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Alpha & Omega Semiconductor Inc. AOZ8208DI-05
- Part No.:
- AOZ8208DI-05
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 8-UFDFN Exposed Pad
- Datasheet:
-
AOZ8208DI-05.pdf
- Description:
- TVS DIODE 5VWM 9VC 8-DFN
- Quantity:
- Payment:
- Shipping:
Inventory:7,422
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Product details
Overview
AOZ8208DI-05 from Alpha & Omega Semiconductor is an eight-line unidirectional TVS diode array designed for ESD and transient protection of high-speed data lines. It features a 5.0V working peak reverse voltage, ±15kV IEC 61000-4-2 contact/air ESD rating, 7.0V max clamping voltage at 1A, 10pF typical capacitance at 0V, and DFN-8 (1.8 × 1.2 × 0.55 mm) package - deployed in portable GPS, digital cameras, and notebook computer I/O interfaces.
For engineers reviewing the AOZ8208DI-05 datasheet, pinout, applications, or equivalent options, key selection criteria include unidirectional line count (8), low clamping voltage under 5A surge, sub-12pF signal-line capacitance, RoHS-compliant green packaging, and compatibility with space-constrained high-speed interfaces requiring IEC 61000-4-2 Level 4 immunity.
Technical Context
The AOZ8208DI-05 implements eight independent unidirectional TVS diodes in a single DFN-8 package, each configured as cathode-to-GND for clamping positive transients to ground. Its Trench Vertical Structure [TVS]²™ technology enables fast response (<1 ns) and low dynamic impedance during ESD events.
It operates within -40°C to +85°C ambient, supports 5A 8/20µs lightning surge per IEC 61000-4-5, and maintains ≤0.1 µA reverse leakage at VRWM = 5.0V. The device is not intended for bidirectional protection or AC-coupled lines without external biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Peak Reverse Voltage | 5.0V - sets maximum continuous DC or signal swing before leakage rises significantly |
| Clamping Voltage @ 1A | 7.0V max - limits voltage seen by protected IC during ESD event, critical for 3.3V/5V interface survival |
| ESD Rating (IEC 61000-4-2) | ±15kV air / ±15kV contact - exceeds Level 4 immunity requirement for handheld electronics |
| Capacitance @ 0V, 1MHz | 10pF typical - low enough to avoid signal integrity degradation on USB 2.0 or HDMI DDC lines |
| Peak Pulse Current | 5A (8/20µs) - withstands lightning-induced surges per IEC 61000-4-5 |
| Package | DFN-8 (1.8 × 1.2 × 0.55 mm) - enables placement adjacent to connectors on dense PCBs |
| Operating Temp Range | -40°C to +85°C - qualified for consumer and industrial portable equipment environments |
Pinout & Package
AOZ8208DI-05 uses a leadless DFN-8 package with exposed thermal pad (non-electrical). Pin 1 is marked with a dot; pins are arranged in a single row with GND on pin 5 (center-bottom) and I/O lines on pins 1–4 and 6–8.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–4, 6–8 | I/O Line Cathode | Each connects to one protected unidirectional data line; clamps positive transients to GND |
| 5 | GND | Common cathode return path; must connect directly to low-inductance ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Eight unidirectional protection channels | Enables single-device protection of full 8-bit parallel bus or multi-lane interface without external routing |
| Trench Vertical Structure [TVS]²™ technology | Delivers <1 ns response time and stable clamping performance across temperature and lifetime |
| Low 10pF signal-line capacitance | Preserves rise/fall times on >100 Mbps data lines (e.g., SDIO, eMMC, camera MIPI clock) |
| 5.0V working voltage with 7.0V clamping | Provides 2.0V margin above 5V rail while limiting downstream IC stress during ESD |
| RoHS-compliant green package | Meets global environmental regulations without halogen content or Pb, supporting export compliance |
Applications
| Portable GPS Receivers | Digital Camera Interfaces |
|---|---|
Use Scenario: Protecting UART, I²C, and antenna RF feed lines from ESD during user handling and environmental discharge. IC Role / Device Role / Timing Role: Unidirectional transient suppressor placed between connector and baseband processor I/O pins. Use Value: Prevents latch-up or permanent damage to GPS baseband ICs during ±15kV contact discharge events. | Use Scenario: Shielding image sensor control lines (SCCB, power enable) and high-speed parallel data buses from ESD in compact camera modules. IC Role / Device Role / Timing Role: Eight-channel TVS array co-located with sensor flex connector to minimize trace inductance. Use Value: Maintains 10pF capacitance per line to avoid skew or jitter on 24 MHz pixel clock signals. |
| Notebook Computer Keypads | MP3 Player Audio/Data Lines |
Use Scenario: Guarding membrane keypad scan lines and backlight control signals against user-induced ESD in thin clamshell designs. IC Role / Device Role / Timing Role: Single AOZ8208DI-05 replaces eight discrete 0402 TVS diodes, reducing BOM count and layout area. Use Value: Enables 1.8 × 1.2 mm footprint saving over discrete solutions while meeting IEC 61000-4-2 Level 4. | Use Scenario: Protecting USB 2.0 D+/D−, headphone detect, and flash memory control lines in battery-powered audio players. IC Role / Device Role / Timing Role: Low-capacitance TVS array placed immediately after USB micro-B connector to shunt transients before PHY IC. Use Value: 7.0V clamping ensures 3.3V USB transceiver I/O remains within safe operating voltage during ±15kV air discharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar eight-line unidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ5.0A | Single-line SMA package; 5.0V VRWM, 14.4V VCL @ 1A; higher clamping, no multi-line integration | Requires eight discrete devices and more PCB area; suitable only when board space is unconstrained | Select if legacy design uses SMA footprints or requires higher surge rating (400W PPK) |
| SP1006-05UTG | 8-line unidirectional DFN-10; 5.0V VRWM, 12.5V VCL @ 1A; 15pF CJ; larger footprint (2.5 × 1.0 mm) | Higher clamping voltage reduces margin for 3.3V systems; higher capacitance impacts >50 Mbps lines | Select if dual-row layout or slightly higher surge tolerance (6A) is prioritized over signal integrity |
Compared with SMAJ5.0A and SP1006-05UTG, AOZ8208DI-05 delivers tighter clamping (7.0V vs. ≥12.5V), lower capacitance (10pF vs. ≥15pF), and integrated 8-line protection in the smallest DFN-8 footprint - making it optimal for space- and speed-critical portable interfaces.
