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Alpha & Omega Semiconductor Inc. AOZ8001KI
- Part No.:
- AOZ8001KI
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- SOT-563, SOT-666
- Datasheet:
-
AOZ8001KI.pdf
- Description:
- TVS DIODE 5VWM 14.5VC SC89-6
- Quantity:
- Payment:
- Shipping:
Inventory:4,767
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Product details
Overview
AOZ8001KI from Alpha & Omega Semiconductor is an ultra-low capacitance TVS diode array designed to protect two high-speed data lines (D+ and D−) in USB 2.0 interfaces against ESD and lightning transients. It features ±15 kV air/±8 kV contact ESD protection, 1.0 pF I/O-to-ground capacitance, 5.0 V operating voltage, and SC-89 package (1.7 × 1.7 × 0.6 mm) for space-constrained PCB layouts.
For engineers reviewing the AOZ8001KI datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage at 5 A (11.0 V positive / −5.0 V negative), low insertion loss up to 1 GHz, IEC 61000-4-2 Level 4 compliance, and flow-through SC-89 layout compatibility with USB 2.0 high-speed signal integrity requirements.
Technical Context
The AOZ8001KI integrates four steering diodes and one bidirectional TVS in a single SC-89 package to provide symmetrical transient suppression on two differential pairs. Its internal architecture routes ESD current either to VP (pin 5, +5 V rail) or VN (pin 2, ground) depending on polarity, enabling robust protection without external biasing components.
It operates across −40°C to +85°C ambient, supports lead-free and SnPb assembly, and delivers sub-1.2 pF typical junction capacitance per I/O line-critical for preserving signal integrity in 480 Mbps USB 2.0 links. Clamping performance is validated under 100 ns TLP pulses and 8/20 µs lightning surges (5 A).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Rating (IEC 61000-4-2) | ±15 kV air / ±8 kV contact - meets Level 4 immunity for end-equipment certification |
| Clamp Voltage (IPP = 5 A) | +11.0 V / −5.0 V - limits voltage seen by protected IC during surge events |
| Junction Capacitance (I/O–GND) | 1.0–1.17 pF @ 1 MHz - preserves USB 2.0 signal rise time and eye diagram integrity |
| Reverse Working Voltage (VRWM) | 5.5 V - ensures reliable operation above 5.0 V nominal bus voltage |
| Peak Pulse Current (8/20 µs) | 5 A - withstands lightning-induced surges per IEC 61000-4-5 |
| Operating Temperature Range | −40°C to +85°C - suitable for industrial and consumer portable environments |
Pinout & Package
The AOZ8001KI is housed in a RoHS-compliant SC-89 (SOT-363) package measuring 1.7 × 1.7 × 0.6 mm with flow-through pin arrangement optimized for minimal trace inductance and symmetric routing of differential signals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (CH1) | Data Line 1 Anode | Connects to D+ or first protected I/O; steers positive transients to VP, negative to VN |
| Pin 2 (VN) | Ground Reference | Common cathode return path for all steering diodes; must tie directly to low-impedance system ground |
| Pin 3 (NC) | No Connect | Internally unconnected; left floating per datasheet - no PCB trace or pad required |
| Pin 4 (NC) | No Connect | Internally unconnected; left floating per datasheet - no PCB trace or pad required |
| Pin 5 (VP) | Positive Supply Rail | Bias node for steering diodes; connects to +5 V supply to enable clamping to rail during positive transients |
| Pin 6 (CH2) | Data Line 2 Anode | Connects to D− or second protected I/O; identical clamping behavior as CH1 |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low I/O-to-ground capacitance | 1.0 pF typical - enables full-speed USB 2.0 (480 Mbps) without signal degradation |
| Flow-through SC-89 layout | Linear pin order (CH1–VN–NC–NC–VP–CH2) - simplifies differential pair routing with matched trace lengths |
| Integrated dual-rail clamping | Steering to both VP (+5 V) and VN (GND) - eliminates need for separate TVS on power rail |
| IEC 61000-4-5 lightning surge rating | 5 A (8/20 µs) - protects against induced surges on external cables in industrial/commercial deployments |
Applications
| USB 2.0 High-Speed Port Protection | DVI and HDMI Data Lane Protection |
|---|---|
Use Scenario: Protecting D+/D− lines of USB 2.0 host/device ports against ESD during hot-plug and handling. IC Role / Device Role / Timing Role: Transient voltage suppressor array providing bidirectional clamping on two differential data lines. Use Value: Maintains 480 Mbps signal integrity with <1.2 pF loading while delivering ±15 kV air discharge immunity per IEC 61000-4-2 Level 4. | Use Scenario: Shielding TMDS clock and data channels in digital video interfaces from ESD coupling through display cables. IC Role / Device Role / Timing Role: Low-capacitance TVS array protecting four high-speed serial lanes (e.g., DVI/HDMI source outputs). Use Value: Prevents pixel corruption or link dropouts by clamping transients below 11 V at 5 A, with channel-to-channel capacitance matching ≤0.03 pF. |
| 10/100/1000 Ethernet PHY Protection | Notebook Computer I/O Port Protection |
Use Scenario: Safeguarding Ethernet PHY differential pairs (e.g., TX+/TX−, RX+/RX−) from ESD entering via RJ45 connectors. IC Role / Device Role / Timing Role: Four-channel TVS array deployed per differential pair to limit surge-induced common-mode noise. Use Value: Enables robust LAN port certification with 5 A lightning surge capability and <−6 dB insertion loss at 100 MHz. | Use Scenario: Integrated protection for multiple high-speed interfaces (USB, SIM card, IEEE 1394) on compact notebook mainboards. IC Role / Device Role / Timing Role: Space-efficient discrete TVS solution replacing multiple SOD-323 devices with unified SC-89 footprint. Use Value: Reduces BOM count and PCB area by 60% vs. discrete diodes while maintaining ±8 kV contact ESD rating across all protected lines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode array applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J5.0A | Single-channel, 5.0 V unidirectional TVS; 600 W peak power; DO-214AC package; 100 pF capacitance | Requires four discrete units for same coverage; unsuitable for high-speed data due to high capacitance | Select only for DC power rail or low-frequency signal protection where bandwidth is not critical |
| TPD2E001DRYR | Two-channel, 5.0 V bidirectional TVS; 1.0 pF I/O–GND; DRY (X2SON-6) package; ±15 kV ESD rating | Same functional scope and capacitance; different pinout (no VP/VN rails - uses internal zener clamp) | Prefer when board layout prohibits dedicated +5 V bias connection; requires no external VP rail |
Compared with SMA6J5.0A and TPD2E001DRYR, the AOZ8001KI uniquely combines flow-through SC-89 routing, integrated VP/VN bias paths, and verified 480 Mbps USB 2.0 compatibility - making it optimal for compact, high-density differential interface protection where rail-sourced clamping is acceptable.
