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Alpha & Omega Semiconductor Inc. AOZ8310DI-08
- Part No.:
- AOZ8310DI-08
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 2-UDFN
- Datasheet:
-
AOZ8310DI-08.pdf
- Description:
- TVS DIODE 8VWM 24VC 2DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,923
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Product details
Overview
AOZ8310DI-08 from Alpha and Omega Semiconductor is a unidirectional high-power TVS diode in a 1.6mm × 1.0mm DFN-2L package, designed to protect 8V power rails against IEC 61000-4-5 surges (70A, 8/20µs), IEC 61000-4-2 ESD (±30kV air/contact), and IEC 61000-4-4 EFT (80A). It delivers 1500W peak pulse power with 425pF junction capacitance and clamps at ≤24V under 70A surge current - deployed in USB voltage buses and mobile device battery protection circuits.
For engineers reviewing the AOZ8310DI-08 datasheet, pinout, applications, or equivalent options, this page provides verified electrical specifications, thermal limits (−40°C to +125°C), clamping behavior under TLP and 8/20µs waveforms, dynamic resistance (0.05–0.1Ω), and RoHS-compliant green packaging - all critical for ESD-hardened power rail design.
Technical Context
The AOZ8310DI-08 implements a single unidirectional avalanche junction optimized for low-clamping, high-surge capability on DC power lines. Its 8V reverse working voltage (VRWM) and 9–12V breakdown range (VBR at 1mA) define precise overvoltage triggering, while sub-100nA leakage at VRWM ensures minimal standby loss in battery-sensitive systems.
Clamping performance is characterized across two stress models: 100ns TLP pulses (e.g., 12–13.5V at ±30A) and standardized 8/20µs surges (21–24V at ±70A), enabling accurate system-level transient margining. Dynamic resistance of 0.05–0.1Ω supports fast energy dissipation without thermal runaway under repeated events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Working Voltage (VRWM) | 8 V - maximum continuous DC voltage the device blocks without conduction; sets minimum system operating headroom before clamping. |
| Breakdown Voltage (VBR) | 9–12 V at 1 mA - precise voltage threshold where avalanche conduction begins; ensures reliable triggering above nominal rail. |
| Peak Pulse Current (IPP) | 70 A (8/20µs) - maximum surge current it safely shunts without failure; validates compliance with IEC 61000-4-5 Level 4. |
| Clamping Voltage (VCL) | 21–24 V at ±70A (8/20µs) - maximum voltage imposed on protected circuit during worst-case surge; defines downstream IC survivability margin. |
| Junction Capacitance (CJ) | 425 pF at 0 V, 1 MHz - low enough to avoid signal integrity degradation on 8V power rails with moderate slew rates. |
| Dynamic Resistance (RDNY) | 0.05–0.1 Ω - governs voltage rise per unit current during transient; enables tight clamping control and predictable power dissipation. |
| Operating Temperature | −40°C to +125°C ambient - supports deployment in automotive cabin modules, industrial power supplies, and portable electronics. |
Pinout & Package
AOZ8310DI-08 is housed in an ultra-small, RoHS-compliant DFN-2L package measuring 1.6 mm × 1.0 mm × 0.55 mm, optimized for space-constrained PCB layouts in mobile and USB applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Input/Power Rail Connection | Connected to protected line (e.g., USB VBUS); conducts surge current toward ground when clamped. |
| Cathode (Pin 2) | Ground Reference Terminal | Low-impedance path to system ground; must be routed with minimal inductance to preserve clamping performance. |
Key Features
| Feature | Design Value |
|---|---|
| IEC 61000-4-2 ESD immunity | ±30 kV air and contact discharge - exceeds Level 4 requirements, eliminating need for external ESD staging in handheld interfaces. |
| IEC 61000-4-5 surge rating | 70 A (8/20 µs) - sustains high-energy lightning-induced transients on 8V rails without degradation over 1000+ events. |
| Human Body Model (HBM) | ±30 kV - protects assembly-line handling and end-user touch points in consumer electronics manufacturing. |
| Peak pulse power | 1500 W - enables compact placement directly at connector entry points without derating or parallel devices. |
| Green/RoHS compliance | Halogen-free, lead-free DFN package - satisfies global environmental regulations and simplifies supply chain qualification. |
Applications
| USB Voltage Bus Protection | Battery Protection Circuit |
|---|---|
|
Use Scenario: Protects 5V/8V USB Type-C VBUS lines from hot-plug transients, cable ESD, and charger-induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBUS and GND, clamping within nanoseconds to limit voltage seen by USB controller and power switch. Use Value: Maintains <24V clamping at 70A surge, preserving USB PD compliance and preventing latch-up in downstream PMICs. |
Use Scenario: Shields lithium-ion battery charging paths (e.g., from USB or adapter input) against reverse polarity misconnection and load-dump spikes. IC Role / Device Role / Timing Role: Front-end surge suppressor on battery input rail, absorbing >1500W pulses before protection FETs or charge controllers. Use Value: Enables direct integration into compact battery management modules with no additional layout area beyond DFN footprint. |
| Mobile Device Power Rails | Display Panel Power Supply |
|
Use Scenario: Guards internal 8V camera module or audio amplifier rails from board-level ESD and switching noise coupling. IC Role / Device Role / Timing Role: Localized TVS adjacent to sensitive analog ICs, minimizing trace inductance to achieve sub-100ns response. Use Value: 425pF capacitance avoids resonance with typical 8V rail decoupling, ensuring stable operation without filtering trade-offs. |
Use Scenario: Safeguards 8V backlight or TCON power inputs in OLED/LCD panels against ESD from flex-cable handling and EFT from nearby digital switching. IC Role / Device Role / Timing Role: Single-line protector on panel-side power entry, rated for −40°C to +125°C to survive display thermal cycling. Use Value: Delivers 1500W pulse handling in 1.6×1.0mm footprint - critical for narrow bezel designs where board space is constrained. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ8.0A | DO-214AC package (4.5×2.7mm), 70A IPP, 12.3V VBR, 16.5V clamping @ 70A | Larger footprint; higher clamping voltage (16.5V vs. 24V max) but lower dynamic impedance | Preferred where board space allows and tighter clamping voltage is prioritized over size. |
| TPD4E001DPYR | 4-channel 0.5pF array in DQFN-10, 8V VRWM, 12V VBR, 15A IPP per line | Multi-line solution; insufficient single-line surge rating (15A vs. 70A) for bus-level protection | Only suitable for low-energy signal-line ESD; not a functional replacement for AOZ8310DI-08's power-rail duty. |
Compared with SMAJ8.0A and TPD4E001DPYR, the AOZ8310DI-08 uniquely combines ultra-compact DFN-2L packaging, 70A surge capability, and 1500W power handling - making it the only option among the three qualified for space-limited, high-energy 8V rail protection without derating or paralleling.
