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Alpha & Omega Semiconductor Inc. AOZ8300CI-05
- Part No.:
- AOZ8300CI-05
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- SOT-23-6
- Datasheet:
-
AOZ8300CI-05.pdf
- Description:
- TVS DIODE 2.5VWM 9VC SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,548
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Product details
Overview
AOZ8300CI-05 from Alpha & Omega Semiconductor is an ultra-low capacitance TVS diode array designed to protect four high-speed data lines from ESD, lightning, and EFT transients. It features 2.5 V reverse working voltage, ±30 kV IEC 61000-4-2 air/contact discharge rating, 3.5 V clamping voltage at 5 A, 2.5–3.5 pF junction capacitance, and SOT-23-6 packaging for compact board integration in USB 2.0 and Ethernet interfaces.
For engineers reviewing the AOZ8300CI-05 datasheet, pinout, applications, or equivalent options, key selection criteria include channel clamp voltage under 5 A/10 A surges, input capacitance matching ≤0.2 pF between I/O pins, IEC 61000-4-5 (20 A, 8/20 μs) lightning immunity, and compatibility with -40 °C to +85 °C industrial ambient operation.
Technical Context
The AOZ8300CI-05 integrates eight surge-rated steering diodes and a bidirectional TVS in a single SOT-23-6 package to protect four independent I/O lines. Its architecture routes transient energy to VIN or ground via low-leakage (0.1 μA @ 2.5 V) steering paths, enabling clamping at 3.5 V (positive) and -3.5 V (negative) under 5 A TLP stress.
It meets IEC 61000-4-2 Level 4 (±30 kV air/contact), IEC 61000-4-5 (20 A, 8/20 μs), and IEC 61000-4-4 (40 A, 5/50 ns) standards while maintaining sub-4 pF total capacitance per channel - critical for preserving signal integrity on USB 2.0 (480 Mbps) and Gigabit Ethernet (1.25 Gbps) links.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Working Voltage (VRWM) | 2.5 V - sets maximum continuous DC operating voltage before conduction begins on protected lines |
| Clamp Voltage (VCL) | 3.5 V / -3.5 V at 5 A - limits transient overvoltage seen by downstream PHY or controller during ESD events |
| Junction Capacitance (Cj) | 2.5–3.5 pF @ 0 V, 1 MHz - ensures minimal signal distortion on high-speed differential pairs |
| Channel Input Capacitance Matching (ΔCj) | ≤0.2 pF - maintains skew control and common-mode rejection across protected I/O pairs |
| ESD Rating (IEC 61000-4-2) | ±30 kV air / ±30 kV contact - exceeds Level 4 immunity requirement for industrial and consumer end equipment |
| Lightning Surge Rating | 20 A (8/20 μs) per IEC 61000-4-5 - withstands induced surges from nearby lightning strikes on Ethernet or video cables |
| Operating Temperature Range | -40 °C to +85 °C ambient - supports deployment in uncontrolled environments including notebooks and flat-panel displays |
Pinout & Package
SOT-23-6 package: 2.90 mm × 1.60 mm × 1.10 mm body, 0.95 mm pitch, halogen-free and RoHS-compliant, compatible with SnPb and lead-free reflow processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (CH1) | Protected I/O Channel 1 | Input/output line routed through internal steering diode to VIN or GND during transient |
| 2 (VN) | Negative Supply / Ground Reference | Common cathode connection for all negative-side steering diodes; ties to system ground plane |
| 3 (CH2) | Protected I/O Channel 2 | Second differential or single-ended data line protected with matched capacitance and clamping |
| 4 (CH4) | Protected I/O Channel 4 | Fourth I/O line sharing same clamping characteristics and layout symmetry as CH1–CH3 |
| 5 (NC) | No Connect | Internally unconnected pin; must remain floating - no PCB trace or solder mask opening required |
| 6 (CH3) | Protected I/O Channel 3 | Third protected line with identical electrical specs; enables full four-line protection in minimal footprint |
Key Features
| Feature | Design Value |
|---|---|
| Four-channel I/O protection | Single SOT-23-6 device replaces four discrete TVS diodes, reducing BOM count and PCB area by >60% |
| Ultra-low inter-channel capacitance mismatch | ≤0.2 pF variation ensures <1 ps skew between protected differential pairs in DVI or USB 2.0 |
