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Alpha & Omega Semiconductor Inc. AOZ8310DI-02
- Part No.:
- AOZ8310DI-02
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 2-UDFN
- Datasheet:
-
AOZ8310DI-02.pdf
- Description:
- TVS DIODE 2.5VWM 15VC 2DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,136
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Product details
Overview
AOZ8310DI-02 from Alpha and Omega Semiconductor is a unidirectional high-power TVS diode in a 1.6mm × 1.0mm DFN-2L package, designed for single-line surge and ESD protection on low-voltage power rails. It features a 2.5V reverse working voltage (VRWM), 75A peak pulse current (IEC 61000-4-5, 8/20µs), 1100W peak pulse power, ±30kV IEC 61000-4-2 ESD rating, and operates from −40°C to +125°C - ideal for USB bus and battery protection in mobile devices.
For engineers reviewing the AOZ8310DI-02 datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage at 75A (13–15V), dynamic resistance (0.05–0.1Ω), junction capacitance (100pF), and compatibility with IEC 61000-4-2 Level 4, IEC 61000-4-4 (80A EFT), and IEC 61000-4-5 surge standards.
Technical Context
The AOZ8310DI-02 implements a silicon avalanche diode structure optimized for fast response (<1 ns) to transient overvoltage events on DC power lines. Its unidirectional configuration provides asymmetric clamping - forward conduction near −1V and reverse clamping starting at 2.8V breakdown - enabling precise rail protection without interfering with normal signal polarity.
It delivers robust immunity across three major stress models: ±30kV contact/air ESD per IEC 61000-4-2, 80A EFT bursts per IEC 61000-4-4, and up to 75A 8/20µs surge per IEC 61000-4-5. The 100pF junction capacitance ensures minimal signal distortion on 2.5V rails, while its DFN-2L footprint supports high-density PCB layouts in space-constrained mobile applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Working Voltage (VRWM) | 2.5 V - maximum continuous DC voltage before leakage exceeds 1000 nA; sets upper limit for protected rail voltage. |
| Breakdown Voltage (VBR) | 2.8–3.3 V at 1 mA - defines onset of avalanche conduction; ensures reliable triggering below system overvoltage thresholds. |
| Clamping Voltage (VCL) | 13–15 V at 75 A (8/20 µs) - peak voltage seen by downstream circuit during worst-case surge; limits stress on connected ICs. |
| Peak Pulse Power (PPP) | 1100 W - maximum energy dissipation capability under standardized 8/20 µs surge waveform. |
| Junction Capacitance (CJ) | 100 pF at 0 V, 1 MHz - low enough to avoid signal integrity degradation on 2.5 V power rails with high-frequency noise. |
| ESD Rating | ±30 kV air/contact per IEC 61000-4-2 - exceeds Level 4 requirement, eliminating need for external ESD staging in many portable designs. |
| Operating Temperature | −40°C to +125°C ambient - supports deployment in automotive cabin modules and industrial battery management systems. |
Pinout & Package
AOZ8310DI-02 is housed in a RoHS-compliant, halogen-free 1.6 mm × 1.0 mm DFN-2L package with exposed thermal pad (non-electrical). The compact two-terminal design minimizes board area and parasitic inductance for optimal high-speed transient suppression.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Line terminal | Connected to protected power rail (e.g., VBUS); conducts surge current toward ground when reverse-biased beyond VBR. |
| Cathode | Ground reference terminal | Connected to system ground plane; establishes reference for clamping action and provides low-inductance return path for surge current. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional TVS architecture | Enables asymmetric protection: blocks reverse faults while clamping positive surges - critical for DC power rail integrity. |
| Ultra-low dynamic resistance | 0.05–0.1 Ω - minimizes voltage overshoot during high-current transients, improving protection margin for sensitive 2.5 V logic. |
| IEC 61000-4-4 EFT immunity | 80 A (5/50 ns) - withstands repetitive fast transient bursts common in industrial power supplies and automotive ECUs. |
| Green product compliance | Halogen-free and RoHS-compliant - meets environmental requirements for consumer electronics and EU medical peripherals. |
| Low leakage current | ≤1000 nA at 2.5 V - prevents excessive quiescent power loss in always-on battery-powered systems. |
Applications
| USB 2.0/3.0 VBUS Protection | Battery Input Protection |
|---|---|
|
Use Scenario: Protecting 5 V/2.5 V USB host/device ports against hot-plug surges, cable discharge events, and ESD from user handling. IC Role / Device Role / Timing Role: Primary line-side TVS clamp placed between connector and USB power switch or PMIC input. Use Value: Clamps 75 A surges to ≤15 V while adding only 100 pF loading - preserves signal integrity and avoids false overvoltage shutdowns. |
Use Scenario: Safeguarding Li-ion/Li-poly battery charging inputs (e.g., from USB-C PD or wall adapters) against reverse polarity misconnection and load dump spikes. IC Role / Device Role / Timing Role: Unidirectional surge suppressor installed at battery terminal or charger IC input to absorb 8/20 µs transients. Use Value: Withstands ±30 kV ESD and 75 A surges without degradation, ensuring long-term reliability in handheld and wearable battery packs. |
| Mobile Display Power Rail | Industrial Sensor Node Supply |
|
Use Scenario: Shielding 2.5 V–3.3 V display backlight or interface power rails in smartphones and tablets from ESD coupling through flex cables and touch overlays. IC Role / Device Role / Timing Role: Point-of-load TVS directly at display module connector to minimize trace inductance and clamping delay. Use Value: 100 pF capacitance avoids resonance with display driver output impedance; 2.5 V VRWM matches low-voltage rail requirements precisely. |
Use Scenario: Hardening 2.5 V sensor supply lines in factory automation nodes exposed to relay switching noise and motor drive coupling. IC Role / Device Role / Timing Role: Front-end transient suppressor on isolated DC-DC converter output feeding analog sensor front-ends. Use Value: −40°C to +125°C operation and 80 A EFT rating ensure stable performance in uncontrolled industrial enclosures without derating. |
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 mm × 2.7 mm); 200 W PPP; 100 A IPP; higher VRWM tolerance (2.5 V min, 2.8 V typ). | Larger footprint; higher clamping voltage (25 V at 10 A); suited for less space-constrained 2.5 V industrial supplies. | Choose SMAJ2.5A where board area is not limiting and higher surge margin is prioritized over capacitance and size. |
| TPD2E001DRYR | DFN-2L package (1.0 mm × 0.6 mm); bidirectional; 12 V VRWM; 3 A IPP; 12 pF CJ - optimized for data lines, not power rails. | Not rated for power rail surge (IEC 61000-4-5); insufficient PPP (120 W); unsuitable for 75 A events. | Select TPD2E001DRYR only for low-capacitance ESD protection on signal lines - never as direct replacement for AOZ8310DI-02 on power rails. |
Compared with SMAJ2.5A and TPD2E001DRYR, the AOZ8310DI-02 uniquely balances ultra-small DFN-2L size, 1100 W power handling, 100 pF capacitance, and 2.5 V VRWM - making it the only option among the three qualified for high-reliability, space-limited 2.5 V power rail protection meeting IEC 61000-4-2/4-4/4-5.
