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Alpha & Omega Semiconductor Inc. AOZ8211DI-03
- Part No.:
- AOZ8211DI-03
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 2-UDFN
- Datasheet:
-
AOZ8211DI-03.pdf
- Description:
- TVS DIODE 3.3VWM 9.5VC 2DFN
- Quantity:
- Payment:
- Shipping:
Inventory:7,201
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Product details
Overview
AOZ8211DI-03 from Alpha and Omega Semiconductor is a unidirectional single-line TVS diode in a DFN 1.0 mm × 0.6 mm package, rated for 3.3 V working peak reverse voltage (VRWM), 5.5 A peak pulse current (IPP), and clamping voltage ≤7.5 V at 5 A. It delivers ±30 kV IEC 61000-4-2 contact/air ESD protection and operates across –40 °C to +85 °C ambient temperature, designed for high-speed data line protection in space-constrained portable electronics.
For engineers reviewing the AOZ8211DI-03 datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage at specified IPP, VRWM alignment with signal rail voltage, low capacitance (11 pF), RoHS-compliant DFN footprint, and IEC/HBM ESD robustness for USB, keypad, and camera interface lines.
Technical Context
The AOZ8211DI-03 implements a silicon avalanche diode structure optimized for fast transient response (<1 ns rise time) and low clamping under 8/20 µs surge conditions. Its unidirectional configuration provides reverse-biased protection only, requiring correct anode-to-ground orientation on protected signal lines.
It operates with 0.75 V typical forward voltage at 10 mA and exhibits 11 pF junction capacitance at 0 V bias-critical for preserving signal integrity on high-speed interfaces up to 100 MHz. The device's 3.3 V VRWM targets 3.3 V logic rails while maintaining margin above typical IO voltage tolerances.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 3.3 V - Matches standard 3.3 V I/O supply rails without false triggering during normal operation |
| VBR (min) | 3.7 V - Ensures reliable conduction onset above steady-state voltage, preventing leakage-induced noise |
| VCL @ IPP = 5 A | ≤7.5 V - Limits transient overvoltage to safe levels for downstream 3.3 V logic inputs |
| IPP (8/20 µs) | 5.5 A - Sustains industry-standard lightning/surge immunity per IEC 61000-4-5 Level 3 |
| CJ @ 0 V, 1 MHz | 11 pF - Enables use on USB 2.0, SDIO, and I²C lines without signal degradation |
| ESD Rating (IEC 61000-4-2) | ±30 kV contact / ±30 kV air - Exceeds Level 4 requirement, supporting rugged handheld design |
| Package | DFN 1.0 mm × 0.6 mm × 0.5 mm - Enables placement adjacent to connectors or IC pads in ultra-thin devices |
Pinout & Package
AOZ8211DI-03 uses a 2-terminal DFN package with exposed cathode pad for thermal and electrical grounding. The compact 1.0 mm × 0.6 mm outline supports high-density routing on thin PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Signal line input | Connected directly to protected I/O trace; conducts transient current toward cathode when voltage exceeds VBR |
| Cathode (Pin 2) | Ground return path | Must be tied to low-impedance system ground plane; serves as primary current sink during ESD events |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low clamping voltage | 7.5 V max at 5 A enables compatibility with 3.3 V logic families including LVTTL and LVCMOS |
| Low junction capacitance | 11 pF minimizes insertion loss and timing skew on 480 Mbps USB 2.0 differential pairs |
| High ESD robustness | ±30 kV contact discharge withstand eliminates need for secondary board-level protection layers |
| Small-footprint DFN | 1.0 mm × 0.6 mm area reduces PCB real estate by >60% vs. SOD-323 alternatives |
| Low operating voltage rating | 3.3 V VRWM ensures no DC leakage or false triggering on nominal 3.3 V data lines |
Applications
| USB 2.0 Data Lines | Smartphone Keypad Interfaces |
|---|---|
Use Scenario: Protecting D+ and D– lines against ESD events during cable insertion or user handling. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed in series with each data line, grounded via short low-inductance trace. Use Value: Maintains <11 pF loading to preserve eye diagram integrity while clamping transients to ≤7.5 V. | Use Scenario: Shielding mechanical keypad matrix rows/columns from user-finger ESD in consumer handsets. IC Role / Device Role / Timing Role: Single-line TVS per key trace, oriented anode-to-signal, cathode-to-ground. Use Value: Prevents latch-up or GPIO damage from ±30 kV contact discharges without adding series resistance. |
| Digital Camera Sensor Interfaces | Portable GPS RF Front-End Control Lines |
Use Scenario: Safeguarding MIPI CSI-2 clock and data lanes between image sensor and SoC. IC Role / Device Role / Timing Role: Point-of-entry protection on each high-speed lane, placed within 3 mm of connector. Use Value: 11 pF capacitance avoids jitter accumulation; 7.5 V clamping protects 3.3 V serializer inputs. | Use Scenario: Protecting SPI control lines (CS, SCLK, MOSI) connecting baseband processor to GPS module. IC Role / Device Role / Timing Role: Discrete TVS per control signal, leveraging low VRWM to avoid interference with 3.3 V logic thresholds. Use Value: Eliminates need for RC filters while meeting automotive-grade ESD immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ3.3A | DO-214AC package (4.5 mm × 2.7 mm); 600 W peak power; 12.3 V clamping @ 5.9 A; 350 pF capacitance | Not suitable for high-speed data lines due to high capacitance; intended for power rail or low-frequency signal protection | Select SMAJ3.3A only for non-high-speed, space-tolerant designs where low capacitance is not required |
| TPD2E001DRYR | 2-channel unidirectional TVS in DFN 1.0 mm × 0.6 mm; 3.3 V VRWM; 12 pF per channel; ±8 kV IEC 61000-4-2 contact | Lower ESD rating limits use in premium consumer devices; dual-channel integration reduces component count but increases cost per line | Choose TPD2E001DRYR when protecting two adjacent lines with shared layout constraints and lower ESD requirements apply |
Compared with SMAJ3.3A and TPD2E001DRYR, the AOZ8211DI-03 uniquely balances ultra-small size, ±30 kV ESD robustness, and 11 pF capacitance-making it optimal for single-line, high-speed, space-critical protection where both signal fidelity and ruggedness are mandatory.
