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Alpha & Omega Semiconductor Inc. AOZ8S204BL2-03
- Part No.:
- AOZ8S204BL2-03
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 0201 (0603 Metric)
- Datasheet:
-
AOZ8S204BL2-03.pdf
- Description:
- 2CH 3.3V BIDIRECTIONAL 0.15PF TV
- Quantity:
- Payment:
- Shipping:
Inventory:3,092
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Product details
Overview
AOZ8S204BL2-03 from Alpha and Omega Semiconductor is a dual-channel bidirectional TVS diode designed for ESD and transient protection of high-speed differential data lines including USB4, Thunderbolt 4, and PCIe. It features 0.15 pF typical junction capacitance, ±20 kV IEC 61000-4-2 contact/air ESD rating, 3.3 V reverse working voltage, 5.8 V clamping voltage at 8.5 A surge, and operates from –40°C to +125°C in a WLCSP 0.63 mm × 0.33 mm package.
For engineers reviewing the AOZ8S204BL2-03 datasheet, pinout, applications, or equivalent options, key selection criteria include ultra-low capacitance for signal integrity preservation, bidirectional snapback behavior for symmetric line protection, low clamping voltage under 8/20 µs surge, RoHS-compliant WLCSP footprint, and verified performance in 20 Gbps Thunderbolt 3.0 eye diagrams.
Technical Context
The AOZ8S204BL2-03 implements a silicon avalanche-based bidirectional snapback TVS structure with two independent channels sharing a common ground terminal. Its low dynamic resistance (0.2 Ω) ensures rapid voltage clamping during 8/20 µs transients up to 8.5 A, while maintaining sub-0.2 pF capacitance across 0–5 V bias to minimize signal distortion on >10 Gbps interfaces.
It is characterized using TLP testing (100 ns pulse) and validated per IEC 61000-4-2 (±20 kV), IEC 61000-4-5 (8.5 A), and IEC 61000-4-4 (40 A), with holding voltage of 1.6 V confirming stable snapback operation below system supply rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Capacitance | 0.15 pF typical at 1 MHz, 0 V - preserves signal integrity on 10–20 Gbps serial links |
| Reverse Working Voltage | 3.3 V - compatible with standard USB/PCIe I/O voltage domains |
| Clamping Voltage | 5.8 V at 8.5 A (8/20 µs) - limits transient overvoltage below IC damage thresholds |
| ESD Rating | ±20 kV contact & air (IEC 61000-4-2) - exceeds industrial immunity requirements |
| Operating Temp | –40°C to +125°C ambient - supports automotive cabin and industrial edge deployments |
| Package | WLCSP 0.63 mm × 0.33 mm - enables placement directly at Type-C connector or redriver input |
| Peak Pulse Power | 50 W (8/20 µs) - handles lightning-induced surges in compact form factor |
Pinout & Package
AOZ8S204BL2-03 uses a 3-terminal WLCSP (Wafer-Level Chip-Scale Package) with 0.63 mm × 0.33 mm footprint and 0.3 mm pitch. Pin 2 is common ground; Pins 1 and 3 serve as bidirectional I/O terminals for independent channel protection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | I/O Channel 1 | Bidirectional transient path for first high-speed differential pair (e.g., TX+/RX+) |
| Pin 2 | Ground | Common cathode reference for both TVS channels; must be low-inductance connection to system ground plane |
| Pin 3 | I/O Channel 2 | Bidirectional transient path for second high-speed differential pair (e.g., TX−/RX−) |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional snapback TVS | Enables symmetric protection of differential pairs without polarity constraints or external biasing |
| 0.15 pF junction capacitance | Minimizes insertion loss and jitter degradation on 10–20 Gbps interfaces like Thunderbolt 4 and USB4 |
| 5.8 V clamping at 8.5 A | Keeps protected ICs within safe operating voltage during IEC 61000-4-5 surge events |
| WLCSP 0.63 × 0.33 mm | Allows placement within 1 mm of high-speed connector pads, reducing stub inductance and loop area |
| ±20 kV ESD immunity | Meets and exceeds IEC 61000-4-2 Level 4 for end-equipment compliance without additional shielding |
Applications
| USB4 / Thunderbolt 4 Interface Protection | PCI Express Gen 4/5 Lane Protection |
|---|---|
Use Scenario: Protecting differential lanes of a USB4/Thunderbolt 4 port against ESD and cable discharge events in ultraportable laptops and docking stations. IC Role / Device Role / Timing Role: Dual-channel bidirectional TVS placed adjacent to Type-C receptacle to clamp transients before reaching controller or redriver IC. Use Value: 0.15 pF capacitance prevents eye diagram closure at 40 Gbps aggregate bandwidth; ±20 kV ESD rating ensures pass/fail compliance in system-level testing. | Use Scenario: Safeguarding PCIe Gen 4/5 x4 links in AI accelerator cards and server backplanes exposed to handling and hot-plug surges. IC Role / Device Role / Timing Role: Per-lane transient suppressor on each TX/RX pair, referenced to common ground to maintain common-mode noise rejection. Use Value: 5.8 V clamping voltage stays below PCIe receiver absolute maximum ratings; WLCSP footprint avoids routing congestion near high-density BGA packages. |
| Mobile Phone High-Speed Interface Protection | Notebook Internal DisplayLink / eDP Protection |
Use Scenario: ESD hardening of MIPI D-PHY or USB 3.2 Gen 2 interfaces in smartphone mainboards where board space is constrained. IC Role / Device Role / Timing Role: Dual-channel TVS integrated into camera module flex or USB-C subsystem to protect image sensor or USB controller I/O pins. Use Value: 0.63 mm × 0.33 mm WLCSP fits within 0.5 mm margin of fine-pitch FPC connectors; –40°C to +125°C rating supports extended battery thermal profiles. | Use Scenario: Transient suppression on internal eDP or DisplayPort Alt Mode lanes between GPU and display panel in thin-and-light notebooks. IC Role / Device Role / Timing Role: Low-capacitance TVS placed at source-side of high-speed display interface to prevent latch-up in timing controller or panel driver. Use Value: Sub-0.2 pF capacitance avoids skew between differential pairs; bidirectional operation accommodates AC-coupled signaling without DC bias dependency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J33A-Q | Unidirectional, 33 V VRWM, 5.0 pF capacitance, DO-214AC package | Designed for power rail protection, not high-speed data lines | Select only for lower-frequency, non-differential applications where capacitance >4 pF is acceptable |
| TPD2E001DRYR | Bidirectional, 0.17 pF capacitance, 3.3 V VRWM, 6-pin WSON package | Single-channel per package; requires two devices for dual-line protection | Use when layout allows separate placement per line and higher package height is tolerable |
Compared with SMA6J33A-Q and TPD2E001DRYR, the AOZ8S204BL2-03 uniquely delivers dual-channel bidirectional protection in a single 0.63 mm × 0.33 mm WLCSP with 0.15 pF capacitance-enabling direct integration at ultra-high-speed interface entry points where space and signal fidelity are simultaneously constrained.
