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Alpha & Omega Semiconductor Inc. AOZ8915CI
- Part No.:
- AOZ8915CI
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- SOT-23-6
- Datasheet:
-
AOZ8915CI.pdf
- Description:
- TVS DIODE 5VWM 12VC SOT-23-6
- Quantity:
- Payment:
- Shipping:
Inventory:7,822
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Product details
Overview
AOZ8915CI from Alpha and Omega Semiconductor is an ultra-low capacitance TVS diode array designed to protect four high-speed I/O lines (e.g., USB 2.0 differential pairs) against ESD, EFT, and lightning transients. It features 1.5 pF max I/O-to-ground capacitance, 5.0 V working voltage, ±24 kV contact/±30 kV air ESD rating per IEC 61000-4-2, and clamps to ≤12.0 V at 5 A (8/20 µs), enabling signal integrity up to 3 GHz.
For engineers reviewing the AOZ8915CI datasheet, pinout, applications, or equivalent options, key selection criteria include low insertion loss at 2.45 GHz, sub-1.5 pF channel capacitance, SOT23-6L footprint compatibility, and verified compliance with IEC 61000-4-2 Level 4, IEC 61000-4-4 (40 A), and IEC 61000-4-5 (12 A).
Technical Context
The AOZ8915CI integrates eight surge-rated steering diodes and one internal TVS in a single SOT23-6L package, routing transient energy from I/O lines to VN (common cathode node) or ground during overvoltage events. Its architecture enables bidirectional clamping with separate positive/negative clamp voltages (e.g., +12.0 V / −6.0 V at 5 A).
Designed for DC-coupled 5 V systems, it operates across −40°C to +85°C ambient, supports 100 ns TLP testing, and maintains <1.0 µA reverse leakage at VRWM = 5.0 V - critical for preserving signal fidelity on USB 2.0 and Gigabit Ethernet interfaces without loading.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Working Voltage (VRWM) | 5.0 V - matches standard 5 V USB 2.0 supply rails, ensuring no false triggering during normal operation. |
| I/O-to-Ground Capacitance (Cj) | 1.0–1.5 pF @ 1 MHz - preserves signal rise/fall times and minimizes distortion on 480 Mbps USB 2.0 data lines. |
| ESD Rating (IEC 61000-4-2) | ±24 kV contact / ±30 kV air - exceeds Level 4 immunity requirements for consumer electronics end-equipment. |
| Clamp Voltage (VCL) | +12.0 V / −6.0 V @ 5 A, 100 ns - limits stress on downstream PHY ICs during multi-pulse ESD events. |
| Insertion Loss | <−0.5 dB up to 3 GHz - ensures minimal RF attenuation in high-frequency data paths like HDMI or USB 2.0. |
| Operating Temperature | −40°C to +85°C ambient - supports deployment in set-top boxes, notebooks, and flat-panel displays with passive cooling. |
Pinout & Package
SOT23-6L package: 2.9 mm × 1.6 mm × 1.1 mm body, gull-wing leads, RoHS-compliant and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (CH1) | I/O Channel 1 Anode | Input/output line 1 - connects directly to USB D+ or Ethernet TP1+ trace. |
| 2 (VN) | Common Cathode Node | Shared cathode for all eight steering diodes - ties to system ground or 5 V rail depending on protection scheme. |
| 3 (CH2) | I/O Channel 2 Anode | Input/output line 2 - pairs with CH1 for differential USB 2.0 signaling. |
| 4 (CH4) | I/O Channel 4 Anode | Input/output line 4 - used for second differential pair (e.g., USB ID or auxiliary signal). |
| 5 (NC) | No Connect | Internally unconnected - must remain floating; no PCB trace or solder mask opening required. |
| 6 (CH3) | I/O Channel 3 Anode | Input/output line 3 - completes four-channel protection set (e.g., USB D−, TP2−, etc.). |
Key Features
| Feature | Design Value |
|---|---|
| Eight-diode + TVS architecture | Enables simultaneous bidirectional clamping across four independent I/O lines without external components. |
| 1.5 pF max I/O-to-ground capacitance | Prevents signal degradation on 480 Mbps USB 2.0 links, meeting eye-diagram mask compliance. |
| ±30 kV HBM ESD rating | Protects assembly-line handling and field operation in unshielded consumer environments. |
| Low 0.85 V forward voltage (IF = 15 mA) | Reduces power dissipation during clamping and avoids forward-bias interference with logic thresholds. |
| −40°C to +85°C operating range | Validated for use in thermally constrained enclosures such as digital TVs and mobile computing devices. |
Applications
| USB 2.0 Ports | Monitors and Flat Panel Displays |
|---|---|
Use Scenario: Protecting upstream/downstream USB 2.0 connectors on notebook docking stations against repeated ESD exposure during cable insertion. IC Role / Device Role / Timing Role: Transient voltage suppressor array providing bidirectional clamping on D+/D− and ID/VBUS lines. Use Value: Maintains 480 Mbps data throughput with <−0.3 dB insertion loss at 240 MHz while surviving >10,000 contact discharges. | Use Scenario: Shielding LVDS or TMDS video interface pins on display controller boards from factory-floor ESD. IC Role / Device Role / Timing Role: Low-capacitance ESD clamp for high-speed parallel video buses requiring sub-2 pF loading. Use Value: Prevents pixel corruption and hot-plug detection failure by limiting transient overshoot to <12 V at 5 A. |
| Set-Top Boxes | Video Graphics Cards |
Use Scenario: Safeguarding HDMI or USB OTG ports on IPTV set-top boxes exposed to user-handled remote controls and accessories. IC Role / Device Role / Timing Role: Four-channel TVS array protecting differential signaling pairs against air-gap discharges near plastic enclosures. Use Value: Achieves IEC 61000-4-2 Level 4 compliance without degrading 1080p60 video timing margins. | Use Scenario: Adding secondary ESD protection on PCIe or DisplayPort lanes adjacent to GPU core voltage regulators. IC Role / Device Role / Timing Role: Signal-line TVS with 1.0 pF inter-pin capacitance to avoid crosstalk-induced jitter on 5 Gbps serial links. Use Value: Reduces bit-error rate under EFT stress (IEC 61000-4-4, 40 A) while maintaining PCIe Gen2 eye opening. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode array applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Semtech RClamp0524P.TCT | 1.0 pF max I/O-to-ground capacitance; 5.5 V VRWM; ±30 kV ESD rating; SLP1610P4 package (1.6 × 1.0 mm). | Smaller footprint but requires tighter layout control; optimized for space-constrained mobile PCBs. | Select when board area is constrained and 5.5 V rail compatibility is acceptable. |
