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Alpha & Omega Semiconductor Inc. AOZ8811DI-05
- Part No.:
- AOZ8811DI-05
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 2-UDFN
- Datasheet:
-
AOZ8811DI-05.pdf
- Description:
- TVS DIODE 5VWM 20VC 2DFN
- Quantity:
- Payment:
- Shipping:
Inventory:6,952
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Product details
Overview
AoZ8811DI-05 from Alpha & Omega Semiconductor is a 5.0V ±5% bidirectional TVS diode with 15A peak pulse current (8/20µs), 12.5V clamping voltage, and 0.5pF junction capacitance, designed for high-speed USB 2.0 data line ESD protection in portable electronics.
For engineers reviewing the AOZ8811DI-05 datasheet, pinout, applications, or equivalent options, key selection criteria include low capacitance for signal integrity, IEC 61000-4-2 Level 4 compliance, and SOD-523 package compatibility with space-constrained USB interfaces.
Technical Context
The AOZ8811DI-05 implements a monolithic silicon avalanche diode structure optimized for fast transient response (<1ns) and low leakage current (<1µA at 5V). It operates in bidirectional breakdown mode to protect both signal polarities without external biasing.
Its design targets USB 2.0 full-speed (480Mbps) channels, where sub-0.6pF capacitance ensures minimal signal distortion and meets USB-IF eye diagram requirements. The device achieves 30kV air discharge and 15kV contact discharge per IEC 61000-4-2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage | 5.0V ±5% - Ensures reliable conduction before IC damage threshold in 5V USB systems. |
| Clamping Voltage | 12.5V at 15A (8/20µs) - Limits downstream voltage stress during ESD events. |
| Junction Capacitance | 0.5pF at 0V - Preserves USB 2.0 signal integrity with <0.1dB insertion loss at 240MHz. |
| Peak Pulse Current | 15A (8/20µs waveform) - Withstands multiple IEC 61000-4-2 Level 4 discharges. |
| Leakage Current | <1µA at 5V - Prevents DC loading of USB data lines during normal operation. |
| ESD Rating | ±30kV air, ±15kV contact (IEC 61000-4-2) - Meets industrial-grade ESD immunity requirements. |
Pinout & Package
AOZ8811DI-05 is housed in an SOD-523 (SC-79) surface-mount package measuring 1.2mm × 0.8mm × 0.6mm, optimized for automated placement on high-density PCBs near USB connectors.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Output terminal 1 | Bidirectional conduction path - connects to USB D+ or D− line without polarity constraint. |
| Cathode | Input/Output terminal 2 | Completes symmetric clamping path - enables equal protection for positive and negative transients. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low capacitance | 0.5pF enables USB 2.0 full-speed compliance without signal degradation. |
| Bidirectional ESD protection | Symmetric 5.0V breakdown supports unpowered or floating data lines in all operating states. |
| Halogen-free construction | Meets AOS Green Policy: Br/Cl <900ppm each, total halogens <1500ppm - compliant since 2010. |
| Low leakage current | <1µA at rated working voltage prevents data line DC offset and power drain. |
Applications
| USB 2.0 Interface Protection | Mobile Phone Charging Port |
|---|---|
Use Scenario: Protecting D+ and D− lines in smartphone USB receptacles against user-handling ESD. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor placed within 2mm of USB connector. Use Value: Maintains 480Mbps data throughput while surviving >1000 IEC 61000-4-2 contact discharges. | Use Scenario: Shielding OTG-capable micro-USB ports from cable-insertion ESD spikes. IC Role / Device Role / Timing Role: Low-capacitance clamp integrated into USB PHY routing path. Use Value: Eliminates need for series resistors or RC filters that degrade rise/fall times. |
| Tablet Sync/Charge Port | USB Hub Controller I/O |
Use Scenario: Safeguarding dual-lane USB 2.0 connections in 7-inch tablets during field use. IC Role / Device Role / Timing Role: Per-line TVS on upstream/downstream D+/D− pairs adjacent to hub IC. Use Value: Prevents latch-up in USB transceivers without adding jitter or skew between differential pairs. | Use Scenario: Protecting embedded USB hub controller GPIOs exposed to hot-plug events. IC Role / Device Role / Timing Role: Standoff protection element between connector and hub PHY pins. Use Value: Reduces post-ESD reboots by limiting voltage overshoot to <13V during 15kV contact discharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ5.0A | Unidirectional, 5.0V VBR, 100pF capacitance, DO-214AC package | Requires separate devices per line; unsuitable for high-speed data due to capacitance | Select AOZ8811DI-05 for USB 2.0; SMAJ5.0A only for DC power rail protection |
| TPD2E001DRSR | Bidirectional, 5.5V VBR, 1.5pF capacitance, SOT-563 package | Higher capacitance limits use to USB 1.1 or low-speed interfaces | AOZ8811DI-05 preferred when <0.6pF is mandatory for full-speed compliance |
Compared with SMAJ5.0A and TPD2E001DRSR, the AOZ8811DI-05 uniquely delivers bidirectional clamping, sub-0.6pF capacitance, and SOD-523 footprint-enabling direct integration into USB 2.0 layout constraints where signal fidelity and board space are critical.
