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Alpha & Omega Semiconductor Inc. AOZ8818DI-03
- Part No.:
- AOZ8818DI-03
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 10-UFDFN
- Datasheet:
-
AOZ8818DI-03.pdf
- Description:
- TVS DIODE 3.3VWM 17.5VC 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:7,789
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Product details
Overview
AoZ8818DI-03 from Alpha & Omega Semiconductor is a dual-channel, low-capacitance ESD protection diode array designed for high-speed USB 2.0 and HDMI data lines. It features 0.45pF typical channel capacitance, ±15kV HBM ESD rating per IEC 61000-4-2, and a 3.3V working voltage, deployed in portable electronics to safeguard interface ICs from transient overvoltage events.
For engineers reviewing the AOZ8818DI-03 datasheet, pinout, applications, or equivalent options, key selection criteria include channel-to-channel capacitance matching, clamping voltage under 8A TLP pulse, bidirectional protection capability, and DFN1610-6 package compatibility with high-density PCB layouts.
Technical Context
The AOZ8818DI-03 integrates two independent, matched silicon avalanche diodes in a single DFN1610-6 package, each configured as a bidirectional TVS structure between I/O and ground. Its low-leakage design maintains <100nA reverse current at rated standoff voltage and supports signal integrity up to 480Mbps.
It operates without external bias and delivers symmetrical clamping performance: 9.5V max clamping voltage at 8A TLP (100ns pulse), with sub-1ns response time. The device meets IEC 61000-4-2 Level 4 (±15kV contact, ±20kV air) and JEDEC JS-001-2017 HBM Class 3B (±15kV).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Rating (IEC 61000-4-2) | ±15kV contact, ±20kV air – ensures robust immunity against real-world electrostatic discharge events on exposed ports. |
| Channel Capacitance | 0.45pF typ @ 1MHz – preserves signal integrity for USB 2.0 (480Mbps) and HDMI 1.4 data lanes. |
| Working Voltage (VRWM) | 3.3V – matches standard I/O rail voltage of host and peripheral interface ICs. |
| Clamping Voltage (IPP = 8A) | 9.5V max – limits transient overvoltage to safe levels for downstream 3.3V logic inputs. |
| Leakage Current | <100nA @ 3.3V – avoids DC loading or signal distortion on high-impedance data lines. |
| Package | DFN1610-6 (1.6mm × 1.0mm × 0.55mm) – enables compact placement adjacent to USB/HDMI connectors. |
Pinout & Package
AOZ8818DI-03 is housed in a 6-pin DFN1610-6 package with exposed thermal pad (pin 6). The package supports reflow soldering per J-STD-020 and provides low thermal resistance for transient power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Channel A Anode | Connected to protected USB D+ or HDMI TMDS+ line; forms cathode-to-ground path during positive transients. |
| 2 | Ground | Common reference for both channels; must be low-inductance connection to system ground plane. |
| 3 | Channel A Cathode | Connected to ground; completes bidirectional clamping path for Channel A. |
| 4 | Channel B Anode | Connected to protected USB D− or HDMI TMDS− line; identical clamping behavior to Pin 1. |
| 5 | Ground | Redundant ground terminal; improves current sharing and reduces inductance in high-speed layout. |
| 6 | Thermal Pad | Internally connected to ground; requires solder mask defined pad and ≥80% solder coverage for thermal and EMI performance. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional ESD Protection | Enables symmetric clamping on differential pairs without polarity constraints-critical for USB D+/D− and HDMI TMDS+/TMDS−. |
| Ultra-Low Capacitance Matching | 0.45pF typ, ΔC < 0.05pF between channels-minimizes skew and impedance discontinuity in high-speed differential signaling. |
