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Alpha & Omega Semiconductor Inc. AOZ8310DI-09
- Part No.:
- AOZ8310DI-09
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 2-UDFN
- Datasheet:
-
AOZ8310DI-09.pdf
- Description:
- TVS DIODE 9VWM 24VC 2DFN
- Quantity:
- Payment:
- Shipping:
Inventory:9,319
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Product details
Overview
AOZ8310DI-09 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 9V power rails. It delivers 65A peak pulse current (8/20µs), clamps to ≤24V at 65A, and supports ±30kV IEC 61000-4-2 ESD immunity - used in mobile device battery protection and USB voltage bus circuits.
For engineers reviewing the AOZ8310DI-09 datasheet, pinout, applications, or equivalent options, this page provides verified electrical parameters, clamping behavior under IEC 61000-4-5 surge, junction capacitance (385pF), dynamic resistance (0.05–0.1Ω), and thermal rating (-40°C to +125°C) for robust power-rail transient suppression.
Technical Context
The AOZ8310DI-09 operates as a unidirectional avalanche diode with reverse working voltage (VRWM) of 9V and breakdown voltage (VBR) of 10–13V at 1mA. Its low dynamic resistance (0.05–0.1Ω) ensures rapid voltage clamping during fast transients like EFT (80A, 5/50ns) and IEC 61000-4-5 surges (65A, 8/20µs).
It features ultra-low leakage (<100nA at VRWM), 385pF junction capacitance suitable for moderate-speed power lines, and is rated for continuous operation from -40°C to +125°C ambient. The device meets IEC 61000-4-2 Level 4 (±30kV air/contact), IEC 61000-4-4 (EFT), and HBM ±30kV standards without external biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Working Voltage (VRWM) | 9 V - maximum continuous DC voltage the device blocks without conduction. |
| Peak Pulse Current (IPP) | 65 A (8/20µs waveform) - sustains high-energy surges without failure in power-rail protection. |
| Clamping Voltage (VCL) | ≤24 V at IPP = -65A - limits downstream voltage stress during worst-case surge events. |
| Junction Capacitance (CJ) | 385 pF at 0V, 1MHz - low enough to avoid signal integrity issues on 9V supply lines. |
| ESD Rating (IEC 61000-4-2) | ±30 kV contact & air - exceeds Level 4 immunity for handheld and portable electronics. |
| Dynamic Resistance (RDNY) | 0.05–0.1 Ω - enables fast, predictable clamping response across 1–30A TLP range. |
| Operating Temperature | -40°C to +125°C - supports automotive interior, industrial, and mobile battery applications. |
Pinout & Package
AOZ8310DI-09 is housed in a RoHS-compliant, halogen-free 1.6mm × 1.0mm DFN-2L package with exposed pad for thermal dissipation. The two terminals are anode and cathode, configured for unidirectional protection between power rail and ground.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Power Rail Connection | Connected to protected line (e.g., 9V battery rail); conducts during negative transients when referenced to cathode. |
| Cathode | Ground Reference Terminal | Connected to system ground; defines polarity and establishes clamping path for positive overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional TVS architecture | Enables precise 9V rail protection with asymmetric clamping (positive VCL ≈21.5V, negative VCL ≈−10.5V at 65A). |
| 1500W peak pulse power | Handles high-energy 8/20µs surges per IEC 61000-4-5 without degradation or thermal runaway. |
| Low dynamic resistance | 0.05–0.1Ω ensures minimal voltage overshoot during fast transients, improving system-level robustness. |
| Ultra-small DFN-2L footprint | 1.6mm × 1.0mm area saves PCB space in compact mobile and wearable designs. |
| Green product compliance | RoHS-compliant and halogen-free per AOS Green Policy - meets environmental requirements for global markets. |
Applications
| USB Voltage Bus Protection | Battery Protection Circuit |
|---|---|
|
Use Scenario: Protects 5V–9V USB power delivery paths from ESD and hot-plug surges. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBUS and GND to clamp transients before reaching USB controller or PMIC. Use Value: Clamps to ≤24V at 65A while adding only 385pF capacitance - avoids USB 2.0 signal integrity degradation. |
Use Scenario: Shields lithium-ion battery input rails in smartphones and tablets from charger-induced surges. IC Role / Device Role / Timing Role: Standalone TVS connected directly across battery terminals to absorb IEC 61000-4-5 energy before cell protection ICs. Use Value: Withstands ±30kV ESD and 65A 8/20µs surges while operating up to +125°C - critical for thermally constrained battery compartments. |
| Mobile Device Power Management | Industrial Display Power Rails |
|
Use Scenario: Guards 9V auxiliary rails feeding camera modules or audio codecs in portable electronics. IC Role / Device Role / Timing Role: Primary surge suppressor on secondary power domain, positioned upstream of LDOs and load switches. Use Value: Low leakage (<100nA) prevents standby current drain; 9V VRWM matches common PMIC auxiliary outputs. |
Use Scenario: Protects 9V logic supply in ruggedized LCD/HMI panels exposed to EFT in factory environments. IC Role / Device Role / Timing Role: TVS mounted at board edge on 9V input connector to shunt conducted noise from adjacent machinery. Use Value: 80A EFT rating (IEC 61000-4-4) and −40°C to +125°C operation ensure reliability in uncontrolled industrial settings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ9.0A | DO-214AC package (4.5mm × 2.7mm), 70A IPP, 23.1V clamping at 65A, 1000pF CJ. | Larger footprint and higher capacitance limit use in high-speed or space-constrained designs. | Choose SMAJ9.0A only if board layout allows larger SMC/SMA package and higher capacitance is acceptable. |
| TPD2E001DRYR | 2-channel bidirectional TVS in 1.6mm × 1.6mm DFN, 3A IPP per line, 12V clamping, 12pF CJ. | Lower surge rating and bidirectional structure make it unsuitable for 9V rail-only unidirectional protection. | Select TPD2E001DRYR for low-capacitance data-line ESD only - not a functional substitute for AOZ8310DI-09's power-rail surge capability. |
Compared with SMAJ9.0A and TPD2E001DRYR, AOZ8310DI-09 uniquely combines 65A surge handling, 385pF capacitance, and 1.6mm × 1.0mm DFN-2L size - enabling high-density 9V rail protection where space, clamping precision, and energy absorption are jointly critical.
