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Alpha & Omega Semiconductor Inc. AOZ8906ACI
- Part No.:
- AOZ8906ACI
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- SOT-23-6
- Datasheet:
-
AOZ8906ACI.pdf
- Description:
- TVS DIODE 5VWM 5VC SOT-23-6
- Quantity:
- Payment:
- Shipping:
Inventory:8,056
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Product details
Overview
AOZ8906ACI from Alpha and Omega Semiconductor is a 4-channel unidirectional TVS diode array designed to protect high-speed USB2.0 data lines against ESD and lightning surges. It features ±30kV IEC 61000-4-2 contact/air discharge rating, 1.8 pF I/O-to-GND capacitance, 5.0 V operating voltage, and clamping voltage of 3.5 V at ±16 A (8/20 µs), deployed in notebook computers and peripheral interfaces.
For engineers reviewing the AOZ8906ACI datasheet, pinout, applications, or equivalent options, key selection factors include its SOT23-6L package footprint, four-channel unidirectional protection architecture, low clamping voltage under surge, IEC 61000-4-5 10 A surge rating, and compatibility with 5 V USB2.0 signal integrity requirements.
Technical Context
The AOZ8906ACI integrates eight steering diodes and one TVS element per channel pair to route transients to VCC or GND during ESD events. Its snapback behavior-characterized by 0.9 V hold voltage and 12 mA hold current-enables robust clamping without latch-up under repeated stress.
It operates within -40°C to +125°C junction temperature range and maintains stable 1.8 pF capacitance across 0–5 V bias, ensuring minimal signal distortion on high-speed differential lines like D+/D− in USB2.0 host and downstream ports.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Rating (IEC 61000-4-2) | ±30 kV contact & air discharge - meets Level 4 immunity for end-equipment certification |
| Surge Rating (IEC 61000-4-5) | ±10 A (8/20 µs) - protects against induced lightning transients on data lines |
| I/O-to-GND Capacitance | 1.8 pF typical - preserves USB2.0 signal integrity up to 480 Mbps without timing skew |
| Clamping Voltage | 3.5 V at ±16 A TLP - limits voltage seen by protected ICs below logic-level damage thresholds |
| Reverse Working Voltage | 5.0 V - matches standard USB2.0 VBUS rail, enabling direct placement on D+/D− lines |
| Junction Temperature Range | -40°C to +125°C - supports operation in thermally constrained notebook and set-top box environments |
Pinout & Package
The AOZ8906ACI is housed in a RoHS-compliant, halogen-free SOT23-6L package with 1.3 mm × 2.9 mm footprint and 0.95 mm height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (CH1) | Data line input channel 1 | Protected I/O for first signal pair (e.g., USB D+) |
| 2 (VN) | Negative supply / ground reference | Common cathode connection for all steering diodes; must be tied to system GND |
| 3 (CH2) | Data line input channel 2 | Protected I/O for second signal line (e.g., USB D−) |
| 4 (CH4) | Data line input channel 4 | Third protected I/O (e.g., SD card DAT0) |
| 5 (NC) | No connect | Internally unconnected; must remain floating or grounded per layout guidelines |
| 6 (CH3) | Data line input channel 3 | Fourth protected I/O (e.g., SD card CMD) |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional 4-channel protection | Enables independent clamping of each I/O line to GND only-ideal for 5 V single-supply systems without VCC routing constraints |
| Snapback TVS architecture | Provides low dynamic resistance (0.12 Ω) and stable 0.9 V hold voltage to prevent false triggering during normal operation |
| 1.8 pF I/O-to-GND capacitance | Minimizes insertion loss and reflection on 480 Mbps USB2.0 differential pairs without requiring impedance tuning |
| ±30 kV ESD immunity | Exceeds IEC 61000-4-2 Level 4, eliminating need for secondary board-level ESD mitigation on protected ports |
Applications
| USB2.0 Interface Protection | SD/SIM Card Slot Protection |
|---|---|
Use Scenario: Protecting upstream/downstream USB2.0 ports in notebook computers and docking stations from user-hand ESD and cable-induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS array placed directly at connector, clamping D+/D− transients before reaching USB controller PHY. Use Value: Maintains 480 Mbps signaling integrity with <2 pF loading while surviving ±30 kV contact discharge per IEC 61000-4-2. | Use Scenario: Shielding SDIO and SIM card interface pins (CMD, CLK, DAT0–DAT3) in portable computing and IoT edge devices. IC Role / Device Role / Timing Role: Four-channel transient suppressor routing each data/control line to GND via low-capacitance steering diodes. Use Value: Enables compact 6-pin SOT23-6L placement adjacent to card slot, reducing PCB area vs. discrete diode solutions. |
| Flat Panel Display Interface | Set-Top Box HDMI/USB Hub |
Use Scenario: Guarding LVDS or eDP auxiliary channels (DDC, HPD, backlight control) in monitors and industrial displays. IC Role / Device Role / Timing Role: Low-capacitance transient suppressor on low-voltage control lines operating at ≤5 V with fast edge rates. Use Value: Prevents latch-up or gate oxide damage in display timing controllers during handling and hot-plug events. | Use Scenario: Securing USB hub and front-panel control lines in consumer set-top boxes exposed to frequent user interaction. IC Role / Device Role / Timing Role: Single-package solution protecting four independent 5 V I/O paths including power detect, reset, and status LEDs. Use Value: Reduces BOM count and assembly cost versus four discrete TVS diodes while maintaining full IEC 61000-4-5 10 A surge capability. |
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; 100 W peak pulse power; 70 pF capacitance | Requires four separate devices for equivalent channel count; unsuitable for high-speed data due to high capacitance | Select only when protecting low-frequency GPIO or power rails-not data lines |
| TPD4E05U06DQAR | 4-channel, 5.0 V unidirectional TVS; 1.0 pF capacitance; ±12 kV ESD rating; SON-10 package | Lower ESD rating (±12 kV vs. ±30 kV); smaller 1.0 mm × 1.45 mm footprint; different pinout | Prefer where ultra-low capacitance is critical and ESD threat level is lower than industrial handheld environments |
Compared with SMA6J5.0A and TPD4E05U06DQAR, the AOZ8906ACI uniquely balances ±30 kV ESD robustness, 1.8 pF loading, and SOT23-6L manufacturability-making it optimal for cost-sensitive, high-volume USB2.0 and SD card protection where certification-grade surge immunity is mandatory.
