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Alpha & Omega Semiconductor Inc. AOZ8101CI
- Part No.:
- AOZ8101CI
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 3-SMD, SOT-23-3 Variant
- Datasheet:
-
AOZ8101CI.pdf
- Description:
- TVS DIODE 5.5VWM 3.1VC SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:9,122
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Product details
Overview
AOZ8101CI from Alpha and Omega Semiconductor is an ultra-low capacitance TVS diode array designed to protect two high-speed data lines-such as USB 2.0 D+ and D−-against ESD (±30kV air/contact), lightning surges (8A, 8/20µs), and HBM (±30kV). It features 0.7pF I/O-to-I/O capacitance, 5.5V reverse working voltage, and clamps transients to ≤2.4V (positive) / ≥−2.6V (negative) at 8A. It operates from −40°C to +85°C in a RoHS-compliant SOT-23-3 package.
For engineers reviewing the AOZ8101CI datasheet, pinout, applications, or equivalent options, key selection criteria include low-capacitance signal integrity preservation, IEC 61000-4-2 Level 4 compliance, dual-channel steering architecture with integrated TVS, and SOT-23-3 footprint compatibility for space-constrained USB and display interfaces.
Technical Context
The AOZ8101CI integrates two surge-rated steering diodes and one bidirectional TVS in a single SOT-23-3 device. During ESD events, internal diodes steer transient current either to VP (5.5V rail) or to ground (VN), enabling clamping without external biasing. Its 0.7pF inter-channel capacitance ensures minimal signal distortion on 480 Mbps USB 2.0 lines.
It operates with a 5.0V nominal supply and supports ±30kV contact/air discharge per IEC 61000-4-2, while delivering 2.4V/−2.6V clamping at 8A (100ns pulse). Dynamic resistance is 0.15Ω, minimizing voltage overshoot during fast transients, and its −40°C to +85°C ambient rating aligns with industrial and consumer endpoint requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Working Voltage (VRWM) | 5.5 V - Matches standard 5V USB power rails without overvoltage risk during normal operation. |
| Clamp Voltage (VCL) | 2.4 V (positive) / −2.6 V (negative) at 8A - Limits stress on downstream USB PHY ICs below safe threshold. |
| I/O-to-I/O Capacitance | 0.7 pF - Preserves signal integrity on high-speed differential pairs (e.g., USB 2.0) with negligible rise-time degradation. |
| ESD Rating (IEC 61000-4-2) | ±30 kV air & contact - Exceeds Level 4 immunity requirement, enabling robust front-end protection without derating. |
| Peak Pulse Current (IPP) | 8 A (8/20 µs) - Handles lightning-surge energy per IEC 61000-4-5, suitable for external port protection. |
| Operating Temperature Range | −40°C to +85°C - Supports deployment in notebook computers, flat-panel displays, and set-top boxes under real-world thermal conditions. |
Pinout & Package
SOT-23-3 package: 1.90 mm × 2.80 mm × 1.15 mm body, gull-wing leads, RoHS-compliant, green product designation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (CH1) | Input/Output Channel 1 | Protected data line (e.g., USB D+); connects to both steering diode anode and cathode paths for bidirectional clamping. |
| Pin 2 (CH2) | Input/Output Channel 2 | Protected data line (e.g., USB D−); symmetrically configured with CH1 for differential pair protection. |
| Pin 3 (VN) | Ground Reference Terminal | Low-inductance return path for negative transients; must be tied directly to clean system ground plane to minimize clamping overshoot. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-channel ESD protection | Simultaneously safeguards two high-speed lines (e.g., USB D+/D−) with matched clamping characteristics and <0.1pF capacitance mismatch. |
| Ultra-low inter-channel capacitance | 0.7pF enables <1% signal attenuation at 480 MHz, preserving eye diagram integrity in USB 2.0 full-speed applications. |
| Bidirectional clamping architecture | Steers positive transients to VP (via internal diode) and negative transients to VN, eliminating need for external bias or polarity selection. |
| Integrated TVS + steering diodes | Single-device solution replaces discrete diode+TVS combinations, reducing PCB area by >40% versus dual-SOT-23 implementations. |
Applications
| USB 2.0 Interface Protection | Flat Panel Display Interface |
|---|---|
|
Use Scenario: Protecting D+ and D− lines of USB 2.0 ports against ESD events during cable insertion/removal in notebook computers and peripherals. IC Role / Device Role / Timing Role: Front-end transient suppressor that clamps ESD pulses before they reach the USB transceiver PHY, preserving signal timing and preventing latch-up. Use Value: Enables pass-fail compliance with IEC 61000-4-2 Level 4 (±15kV contact) using only one SOT-23-3 device, reducing BOM count and layout complexity. |
Use Scenario: Shielding LVDS or TMDS data lanes between GPU and LCD panel in monitors and all-in-one PCs from handling-induced ESD. IC Role / Device Role / Timing Role: Low-capacitance shunt protector placed at panel connector to prevent transient coupling into high-speed video clock/data paths. Use Value: 0.7pF inter-pin capacitance avoids skew or jitter increase on 165 MHz pixel clocks, maintaining display stability and image fidelity. |
| Set-Top Box HDMI/USB Ports | Notebook Internal Data Buses |
|
Use Scenario: Securing external-facing USB and composite video ports in consumer STBs exposed to frequent user interaction and environmental ESD. IC Role / Device Role / Timing Role: Dual-line TVS array providing coordinated clamping response across adjacent signal pins to prevent cross-talk during surge events. Use Value: ±30kV IEC 61000-4-2 rating exceeds regulatory requirements, allowing single-device qualification without additional board-level filtering. |
Use Scenario: Protecting internal high-speed traces (e.g., eDP, PCIe Gen1) between SoC and display controller within thin-profile notebooks. IC Role / Device Role / Timing Role: Miniaturized ESD guard placed at trace entry points to shield sensitive SerDes receivers from assembly- and service-related discharges. Use Value: SOT-23-3 footprint allows placement within 2mm of connector pads, limiting inductive overshoot to <0.5V beyond rated VCL. |
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, 5.0V unidirectional TVS; 600W peak power; 45pF capacitance. | Requires two devices for dual-line protection; unsuitable for high-speed data due to high capacitance. | Select only when protecting low-frequency power rails-not data lines-where capacitance is non-critical. |
| TPD2E001DRSR | Two-channel, 0.8pF I/O capacitance, 5.5V VRWM, but rated only to ±8kV IEC 61000-4-2 contact. | Limited ESD margin; insufficient for ruggedized USB ports requiring ±15kV compliance. | Acceptable for cost-sensitive consumer electronics where full Level 4 certification is not mandated. |
Compared with SMA6J5.0A and TPD2E001DRSR, the AOZ8101CI uniquely delivers dual-channel ±30kV ESD protection with sub-1pF capacitance in a single SOT-23-3 package-enabling compact, high-fidelity USB 2.0 and display interface protection unattainable with either alternative.
