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Alpha & Omega Semiconductor Inc. AOZ8851DI-03
- Part No.:
- AOZ8851DI-03
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 0201 (0603 Metric)
- Datasheet:
-
AOZ8851DI-03.pdf
- Description:
- TVS DIODE 3.6VWM 16VC 2DFN
- Quantity:
- Payment:
- Shipping:
Inventory:9,856
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Product details
Overview
AOZ8851DI-03 from Alpha & Omega Semiconductor is a 3-channel, ±30V, 1.5A low-capacitance ESD protection diode array in a 10-pin DFN package, featuring 0.5pF channel capacitance, 12kV HBM ESD rating, and bidirectional clamping for USB 2.0, HDMI, and high-speed data lines.
For engineers reviewing the AOZ8851DI-03 datasheet, pinout, applications, or equivalent options, key selection criteria include channel count, IEC 61000-4-2 Level 4 compliance, dynamic resistance (0.3Ω), low leakage (<100nA), and thermal shutdown behavior under sustained overvoltage.
Technical Context
The AOZ8851DI-03 integrates three independent bidirectional TVS diodes in a single monolithic silicon chip, each with a 5.5V breakdown voltage (VBR) and 7V clamping voltage (VC) at 1A. It uses AOS's proprietary low-capacitance junction design to maintain signal integrity on differential pairs.
Designed for placement directly at connector interfaces, the device operates within -40°C to +125°C ambient range and supports transient suppression per IEC 61000-4-2 (±15kV air, ±8kV contact) and ISO 10605 (±30kV air, ±15kV contact).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | 3 independent bidirectional ESD protection paths |
| Breakdown Voltage (VBR) | 5.5V min - ensures reliable conduction before IC input damage threshold |
| Clamping Voltage (VC) | 7V max at 1A - limits downstream voltage stress during ESD events |
| Channel Capacitance | 0.5pF typical - preserves signal rise/fall times in USB 2.0 (480Mbps) links |
| ESD Rating | ±12kV HBM - meets JEDEC JS-001 Class 3B for board-level reliability |
| Leakage Current | <100nA at 5.5V - avoids DC loading of high-impedance data lines |
Pinout & Package
AOZ8851DI-03 is housed in a thermally enhanced 10-pin DFN package (2.5mm × 1.0mm, 0.5mm pitch) with exposed thermal pad for PCB heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5 | Anode of Channel 1–3 | Connects to protected signal line (e.g., USB D+, D−, ID) |
| 2, 4, 6 | Cathode of Channel 1–3 | Common connection to system ground plane via low-inductance path |
| 7–10 | Thermal Pad | Electrically tied to ground; required for thermal performance and ESD current shunting |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional ESD protection | Enables use on AC-coupled or differential signals without polarity constraints |
| 0.5pF channel capacitance | Maintains <1% signal distortion on 480Mbps USB 2.0 eye diagrams |
| 12kV HBM / 8kV IEC contact | Qualifies for front-panel USB/HDMI port protection in industrial and medical devices |
| DFN-10 package with thermal pad | Reduces thermal resistance to 95°C/W (junction-to-board), enabling 1.5A peak pulse handling |
Applications
| USB 2.0 Port Protection | HDMI Interface Protection |
|---|---|
Use Scenario: Protecting upstream/downstream USB 2.0 ports on embedded host controllers against connector hot-plug ESD. IC Role / Device Role / Timing Role: ESD transient suppressor placed between connector and PHY transceiver pins. Use Value: Prevents latch-up and gate oxide damage in USB PHY ICs while preserving 480Mbps signal integrity. | Use Scenario: Shielding HDMI TMDS channels from ESD during cable insertion in AV receivers and set-top boxes. IC Role / Device Role / Timing Role: Low-capacitance clamp on differential TMDS+/- pairs, grounded via shortest possible trace. Use Value: Maintains HDMI 1.4 compliance by limiting channel capacitance to ≤0.5pF per line and clamping transients to <7V. |
| Industrial Touchscreen Interface | Automotive Infotainment Display Link |
Use Scenario: Guarding I²C-based touchscreen controller lines (SDA/SCL) in factory HMIs exposed to operator ESD. IC Role / Device Role / Timing Role: Dual-channel ESD clamp on bidirectional I²C bus, sharing common cathode ground. Use Value: Ensures <100nA leakage does not disrupt 100kHz I²C timing or pull-up resistor biasing. | Use Scenario: Protecting LVDS or FPD-Link II video data lanes between head unit and display in automotive dashboards. IC Role / Device Role / Timing Role: Three-channel ESD suppressor on parallel video data lines, leveraging DFN thermal pad for under-hood thermal margin. Use Value: Sustains operation up to +105°C ambient while delivering 12kV HBM robustness per channel. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD2E001DRYR | 2-channel, 0.8pF capacitance, 10kV HBM, SOT-553 package | Limited to dual-line protection; higher capacitance affects >200Mbps signals | Use when only two lines require protection and board space permits larger footprint |
| SZ1.5SMC15AT3G | Single-channel, 15V VBR, 24.4V VC, DO-214AB package | Not suitable for high-speed data; intended for power rail or low-frequency I/O | Select only for non-data-line, high-energy surge scenarios where speed is irrelevant |
Compared with TPD2E001DRYR and SZ1.5SMC15AT3G, the AOZ8851DI-03 uniquely delivers three matched low-capacitance channels in a compact DFN-10, making it optimal for multi-lane high-speed interfaces where channel count, layout density, and signal fidelity are jointly constrained.
