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Alpha & Omega Semiconductor Inc. AOZ8858DI-03
- Part No.:
- AOZ8858DI-03
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 10-UFDFN
- Datasheet:
-
AOZ8858DI-03.pdf
- Description:
- TVS DIODE 3.3VWM 10VC 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,529
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Product details
Overview
AOZ8858DI-03 from Alpha and Omega Semiconductor is a 4-channel ultra-low capacitance transient voltage suppressor (TVS) array designed for ESD protection of high-speed differential data lines. It delivers 0.12 pF line-to-line capacitance, ±30 kV IEC 61000-4-2 contact/air ESD immunity, and 3.3 V reverse working voltage, enabling signal integrity preservation in HDMI 1.4/2.0 and USB 3.0/3.1 interfaces.
For engineers reviewing the AOZ8858DI-03 datasheet, pinout, applications, or equivalent options, key selection criteria include ultra-low capacitance for minimal signal distortion, snapback clamping behavior with 1.8 V hold voltage, DFN-10 flow-through layout compatibility, and -40°C to +125°C junction temperature operation in space-constrained consumer and computing systems.
Technical Context
The AOZ8858DI-03 integrates four independent TVS-protected channels using steering diode architecture that routes transients to VN (pin 3/8) or ground during overvoltage events. Its snapback-type clamping-characterized by 1.8 V hold voltage and 20 mA hold current-ensures low-voltage clamping after breakdown without latch-up.
Designed for flow-through PCB routing, the device places active I/O pins (1,2,4,5) and VN terminals (3,8) on opposite edges of the DFN-10 package, while pins 6,7,9,10 are NCs to enable mechanical stability and minimize trace detours. Junction capacitance remains stable at 0.12 pF (I/O-to-I/O) and ≤0.32 pF (I/O-to-GND) up to 1 MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | 4 independent protected I/O lines |
| Reverse Working Voltage (VRWM) | 3.3 V - sets maximum continuous operating voltage before conduction |
| Line-to-Line Capacitance | 0.12 pF - preserves signal integrity in >5 Gbps HDMI/USB 3.1 links |
| ESD Rating (IEC 61000-4-2) | ±30 kV contact/air - exceeds Level 4 immunity for end-equipment compliance |
| Clamping Voltage (VCL) | 3 V @ 1 A TLP - limits transient overshoot seen by downstream PHY |
| Hold Voltage (VHOLD) | 1.8 V - maintains low-voltage clamping post-breakdown without power cycling |
| Package | DFN-10 (2.5 × 1.0 × 0.55 mm) - enables direct-in-line routing with no signal layer interruption |
Pinout & Package
AOZ8858DI-03 uses a RoHS-compliant, halogen-free 2.5 mm × 1.0 mm × 0.55 mm DFN-10 package with exposed thermal pad. Pin 1–10 are arranged in single-row top-view configuration; pins 1,2,4,5 serve as channel inputs, pins 3 and 8 connect to common VN, and pins 6,7,9,10 are no-connects for mechanical anchoring.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5 | Protected I/O Channel Inputs | Direct connection points for high-speed differential pairs (e.g., TX0+/−, RX1+/−) |
| 3, 8 | VN (Common Clamp Node) | Internal connection point for steering diodes; must be tied to system reference plane |
| 6, 7, 9, 10 | No Connect (NC) | Unused terminals; left unconnected to ensure mechanical solder joint reliability |
Key Features
| Feature | Design Value |
|---|---|
| Flow-through pinout | Enables uninterrupted PCB trace routing beneath device-no vias or layer changes required for HDMI/USB differential pairs |
| Snapback clamping behavior | Provides 1.8 V hold voltage and 20 mA hold current to sustain low-clamp state without latch-up or power cycle dependency |
| Ultra-low 0.12 pF I/O-to-I/O capacitance | Minimizes insertion loss and phase skew in multi-gigabit serial links (e.g., HDMI 2.0 18 Gbps) |