Availability
AOZ8310DI-02 is available at Aetrix Electronics and suitable for USB voltage bus protection, battery input hardening, and mobile display power rail safeguarding requiring stable component supply across production ramps and long-life programs.
Supply support for AOZ8310DI-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 high-efficiency MOSFETs, TVS diodes, and power ICs for computing, consumer, industrial, and automotive markets.
The AOZ8310DI series was developed to deliver high-power, ultra-compact transient protection for next-generation portable electronics with stringent size and ESD/surge compliance requirements - particularly targeting USB, battery, and display subsystems.
FAQ
What is the maximum clamping voltage of AOZ8310DI-02 under a 75 A IEC 61000-4-5 surge?
The AOZ8310DI-02 clamps to 13–15 V at 75 A (8/20 µs waveform), as specified in the Electrical Characteristics table on page 3 of the Rev. 3.0 datasheet. This value represents the peak voltage imposed on the protected circuit during worst-case surge conditions and is measured between anode and cathode terminals with proper PCB layout and grounding.
Does AOZ8310DI-02 meet IEC 61000-4-2 Level 4 ESD requirements?
Yes, the AOZ8310DI-02 exceeds IEC 61000-4-2 Level 4 with ±30 kV air discharge and ±30 kV contact discharge ratings. This is confirmed in the General Description (page 1) and Absolute Maximum Ratings (page 2) sections of the Rev. 3.0 datasheet, making it suitable for consumer-facing USB and display interfaces without additional ESD staging.
What is the junction capacitance of AOZ8310DI-02 and why does it matter for 2.5 V rails?
The AOZ8310DI-02 has a junction capacitance of 100 pF at 0 V and 1 MHz. For 2.5 V power rails - especially those feeding high-speed analog circuits or RF modules - this low capacitance prevents unwanted filtering, resonance, or voltage droop during transient events, preserving power integrity without compromising protection performance.
Can AOZ8310DI-02 be used in automotive cabin applications?
Yes, AOZ8310DI-02 is rated for −40°C to +125°C ambient operation and meets IEC 61000-4-4 (80 A EFT) and IEC 61000-4-5 (75 A surge), making it suitable for non-safety-critical automotive cabin modules such as infotainment USB hubs, display backlight supplies, and sensor node power inputs - provided it is not deployed in life-support or safety-critical systems per AOS' Life Support Policy.
How does the unidirectional configuration of AOZ8310DI-02 affect its placement on a 2.5 V rail?
The AOZ8310DI-02 must be oriented with its anode connected to the 2.5 V rail and cathode to ground. Its unidirectional behavior ensures forward conduction only during negative transients (clamping to ~−1 V) and reverse avalanche clamping above 2.8 V - preventing unintended conduction during normal 2.5 V operation while delivering precise overvoltage protection in either polarity direction.
AOZ8310DI-02 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package/Case:
- 2-UDFN
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 2.5V (Max)
- Voltage - Breakdown (Min):
- 2.8V
- Voltage - Clamping (Max) @ Ipp:
- 15V
- Current - Peak Pulse (10/1000µs):
- 75A (8/20µs)
- Power - Peak Pulse:
- 1100W (1.1kW)
- Power Line Protection:
- No
- Applications:
- USB
- Capacitance @ Frequency:
- 100pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-DFN (1.6x1)
AOZ8310DI-02 FAQ
1.How can I place an order for AOZ8310DI-02 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8310DI-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 AOZ8310DI-02 reliable?
The price and inventory of AOZ8310DI-02 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8310DI-02 is usually 5 days.
3.What payment methods are accepted for AOZ8310DI-02?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8310DI-02 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8310DI-02?
AOZ8310DI-02 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8310DI-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 AOZ8310DI-02?
For technical support, including AOZ8310DI-02 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8310DI-02 requirements.
6.How does Aetrix verify that AOZ8310DI-02 is sourced from the original manufacturer or authorized distributors?
All AOZ8310DI-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 AOZ8310DI-02 meets industry standards.
7.What is the process for return or replacement of AOZ8310DI-02?
All AOZ8310DI-02 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8310DI-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 AOZ8310DI-02 part is unused and in its original packaging.
Return procedure for AOZ8310DI-02:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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