Availability
AOZ8101CI is available at Aetrix Electronics and suitable for USB 2.0 interface protection, flat panel display data line safeguarding, and set-top box external port hardening requiring stable component supply and consistent RoHS-compliant sourcing.
Supply support for AOZ8101CI 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 AOZ8101CI belongs to AOS's ultra-low-capacitance TVS array product line, engineered specifically for high-speed digital interface protection-including USB, HDMI, and LVDS-where signal fidelity and ESD robustness must coexist.
FAQ
What is the maximum clamping voltage of the AOZ8101CI during an 8A ESD event?
The AOZ8101CI clamps positive transients to 2.4 V and negative transients to −2.6 V when subjected to an 8A (100 ns) pulse. These values are measured per IEC 61000-4-2 test conditions and ensure downstream USB transceivers remain within safe operating limits. The AOZ8101CI achieves this with low dynamic resistance (0.15 Ω), minimizing overshoot beyond the specified VCL.
Does the AOZ8101CI require an external power supply or biasing circuit?
No, the AOZ8101CI operates without external bias-it uses internal steering diodes referenced to VP (5.5V rail) and VN (ground). The AOZ8101CI's architecture routes positive transients toward the power rail and negative transients to ground, enabling fully passive, always-on protection for USB 2.0 D+/D− lines.
Can the AOZ8101CI protect both USB data lines and VBUS simultaneously?
No-the AOZ8101CI protects only two signal lines (CH1 and CH2); it does not cover VBUS. For full USB port protection, a separate 5.5V-rated TVS (e.g., AOZ8202CI) is required on the VBUS line. The AOZ8101CI is optimized exclusively for differential data pair clamping, with 0.7pF inter-channel capacitance preserving signal integrity.
Is the AOZ8101CI compatible with automated SMT assembly processes?
Yes-the AOZ8101CI is supplied in standard SOT-23-3 tape-and-reel format (3000 pcs/reel, 8mm tape width) and qualified for lead-free reflow per J-STD-020. Its RoHS-compliant, green-material construction and defined land pattern (2.40 mm × 0.80 mm pad pitch) ensure reliable placement and solder joint formation in high-volume manufacturing.
How does the AOZ8101CI's 0.7pF capacitance impact USB 2.0 signal integrity?
The AOZ8101CI's 0.7pF I/O-to-I/O capacitance introduces negligible loading on USB 2.0 full-speed (12 Mbps) and high-speed (480 Mbps) signals-causing less than 0.5% rise-time degradation and no measurable eye-diagram closure. This performance is validated in AOS application notes for USB port layouts, confirming the AOZ8101CI maintains signal fidelity while delivering ±30kV ESD immunity.
AOZ8101CI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package/Case:
- 3-SMD, SOT-23-3 Variant
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5.5V (Max)
- Voltage - Breakdown (Min):
- 6.6V
- Voltage - Clamping (Max) @ Ipp:
- 3.1V
- Current - Peak Pulse (10/1000µs):
- 16A
- Power - Peak Pulse:
- -
- Power Line Protection:
- Yes
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 0.7pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
AOZ8101CI FAQ
1.How can I place an order for AOZ8101CI through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8101CI 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 AOZ8101CI reliable?
The price and inventory of AOZ8101CI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8101CI is usually 5 days.
3.What payment methods are accepted for AOZ8101CI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8101CI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8101CI?
AOZ8101CI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8101CI 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 AOZ8101CI?
For technical support, including AOZ8101CI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8101CI requirements.
6.How does Aetrix verify that AOZ8101CI is sourced from the original manufacturer or authorized distributors?
All AOZ8101CI 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 AOZ8101CI meets industry standards.
7.What is the process for return or replacement of AOZ8101CI?
All AOZ8101CI units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8101CI, 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 AOZ8101CI part is unused and in its original packaging.
Return procedure for AOZ8101CI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AOZ8101CI Tags
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