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Alpha & Omega Semiconductor Inc. AOZ8231ADI-03
- Part No.:
- AOZ8231ADI-03
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 2-UDFN
- Datasheet:
-
AOZ8231ADI-03.pdf
- Description:
- TVS DIODE 3.3VWM 13.5VC 2DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,280
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Product details
Overview
AOZ8231ADI-03 from Alpha and Omega Semiconductor is a one-line bi-directional TVS diode in a DFN 1.0 mm × 0.6 mm package, rated for 3.3 V working peak reverse voltage (VRWM), clamping ≤13.5 V at 5 A IPP, and ±30 kV IEC 61000-4-2 contact ESD protection. It protects high-speed data lines in portable electronics against transients and electrostatic discharge.
For engineers reviewing the AOZ8231ADI-03 datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage at specified peak current, VRWM alignment with signal rail voltage, low capacitance (<7.0 pF), ultra-small footprint, and compliance with IEC 61000-4-2 Level 4 and HBM ±30 kV.
Technical Context
The AOZ8231ADI-03 operates as a bidirectional transient voltage suppressor across a single signal line, leveraging avalanche breakdown to clamp fast-rising ESD pulses without forward conduction. Its design targets sub-nanosecond response time and minimal parasitic capacitance to preserve signal integrity on high-speed interfaces.
It is characterized at TA = 25 °C with guaranteed clamping voltage up to 13.5 V at 5 A (8/20 µs), reverse leakage <0.1 µA at VRWM, and breakdown voltage of 3.7 V (min) at 1 mA. The device functions within -40 °C to +85 °C ambient and supports junction temperatures up to +125 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 3.3 V - matches 3.3 V I/O rails without false triggering during normal operation |
| VBR (min) | 3.7 V @ 1 mA - ensures reliable turn-on above nominal supply, avoiding premature conduction |
| VCL (max) | 13.5 V @ 5 A - limits downstream IC stress during 8/20 µs lightning surges |
| CJ | 7.0 pF max @ 0 V, 1 MHz - preserves signal rise/fall times on USB, I²C, or touch lines |
| ESD Rating | ±30 kV contact / ±30 kV air per IEC 61000-4-2 - exceeds Level 4 immunity requirements |
| IPP | 6 A @ 8/20 µs - withstands IEC 61000-4-5 surge events on protected lines |
| Package | DFN 1.0 mm × 0.6 mm × 0.5 mm - enables placement adjacent to connectors or IC pads in space-constrained layouts |
Pinout & Package
The AOZ8231ADI-03 uses a 2-terminal DFN 1.0 mm × 0.6 mm package with no internal die attach pad. Both terminals are symmetrical and function identically for bidirectional clamping.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (Pin 1 & Pin 2) | Bidirectional ESD path | Interchangeable terminals; forms low-impedance shunt to ground during either polarity transient |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low capacitance | 7.0 pF max - minimizes signal distortion on 10+ Mbps data lines like USB 2.0 or MIPI D-PHY |
| Low clamping voltage | 13.5 V max @ 5 A - keeps protected ICs below absolute maximum ratings during surge events |
| High ESD robustness | ±30 kV contact discharge - eliminates need for secondary ESD protection in handheld device designs |
| Small-footprint packaging | 1.0 mm × 0.6 mm DFN - reduces PCB area by >50% vs. SOD-323 or SC-70 alternatives |
Applications
| Smartphone Touch Interface | Notebook Keyboard Lines |
|---|---|
Use Scenario: Protects capacitive touch sensor inputs from user-hand ESD during daily handling. IC Role / Device Role / Timing Role: Bidirectional TVS placed directly at FPC connector to shunt transients before reaching touch controller. Use Value: Prevents touch lockup or reset caused by ±30 kV contact discharge, validated per IEC 61000-4-2. | Use Scenario: Shields mechanical keyboard scan lines in ultrabooks from ESD induced by keypresses. IC Role / Device Role / Timing Role: Single-line TVS on each row/column line between keyboard matrix and MCU GPIO. Use Value: Maintains keystroke reliability under repeated ±30 kV air discharge, with <7 pF loading to avoid ghosting. |
| Digital Camera Data Bus | Portable GPS RF Front-End |
Use Scenario: Safeguards high-speed image sensor interface (e.g., MIPI CSI-2) from ESD during lens attachment or SD card insertion. IC Role / Device Role / Timing Role: TVS on differential data pairs adjacent to connector, minimizing skew and impedance discontinuity. Use Value: Enables 1.2 Gbps link stability with clamping voltage <13.5 V and capacitance <7 pF per line. | Use Scenario: Protects GPS antenna feedline and GNSS baseband signal lines from static discharge during outdoor handling. IC Role / Device Role / Timing Role: Low-capacitance TVS on LNA input and digital control lines (I²C, UART) near RF module edge. Use Value: Preserves noise figure and sensitivity while meeting ±30 kV ESD immunity without degrading RF performance. |
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 × 3.2 mm); 3.3 V VRWM; 13.3 V VCL @ 5 A; 150 pF CJ | Not suitable for high-speed data lines due to high capacitance; used in power rail or low-frequency signal protection | Select SMAJ3.3A only when board space is unconstrained and signal bandwidth <1 MHz |
| ESD9X3.3S | SOD-523 package (1.3 mm × 0.8 mm); 3.3 V VRWM; 10.5 V VCL @ 5 A; 12 pF CJ | Higher capacitance than AOZ8231ADI-03; acceptable for USB 1.1 or UART but marginal for USB 2.0 | Choose ESD9X3.3S if slightly larger footprint is acceptable and lower clamping voltage is prioritized over capacitance |
Compared with SMAJ3.3A and ESD9X3.3S, the AOZ8231ADI-03 delivers superior high-speed interface compatibility via its 7.0 pF capacitance and 1.0 mm × 0.6 mm footprint-critical for modern portable designs where layout density and signal integrity are co-constrained.