Availability
AOZ8906ACI is available at Aetrix Electronics and suitable for notebook computers, USB2.0 peripheral interfaces, and SD/SIM card slot protection requiring stable component supply and long-term production continuity.
Supply support for AOZ8906ACI 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, TVS diodes, and power ICs for computing, consumer, and industrial markets.
The AOZ8906ACI belongs to AOS's Green TVS Diode Array product line, engineered specifically for high-speed digital interface protection with certified ESD/surge resilience and halogen-free compliance.
FAQ
What is the maximum clamping voltage of the AOZ8906ACI under 10 A IEC 61000-4-5 surge conditions?
The AOZ8906ACI exhibits a maximum clamping voltage of 5.0 V for positive polarity and -3.0 V for negative polarity under 10 A (8/20 µs) IEC 61000-4-5 surge testing. This value is specified in the Electrical Characteristics table on page 3 of the Rev. 2.1 datasheet and ensures protected ICs remain within safe voltage margins during lightning-induced transients. The AOZ8906ACI maintains this performance across its full operating temperature range.
Does the AOZ8906ACI support bidirectional transient suppression?
No, the AOZ8906ACI is explicitly a unidirectional TVS diode array, configured to clamp transients only between I/O pins and ground. Its internal architecture uses steering diodes referenced to VN (pin 2), not a dual-rail configuration. Bidirectional protection would require a different part number such as AOZ8907 series. The AOZ8906ACI datasheet confirms unidirectional operation in both the General Description and Absolute Maximum Ratings sections.
Can the NC pin (pin 5) of the AOZ8906ACI be connected to ground or left floating?
Pin 5 (NC) of the AOZ8906ACI is internally unconnected and must be left floating per the manufacturer's recommendation. AOS does not specify grounding or tying it to any potential, and doing so may compromise ESD performance or cause unintended leakage paths. Layout guidelines in the AOZ8906ACI datasheet advise leaving NC pins unconnected. This applies consistently across all units of the AOZ8906ACI family.
What is the reverse breakdown voltage range for the AOZ8906ACI at 100 µA test current?
The reverse breakdown voltage (VBR) of the AOZ8906ACI is guaranteed between 6.0 V and 11.0 V when tested at IT = 100 µA, as stated in the Electrical Characteristics table (page 3). The typical value is 8.5 V. This range ensures reliable turn-on above the 5.0 V VRWM while avoiding premature conduction during normal 5 V operation. All AOZ8906ACI units meet this specification per AOS characterization data.
Is the AOZ8906ACI qualified for automotive applications per AEC-Q200?
No, the AOZ8906ACI is not AEC-Q200 qualified. Its datasheet specifies an operating junction temperature range of -40°C to +125°C but does not list AEC-Q200 stress testing or qualification status. It is intended for commercial and industrial applications including notebooks, set-top boxes, and displays. For automotive use, engineers should select AOS's AEC-Q200-qualified TVS arrays such as the AOZ8910 series. The AOZ8906ACI itself carries no automotive qualification markings or documentation.
AOZ8906ACI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package/Case:
- SOT-23-6
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 4
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 5V
- Current - Peak Pulse (10/1000µs):
- 10A (8/20µs)
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- USB
- Capacitance @ Frequency:
- 1.8pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
AOZ8906ACI FAQ
1.How can I place an order for AOZ8906ACI through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8906ACI 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 AOZ8906ACI reliable?
The price and inventory of AOZ8906ACI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8906ACI is usually 5 days.
3.What payment methods are accepted for AOZ8906ACI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8906ACI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8906ACI?
AOZ8906ACI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8906ACI 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 AOZ8906ACI?
For technical support, including AOZ8906ACI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8906ACI requirements.
6.How does Aetrix verify that AOZ8906ACI is sourced from the original manufacturer or authorized distributors?
All AOZ8906ACI 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 AOZ8906ACI meets industry standards.
7.What is the process for return or replacement of AOZ8906ACI?
All AOZ8906ACI units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8906ACI, 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 AOZ8906ACI part is unused and in its original packaging.
Return procedure for AOZ8906ACI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AOZ8906ACI Tags
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