| Bidirectional clamping with low VCL | 3.5 V / -3.5 V clamp at 5 A prevents latch-up or damage to 3.3 V tolerant PHYs and controllers |
| IEC 61000-4-5 compliant surge handling | 20 A (8/20 μs) capability allows direct placement at RJ45 or HDMI connectors without external current-limiting resistors |
| Halogen-free & RoHS-compliant construction | Meets IPC-1752A material declaration requirements for automotive and medical OEM supply chains |
Applications
| USB 2.0 Port Protection | DVI Interface Protection |
|---|---|
Use Scenario: Protecting DP/DM and VBUS lines of a notebook USB 2.0 upstream port against ESD during hot-plug insertion. IC Role / Device Role / Timing Role: Transient voltage suppressor array routing ESD current away from USB transceiver and PMIC via low-inductance steering paths. Use Value: Maintains 480 Mbps signaling integrity with <3.5 pF loading per line and prevents PHY reset or brownout during ±30 kV contact discharge. | Use Scenario: Shielding TMDS clock and data channels on a digital video interface between GPU and flat-panel display. IC Role / Device Role / Timing Role: Four-channel TVS clamping transient overvoltage on each TMDS pair while preserving differential impedance and common-mode noise rejection. Use Value: Enables compliance with IEC 61000-4-2 Level 4 without degrading eye diagram margin or increasing bit error rate at 1.65 Gbps. |
| Gigabit Ethernet PHY Protection | Notebook Internal Data Bus Protection |
Use Scenario: Safeguarding TP1+/TP1− through TP4+/TP4− lines of a 10/100/1000BASE-T Ethernet PHY connected to an RJ45 magnetics module. IC Role / Device Role / Timing Role: Low-capacitance TVS array placed immediately after magnetics to clamp lightning-induced surges before reaching PHY silicon. Use Value: Withstands 20 A (8/20 μs) IEC 61000-4-5 surges while adding <4 pF per line - avoids signal reflection or jitter accumulation in 125 MHz PAM-5 signaling. | Use Scenario: Securing LVDS or FPD-Link II video data lanes between baseband processor and display panel inside thin-profile notebooks. IC Role / Device Role / Timing Role: Compact four-line protector minimizing trace length from connector to IC, reducing antenna effect during ESD events. Use Value: Achieves ±30 kV ESD immunity with 2.5–3.5 pF per channel and -40 °C to +85 °C operation - critical for hinge-flex reliability and thermal cycling endurance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode array applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J33A-Q | Single-channel, 33 V VRWM, 52.3 V clamping at 5.8 A - higher voltage rating, no multi-line integration | Requires four separate devices and larger PCB area; unsuitable for high-speed data due to ~300 pF capacitance | Only viable for low-frequency power rail protection where speed and capacitance are non-critical |
| SP1003-04UTG | Four-channel, 3.3 V VRWM, 12 pF typical Cj - higher capacitance than AOZ8300CI-05's 2.5–3.5 pF | Acceptable for USB 1.1 or RS-485 but causes measurable eye closure on USB 2.0 or DVI links above 400 Mbps | Prefer AOZ8300CI-05 when signal bandwidth >200 MHz or inter-pair capacitance matching ≤0.2 pF is required |
Compared with SMA6J33A-Q and SP1003-04UTG, the AOZ8300CI-05 uniquely delivers four-channel protection with sub-4 pF capacitance, ±30 kV ESD rating, and 3.5 V clamping - making it the only option qualified for space-constrained, high-speed interfaces like USB 2.0 and DVI without compromising signal fidelity or layout efficiency.
Availability
AOZ8300CI-05 is available at Aetrix Electronics and suitable for USB 2.0 port protection, DVI interface hardening, and Gigabit Ethernet PHY safeguarding requiring stable component supply across industrial, computing, and display product lifecycles.
Supply support for AOZ8300CI-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 AOZ8300CI-05 belongs to AOS's ultra-low capacitance TVS array product line, engineered specifically for ESD and surge protection of high-speed serial interfaces without degrading signal integrity.
FAQ
What is the maximum clamping voltage of the AOZ8300CI-05 under a 10 A transient?
