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Alpha & Omega Semiconductor Inc. AOZ8211DI-02
- Part No.:
- AOZ8211DI-02
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 2-UDFN
- Datasheet:
-
AOZ8211DI-02.pdf
- Description:
- TVS DIODE 2.5VWM 9.5VC 2DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,771
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Product details
Overview
AOZ8211DI-02 from Alpha and Omega Semiconductor is a unidirectional single-line TVS diode designed for ESD protection of 2.5 V signal lines in space-constrained portable electronics. It delivers ±30 kV IEC 61000-4-2 (air/contact) ESD immunity, 5.0 V clamping voltage at 1 A peak pulse current, and 11 pF typical capacitance at 0 V bias - enabling high-speed data line protection in USB, I²C, and touch interfaces.
For engineers reviewing the AOZ8211DI-02 datasheet, pinout, applications, or equivalent options, key selection criteria include working peak reverse voltage (2.5 V), low clamping voltage (7.0 V @ 5 A), ultra-small DFN 1.0 × 0.6 mm footprint, and compatibility with high-speed interfaces requiring sub-12 pF capacitance and <1 µA leakage.
Technical Context
The AOZ8211DI-02 operates as a unidirectional transient voltage suppressor with avalanche breakdown behavior, optimized for low-capacitance protection of 2.5 V logic-level signal paths. Its clamping response is characterized under 8/20 µs surge waveforms, with specified VCL = 5.0 V (IPP = 1 A), 7.0 V (IPP = 5 A), and 9.5 V (IPP = 12 A).
It features a silicon planar junction structure housed in a RoHS-compliant DFN package with exposed cathode pad for thermal dissipation. The device meets MIL-STD-883 HBM ±30 kV and IEC 61000-4-2 Level 4+ (±30 kV air/contact), exceeding standard ESD immunity requirements for consumer portable electronics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Peak Reverse Voltage | 2.5 V - sets maximum continuous DC operating voltage before leakage rises significantly |
| Breakdown Voltage (min) | 2.8 V @ 2 µA - ensures reliable turn-on during transients above nominal rail |
| Clamping Voltage @ 5 A | 7.0 V - limits voltage seen by protected IC during 8/20 µs surge, preserving 2.5 V logic integrity |
| Capacitance @ 0 V | 11 pF - enables use on USB 2.0, I²C, and touch sensor lines without signal integrity degradation |
| Leakage Current (max) | 0.1 µA @ 2.5 V - prevents measurable loading on low-power 2.5 V rails |
| Peak Pulse Power | 50 W @ 8/20 µs - sustains multiple ESD events without degradation |
| ESD Rating (IEC 61000-4-2) | ±30 kV contact / ±30 kV air - exceeds Level 4 requirement for handheld device compliance |
Pinout & Package
AOZ8211DI-02 is housed in an ultra-compact, RoHS-compliant DFN package measuring 1.0 mm × 0.6 mm × 0.5 mm with two terminals and an exposed cathode pad for thermal conduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Signal input connection | Connected to protected line (e.g., USB D+, I²C SDA); conducts transient current toward cathode when reverse-biased |
| Cathode (Pin 2) | Ground return path | Connected to system ground plane; provides low-inductance path for ESD current dissipation |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low capacitance | 11 pF typical - preserves signal rise/fall times on 480 Mbps USB 2.0 and multi-MHz I²C buses |
| Low clamping voltage | 7.0 V @ 5 A - keeps protected 2.5 V ICs within absolute maximum ratings during ESD strikes |
| High ESD robustness | ±30 kV IEC contact discharge - eliminates need for secondary board-level protection in certified designs |
| Small-footprint DFN | 1.0 × 0.6 mm - reduces PCB area by >50% vs. SOD-323 or SC-70 packages, critical for thin mobile devices |
Applications
| USB 2.0 Data Lines | Touchscreen Interface Lines |
|---|---|
Use Scenario: Protecting D+ and D− lines in smartphone USB OTG ports against repeated electrostatic discharge during cable insertion/removal. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed directly at connector, shunting ESD energy to ground before reaching USB PHY. Use Value: 11 pF capacitance avoids USB 2.0 eye diagram distortion; ±30 kV contact rating ensures pass/fail repeatability across 10,000+ plug cycles. | Use Scenario: Shielding capacitive touch controller I/O pins (e.g., TSP I²C bus or reset line) from user finger ESD in handheld tablets. IC Role / Device Role / Timing Role: Point-of-entry protection on each sensitive analog/digital touch signal, placed within 3 mm of connector or sensor pad. Use Value: 2.5 V working voltage matches touch controller I/O rail; 7.0 V clamping prevents latch-up in 2.5 V GPIOs during ±8 kV contact discharges. |
| I²C Bus Lines | Keypad/Button Inputs |
Use Scenario: Safeguarding low-speed I²C SDA/SCL lines connecting PMIC to application processor in wearables with limited board space. IC Role / Device Role / Timing Role: Bidirectional protection not required; unidirectional AOZ8211DI-02 used on pull-up side (VDD-connected) to clamp overvoltage while minimizing capacitance. Use Value: 0.1 µA leakage avoids excessive current draw on battery-powered I²C pull-ups; 11 pF allows reliable operation up to 400 kHz. | Use Scenario: ESD hardening of mechanical keypad scan lines in ruggedized industrial handhelds exposed to frequent operator contact. IC Role / Device Role / Timing Role: Single-line TVS per key line, mounted adjacent to switch pads to minimize trace inductance before transient reaches MCU GPIO. Use Value: 50 W peak power rating withstands repetitive 15 kV air discharges; DFN 1.0 × 0.6 mm fits beneath compact membrane keypad assemblies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ2.5A | DO-214AC package (4.5 × 2.7 mm); 2.5 V VRWM; 12.3 V VCL @ 5 A; 250 pF CJ | Not suitable for high-speed data lines due to high capacitance; intended for power rail or low-frequency signal protection | Select only if board space permits larger package and signal bandwidth < 1 MHz |
| TPD2E001DRYR | 2-channel, 0.65 pF per line, 5.5 V VRWM, 12 V VCL @ 1 A; DFN 1.0 × 0.6 mm | Designed for dual-line protection (e.g., USB D+/D−); higher VRWM unsuitable for 2.5 V rails | Use only for 3.3–5 V interfaces; AOZ8211DI-02 remains optimal for dedicated 2.5 V single-line protection |
Compared with SMAJ2.5A and TPD2E001DRYR, the AOZ8211DI-02 uniquely combines 2.5 V working voltage, 11 pF capacitance, and ±30 kV ESD rating in a 1.0 × 0.6 mm footprint - making it the only viable option for space-constrained, high-speed 2.5 V signal line protection.