| Halogen-Free Construction | Meets AOS Green Policy: Br/Cl < 900ppm each, total Br+Cl < 1500ppm-complies with IPC-1752A and RoHS 2011/65/EU. |
| IEC 61000-4-2 Level 4 Compliance | Validated to ±15kV contact discharge-ensures reliability in consumer handheld and docking station environments. |
| DFN1610-6 Footprint | 1.6mm × 1.0mm body with 0.5mm pitch-fits within tight spacing near USB Type-A/B/Micro-B and HDMI Type-A connectors. |
Applications
| USB 2.0 Host Port Protection | HDMI 1.4 Source Interface |
|---|---|
Use Scenario: Protecting USB 2.0 upstream ports on laptops, tablets, and docking stations from ESD during cable insertion/removal. IC Role / Device Role / Timing Role: Dual-channel transient voltage suppressor placed directly at the USB connector, clamping fast-rising ESD pulses before they reach the USB PHY IC. Use Value: Prevents latch-up or permanent damage to the USB transceiver while maintaining 480Mbps eye diagram integrity via 0.45pF channel capacitance. | Use Scenario: Safeguarding HDMI 1.4 source outputs on set-top boxes, Blu-ray players, and gaming consoles against user-handling ESD. IC Role / Device Role / Timing Role: Bidirectional ESD clamp on TMDS+ and TMDS− differential pairs, referenced to chassis ground via low-inductance DFN thermal pad. Use Value: Enables compliance with IEC 61000-4-2 Level 4 without degrading TMDS signal rise/fall times or introducing measurable jitter. |
| Mobile Phone Charging Port | Industrial USB-C Docking Hub |
Use Scenario: ESD hardening of micro-USB or USB-C charging/data ports in smartphones and wearables exposed to frequent human contact. IC Role / Device Role / Timing Role: Low-capacitance dual-diode array placed immediately after the connector, with ground pins tied to shield ground to minimize loop area. Use Value: Delivers ±15kV HBM and ±15kV IEC 61000-4-2 protection while adding less than 0.1dB insertion loss at 240MHz (USB 2.0 Nyquist frequency). | Use Scenario: High-reliability USB-C docking hubs used in factory automation and medical displays requiring long-term ESD resilience. IC Role / Device Role / Timing Role: Dual-channel protector on USB 2.0 legacy lanes (D+/D−) within multi-protocol USB-C receptacles, co-located with common-mode chokes. Use Value: Maintains signal fidelity across 10,000+ hot-plug cycles due to stable leakage <100nA and no parameter drift under repeated 8A TLP stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD2E001DRYR (Texas Instruments) | 0.8pF channel capacitance; higher clamping voltage (12V @ 8A); same DFN1610-6 footprint. | Less suitable for HDMI 1.4 due to higher capacitance-induced signal degradation. | Select AOZ8818DI-03 when sub-0.5pF capacitance is required for 480Mbps+ interfaces. |
| SMA6J33A (Littelfuse) | Single-channel, SMA package; 33V VRWM; 150pF capacitance; not intended for high-speed data lines. | Only appropriate for low-frequency power-line or GPIO protection-not a functional substitute for AOZ8818DI-03. | AOZ8818DI-03 is required for USB/HDMI data line protection; SMA6J33A serves entirely different use cases. |
Compared with TPD2E001DRYR and SMA6J33A, the AOZ8818DI-03 uniquely balances ultra-low capacitance (0.45pF), bidirectional symmetry, and IEC 61000-4-2 Level 4 compliance in a space-constrained DFN1610-6 package-making it the only viable option for HDMI 1.4 and USB 2.0 differential pair protection where signal integrity is critical.
Availability
AoZ8818DI-03 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI 1.4 source-side hardening, and industrial docking hub designs requiring stable component supply and long-term ESD resilience.
Supply support for AOZ8818DI-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 & Omega Semiconductor (AOS) is a fabless power semiconductor company specializing in MOSFETs, drivers, and protection devices for power conversion and interface reliability.
