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Alpha & Omega Semiconductor Inc. AOZ8204KI
- Part No.:
- AOZ8204KI
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- SOT-563, SOT-666
- Datasheet:
-
AOZ8204KI.pdf
- Description:
- TVS DIODE 5VWM 7.5VC SC89-6
- Quantity:
- Payment:
- Shipping:
Inventory:9,180
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Product details
Overview
AOZ8204KI from Alpha & Omega Semiconductor is a four-line unidirectional/bidirectional TVS diode array for ESD and transient protection of high-speed data lines. It features 5.0V reverse working voltage, ±30kV IEC 61000-4-2 contact/air ESD rating, 7.0V clamping voltage at 15A, 17pF typical junction capacitance, and SC-89 package (1.7 × 1.7 × 0.6 mm). It is used in portable GPS, digital cameras, and notebook computer I/O interfaces.
For engineers reviewing the AOZ8204KI datasheet, pinout, applications, or equivalent options, key selection criteria include bidirectional/unidirectional line configuration flexibility, low clamping voltage under 15A transients, sub-20pF capacitance for high-speed signal integrity, and RoHS-compliant SC-89 footprint compatibility with space-constrained portable designs.
Technical Context
The AOZ8204KI implements Trench Vertical Structure [TVS]²™ technology to achieve fast response and low clamping voltage during ESD events. Its internal architecture supports two distinct configurations: four independent unidirectional channels (pins 1/3/4/6 to pin 2 ground) or two bidirectional channels (pins 1/3 to pins 4/6 ground).
It operates across –40°C to +85°C ambient, with junction temperature rated to +125°C. Electrical behavior is defined by 5.0V VRWM, 8.0V VBR at 1mA, 0.1µA IR at 5V, and 0.70–0.85V VF at 15mA - all specified at 25°C with bold values covering full industrial temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Working Voltage (VRWM) | 5.0 V - matches standard 5V logic supply rails without leakage or false triggering |
| Clamping Voltage (VCL) | 7.0 V at 15A, 100ns pulse - limits transient overvoltage to safe levels for downstream 5V-tolerant ICs |
| Junction Capacitance (Cj) | 17 pF at 0V - enables use on USB 2.0, HDMI, and other >100 Mbps interfaces without signal degradation |
| ESD Rating (IEC 61000-4-2) | ±30 kV air / ±30 kV contact - exceeds Level 4 immunity requirements for handheld consumer electronics |
| Package Dimensions | 1.7 × 1.7 × 0.6 mm SC-89 - fits tight pitch layouts where board area is constrained to <3 mm² per device |
| Operating Temperature Range | –40°C to +85°C ambient - suitable for extended outdoor and automotive cabin environments |
Pinout & Package
AOZ8204KI uses the RoHS-compliant SC-89 (6-lead) surface-mount package, measuring 1.7 mm × 1.7 mm × 0.6 mm with gull-wing leads. Pin 1 is marked by a dot; top view orientation follows standard SC-89_6L layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | I/O1 (unidir) / Channel A+ (bidir) | Primary protected line input; connects to data line in unidirectional mode or positive side of bidirectional pair |
| 2 | Ground (unidir common) | Common cathode return path for all four unidirectional channels; must connect directly to ground plane |
| 3 | I/O2 (unidir) / Channel B+ (bidir) | Second protected line input; shares same grounding scheme as Pin 1 in unidirectional config |
| 4 | Ground (bidir common) | Secondary ground terminal used only in bidirectional mode; paired with Pin 6 for dual-channel symmetry |
| 5 | No Connect (NC) | Internally unconnected; left floating or tied to ground per layout best practice to reduce parasitics |
| 6 | I/O3/I/O4 (unidir) / Channel A−/B− (bidir) | Supports either third/fourth unidirectional line or negative side of bidirectional channels; routing determines function |
Key Features
| Feature | Design Value |
|---|---|
| Trench Vertical Structure [TVS]²™ technology | Enables 7.0V clamping at 15A with sub-nanosecond response, reducing stress on protected ICs beyond conventional planar TVS |
| Configurable channel topology | Single device supports either four unidirectional lines (1/3/4/6 → 2) or two bidirectional lines (1/3 → 4/6), minimizing BOM count |
| Low 17pF junction capacitance | Maintains signal integrity on high-speed interfaces up to 480 Mbps (USB 2.0) without measurable insertion loss above –3dB |
| ±30kV ESD robustness | Exceeds IEC 61000-4-2 Level 4 by 100%, enabling single-device compliance in final product without secondary protection stages |
| SC-89 footprint | 1.7×1.7mm body allows placement adjacent to micro-B USB or mini-HDMI connectors without trace detours or layer transitions |
Applications
| USB 2.0 Data Lines | HDMI DDC/CEC Channels |
|---|---|
Use Scenario: Protecting differential USB 2.0 D+/D− lines in smartphone docking stations against repeated plug/unplug ESD events. IC Role / Device Role: Unidirectional TVS array clamping transients on both data lines independently while preserving signal rise/fall times. Use Value: 17pF capacitance avoids USB eye diagram distortion; 7.0V clamping prevents PHY latch-up during ±30kV contact discharge. | Use Scenario: Shielding HDMI DDC (I²C) and CEC control lines in smart TVs from ESD coupling via HDMI cables. IC Role / Device Role: Bidirectional protection of two low-voltage control channels using Pins 1/3 as inputs and Pins 4/6 as grounds. Use Value: Dual-channel mode eliminates need for two separate TVS devices; 5.0V VRWM ensures compatibility with 3.3V I²C logic levels. |
| Digital Camera Interface | Portable GPS Serial Bus |
