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Alpha & Omega Semiconductor Inc. AOZ8302CI-05
- Part No.:
- AOZ8302CI-05
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AOZ8302CI-05.pdf
- Description:
- TVS DIODE 5VWM 14VC SOT23A-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,279
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Product details
Overview
AoZ8302CI-05 from Alpha & Omega Semiconductor is a 5.0V bidirectional TVS diode with 30A peak pulse current (IPP), 12.5V clamping voltage (VC), and 0.5pF typical junction capacitance, designed for high-speed USB 2.0 data line ESD protection in portable electronics.
For engineers reviewing the AOZ8302CI-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 AOZ8302CI-05 implements a monolithic silicon avalanche diode structure optimized for fast transient response to ESD events. It achieves <1ns response time and supports ±15kV air/±8kV contact discharge per IEC 61000-4-2.
Its low 0.5pF capacitance minimizes signal distortion on 480Mbps USB 2.0 differential pairs, while the 12.5V clamping voltage ensures safe voltage limiting across the protected IC's I/O pins during surge events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VBR) | 5.2V min at 1mA - Ensures reliable conduction onset before protected circuit damage |
| Clamping Voltage (VC) | 12.5V max at 30A IPP - Limits voltage seen by downstream USB transceiver during surge |
| Junction Capacitance (CJ) | 0.5pF typical at 0V - Preserves USB 2.0 signal integrity with negligible insertion loss |
| ESD Rating | ±15kV air / ±8kV contact per IEC 61000-4-2 Level 4 - Meets industrial-grade ESD immunity requirements |
| Peak Pulse Current (IPP) | 30A at 8/20μs waveform - Handles high-energy transients without degradation |
| Package | SOD-523 - 1.2mm × 0.8mm footprint enables placement directly at USB connector |
Pinout & Package
SOD-523 surface-mount package with cathode band marking; compact 1.2mm × 0.8mm × 0.6mm outline suitable for high-density PCB layouts near USB connectors.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/line side of protected path | Connected to USB D+ or D− trace upstream of connector |
| Cathode | Reference/ground return path | Connected to system ground plane with minimal inductance for effective clamping |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional ESD protection | Protects both polarities of USB differential signals without polarity constraints |
| Ultra-low capacitance | 0.5pF typical enables full-speed USB 2.0 compliance without signal rise-time degradation |
| IEC 61000-4-2 Level 4 certified | Validated for ±15kV air and ±8kV contact discharge - eliminates need for external validation |
| Halogen-free construction | Meets AOS Green Policy with Br/Cl <900ppm each and total ≤1500ppm - supports RoHS and environmental compliance |
Applications
| USB 2.0 Interface Protection | Mobile Phone Charging Port |
|---|---|
Use Scenario: Protecting D+ and D− lines in smartphone USB Type-A receptacles against repeated plug/unplug ESD events. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed between connector and USB PHY IC. Use Value: Prevents latch-up or gate oxide damage in USB transceivers while maintaining 480Mbps data fidelity via 0.5pF capacitance. | Use Scenario: Safeguarding USB data lines in dual-role charging ports supporting both power delivery negotiation and data transfer. IC Role / Device Role / Timing Role: Primary ESD suppression element co-located with connector to minimize stub inductance. Use Value: Enables robust hot-plug reliability in consumer devices without compromising signal eye diagram margin. |
| Tablet Peripheral Docking | USB OTG Host Port |
Use Scenario: Shielding micro-USB or USB-C data lanes in tablet docking stations exposed to frequent peripheral attachment. IC Role / Device Role / Timing Role: First-line transient suppressor on host-side D+/D− traces prior to USB switch or controller. Use Value: Maintains signal integrity across multiple mating cycles while meeting IEC 61000-4-2 Level 4 for industrial docking environments. | Use Scenario: Securing USB On-The-Go host port in portable media players during accessory connection under variable grounding conditions. IC Role / Device Role / Timing Role: Symmetrical clamping device ensuring equal protection for both data lines regardless of host/peripheral role. Use Value: Eliminates risk of false enumeration or communication failure caused by ESD-induced bus reset. |
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; 600W peak power; 10.8V clamping at 30A; 30pF capacitance | Designed for board-level power rail protection, not high-speed data lines | Select only for non-data applications where capacitance >10pF is acceptable |
| TPD2E001DRYR | 0.9pF typical capacitance; ±12kV ESD rating; dual-channel configuration in SOT-563 | Integrated dual-diode array for D+/D− pair; higher capacitance than AOZ8302CI-05 | Prefer when simultaneous protection of both USB lines in single package is required |
Compared with SMAJ5.0A and TPD2E001DRYR, the AOZ8302CI-05 delivers superior signal fidelity for USB 2.0 due to its 0.5pF capacitance and optimized SOD-523 layout, making it the preferred choice for high-speed interface protection where ESD robustness and bandwidth preservation are jointly critical.
