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Alpha & Omega Semiconductor Inc. AOZ8211DI-05
- Part No.:
- AOZ8211DI-05
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 2-UDFN
- Datasheet:
-
AOZ8211DI-05.pdf
- Description:
- TVS DIODE 5VWM 10VC 2DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,690
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Product details
Overview
AOZ8211DI-05 from Alpha and Omega Semiconductor is a unidirectional single-line TVS diode designed for ESD and transient protection of 5 V signal lines. It features a working peak reverse voltage of 5.0 V, clamping voltage of 8.0 V at 1 A IPP, 16 pF typical capacitance at 0 V, ±28 kV IEC 61000-4-2 contact ESD rating, and operates from −40 °C to +85 °C in a DFN 1.0 mm × 0.6 mm package. It is used to safeguard high-speed data interfaces in portable electronics against electrostatic discharge.
For engineers reviewing the AOZ8211DI-05 datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage at specified peak current, capacitance impact on signal integrity, working voltage alignment with I/O rail, ESD robustness per IEC 61000-4-2, and ultra-compact DFN footprint for space-constrained layouts.
Technical Context
The AOZ8211DI-05 is a unidirectional silicon avalanche TVS diode optimized for low-capacitance, low-clamping protection of 5 V logic and data lines. Its breakdown voltage is 6.0 V minimum at 1 mA test current, with maximum reverse leakage of 0.1 µA at 5.0 V VRWM and forward voltage ≤0.75 V at 10 mA.
It delivers 50 W peak pulse power (8/20 µs waveform) and handles up to 5.5 A peak pulse current. The device uses a single-anode–single-cathode configuration in a two-terminal DFN package, enabling straightforward series placement between protected line and ground.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 5.0 V - Maximum continuous reverse operating voltage before conduction; matches standard 5 V I/O rails. |
| VBR (min) | 6.0 V @ 1 mA - Ensures reliable turn-on above normal signal swing while avoiding false triggering. |
| VCL @ IPP=1 A | 8.0 V - Clamped voltage seen by protected circuit during 1 A transient; limits stress on downstream ICs. |
| CJ (typ) | 16 pF @ 0 V - Low capacitance preserves signal integrity on high-speed lines such as USB 2.0 or I²C. |
| ESD Contact | ±28 kV - Exceeds IEC 61000-4-2 Level 4 (±8 kV), enabling robust system-level ESD immunity. |
| Package | DFN 1.0 mm × 0.6 mm × 0.5 mm - Ultra-small footprint reduces PCB area use by >50% vs. SOD-323. |
| Operating Temp | −40 °C to +85 °C - Rated for commercial and industrial ambient conditions without derating. |
Pinout & Package
AOZ8211DI-05 is housed in a 2-pin DFN (Dual Flat No-lead) package measuring 1.0 mm × 0.6 mm × 0.5 mm, with exposed thermal pad connected to cathode internally. The package is RoHS-compliant and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Input signal connection | Connected to protected line (e.g., USB D+, HDMI TMDS+); conducts transient current toward cathode when clamped. |
| Cathode (Pin 2) | Ground reference terminal | Internally tied to thermal pad; must be soldered to PCB ground plane for optimal thermal dissipation and low-inductance path. |
Key Features
| Feature | Design Value |
|---|---|
| Low clamping voltage | 8.0 V @ 1 A ensures protected ICs experience minimal overvoltage during ESD events. |
| Ultra-low capacitance | 16 pF enables use on 480 Mbps USB 2.0 or 3.4 Mbps I²C without signal degradation. |
| High ESD robustness | ±28 kV contact discharge exceeds IEC 61000-4-2 Level 4, reducing need for secondary protection. |
| Compact DFN footprint | 1.0 mm × 0.6 mm saves >60% board area versus legacy SOT-23 TVS devices. |
| Low leakage | 0.1 µA max at 5.0 V VRWM prevents DC loading on sensitive analog or low-power I/O. |
Applications
| USB 2.0 Data Lines | HDMI Hot-Plug Detection |
|---|---|
Use Scenario: Protecting D+ and D− lines in portable USB peripherals against user-handling ESD. IC Role / Device Role: Unidirectional TVS clamp placed in series with each data line, referenced to system ground. Use Value: 16 pF capacitance avoids eye-diagram distortion; 8.0 V clamping prevents damage to USB transceivers rated for 5.5 V absolute max. | Use Scenario: Safeguarding HDMI HPD (Hot-Plug Detect) pin from insertion/removal ESD in monitors and set-top boxes. IC Role / Device Role: Single-line TVS between HPD signal and ground, operating at 5 V logic level. Use Value: 5.0 V VRWM aligns precisely with HDMI HPD pull-up voltage; ±28 kV contact rating meets IEC 61000-4-2 compliance requirements. |
| Smartphone Keypad Interface | Industrial Sensor I/O |
Use Scenario: ESD protection for mechanical keypad scan lines in battery-powered handheld devices. IC Role / Device Role: One AOZ8211DI-05 per key line, mounted adjacent to connector or ASIC input pin. Use Value: 1.0 mm × 0.6 mm footprint allows placement directly at board edge; low 0.1 µA leakage extends battery life. | Use Scenario: Transient suppression on 5 V analog sensor output lines in factory automation equipment. IC Role / Device Role: TVS diode installed at sensor module PCB entry point, shunting surges to chassis ground. Use Value: 50 W peak power rating handles repetitive 1 kV/500 A surge pulses per IEC 61000-4-5; −40 °C to +85 °C rating supports wide ambient operation. |