Availability
AOZ8310DI-08 is available at Aetrix Electronics and suitable for USB voltage bus protection, battery protection circuits, and mobile device power rails requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for AOZ8310DI-08 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, and industrial markets.
The AOZ8310DI series was developed to deliver high-surge, low-capacitance TVS protection in miniature DFN packages - targeting next-generation mobile, USB, and battery-powered systems where board area and transient robustness are co-constrained.
FAQ
What is the maximum clamping voltage of AOZ8310DI-08 under a 70A IEC 61000-4-5 surge?
The AOZ8310DI-08 clamps to a maximum of 24 V at −70 A and 21 V at +70 A under IEC 61000-4-5 8/20 µs surge conditions. This value is measured per datasheet Page 4, Table "Clamping Voltage (IEC61000-4-5 8/20µs)" for AOZ8310DI-08, confirming its ability to hold protected circuits below critical overvoltage thresholds during high-energy transients.
Does AOZ8310DI-08 meet IEC 61000-4-2 Level 4 ESD requirements?
Yes, the AOZ8310DI-08 is rated for ±30 kV air discharge and ±30 kV contact discharge per IEC 61000-4-2, exceeding Level 4 (±15 kV air / ±8 kV contact). This specification is explicitly stated in the General Description and Absolute Maximum Ratings sections of the Rev. 3.0 datasheet, validating its use in handheld and interface-critical applications.
What is the junction capacitance of AOZ8310DI-08 and why does it matter for 8V power rails?
The AOZ8310DI-08 exhibits 425 pF junction capacitance at 0 V and 1 MHz. This value is low enough to avoid resonant interactions with typical 8V rail decoupling networks (e.g., 10–100 µF bulk + 0.1 µF ceramic), preventing unintended voltage ringing or instability during fast transients - a key advantage over higher-capacitance TVS alternatives.
Can AOZ8310DI-08 be used in automotive cabin applications?
Yes, AOZ8310DI-08 operates across −40°C to +125°C ambient temperature and is qualified for industrial and consumer environments. While not AEC-Q200 certified, its thermal and surge ratings align with non-safety-critical cabin modules (e.g., infotainment USB ports, display backlight supplies) where full automotive qualification is not mandated.
What is the dynamic resistance of AOZ8310DI-08 and how does it affect clamping performance?
The AOZ8310DI-08 has a dynamic resistance (RDNY) of 0.05–0.1 Ω, measured between 1 A and 30 A TLP pulses. This low value ensures minimal voltage overshoot during rapid current rise, directly contributing to its tight clamping window (e.g., 12–13.5 V at ±30 A) and predictable power dissipation under repetitive surge events.
AOZ8310DI-08 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):
- 8V (Max)
- Voltage - Breakdown (Min):
- 9V
- Voltage - Clamping (Max) @ Ipp:
- 24V
- Current - Peak Pulse (10/1000µs):
- 70A (8/20µs)
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- USB
- Capacitance @ Frequency:
- 425pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-DFN (1.6x1)
AOZ8310DI-08 FAQ
1.How can I place an order for AOZ8310DI-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8310DI-08 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-08 reliable?
The price and inventory of AOZ8310DI-08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8310DI-08 is usually 5 days.
3.What payment methods are accepted for AOZ8310DI-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8310DI-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8310DI-08?
AOZ8310DI-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8310DI-08 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-08?
For technical support, including AOZ8310DI-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8310DI-08 requirements.
6.How does Aetrix verify that AOZ8310DI-08 is sourced from the original manufacturer or authorized distributors?
All AOZ8310DI-08 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-08 meets industry standards.
7.What is the process for return or replacement of AOZ8310DI-08?
All AOZ8310DI-08 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8310DI-08, 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-08 part is unused and in its original packaging.
Return procedure for AOZ8310DI-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AOZ8310DI-08 Tags
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