The AOZ8300CI-05 exhibits a maximum positive clamping voltage of 4.5 V and negative clamping voltage of -5 V when subjected to a 10 A, 100 ns TLP pulse. This performance is measured per IEC 61000-4-2 test conditions and ensures safe operation for 3.3 V logic interfaces without overstressing downstream PHY circuitry. The AOZ8300CI-05 maintains this clamping behavior across its full -40 °C to +85 °C operating range.
Does the AOZ8300CI-05 support bidirectional ESD protection on all four channels?
Yes, the AOZ8300CI-05 provides symmetrical bidirectional clamping on all four protected channels (CH1–CH4), with identical ±3.5 V clamping at 5 A for both polarities. Its internal architecture uses matched steering diodes referenced to VN (ground) and VIN (not present on AOZ8300CI-05 - tied internally to VCC in other variants), enabling robust protection against contact and air discharge events regardless of transient polarity. This behavior is confirmed in the Electrical Characteristics table on page 3 of the AOZ8300 datasheet.
Can the AOZ8300CI-05 be used for HDMI interface protection?
No - the AOZ8300CI-05 is not recommended for HDMI protection because HDMI 1.4+ requires <0.5 pF capacitance per lane to maintain signal integrity at 3.4 Gbps, while the AOZ8300CI-05 specifies 2.5–3.5 pF per channel. Its design targets USB 2.0 (480 Mbps), DVI (1.65 Gbps), and 10/100/1000BASE-T (125 MHz), where higher capacitance is tolerable. For HDMI, AOS offers lower-capacitance alternatives such as the AOZ8200 series. The AOZ8300CI-05 remains optimal for its intended applications.
What is the function of the NC pin (Pin 5) on the AOZ8300CI-05?
Pin 5 of the AOZ8300CI-05 is a no-connect (NC) terminal with no internal bond wire or circuit connection. It must remain electrically floating - neither tied to ground nor routed on the PCB. This pin exists for mechanical symmetry and package compatibility within the SOT-23-6 footprint family. Leaving Pin 5 unconnected avoids parasitic coupling and ensures consistent thermal and electrical performance across all four protected channels in the AOZ8300CI-05.
How does the AOZ8300CI-05 achieve ±30 kV ESD protection while maintaining low capacitance?
The AOZ8300CI-05 achieves ±30 kV ESD immunity through optimized silicon geometry and low-leakage PN junction design, enabling high breakdown uniformity without large junction areas that increase capacitance. Its 2.5–3.5 pF capacitance results from minimized active die area and proprietary passivation layers - verified by TLP testing per IEC 61000-4-2. Unlike conventional TVS arrays, the AOZ8300CI-05 uses integrated steering diodes with tightly controlled forward voltage (0.70–0.85 V) to reduce trigger delay and overshoot, allowing robust protection without sacrificing high-speed signal fidelity.
AOZ8300CI-05 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package/Case:
- SOT-23-6
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 4
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 2.5V (Max)
- Voltage - Breakdown (Min):
- 2.8V
- Voltage - Clamping (Max) @ Ipp:
- 9V
- Current - Peak Pulse (10/1000µs):
- 20A (8/20µs)
- Power - Peak Pulse:
- 450W
- Power Line Protection:
- Yes
- Applications:
- Ethernet
- Capacitance @ Frequency:
- 2.5pF @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
AOZ8300CI-05 FAQ
1.How can I place an order for AOZ8300CI-05 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8300CI-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 AOZ8300CI-05 reliable?
The price and inventory of AOZ8300CI-05 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8300CI-05 is usually 5 days.
3.What payment methods are accepted for AOZ8300CI-05?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8300CI-05 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8300CI-05?
AOZ8300CI-05 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8300CI-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 AOZ8300CI-05?
For technical support, including AOZ8300CI-05 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8300CI-05 requirements.
6.How does Aetrix verify that AOZ8300CI-05 is sourced from the original manufacturer or authorized distributors?
All AOZ8300CI-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 AOZ8300CI-05 meets industry standards.
7.What is the process for return or replacement of AOZ8300CI-05?
All AOZ8300CI-05 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8300CI-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 AOZ8300CI-05 part is unused and in its original packaging.
Return procedure for AOZ8300CI-05:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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