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 | DO-214AC package (4.5 mm × 2.7 mm); 5.0 V VRWM; 14.5 V VCL @ 1 A; 100 pF CJ | Higher capacitance limits use to low-speed lines; larger footprint requires more PCB area | Select SMAJ5.0A only when higher surge current handling (40 A IPP) outweighs size and bandwidth constraints. |
| ESD5Z5.0T1G | SOD-523 package (1.2 mm × 0.8 mm); 5.0 V VRWM; 12.5 V VCL @ 1 A; 45 pF CJ | Higher clamping and capacitance reduce margin for high-speed or low-voltage-tolerant ICs | Choose ESD5Z5.0T1G where cost sensitivity dominates and 45 pF capacitance is acceptable for <10 Mbps signals. |
Compared with SMAJ5.0A and ESD5Z5.0T1G, the AOZ8211DI-05 provides superior high-speed signal compatibility due to its 16 pF capacitance and 8.0 V clamping, while occupying the smallest PCB area-making it optimal for modern compact, high-data-rate designs where layout density and signal fidelity are critical.
Availability
AOZ8211DI-05 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI hot-plug detection circuits, and smartphone keypad ESD hardening requiring stable component supply across production volumes.
Supply support for AOZ8211DI-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 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 deliver ultra-compact, low-capacitance ESD protection for high-speed consumer and industrial interfaces operating at 2.5 V to 24 V rails.
FAQ
What is the clamping voltage of AOZ8211DI-05 at 5 A peak pulse current?
The AOZ8211DI-05 has a maximum clamping voltage of 9.0 V at 5 A peak pulse current (8/20 µs waveform). This value is specified in the Electrical Characteristics table on page 3 of the Rev. 5.0 datasheet and ensures downstream 5 V logic components remain within safe operating limits during high-energy transients.
Is AOZ8211DI-05 unidirectional or bidirectional?
The AOZ8211DI-05 is a unidirectional TVS diode, configured for protection of positive-going transients on 5 V DC-biased lines. Its pinout (Anode to signal, Cathode to ground) and electrical specs-including asymmetric breakdown and clamping behavior-confirm unidirectional operation per the device's "Single Line Unidirection Protection" schematic on page 2.
Does AOZ8211DI-05 meet automotive AEC-Q200 requirements?
No, AOZ8211DI-05 is not qualified to AEC-Q200. Its specified ambient temperature range is −40 °C to +85 °C, and the datasheet does not list AEC-Q200 qualification or extended temperature testing. For automotive applications, consult AOS' AEC-Q200-qualified TVS portfolio such as the AOZ823x series.
What is the marking code for AOZ8211DI-05 on the package?
The AOZ8211DI-05 is marked with the code "J" on the top surface of its DFN package, as shown in the Ordering Information table on page 2 of the Rev. 5.0 datasheet. This laser-marked identifier distinguishes it from other variants (e.g., "Q" for -02, "G" for -03) and enables visual verification during assembly and inspection.
Can AOZ8211DI-05 be used to protect 3.3 V I/O lines?
No-AOZ8211DI-05 is rated for 5.0 V VRWM and is intended for 5 V systems. Using it on 3.3 V lines risks premature conduction due to insufficient voltage margin between VRWM (5.0 V) and the 3.3 V rail, potentially causing leakage or malfunction. For 3.3 V protection, use AOZ8211DI-03 (3.3 V VRWM) instead.
AOZ8211DI-05 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):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 10V
- Current - Peak Pulse (10/1000µs):
- 5.5A (8/20µs)
- Power - Peak Pulse:
- 50W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 16pF @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-DFN (1x0.6)
AOZ8211DI-05 FAQ
1.How can I place an order for AOZ8211DI-05 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8211DI-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 AOZ8211DI-05 reliable?
The price and inventory of AOZ8211DI-05 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8211DI-05 is usually 5 days.
3.What payment methods are accepted for AOZ8211DI-05?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8211DI-05 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8211DI-05?
AOZ8211DI-05 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8211DI-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 AOZ8211DI-05?
For technical support, including AOZ8211DI-05 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8211DI-05 requirements.
6.How does Aetrix verify that AOZ8211DI-05 is sourced from the original manufacturer or authorized distributors?
All AOZ8211DI-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 AOZ8211DI-05 meets industry standards.
7.What is the process for return or replacement of AOZ8211DI-05?
All AOZ8211DI-05 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8211DI-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 AOZ8211DI-05 part is unused and in its original packaging.
Return procedure for AOZ8211DI-05:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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