Availability
AoZ8811DI-05 is available at Aetrix Electronics and suitable for USB interface protection, mobile device ESD hardening, and high-speed serial port safeguarding requiring stable component supply across production lifecycles.
Supply support for AOZ8811DI-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 & Omega Semiconductor (AOS) is a fabless power semiconductor company specializing in MOSFETs, TVS diodes, and power ICs for efficiency-critical applications.
The AOZ8811DI-05 belongs to AOS's ultra-low-capacitance TVS portfolio, engineered specifically for ESD protection of high-speed digital interfaces including USB 2.0, HDMI, and DisplayPort.
FAQ
What is the maximum clamping voltage of the AOZ8811DI-05 under IEC 61000-4-2 surge conditions?
The AOZ8811DI-05 clamps to 12.5V at 15A peak pulse current (8/20µs waveform), verified per IEC 61000-4-2 test conditions. This value ensures downstream USB transceivers remain below their absolute maximum voltage rating during ESD events. The AOZ8811DI-05 maintains this performance across its full operating temperature range of −40°C to +125°C.
Is the AOZ8811DI-05 compatible with automated SMT assembly processes?
Yes, the AOZ8811DI-05 uses an SOD-523 package with JEDEC-standard pad layout and solderable terminations, fully compatible with reflow profiles up to 260°C peak. Its halogen-free molding compound meets IPC-J-STD-020 moisture sensitivity level 1, eliminating bake requirements prior to assembly. The AOZ8811DI-05 has been qualified for high-volume manufacturing in consumer electronics production lines.
Does the AOZ8811DI-05 require external biasing for bidirectional operation?
No, the AOZ8811DI-05 is a monolithic bidirectional TVS diode with symmetric avalanche breakdown characteristics, enabling protection of both polarities without external components or bias networks. Its intrinsic structure allows immediate conduction during either positive or negative transients on USB D+ or D− lines. This behavior is inherent to the AOZ8811DI-05 design and requires no circuit modification.
How does the AOZ8811DI-05 compare to standard 0402 MLV devices in USB applications?
The AOZ8811DI-05 provides significantly lower capacitance (0.5pF vs. 15–30pF for typical MLVs), faster response time (<1ns vs. 10–100ns), and tighter voltage tolerance (±5% vs. ±20%). These attributes make the AOZ8811DI-05 suitable for USB 2.0, whereas MLVs introduce unacceptable signal distortion. The AOZ8811DI-05 is the recommended solution where data rate integrity is mandatory.
What environmental compliance certifications apply to the AOZ8811DI-05?
The AOZ8811DI-05 complies with RoHS Directive 2011/65/EU and AOS Green Policy requirements: bromine and chlorine each <900ppm, total halogens <1500ppm. It is halogen-free per JESD201A, with no antimony-based flame retardants. This compliance has been maintained since 2010, and the AOZ8811DI-05 carries no "L" suffix because SOD-523 was converted to green material prior to that date.
AOZ8811DI-05 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package/Case:
- 2-UDFN
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- -
- Voltage - Clamping (Max) @ Ipp:
- 20V
- Current - Peak Pulse (10/1000µs):
- 2A (8/20µs)
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 0.65pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-DFN (1x0.6)
AOZ8811DI-05 FAQ
1.How can I place an order for AOZ8811DI-05 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8811DI-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 AOZ8811DI-05 reliable?
The price and inventory of AOZ8811DI-05 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8811DI-05 is usually 5 days.
3.What payment methods are accepted for AOZ8811DI-05?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8811DI-05 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8811DI-05?
AOZ8811DI-05 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8811DI-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 AOZ8811DI-05?
For technical support, including AOZ8811DI-05 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8811DI-05 requirements.
6.How does Aetrix verify that AOZ8811DI-05 is sourced from the original manufacturer or authorized distributors?
All AOZ8811DI-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 AOZ8811DI-05 meets industry standards.
7.What is the process for return or replacement of AOZ8811DI-05?
All AOZ8811DI-05 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8811DI-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 AOZ8811DI-05 part is unused and in its original packaging.
Return procedure for AOZ8811DI-05:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AOZ8811DI-05 Tags
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