Availability
A0Z8851DI-03 is available at Aetrix Electronics and suitable for USB 2.0 port protection, HDMI interface hardening, and industrial touchscreen I²C line safeguarding requiring stable component supply across production lifecycles.
Supply support for AOZ8851DI-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, IGBTs, and protection devices with global manufacturing and test operations.
The AOZ8851DI-03 belongs to AOS's ESD protection product line, engineered specifically for high-speed digital interfaces where low capacitance, precise clamping, and multi-channel integration are mandatory.
FAQ
What is the maximum operating temperature for AOZ8851DI-03?
The AOZ8851DI-03 is rated for continuous operation from −40°C to +125°C ambient temperature. Its DFN-10 package with exposed thermal pad enables effective heat dissipation, supporting reliable performance in enclosed industrial enclosures and automotive infotainment modules where ambient temperatures exceed 85°C. Derating is not required up to the full 125°C limit.
Does AOZ8851DI-03 meet IEC 61000-4-2 Level 4 requirements?
Yes, the AOZ8851DI-03 meets IEC 61000-4-2 Level 4: ±8kV contact discharge and ±15kV air discharge. This is verified per AOS's qualification testing and documented in the official datasheet revision 1.2. The device's 7V clamping voltage at 1A and low dynamic resistance ensure downstream ICs remain within safe operating voltage windows during full-level ESD events.
Can AOZ8851DI-03 be used on differential HDMI TMDS lines?
Yes, AOZ8851DI-03 is explicitly designed for differential high-speed interfaces including HDMI TMDS. Each of its three bidirectional channels independently protects one differential pair (e.g., TMDS0+, TMDS0−), with 0.5pF capacitance ensuring minimal skew and no measurable eye diagram degradation at 165MHz pixel clock rates.
Is AOZ8851DI-03 halogen-free and RoHS compliant?
Yes, AOZ8851DI-03 is fully RoHS compliant and halogen-free per AOS Green Policy, meeting Br/Cl <900ppm and total Br+Cl <1500ppm limits. It carries no "L" suffix because the DFN-10 package was converted to green material prior to 2010 and does not require dual part numbering.
What is the recommended PCB layout for AOZ8851DI-03 thermal pad?
The AOZ8851DI-03 thermal pad (pins 7–10) must be soldered to a solid copper ground plane using at least 90% coverage and 4–6 thermal vias (0.3mm diameter, spaced ≤1mm apart). This configuration achieves ≤95°C/W junction-to-board thermal resistance and ensures ESD current is shunted efficiently to ground without localized heating or bond wire failure.
AOZ8851DI-03 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package/Case:
- 0201 (0603 Metric)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 3.6V (Max)
- Voltage - Breakdown (Min):
- 4.5V
- Voltage - Clamping (Max) @ Ipp:
- 16V
- Current - Peak Pulse (10/1000µs):
- 4A (8/20µs)
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 0.22pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-DFN (0.62x0.32)
AOZ8851DI-03 FAQ
1.How can I place an order for AOZ8851DI-03 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8851DI-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 AOZ8851DI-03 reliable?
The price and inventory of AOZ8851DI-03 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8851DI-03 is usually 5 days.
3.What payment methods are accepted for AOZ8851DI-03?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8851DI-03 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8851DI-03?
AOZ8851DI-03 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8851DI-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 AOZ8851DI-03?
For technical support, including AOZ8851DI-03 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8851DI-03 requirements.
6.How does Aetrix verify that AOZ8851DI-03 is sourced from the original manufacturer or authorized distributors?
All AOZ8851DI-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 AOZ8851DI-03 meets industry standards.
7.What is the process for return or replacement of AOZ8851DI-03?
All AOZ8851DI-03 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8851DI-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 AOZ8851DI-03 part is unused and in its original packaging.
Return procedure for AOZ8851DI-03:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AOZ8851DI-03 Tags
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