Availability
AOZ8310DI-09 is available at Aetrix Electronics and suitable for USB voltage bus protection, battery protection circuits, and mobile device power management requiring stable component supply and long-term lifecycle support.
Supply support for AOZ8310DI-09 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 AOZ8310DI series was developed to deliver high-power, ultra-compact transient protection for modern portable and industrial power rails - emphasizing low clamping voltage, small footprint, and full IEC standard compliance.
FAQ
What is the reverse working voltage (VRWM) of AOZ8310DI-09?
The AOZ8310DI-09 has a reverse working voltage (VRWM) of 9 V, meaning it reliably blocks voltages up to 9 V in normal operation while remaining non-conductive. This value is confirmed in the Electrical Characteristics table on page 5 of the Rev. 3.0 datasheet and aligns with its designation as the "-09" variant in the AOZ8310DI family. AOZ8310DI-09 maintains <100 nA leakage at this voltage.
Does AOZ8310DI-09 meet IEC 61000-4-2 Level 4 ESD requirements?
Yes, AOZ8310DI-09 exceeds IEC 61000-4-2 Level 4 with ±30 kV air discharge and ±30 kV contact discharge ratings - validated per test conditions CDischarge = 150 pF and RDischarge = 330 Ω. This performance is specified in the Absolute Maximum Ratings table (page 2) and General Description (page 1) of the AOZ8310DI datasheet. AOZ8310DI-09 achieves this without derating across its full -40°C to +125°C operating range.
What is the clamping voltage of AOZ8310DI-09 at 65A peak pulse current?
At 65 A peak pulse current (8/20 µs waveform), AOZ8310DI-09 clamps to a maximum of 24 V for positive transients and −10.5 V for negative transients, as specified in the Electrical Characteristics table (page 5). This clamping behavior ensures downstream 9 V-rated components remain within safe operating limits during surge events. AOZ8310DI-09 achieves this with a dynamic resistance of 0.05–0.1 Ω.
Is AOZ8310DI-09 suitable for battery protection in mobile devices?
Yes, AOZ8310DI-09 is explicitly recommended for battery protection in mobile devices per the Applications section (page 1) and Typical Application diagram (page 2). Its 9 V VRWM matches common Li-ion battery charging rails, ±30 kV ESD rating protects against user-handling events, and −40°C to +125°C operation covers extreme thermal environments inside sealed enclosures. AOZ8310DI-09's 385 pF junction capacitance avoids loading sensitive battery fuel gauges.
What package type does AOZ8310DI-09 use, and how many pins does it have?
AOZ8310DI-09 uses a 1.6 mm × 1.0 mm DFN-2L package with two terminals: anode and cathode. This ultra-compact, surface-mount package is specified in the Ordering Information table (page 2) and Pin Configuration diagram (page 2) of the datasheet. The DFN-2L format enables high-density placement on space-constrained PCBs, and the exposed pad enhances thermal performance. AOZ8310DI-09 has no internal circuitry beyond the single unidirectional TVS junction.
AOZ8310DI-09 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):
- 9V (Max)
- Voltage - Breakdown (Min):
- 10V
- Voltage - Clamping (Max) @ Ipp:
- 24V
- Current - Peak Pulse (10/1000µs):
- 65A (8/20µs)
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- USB
- Capacitance @ Frequency:
- 385pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-DFN (1.6x1)
AOZ8310DI-09 FAQ
1.How can I place an order for AOZ8310DI-09 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8310DI-09 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-09 reliable?
The price and inventory of AOZ8310DI-09 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8310DI-09 is usually 5 days.
3.What payment methods are accepted for AOZ8310DI-09?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8310DI-09 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8310DI-09?
AOZ8310DI-09 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8310DI-09 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-09?
For technical support, including AOZ8310DI-09 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8310DI-09 requirements.
6.How does Aetrix verify that AOZ8310DI-09 is sourced from the original manufacturer or authorized distributors?
All AOZ8310DI-09 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-09 meets industry standards.
7.What is the process for return or replacement of AOZ8310DI-09?
All AOZ8310DI-09 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8310DI-09, 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-09 part is unused and in its original packaging.
Return procedure for AOZ8310DI-09:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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