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Alpha & Omega Semiconductor Inc. AOZ8320DI-05
- Part No.:
- AOZ8320DI-05
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 0603 (1608 Metric)
- Datasheet:
-
AOZ8320DI-05.pdf
- Description:
- TVS DIODE 5VWM 16VC 2DFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,426
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Product details
Overview
AOZ8320DI-05 from Alpha & Omega Semiconductor is a unidirectional transient voltage suppressor (TVS) diode designed for single-line power rail surge and ESD protection in 5V systems. It delivers 85A peak pulse current (8/20µs), clamps to ≤16V at 85A, operates from -40°C to +125°C, and features 675pF junction capacitance in a 1.6mm × 0.8mm DFN-2L package - ideal for USB voltage bus and battery protection circuits.
For engineers reviewing the AOZ8320DI-05 datasheet, pinout, applications, or equivalent options, this page provides verified electrical specifications, thermal and reliability data, exact package dimensions, and validated alternative parts for 5V rail protection design-in.
Technical Context
The AOZ8320DI-05 implements a silicon avalanche diode structure optimized for fast response (<1 ns) to ESD transients and high-energy surges per IEC 61000-4-2 (±30kV air/contact), IEC 61000-4-5 (8/20µs, up to 85A), and IEC 61000-4-4 (80A EFT). Its unidirectional configuration protects positive-rail-to-ground paths only.
It exhibits low dynamic resistance (0.05–0.09Ω) across 1–30A TLP sweep, enabling tight clamping with minimal voltage overshoot. The device is rated for 1500W peak pulse power and maintains stable reverse leakage (<1000nA at 5V VRWM) over its full operating temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Working Voltage (VRWM) | 5 V - maximum continuous DC voltage the device blocks without conduction. |
| Peak Pulse Current (IPP) | 85 A (8/20µs) - sustains high-energy surges per IEC 61000-4-5 without failure. |
| Clamping Voltage (VCL) | ≤16 V at IPP = 85A - limits downstream IC voltage stress during worst-case surge events. |
| Junction Capacitance (CJ) | 675 pF at 0V, 1MHz - impacts signal integrity on high-speed lines; suitable for USB 2.0 but not USB 3.0. |
| ESD Rating (IEC 61000-4-2) | ±30 kV contact/air - exceeds Level 4 immunity requirements for handheld and portable electronics. |
| Operating Temperature | -40°C to +125°C ambient - supports automotive under-hood and industrial power rail deployments. |
| Package | DFN-2L, 1.6mm × 0.8mm - ultra-compact footprint compatible with dense PCB layouts and automated assembly. |
Pinout & Package
AOZ8320DI-05 uses a 2-terminal DFN package (1.6mm × 0.8mm, 0.4mm pitch) with exposed pad for thermal dissipation. Terminals are non-polarized in layout but functionally asymmetric: Pin 1 is Anode (cathode tied to ground reference), Pin 2 is Cathode (connected to protected rail).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode) | Input/Protected Line Connection | Connected to 5V power rail; conducts surge current toward ground when clamped. |
| Pin 2 (Cathode) | Ground Reference Terminal | Must be connected to low-impedance system ground plane to ensure effective clamping and thermal path. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional TVS architecture | Protects only positive-going transients on 5V rails; avoids forward-bias conduction during normal operation. |
| 1500W peak pulse power rating | Handles repeated high-energy surges without parametric shift or catastrophic failure. |
| Low dynamic resistance (0.05–0.09Ω) | Minimizes clamping voltage rise under high-current surge, reducing stress on downstream ICs. |
| RoHS-compliant & halogen-free | Meets environmental compliance mandates for consumer, industrial, and automotive end equipment. |
| MSL 1 moisture sensitivity | Zero floor life limitation; no bake requirement before reflow soldering. |
Applications
| USB Voltage Bus Protection | Battery Protection Circuit |
|---|---|
|
Use Scenario: Protecting 5V VBUS line in USB Type-A/B ports against hot-plug ESD and cable discharge events. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBUS and chassis/ground to shunt transients before reaching USB controller or PMIC. Use Value: Maintains ±30kV IEC 61000-4-2 immunity while adding only 675pF loading - no signal degradation on USB 2.0 data lines. |
Use Scenario: Safeguarding lithium-ion battery charging inputs from surge coupling via shared power paths or adapter faults. IC Role / Device Role / Timing Role: TVS mounted at battery connector to clamp overvoltage spikes before reaching fuel gauge or charge management IC. Use Value: Clamps to ≤16V at 85A, preventing overvoltage damage to sensitive battery protection MOSFETs and analog front-ends. |
| Mobile Device Power Rails | Display Panel Power Input |
|
Use Scenario: Securing 5V bias rails feeding camera modules, audio codecs, or sensors in smartphones and tablets. IC Role / Device Role / Timing Role: Point-of-load TVS on compact 5V distribution nodes to suppress board-level ESD coupling. Use Value: Ultra-small DFN-2L footprint (1.6×0.8mm) enables placement directly at connector or IC input, minimizing inductance and improving clamping efficacy. |
Use Scenario: Protecting 5V logic supply inputs of TFT-LCD or OLED display driver ICs from ESD during handling or interface cable mating. IC Role / Device Role / Timing Role: TVS installed between display flex cable VCC pin and local ground to prevent latch-up or gate oxide damage. Use Value: -40°C to +125°C operation ensures reliability across display thermal cycling in automotive infotainment and industrial HMIs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ5.0A | DO-214AC package (4.5×2.7mm); 40A IPP; 1000W PPP; 1000pF CJ | Larger footprint; higher capacitance limits use in high-speed interfaces | Choose SMAJ5.0A only if board space allows larger package and lower clamping performance is acceptable. |
| TPD4E001DPYR | 4-channel array in X2SON-8; 3A IPP per line; 12pF CJ; bidirectional | Designed for data-line ESD, not power-rail surge; insufficient for 85A IEC 61000-4-5 | TPD4E001DPYR suits USB data lines but cannot replace AOZ8320DI-05 for 5V VBUS surge protection. |
Compared with SMAJ5.0A and TPD4E001DPYR, AOZ8320DI-05 uniquely combines ultra-compact DFN-2L size, 85A surge capability, and 5V-specific clamping - making it optimal for space-constrained 5V power rail protection where high-energy robustness is mandatory.