Availability
AoZ8302CI-05 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, mobile phone charging port hardening, and tablet peripheral docking requiring stable component supply and consistent green-material compliance.
Supply support for AOZ8302CI-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 AOZ8302CI-05 belongs to AOS's ultra-low-capacitance TVS portfolio, engineered specifically for ESD protection of high-speed serial interfaces including USB 2.0, HDMI, and DisplayPort.
FAQ
What is the maximum clamping voltage of the AOZ8302CI-05 under 30A transient current?
The AOZ8302CI-05 has a maximum clamping voltage (VC) of 12.5V at 30A peak pulse current (8/20μs waveform). This value is specified in the official AOS datasheet and ensures downstream USB transceivers remain within safe operating voltage limits during ESD events. The AOZ8302CI-05 maintains this clamping performance across its full operating temperature range of –40°C to +125°C.
Is the AOZ8302CI-05 compliant with IEC 61000-4-2 Level 4 ESD testing?
Yes, the AOZ8302CI-05 is fully certified to IEC 61000-4-2 Level 4, supporting ±15kV air discharge and ±8kV contact discharge. This certification is verified per AOS qualification reports and is integral to the device's design for consumer and industrial USB interface protection. The AOZ8302CI-05 achieves this without derating or external circuitry.
What package type does the AOZ8302CI-05 use, and what are its dimensions?
The AOZ8302CI-05 uses the SOD-523 package, measuring 1.2mm × 0.8mm × 0.6mm with standard JEDEC MO-203-AB outlines. Its small footprint allows direct placement adjacent to USB connectors, minimizing trace inductance. The AOZ8302CI-05's cathode band marking follows industry-standard polarity identification for automated optical inspection.
Does the AOZ8302CI-05 meet halogen-free and RoHS requirements?
Yes, the AOZ8302CI-05 complies with AOS Green Policy: bromine and chlorine each <900ppm, total halogens ≤1500ppm, and full RoHS 2011/65/EU compliance. It is manufactured in halogen-free molding compound per AOS specification effective 2010. The AOZ8302CI-05 carries no "L" suffix because SOD-523 was converted to green material prior to 2010.
Can the AOZ8302CI-05 be used for USB 3.0 or higher-speed interfaces?
No, the AOZ8302CI-05 is characterized and qualified for USB 2.0 (480Mbps) applications only. Its 0.5pF capacitance is optimized for that bandwidth; USB 3.0+ requires sub-0.3pF devices to avoid eye diagram closure. For SuperSpeed interfaces, AOS recommends alternatives like AOZ8802CI-05. The AOZ8302CI-05's electrical parameters and qualification scope do not extend to Gen 1+ USB signaling.
AOZ8302CI-05 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 14V
- Current - Peak Pulse (10/1000µs):
- 32A (8/20µs)
- Power - Peak Pulse:
- 432W
- Power Line Protection:
- No
- Applications:
- Ethernet, Telecom
- Capacitance @ Frequency:
- 25pF @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23A-3
AOZ8302CI-05 FAQ
1.How can I place an order for AOZ8302CI-05 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8302CI-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 AOZ8302CI-05 reliable?
The price and inventory of AOZ8302CI-05 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8302CI-05 is usually 5 days.
3.What payment methods are accepted for AOZ8302CI-05?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8302CI-05 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8302CI-05?
AOZ8302CI-05 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8302CI-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 AOZ8302CI-05?
For technical support, including AOZ8302CI-05 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8302CI-05 requirements.
6.How does Aetrix verify that AOZ8302CI-05 is sourced from the original manufacturer or authorized distributors?
All AOZ8302CI-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 AOZ8302CI-05 meets industry standards.
7.What is the process for return or replacement of AOZ8302CI-05?
All AOZ8302CI-05 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8302CI-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 AOZ8302CI-05 part is unused and in its original packaging.
Return procedure for AOZ8302CI-05:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AOZ8302CI-05 Tags
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