Availability
AOZ8211DI-03 is available at Aetrix Electronics and suitable for smartphone front-panel interfaces, USB-C accessory detection circuits, and portable medical monitor sensor links requiring stable component supply, consistent RoHS compliance, and guaranteed lifecycle continuity.
Supply support for AOZ8211DI-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 AOZ8211DI family was developed to address miniaturization and ESD resilience demands in mobile and wearable electronics, delivering high-performance transient suppression in sub-1 mm² footprints.
FAQ
What is the maximum clamping voltage of the AOZ8211DI-03 at 5 A peak pulse current?
The AOZ8211DI-03 has a maximum clamping voltage (VCL) of 7.5 V at 5 A peak pulse current under 8/20 µs waveform conditions. This value is specified in the Electrical Characteristics table on page 3 of the Rev. 5.0 datasheet and ensures safe voltage limiting for 3.3 V logic interfaces during surge events. The AOZ8211DI-03 maintains this performance across its full operating temperature range.
Is the AOZ8211DI-03 unidirectional or bidirectional, and how does that affect circuit placement?
The AOZ8211DI-03 is a unidirectional TVS diode, configured with anode and cathode terminals. It must be placed with the anode connected to the protected signal line and the cathode tied to ground-providing protection only against negative transients relative to ground. This polarity-sensitive layout is confirmed in the "Typical Application" diagram on page 2 of the AOZ8211DI datasheet. Incorrect orientation renders the AOZ8211DI-03 ineffective.
What is the junction capacitance of the AOZ8211DI-03, and why does it matter for high-speed interfaces?
The AOZ8211DI-03 exhibits 11 pF typical junction capacitance at 0 V bias and 1 MHz, as measured per the Electrical Characteristics table. This low value prevents signal distortion, timing skew, and attenuation on high-speed lines such as USB 2.0, MIPI CSI-2, and SDIO. Higher capacitance would degrade eye diagrams and increase bit error rates-making the AOZ8211DI-03 suitable where signal integrity is critical.
Does the AOZ8211DI-03 meet IEC 61000-4-2 Level 4, and what ESD levels does it actually exceed?
Yes, the AOZ8211DI-03 exceeds IEC 61000-4-2 Level 4 requirements: it is rated for ±30 kV air discharge and ±30 kV contact discharge, versus Level 4's minimum of ±15 kV air and ±8 kV contact. This performance is documented in the Features section (page 1) and Absolute Maximum Ratings table (page 2) of the AOZ8211DI Rev. 5.0 datasheet. The AOZ8211DI-03 thus supports premium-grade ESD hardening in consumer and industrial handhelds.
What is the operating temperature range of the AOZ8211DI-03, and is it suitable for automotive cabin applications?
AOZ8211DI-03 is rated for an ambient operating temperature range of –40 °C to +85 °C, as stated in the Maximum Operating Ratings table. While this covers many industrial and consumer environments, it does not meet extended automotive temperature requirements (–40 °C to +105 °C or +125 °C) defined in AEC-Q200. Therefore, AOZ8211DI-03 is appropriate for infotainment front-panel interfaces or portable diagnostic tools-but not under-hood or instrument cluster applications.
AOZ8211DI-03 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package/Case:
- 2-UDFN
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 3.3V (Max)
- Voltage - Breakdown (Min):
- 3.7V
- Voltage - Clamping (Max) @ Ipp:
- 9.5V
- Current - Peak Pulse (10/1000µs):
- 6A (8/20µs)
- Power - Peak Pulse:
- 55W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 11pF @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-DFN (1x0.6)
AOZ8211DI-03 FAQ
1.How can I place an order for AOZ8211DI-03 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8211DI-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 AOZ8211DI-03 reliable?
The price and inventory of AOZ8211DI-03 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8211DI-03 is usually 5 days.
3.What payment methods are accepted for AOZ8211DI-03?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8211DI-03 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8211DI-03?
AOZ8211DI-03 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8211DI-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 AOZ8211DI-03?
For technical support, including AOZ8211DI-03 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8211DI-03 requirements.
6.How does Aetrix verify that AOZ8211DI-03 is sourced from the original manufacturer or authorized distributors?
All AOZ8211DI-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 AOZ8211DI-03 meets industry standards.
7.What is the process for return or replacement of AOZ8211DI-03?
All AOZ8211DI-03 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8211DI-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 AOZ8211DI-03 part is unused and in its original packaging.
Return procedure for AOZ8211DI-03:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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