Availability
AOZ8320DI-05 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 AOZ8320DI-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 high-efficiency MOSFETs, TVS diodes, and power ICs for computing, consumer, industrial, and automotive markets.
The AOZ8320DI family was engineered specifically for one-line, high-power surge suppression on low-voltage power rails - delivering best-in-class peak pulse current density and clamping performance in sub-2mm² packages.
FAQ
What is the clamping voltage of AOZ8320DI-05 at 85A surge current?
The AOZ8320DI-05 clamps to a maximum of 16V (positive polarity) and -8V (negative polarity) at 85A peak pulse current (8/20µs waveform), as specified in the Electrical Characteristics table on page 4 of the Rev. 1.1 datasheet. This ensures downstream 5V-rated ICs remain within safe operating voltage margins during IEC 61000-4-5 compliance testing.
Does AOZ8320DI-05 support bidirectional ESD protection?
No, AOZ8320DI-05 is a unidirectional TVS diode optimized for positive-rail-to-ground protection only. It does not provide symmetrical clamping for negative transients beyond its specified -8V limit at 85A. For bidirectional protection, a separate device such as AOZ8320DI-05's complementary variant or a dedicated bidirectional TVS must be used.
What is the junction capacitance of AOZ8320DI-05 and how does it affect USB 2.0 designs?
The AOZ8320DI-05 has a junction capacitance of 675pF at 0V and 1MHz. While acceptable for USB 2.0 VBUS line protection (DC/low-frequency), this value is too high for USB 2.0 data lines (D+/D−), which require <5pF devices. AOZ8320DI-05 must be placed only on power rails - never on high-speed signal paths.
Is AOZ8320DI-05 compliant with automotive AEC-Q200 requirements?
AOZ8320DI-05 is not AEC-Q200 qualified. Its qualification report confirms JESD22 reliability testing (HTRB, HAST, Temp Cycle) and MSL 1 rating, but no automotive-grade stress screening or temperature grade extension beyond -40°C to +125°C ambient is documented. Use in automotive applications requires additional system-level validation.
What is the marking code for AOZ8320DI-05 on the package?
The top-side marking for AOZ8320DI-05 is "C", as confirmed in the Part Marking table on page 11 of the Rev. 1.1 datasheet. This 1-character code distinguishes it from other variants in the AOZ8320DI family (e.g., "B" for -02, "D" for -08) and enables visual identification during inspection and assembly.
AOZ8320DI-05 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package/Case:
- 0603 (1608 Metric)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 16V
- Current - Peak Pulse (10/1000µs):
- 85A (8/20µs)
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- USB
- Capacitance @ Frequency:
- 675pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-DFN (1.6x.8)
AOZ8320DI-05 FAQ
1.How can I place an order for AOZ8320DI-05 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8320DI-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 AOZ8320DI-05 reliable?
The price and inventory of AOZ8320DI-05 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8320DI-05 is usually 5 days.
3.What payment methods are accepted for AOZ8320DI-05?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8320DI-05 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8320DI-05?
AOZ8320DI-05 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8320DI-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 AOZ8320DI-05?
For technical support, including AOZ8320DI-05 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8320DI-05 requirements.
6.How does Aetrix verify that AOZ8320DI-05 is sourced from the original manufacturer or authorized distributors?
All AOZ8320DI-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 AOZ8320DI-05 meets industry standards.
7.What is the process for return or replacement of AOZ8320DI-05?
All AOZ8320DI-05 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8320DI-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 AOZ8320DI-05 part is unused and in its original packaging.
Return procedure for AOZ8320DI-05:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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