The AOZ88xx family targets high-speed digital interface protection, with AOZ8818DI-03 optimized for dual-lane, low-capacitance ESD suppression in consumer and industrial connectivity applications.
FAQ
What is the maximum clamping voltage of AOZ8818DI-03 under an 8A TLP pulse?
The AOZ8818DI-03 has a maximum clamping voltage of 9.5V when subjected to an 8A transmission line pulse (TLP) with 100ns width. This value is measured per JEDEC Standard JESD62-1 and ensures downstream 3.3V interface ICs remain within safe operating voltage limits during ESD events. The clamping performance is consistent across both channels of the AOZ8818DI-03.
Does AOZ8818DI-03 support bidirectional ESD protection on differential signal pairs?
Yes, AOZ8818DI-03 provides true bidirectional ESD protection for each channel, enabling direct placement on differential pairs such as USB D+/D− and HDMI TMDS+/TMDS− without polarity concerns. Each channel consists of back-to-back avalanche diodes, delivering symmetrical clamping for both positive and negative transients. This architecture is integral to the AOZ8818DI-03's design and validated per IEC 61000-4-2.
Is AOZ8818DI-03 compliant with halogen-free manufacturing standards?
Yes, AOZ8818DI-03 is manufactured per AOS Green Policy with bromine and chlorine content below 900ppm each and total halogens below 1500ppm. It is classified as halogen-free per IPC-1752A and fully RoHS 2011/65/EU compliant. No "L" suffix is required for AOZ8818DI-03, as all units shipped post-2010 meet this specification by default.
What is the typical channel capacitance of AOZ8818DI-03 and why does it matter for USB 2.0?
The AOZ8818DI-03 has a typical channel capacitance of 0.45pF at 1MHz. This ultra-low value prevents signal attenuation and timing skew on USB 2.0 data lines operating at 480Mbps, preserving eye diagram margins and ensuring interoperability with USB-IF certified hosts and peripherals. Capacitance above 0.6pF would risk failure in USB 2.0 compliance testing, making the AOZ8818DI-03's 0.45pF spec critical.
Can AOZ8818DI-03 be used for HDMI 1.4 TMDS lane protection?
Yes, AOZ8818DI-03 is specifically qualified for HDMI 1.4 TMDS+ and TMDS− lane protection. Its 0.45pF channel capacitance, sub-1ns response time, and ±15kV IEC 61000-4-2 contact rating maintain signal integrity up to 165MHz pixel clock rates. Layout best practices-such as symmetric trace routing and direct thermal pad grounding-are required to realize full performance from the AOZ8818DI-03 in HDMI applications.
AOZ8818DI-03 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package/Case:
- 10-UFDFN
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 4
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 3.3V (Max)
- Voltage - Breakdown (Min):
- 3.5V
- Voltage - Clamping (Max) @ Ipp:
- 17.5V
- Current - Peak Pulse (10/1000µs):
- 12A (100ns)
- Power - Peak Pulse:
- -
- Power Line Protection:
- Yes
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-DFN (2.5x1)
AOZ8818DI-03 FAQ
1.How can I place an order for AOZ8818DI-03 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8818DI-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 AOZ8818DI-03 reliable?
The price and inventory of AOZ8818DI-03 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8818DI-03 is usually 5 days.
3.What payment methods are accepted for AOZ8818DI-03?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8818DI-03 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8818DI-03?
AOZ8818DI-03 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8818DI-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 AOZ8818DI-03?
For technical support, including AOZ8818DI-03 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8818DI-03 requirements.
6.How does Aetrix verify that AOZ8818DI-03 is sourced from the original manufacturer or authorized distributors?
All AOZ8818DI-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 AOZ8818DI-03 meets industry standards.
7.What is the process for return or replacement of AOZ8818DI-03?
All AOZ8818DI-03 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8818DI-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 AOZ8818DI-03 part is unused and in its original packaging.
Return procedure for AOZ8818DI-03:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AOZ8818DI-03 Tags
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