Availability
AOZ8211DI-02 is available at Aetrix Electronics and suitable for portable handheld devices, touchscreen interfaces, and USB 2.0 data line protection requiring stable component supply across high-volume consumer electronics programs.
Supply support for AOZ8211DI-02 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 series was developed to address miniaturization and ESD robustness demands in portable electronics, delivering high-performance transient suppression in sub-1 mm² footprints.
FAQ
What is the working peak reverse voltage of the AOZ8211DI-02?
The AOZ8211DI-02 has a working peak reverse voltage (VRWM) of 2.5 V, meaning it can continuously block up to 2.5 V DC or AC peak voltage without significant leakage. This rating makes AOZ8211DI-02 ideal for protecting 2.5 V logic-level signal lines such as those found in USB transceivers, touch controllers, and low-voltage I²C buses.
Does the AOZ8211DI-02 meet IEC 61000-4-2 Level 4 ESD requirements?
Yes, the AOZ8211DI-02 exceeds IEC 61000-4-2 Level 4, achieving ±30 kV air discharge and ±30 kV contact discharge. This performance surpasses the standard's ±15 kV air / ±8 kV contact requirement, ensuring robust ESD immunity for consumer portable devices where AOZ8211DI-02 is deployed at critical I/O points.
What is the clamping voltage of the AOZ8211DI-02 at 5 A peak pulse current?
The AOZ8211DI-02 exhibits a maximum clamping voltage (VCL) of 7.0 V at 5 A peak pulse current (8/20 µs waveform). This value defines the upper voltage limit imposed on the protected line during an ESD event, ensuring downstream 2.5 V ICs remain within safe operating limits - a key specification confirmed in the AOZ8211DI-02 datasheet Rev. 5.0.
Is the AOZ8211DI-02 unidirectional or bidirectional?
The AOZ8211DI-02 is a unidirectional TVS diode, configured for protection of positive-going transients on grounded-signal lines. Its pinout (Anode = signal, Cathode = ground) and electrical characteristics - including forward voltage of 0.75 V and reverse breakdown starting at 2.8 V - confirm unidirectional operation, as documented in the AOZ8211DI-02 datasheet Figure 1 and Electrical Characteristics table.
What package type does the AOZ8211DI-02 use, and what are its dimensions?
The AOZ8211DI-02 uses a RoHS-compliant DFN package measuring 1.0 mm × 0.6 mm × 0.5 mm with two terminals and an exposed cathode pad. This ultra-compact footprint is explicitly stated in the AOZ8211DI-02 ordering information table and mechanical drawings in Rev. 5.0 of the datasheet, enabling placement directly at connectors in space-limited mobile designs.
AOZ8211DI-02 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):
- 2.5V (Max)
- Voltage - Breakdown (Min):
- 2.8V
- Voltage - Clamping (Max) @ Ipp:
- 9.5V
- Current - Peak Pulse (10/1000µs):
- 6A (8/20µs)
- Power - Peak Pulse:
- 50W
- 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-02 FAQ
1.How can I place an order for AOZ8211DI-02 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8211DI-02 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-02 reliable?
The price and inventory of AOZ8211DI-02 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8211DI-02 is usually 5 days.
3.What payment methods are accepted for AOZ8211DI-02?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8211DI-02 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8211DI-02?
AOZ8211DI-02 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8211DI-02 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-02?
For technical support, including AOZ8211DI-02 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8211DI-02 requirements.
6.How does Aetrix verify that AOZ8211DI-02 is sourced from the original manufacturer or authorized distributors?
All AOZ8211DI-02 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-02 meets industry standards.
7.What is the process for return or replacement of AOZ8211DI-02?
All AOZ8211DI-02 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8211DI-02, 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-02 part is unused and in its original packaging.
Return procedure for AOZ8211DI-02:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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