Availability
AOZ8208DI-05 is available at Aetrix Electronics and suitable for portable GPS receivers, digital camera sensor interfaces, and notebook computer keypad protection requiring stable component supply and RoHS-compliant sourcing.
Supply support for AOZ8208DI-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 AOZ8208 family was developed to deliver high-density, low-capacitance ESD protection for miniaturized consumer electronics - emphasizing small-footprint integration, IEC 61000-4-2 compliance, and signal integrity preservation.
FAQ
What is the maximum clamping voltage of AOZ8208DI-05 under ESD stress?
The AOZ8208DI-05 has a maximum clamping voltage of 7.0V at 1A (8/20µs pulse), 8.0V at 5A, and 9.0V at 12A per I/O line. This low clamping level ensures protected 3.3V or 5V logic circuits remain within safe operating voltage during IEC 61000-4-2 contact discharge events. The clamping behavior is validated across -40°C to +85°C ambient conditions.
Can AOZ8208DI-05 protect bidirectional data lines like USB D+ and D−?
No, AOZ8208DI-05 provides unidirectional protection only - each I/O pin is a cathode tied to GND, suitable for protecting lines referenced to ground (e.g., GPIO, UART TX/RX, I²C SDA/SCL). For true bidirectional lines such as USB 2.0 differential pairs, a dedicated bidirectional TVS array like AOZ8212DI-05 is required instead of AOZ8208DI-05.
What is the recommended PCB layout practice for AOZ8208DI-05?
Place AOZ8208DI-05 as close as possible to the protected connector, with I/O traces routed directly to pins 1–4 and 6–8 and GND (pin 5) connected via short, wide trace to a solid ground plane. Avoid vias in protection paths; keep total trace inductance below 2 nH. Use the recommended land pattern from page 5 of the datasheet to ensure solder joint reliability and thermal performance of the DFN-8 package.
Does AOZ8208DI-05 meet automotive-grade reliability standards?
AOZ8208DI-05 is specified for -40°C to +85°C ambient operation and RoHS compliance but is not AEC-Q200 qualified. It is intended for consumer and industrial portable applications - not automotive ECUs or infotainment systems requiring AEC-Q200 stress testing. For automotive use, engineers should evaluate AOS's AEC-Q200-qualified TVS families separately from AOZ8208DI-05.
How does the capacitance of AOZ8208DI-05 vary with applied voltage?
AOZ8208DI-05 exhibits voltage-dependent capacitance: 10pF typical at 0V bias, decreasing to ~6pF at VRWM = 5.0V (per Figure on page 3 of datasheet). This variation is inherent to PN-junction TVS diodes and must be accounted for in high-frequency signal integrity analysis - especially for lines operating near 100 MHz where even 2–3pF change affects impedance matching.
AOZ8208DI-05 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package/Case:
- 8-UFDFN Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 8
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 9V
- Current - Peak Pulse (10/1000µs):
- 5A (8/20µs)
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 10pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN (1.8x1.2)
AOZ8208DI-05 FAQ
1.How can I place an order for AOZ8208DI-05 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8208DI-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 AOZ8208DI-05 reliable?
The price and inventory of AOZ8208DI-05 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8208DI-05 is usually 5 days.
3.What payment methods are accepted for AOZ8208DI-05?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8208DI-05 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8208DI-05?
AOZ8208DI-05 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8208DI-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 AOZ8208DI-05?
For technical support, including AOZ8208DI-05 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8208DI-05 requirements.
6.How does Aetrix verify that AOZ8208DI-05 is sourced from the original manufacturer or authorized distributors?
All AOZ8208DI-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 AOZ8208DI-05 meets industry standards.
7.What is the process for return or replacement of AOZ8208DI-05?
All AOZ8208DI-05 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8208DI-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 AOZ8208DI-05 part is unused and in its original packaging.
Return procedure for AOZ8208DI-05:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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