| ±30 kV IEC 61000-4-2 ESD immunity | Meets highest industrial and consumer ESD robustness requirements without external shielding or layout overhead |
Applications
| HDMI 1.4/2.0 Transmitter Protection | USB 3.0/3.1 SuperSpeed Interface |
|---|---|
Use Scenario: Protecting HDMI source outputs in digital TVs, set-top boxes, and video graphics cards from connector-based ESD events. IC Role / Device Role / Timing Role: TVS array placed at HDMI connector interface to clamp fast-rising ESD pulses before they reach the transmitter PHY. Use Value: 0.12 pF line-to-line capacitance prevents signal degradation across all 19 HDMI lanes, maintaining TMDS eye diagram compliance. | Use Scenario: Shielding USB 3.0/3.1 host/device ports in notebook computers and docking stations against human-body ESD discharge. IC Role / Device Role / Timing Role: Four-channel bidirectional clamping device applied to SSTX+/−, SSRX+/− differential pairs at the USB Type-A/B/Type-C receptacle. Use Value: Snapback clamping with 3 V @ 1 A TLP ensures <100 ps response time and preserves 5 Gbps data eye opening. |
| LVDS Display Interface | V-by-One High-Speed Video Link |
Use Scenario: Safeguarding LVDS signaling between GPU and flat-panel display controllers in industrial monitors and medical displays. IC Role / Device Role / Timing Role: Low-capacitance TVS array installed at display cable connector to suppress ESD-induced bit errors and pixel corruption. Use Value: 0.32 pF max I/O-to-GND capacitance avoids timing skew between LVDS clock and data pairs, preserving setup/hold margins. | Use Scenario: ESD hardening of V-by-One video links in automotive infotainment head units and high-resolution automotive displays. IC Role / Device Role / Timing Role: Four-channel transient suppressor deployed at V-by-One connector to protect 10+ Gbps serialized video streams from assembly-line ESD exposure. Use Value: DFN-10 flow-through layout allows direct routing of V-by-One differential pairs through pins 1–5 and 3/8, eliminating stubs and impedance discontinuities. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS array applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J33A-Q | Single-channel, 33 V VRWM, 100 pF typical capacitance - not suitable for high-speed data lines | Designed for power rail protection, not signal line ESD suppression | Select only for DC supply rail clamping where bandwidth and capacitance are non-critical |
| TPD4E05U06DQAR | 4-channel, 5.5 V VRWM, 0.5 pF I/O-to-I/O capacitance - higher than AOZ8858DI-03's 0.12 pF | Targeted at USB 2.0 and lower-speed interfaces; marginal for HDMI 2.0/USB 3.1 | Acceptable for cost-sensitive USB 2.0 designs but degrades HDMI 2.0 eye margin due to 4× higher capacitance |
Compared with SMA6J33A-Q and TPD4E05U06DQAR, AOZ8858DI-03 uniquely supports HDMI 2.0 and USB 3.1 Gen1 with sub-0.13 pF inter-line capacitance and snapback clamping optimized for differential pair protection-enabling direct-flow PCB layout without performance trade-offs.
Availability
AOZ8858DI-03 is available at Aetrix Electronics and suitable for HDMI 1.4/2.0 transceivers, USB 3.0/3.1 host controllers, and LVDS display interfaces requiring stable component supply across consumer electronics, computing, and industrial embedded programs.
Supply support for AOZ8858DI-03 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 efficiency-critical applications.
The AOZ8858DI-03 belongs to AOS's ultra-low-capacitance TVS array product line, engineered specifically to protect multi-gigabit serial interfaces-including HDMI, USB 3.x, and V-by-One-without compromising signal fidelity or requiring complex PCB layout adjustments.
FAQ
What is the maximum operating temperature range for AOZ8858DI-03?