Availability
AOZ8S204BL2-03 is available at Aetrix Electronics and suitable for USB4, Thunderbolt 4, and PCIe Gen 4/5 interface designs requiring stable component supply, high-volume production readiness, and long-term lifecycle assurance.
Supply support for AOZ8S204BL2-03 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 high-efficiency, high-reliability applications.
The AOZ8S204BL2 product line is engineered specifically for ultra-low-capacitance ESD protection of next-generation high-speed serial interfaces, targeting design-in at the physical layer of USB, Thunderbolt, and PCIe systems.
FAQ
What is the clamping voltage of AOZ8S204BL2-03 under IEC 61000-4-5 surge conditions?
The AOZ8S204BL2-03 has a clamping voltage of 5.8 V at 8.5 A peak pulse current (8/20 µs waveform), measured per IEC 61000-4-5. This value ensures protected downstream ICs remain within their absolute maximum voltage ratings during lightning-surge events. The low dynamic resistance of 0.2 Ω contributes to consistent clamping performance across the specified current range.
Is AOZ8S204BL2-03 suitable for protecting USB4 differential pairs?
Yes, AOZ8S204BL2-03 is explicitly validated for USB4 protection, with documented performance in 40 Gbps eye diagrams and 0.15 pF capacitance that minimizes signal distortion. Its bidirectional architecture matches the AC-coupled nature of USB4 lanes, and its 3.3 V VRWM aligns with USB4 I/O voltage specifications. Placement within 1 mm of the Type-C connector is recommended.
Does AOZ8S204BL2-03 require an external bias or control signal?
No, AOZ8S204BL2-03 is a passive, self-triggering bidirectional TVS diode with no external bias or control required. It operates solely based on voltage threshold detection across its I/O terminals relative to the common ground (Pin 2). The snapback behavior initiates automatically when transient voltage exceeds the breakdown threshold, making it ideal for plug-and-play interface protection.
What is the thermal operating range of AOZ8S204BL2-03?
The AOZ8S204BL2-03 is rated for continuous operation from –40°C to +125°C ambient temperature, matching the junction temperature range. This specification is validated across all electrical parameters including clamping voltage, leakage current, and ESD robustness, supporting deployment in automotive infotainment, industrial edge computing, and mobile platforms with aggressive thermal profiles.
How does the WLCSP package of AOZ8S204BL2-03 impact PCB layout?
The WLCSP 0.63 mm × 0.33 mm package of AOZ8S204BL2-03 enables direct placement adjacent to high-speed connectors with minimal trace length, reducing parasitic inductance and improving high-frequency transient response. Its 0.3 mm pitch requires standard microvia and fine-line PCB processes but eliminates the need for solder mask defined pads or complex stencil designs typical of larger packages.
AOZ8S204BL2-03 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package/Case:
- 0201 (0603 Metric)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 3.3V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 5.8V (Typ)
- Current - Peak Pulse (10/1000µs):
- 8.5A (8/20µs)
- Power - Peak Pulse:
- 50W
- Power Line Protection:
- No
- Applications:
- HDMI, USB
- Capacitance @ Frequency:
- 0.15pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 3-WLCSP (0.63x0.33)
AOZ8S204BL2-03 FAQ
1.How can I place an order for AOZ8S204BL2-03 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8S204BL2-03 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 AOZ8S204BL2-03 reliable?
The price and inventory of AOZ8S204BL2-03 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8S204BL2-03 is usually 5 days.
3.What payment methods are accepted for AOZ8S204BL2-03?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8S204BL2-03 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8S204BL2-03?
AOZ8S204BL2-03 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8S204BL2-03 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 AOZ8S204BL2-03?
For technical support, including AOZ8S204BL2-03 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8S204BL2-03 requirements.
6.How does Aetrix verify that AOZ8S204BL2-03 is sourced from the original manufacturer or authorized distributors?
All AOZ8S204BL2-03 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 AOZ8S204BL2-03 meets industry standards.
7.What is the process for return or replacement of AOZ8S204BL2-03?
All AOZ8S204BL2-03 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8S204BL2-03, 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 AOZ8S204BL2-03 part is unused and in its original packaging.
Return procedure for AOZ8S204BL2-03:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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