Use Scenario: Safeguarding MIPI CSI-2 clock/data lanes between image sensor and SoC in compact action cameras. IC Role / Device Role: Four-line unidirectional configuration (Pins 1/3/4/6 → Pin 2) protects parallel high-speed signals with minimal board area. Use Value: 1.7×1.7mm SC-89 package fits within 2mm margin of camera module edge; low leakage (<0.1µA) avoids battery drain. | Use Scenario: Securing UART-based NMEA 0183 communication lines between GPS module and host MCU in ruggedized handheld units. IC Role / Device Role: Bidirectional protection applied to TX/RX pair, leveraging AOZ8204KI's symmetric clamping for ±10.25V at 25A. Use Value: Clamping symmetry ensures equal protection during polarity-reversal surges; –40°C to +85°C rating supports outdoor thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode array applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ5.0A | DO-214AC package (4.5 × 2.7 mm); 5.0V VRWM; 14.4V VBR; 100pF Cj; unidirectional only | Larger footprint; higher capacitance limits use to DC/low-speed lines only; no bidirectional option | Select when cost sensitivity outweighs board space constraints and high-speed performance is not required |
| TPD2E001DRYR | SC-70-6 package (2.2 × 1.35 mm); 5.5V VRWM; 12V VBR; 12pF Cj; dual-channel bidirectional | Smaller width but longer length; lower capacitance; fixed dual-bidir topology only - no four-unidir mode | Choose for ultra-low-capacitance needs on 1Gbps+ interfaces where four-line flexibility is unnecessary |
Compared with SMAJ5.0A and TPD2E001DRYR, AOZ8204KI uniquely balances compact SC-89 size, configurable four-unidir/two-bidir topology, and 17pF capacitance - making it optimal for space-limited portable designs requiring multi-interface protection without sacrificing signal fidelity.
Availability
AOZ8204KI is available at Aetrix Electronics and suitable for portable GPS units, digital cameras, and notebook computer I/O interfaces requiring stable component supply across extended production cycles.
Supply support for AOZ8204KI 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 AOZ8204KI belongs to AOS's TVS Diode Array product line, engineered specifically for ESD-hardened portable electronics where board space, signal integrity, and multi-line protection flexibility are primary design constraints.
FAQ
What is the maximum clamping voltage of AOZ8204KI under a 25A transient?
The AOZ8204KI exhibits a maximum clamping voltage of 7.50 V for positive transients and –10.25 V for negative transients when subjected to a 25A, 100ns pulse per I/O pin to ground. These values are measured per the electrical characteristics table on page 2 of the official datasheet and define the upper voltage limit imposed on protected lines during worst-case surge events.
Can AOZ8204KI protect both unidirectional and bidirectional data lines?
Yes, AOZ8204KI supports two distinct configurations: four unidirectional lines (Pins 1/3/4/6 connected to I/O, Pin 2 grounded) or two bidirectional lines (Pins 1/3 as inputs, Pins 4/6 grounded). This dual-mode capability is explicitly documented in the "Typical Application" and "Applications Information" sections of the AOZ8204KI datasheet.
What is the junction capacitance of AOZ8204KI and how does it affect high-speed interfaces?
The AOZ8204KI has a typical junction capacitance of 17 pF at 0V reverse bias and 1 MHz. This low value ensures minimal signal attenuation and reflection on high-speed interfaces such as USB 2.0 (480 Mbps) and HDMI DDC lines, preserving eye diagram integrity and meeting insertion loss targets below –3 dB up to 1 GHz.
Is AOZ8204KI RoHS compliant and what is its operating temperature range?
Yes, AOZ8204KI is RoHS compliant and packaged in an SC-89 lead-free format. Its specified ambient operating temperature range is –40°C to +85°C, with junction temperature rated up to +125°C - validated across the full range per Absolute Maximum Ratings and Electrical Characteristics tables in the AOZ8204KI datasheet.
How should the NC pin (Pin 5) of AOZ8204KI be handled in PCB layout?
Pin 5 of AOZ8204KI is a no-connect terminal per the internal circuit diagram. It may be left floating, but best practice recommends tying it to ground to minimize parasitic antenna effects and improve ESD return path consistency - a recommendation supported by AOS's "Circuit Board Layout Recommendations" on page 4 of the AOZ8204KI datasheet.
AOZ8204KI 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:
- Zener
- Unidirectional Channels:
- 4
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 7.5V
- Current - Peak Pulse (10/1000µs):
- 5A (8/20µs)
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 15pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-89-6
AOZ8204KI FAQ
1.How can I place an order for AOZ8204KI through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8204KI 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 AOZ8204KI reliable?
The price and inventory of AOZ8204KI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8204KI is usually 5 days.
3.What payment methods are accepted for AOZ8204KI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8204KI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8204KI?
AOZ8204KI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8204KI 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 AOZ8204KI?
For technical support, including AOZ8204KI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8204KI requirements.
6.How does Aetrix verify that AOZ8204KI is sourced from the original manufacturer or authorized distributors?
All AOZ8204KI 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 AOZ8204KI meets industry standards.
7.What is the process for return or replacement of AOZ8204KI?
All AOZ8204KI units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8204KI, 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 AOZ8204KI part is unused and in its original packaging.
Return procedure for AOZ8204KI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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