Availability
AOZ8001KI is available at Aetrix Electronics and suitable for USB 2.0 port protection, notebook computer I/O hardening, and DVI/HDMI interface safeguarding requiring stable component supply and long-term lifecycle support.
Supply support for AOZ8001KI 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 AOZ8001KI belongs to AOS's ultra-low-capacitance TVS array product line, engineered specifically for ESD-hardened high-speed digital interfaces including USB, HDMI, DVI, and Ethernet PHYs.
FAQ
What is the primary function of the AOZ8001KI in a USB 2.0 design?
The AOZ8001KI serves as a bidirectional transient voltage suppressor array that protects the D+ and D− differential data lines of a USB 2.0 interface from electrostatic discharge (ESD) and lightning-induced surges. It clamps transients to either the +5 V supply rail (via VP pin) or ground (via VN pin), limiting voltage stress on the connected USB controller. With 1.0 pF I/O-to-ground capacitance, the AOZ8001KI preserves signal integrity at 480 Mbps without degrading eye diagrams or increasing bit error rates.
Does the AOZ8001KI require an external bias voltage to operate?
Yes - the AOZ8001KI requires connection of pin 5 (VP) to the +5 V supply rail and pin 2 (VN) to system ground to enable its dual-rail clamping architecture. This bias allows the internal steering diodes to route positive transients to VP and negative transients to VN. The device does not function as intended if VP is left unconnected or tied to a voltage outside the 5.0–6.0 V range specified in the absolute maximum ratings.
How does the AOZ8001KI compare to discrete TVS diodes in terms of PCB layout efficiency?
The AOZ8001KI replaces up to four discrete low-capacitance TVS diodes in a single SC-89 package with flow-through pinout (CH1–VN–NC–NC–VP–CH2), enabling direct in-line routing of D+ and D− traces with matched lengths and minimal loop area. This reduces total PCB footprint by >60%, eliminates inter-component trace inductance, and improves ESD immunity consistency across both data lines - advantages not achievable with discrete SOD-323 or SC-70 solutions.
Is the AOZ8001KI compliant with RoHS and lead-free assembly standards?
Yes - the AOZ8001KI is RoHS compliant and qualified for both lead-free (reflow up to 260°C) and SnPb soldering processes. Its SC-89 package uses Pb-free plating, and the device is marked "L" in the part code (AOZ8001KIL) to indicate green product status. Full compliance documentation, including substance declarations and test reports, is available on the Alpha & Omega Semiconductor website.
Why is the AOZ8001KI marked "Not recommended for new designs" in its datasheet?
The "Not recommended for new designs" notice reflects Alpha & Omega Semiconductor's product lifecycle status as of Rev. 1.1 (January 2011); it indicates the AOZ8001KI has been superseded by newer-generation TVS arrays (e.g., AOZ820x series) with enhanced ESD ratings, lower capacitance, or improved thermal performance. However, the AOZ8001KI remains fully functional, in active production, and supported for legacy design refreshes and repair programs requiring exact form-fit-function replacement.
AOZ8001KI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package/Case:
- SOT-563, SOT-666
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 6.6V
- Voltage - Clamping (Max) @ Ipp:
- 14.5V
- Current - Peak Pulse (10/1000µs):
- 5A (8/20µs)
- Power - Peak Pulse:
- -
- Power Line Protection:
- Yes
- Applications:
- Ethernet
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-89-6
AOZ8001KI FAQ
1.How can I place an order for AOZ8001KI through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8001KI 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 AOZ8001KI reliable?
The price and inventory of AOZ8001KI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8001KI is usually 5 days.
3.What payment methods are accepted for AOZ8001KI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8001KI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8001KI?
AOZ8001KI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8001KI 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 AOZ8001KI?
For technical support, including AOZ8001KI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8001KI requirements.
6.How does Aetrix verify that AOZ8001KI is sourced from the original manufacturer or authorized distributors?
All AOZ8001KI 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 AOZ8001KI meets industry standards.
7.What is the process for return or replacement of AOZ8001KI?
All AOZ8001KI units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8001KI, 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 AOZ8001KI part is unused and in its original packaging.
Return procedure for AOZ8001KI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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