Availability
AOZ8231ADI-03 is available at Aetrix Electronics and suitable for smartphone touch interfaces, notebook keyboard lines, digital camera data buses, and portable GPS RF front-ends requiring stable component supply and consistent ESD immunity performance.
Supply support for AOZ8231ADI-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 AOZ8231ADI family was developed to deliver ultra-low-capacitance, high-ESD robustness TVS protection in chip-scale packages for space-constrained portable electronics.
FAQ
What is the working peak reverse voltage (VRWM) of the AOZ8231ADI-03?
The AOZ8231ADI-03 has a VRWM of 3.3 V, meaning it remains non-conductive under normal 3.3 V rail operation while reliably triggering during overvoltage transients. This rating ensures compatibility with standard 3.3 V I/O interfaces without leakage or false triggering, and is verified per the manufacturer's Electrical Characteristics table on page 3 of Rev. 6.0 datasheet.
Does the AOZ8231ADI-03 meet IEC 61000-4-2 Level 4 ESD requirements?
Yes, the AOZ8231ADI-03 exceeds IEC 61000-4-2 Level 4 with ±30 kV contact and ±30 kV air discharge ratings. These values are explicitly stated in the Features section and confirmed in the Absolute Maximum Ratings table on page 2 of the Rev. 6.0 datasheet, making it suitable for consumer-grade portable electronics subject to rigorous ESD testing.
What is the maximum clamping voltage of the AOZ8231ADI-03 at 5 A peak pulse current?
The AOZ8231ADI-03 has a maximum clamping voltage (VCL) of 13.5 V at 5 A (8/20 µs waveform), as specified in the Electrical Characteristics table on page 3 of the Rev. 6.0 datasheet. This value defines the upper voltage limit imposed on protected circuitry during surge events and is critical for ensuring downstream ICs remain within safe operating limits.
Is the AOZ8231ADI-03 RoHS compliant and halogen-free?
Yes, the AOZ8231ADI-03 is RoHS compliant and halogen-free, as confirmed in the General Description and Ordering Information sections of the Rev. 6.0 datasheet. It adheres to AOS Green Product standards, with reduced halogen content and full compliance verified per JEDEC J-STD-709 and EU RoHS Directive 2011/65/EU.
What is the typical junction capacitance of the AOZ8231ADI-03 at 0 V bias and 1 MHz?
The AOZ8231ADI-03 exhibits a maximum junction capacitance (CJ) of 7.0 pF at 0 V and 1 MHz, with typical values of 4.4–5.5 pF. This low capacitance is essential for preserving signal integrity on high-speed lines such as USB 2.0 or MIPI, and is measured and guaranteed per the Electrical Characteristics table on page 3 of the Rev. 6.0 datasheet.
AOZ8231ADI-03 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package/Case:
- 2-UDFN
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 3.3V (Max)
- Voltage - Breakdown (Min):
- 3.7V
- Voltage - Clamping (Max) @ Ipp:
- 13.5V
- Current - Peak Pulse (10/1000µs):
- 6A (8/20µs)
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 5.5pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-DFN (1x0.6)
AOZ8231ADI-03 FAQ
1.How can I place an order for AOZ8231ADI-03 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8231ADI-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 AOZ8231ADI-03 reliable?
The price and inventory of AOZ8231ADI-03 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8231ADI-03 is usually 5 days.
3.What payment methods are accepted for AOZ8231ADI-03?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8231ADI-03 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8231ADI-03?
AOZ8231ADI-03 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8231ADI-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 AOZ8231ADI-03?
For technical support, including AOZ8231ADI-03 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8231ADI-03 requirements.
6.How does Aetrix verify that AOZ8231ADI-03 is sourced from the original manufacturer or authorized distributors?
All AOZ8231ADI-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 AOZ8231ADI-03 meets industry standards.
7.What is the process for return or replacement of AOZ8231ADI-03?
All AOZ8231ADI-03 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8231ADI-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 AOZ8231ADI-03 part is unused and in its original packaging.
Return procedure for AOZ8231ADI-03:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AOZ8231ADI-03 Tags
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