| ON Semiconductor ESD7L5.0DT5G | Single-channel device (vs. 4-channel AOZ8915CI); 0.5 pF capacitance; SOD-523 package; same 5.0 V VRWM. | Requires four discrete placements for full USB 2.0 protection; higher assembly cost and layout complexity. | Select only for legacy designs where SOD-523 placement already exists and channel count is not consolidated. |
Compared with RClamp0524P.TCT and ESD7L5.0DT5G, the AOZ8915CI delivers integrated four-channel protection in SOT23-6L - reducing BOM count and PCB area while maintaining 5.0 V compatibility and 3 GHz signal integrity, making it optimal for cost-sensitive consumer electronics with standardized footprints.
Availability
AOZ8915CI is available at Aetrix Electronics and suitable for USB 2.0 ports, monitors and flat panel displays, and set-top boxes requiring stable component supply, long-term lifecycle support, and RoHS/halogen-free compliance.
Supply support for AOZ8915CI 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 AOZ8915CI belongs to AOS's ultra-low-capacitance TVS array product line, engineered specifically for high-speed digital interface protection in consumer electronics where ESD robustness and signal fidelity must coexist.
FAQ
What is the maximum operating temperature for the AOZ8915CI?
The AOZ8915CI has a specified ambient operating temperature range of −40°C to +85°C. Its junction temperature can reach up to +125°C under transient conditions. This rating is validated per AOS Rev. 4.1 datasheet and supports deployment in thermally demanding consumer devices such as digital TVs and notebook computers where passive cooling is used. The AOZ8915CI maintains electrical performance within spec across this full range.
Does the AOZ8915CI support USB 2.0 full-speed and high-speed data rates?
Yes, the AOZ8915CI supports both USB 2.0 full-speed (12 Mbps) and high-speed (480 Mbps) operation. Its 1.5 pF max I/O-to-ground capacitance and <−0.5 dB insertion loss up to 3 GHz preserve signal integrity and meet USB-IF eye diagram requirements. The AOZ8915CI is explicitly validated for USB 2.0 applications in its datasheet, including Digital TVs, DVD players, and mobile computing devices.
How many I/O lines does the AOZ8915CI protect, and how are they configured?
The AOZ8915CI protects four independent I/O lines using eight internal steering diodes and one shared TVS element. Pins CH1–CH4 serve as anode terminals for each protected line, while VN is the common cathode node. This configuration enables bidirectional clamping per channel. The AOZ8915CI datasheet confirms this four-channel structure in both the Pin Configuration diagram and Applications section.
Is the AOZ8915CI RoHS compliant and halogen free?
Yes, the AOZ8915CI is RoHS compliant and halogen free, as confirmed in the Ordering Information table on page 2 of the official AOS datasheet (Rev. 4.1). It uses AOS Green Product materials with reduced halogen content and meets EU RoHS Directive 2011/65/EU requirements. This makes the AOZ8915CI suitable for global consumer electronics markets with strict environmental compliance mandates.
What is the clamping voltage of the AOZ8915CI under a 5 A, 8/20 µs lightning surge?
The AOZ8915CI exhibits a channel clamp voltage of 8.5 V under a 5 A, 8/20 µs lightning surge condition, measured between any I/O pin and ground (per Electrical Characteristics table, page 3). This value ensures downstream USB PHY ICs remain within safe voltage tolerances during IEC 61000-4-5 transient events. The AOZ8915CI datasheet specifies this parameter with test conditions and units, confirming its reliability for surge protection design.
AOZ8915CI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package/Case:
- SOT-23-6
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 4
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 12V
- Current - Peak Pulse (10/1000µs):
- 12A (8/20µs)
- Power - Peak Pulse:
- -
- Power Line Protection:
- Yes
- Applications:
- Ethernet, USB
- Capacitance @ Frequency:
- 1pF @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
AOZ8915CI FAQ
1.How can I place an order for AOZ8915CI through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8915CI 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 AOZ8915CI reliable?
The price and inventory of AOZ8915CI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8915CI is usually 5 days.
3.What payment methods are accepted for AOZ8915CI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8915CI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8915CI?
AOZ8915CI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8915CI 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 AOZ8915CI?
For technical support, including AOZ8915CI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8915CI requirements.
6.How does Aetrix verify that AOZ8915CI is sourced from the original manufacturer or authorized distributors?
All AOZ8915CI 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 AOZ8915CI meets industry standards.
7.What is the process for return or replacement of AOZ8915CI?
All AOZ8915CI units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8915CI, 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 AOZ8915CI part is unused and in its original packaging.
Return procedure for AOZ8915CI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AOZ8915CI Tags
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