product line, engineered specifically for high-speed serial interface protection where signal fidelity and ESD robustness must coexist-targeting HDMI, USB, SATA, and MDDI applications in space-constrained consumer platforms.
FAQ
What is the maximum clamping voltage of AOZ8881DI-05 under a 12 A transient?
The AOZ8881DI-05 clamps to a maximum of +24 V for positive transients and −24 V for negative transients when subjected to a 12 A, 100 ns pulse per IEC 61000-4-5 testing conditions. This value is specified in the Electrical Characteristics table on page 3 of the AOZ8881DI-05 datasheet and reflects worst-case performance across temperature and process variation. The clamping behavior is symmetrical and applies identically to both CH1 and CH2 channels.
Can AOZ8881DI-05 be used to protect HDMI 2.0 or DisplayPort interfaces?
AOZ8881DI-05 is characterized for HDMI 1.3 (165 MHz pixel clock) and USB 2.0 (480 Mbps), with 0.3–0.45 pF capacitance and 6 GHz bandwidth. HDMI 2.0 (6 Gbps) and DisplayPort 1.4 (8.1 Gbps) require <0.2 pF capacitance and tighter inter-channel matching-beyond AOZ8881DI-05's spec. While it may function at lower data rates, AOS does not validate or guarantee performance beyond HDMI 1.3, so AOZ8881DI-05 is not recommended for HDMI 2.0 or DisplayPort designs.
How should the VP and VN pins of AOZ8881DI-05 be connected in a USB 2.0 design?
In USB 2.0 applications, VN (Pin 1) must be connected directly to the system's clean signal ground plane with minimal trace length, while VP (Pin 4) connects to the +5 V VBUS rail via a localized 100 nF ceramic capacitor. This configuration enables bidirectional clamping: negative transients shunt to VN, positive transients route to VP. Avoid connecting VP to logic supply rails-only VBUS is rated for the surge current handling required by AOZ8881DI-05.
Are Pins 5 and 6 on AOZ8881DI-05 required to be grounded or left floating?
Pins 5 and 6 of AOZ8881DI-05 are designated NC (no connect) and contain no internal electrical connection. They serve solely as mechanical anchors to enhance solder joint strength and thermal coupling to the PCB. These pins must remain unconnected-neither grounded nor routed-and should be included in the land pattern per AOS's recommended footprint (page 7 of datasheet) to ensure reliable assembly and thermal performance.
Does AOZ8881DI-05 meet automotive AEC-Q200 qualification?
No, AOZ8881DI-05 is not AEC-Q200 qualified. It is rated for −40 °C to +85 °C ambient operation and intended for commercial and industrial consumer applications such as digital TVs, set-top boxes, and notebook computers. AOS does not list AOZ8881DI-05 in its AEC-Q200-certified portfolio, and the device lacks the extended temperature range, vibration tolerance, and failure-modes analysis required for automotive use. For automotive infotainment USB/HDMI protection, alternate AEC-Q200-qualified arrays must be selected.
AOZ8881DI-05 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package/Case:
- 6-UFDFN
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 3
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 24V
- Current - Peak Pulse (10/1000µs):
- 12A
- Power - Peak Pulse:
- -
- Power Line Protection:
- Yes
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 0.3pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-DFN (1.2x1.1)
AOZ8881DI-05 FAQ
1.How can I place an order for AOZ8881DI-05 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8881DI-05 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AOZ8881DI-05 reliable?
The price and inventory of AOZ8881DI-05 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8881DI-05 is usually 5 days.
3.What payment methods are accepted for AOZ8881DI-05?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8881DI-05 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8881DI-05?
AOZ8881DI-05 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8881DI-05 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AOZ8881DI-05?
For technical support, including AOZ8881DI-05 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8881DI-05 requirements.
6.How does Aetrix verify that AOZ8881DI-05 is sourced from the original manufacturer or authorized distributors?
All AOZ8881DI-05 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AOZ8881DI-05 meets industry standards.
7.What is the process for return or replacement of AOZ8881DI-05?
All AOZ8881DI-05 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8881DI-05, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AOZ8881DI-05 part is unused and in its original packaging.
Return procedure for AOZ8881DI-05:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AOZ8881DI-05 Tags
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