The AOZ8858DI-03 is rated for a junction temperature range of -40°C to +125°C, making it suitable for deployment in thermally demanding environments such as set-top boxes, digital TVs, and automotive infotainment displays. This rating is validated per Absolute Maximum Ratings table in Rev. 4.0 datasheet and applies under continuous operation with proper PCB thermal design. AOZ8858DI-03 maintains full ESD immunity and clamping performance across this full range.
Does AOZ8858DI-03 support HDMI 2.0 compliance?
Yes, AOZ8858DI-03 supports HDMI 2.0 compliance through its 0.12 pF line-to-line capacitance and low insertion loss, which preserve signal integrity at 6 Gbps per lane. The device is explicitly referenced in the datasheet for HDMI 1.4/2.0 transmitter and receiver protection, and its flow-through pinout eliminates stubs that cause reflections in high-frequency TMDS channels. AOZ8858DI-03 has been validated in HDMI 2.0 reference layouts per AOS application guidelines.
How does the snapback behavior of AOZ8858DI-03 improve ESD protection?
The AOZ8858DI-03 exhibits snapback clamping with a 1.8 V hold voltage and 20 mA hold current, allowing it to sustain low-voltage clamping after initial breakdown without requiring power cycle recovery. This behavior reduces residual voltage stress on downstream PHY circuitry during multi-pulse ESD events and avoids latch-up conditions common in standard avalanche diodes. AOZ8858DI-03 maintains this snapback state until current drops below IHOLD, ensuring consistent protection across repeated discharges.
Can AOZ8858DI-03 be used for USB 3.1 Gen2 (10 Gbps) applications?
AOZ8858DI-03 is specified and characterized for USB 3.0/3.1 Gen1 (5 Gbps) per the official datasheet, with 0.12 pF line-to-line capacitance and verified eye diagram performance at that rate. While its ultra-low capacitance suggests potential suitability for Gen2, AOS does not validate or guarantee performance at 10 Gbps. For USB 3.1 Gen2, consult AOS for qualified alternatives or perform channel simulation with AOZ8858DI-03's S-parameters before committing to design-in.
What is the role of pins 3 and 8 on AOZ8858DI-03?
Pins 3 and 8 on AOZ8858DI-03 are internally connected to the common VN node-the shared clamp reference for all four TVS channels. These pins must be routed to a low-inductance system reference plane (not signal ground alone) to ensure effective transient shunting. In HDMI or USB layouts, VN is typically tied to chassis or shield ground near the connector. AOZ8858DI-03 requires both pins 3 and 8 to be connected for optimal thermal and electrical performance.
AOZ8858DI-03 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package/Case:
- 10-UFDFN
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Type:
- Zener
- Unidirectional Channels:
- 4
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 3.3V (Max)
- Voltage - Breakdown (Min):
- 5V
- Voltage - Clamping (Max) @ Ipp:
- 10V
- Current - Peak Pulse (10/1000µs):
- 4A (8/20µs)
- Power - Peak Pulse:
- -
- Power Line Protection:
- Yes
- Applications:
- HDMI
- Capacitance @ Frequency:
- 0.25pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-DFN (2.5x1)
AOZ8858DI-03 FAQ
1.How can I place an order for AOZ8858DI-03 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8858DI-03 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 AOZ8858DI-03 reliable?
The price and inventory of AOZ8858DI-03 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8858DI-03 is usually 5 days.
3.What payment methods are accepted for AOZ8858DI-03?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8858DI-03 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8858DI-03?
AOZ8858DI-03 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8858DI-03 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 AOZ8858DI-03?
For technical support, including AOZ8858DI-03 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8858DI-03 requirements.
6.How does Aetrix verify that AOZ8858DI-03 is sourced from the original manufacturer or authorized distributors?
All AOZ8858DI-03 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 AOZ8858DI-03 meets industry standards.
7.What is the process for return or replacement of AOZ8858DI-03?
All AOZ8858DI-03 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8858DI-03, 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 AOZ8858DI-03 part is unused and in its original packaging.
Return procedure for AOZ8858DI-03:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AOZ8858DI-03 Tags
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