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Alpha & Omega Semiconductor Inc. AOZ8S204BLS-05
- Part No.:
- AOZ8S204BLS-05
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 0201 (0603 Metric)
- Datasheet:
-
AOZ8S204BLS-05.pdf
- Description:
- TVS DIODE 5VWM 5.8VC 2-WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:9,885
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Product details
Overview
AOZ8S204BLS-05 from Alpha & Omega Semiconductor is a single-channel bidirectional TVS diode designed for ESD and transient protection of high-speed data lines including USB4, Thunderbolt 4, and PCIe. It features 0.15 pF junction capacitance, ±20 kV IEC 61000-4-2 contact/air discharge rating, 5.8 V clamping voltage at 8.5 A (8/20 µs), 3.3 V/5 V operating voltage support, and WLCSP 0.6 mm × 0.3 mm package.
For engineers reviewing the AOZ8S204BLS-05 datasheet, pinout, applications, or equivalent options, key selection criteria include ultra-low capacitance for signal integrity preservation, bidirectional clamping for AC-coupled interfaces, IEC 61000-4-5 surge robustness, RoHS-compliant WLCSP footprint, and validated performance up to 20 Gbps (Thunderbolt 3.0).
Technical Context
The AOZ8S204BLS-05 operates as a bidirectional transient voltage suppressor with symmetrical clamping behavior across both polarities, enabling protection of differential high-speed serial links without polarity constraints. Its TLP-tested dynamic resistance of 0.2 Ω (1–16 A) ensures rapid voltage limiting during fast transients.
Designed for direct placement on I/O traces, it maintains signal fidelity via sub-0.2 pF capacitance at 0 V bias and exhibits flat insertion loss (< –2 dB up to 10 GHz), making it suitable for Gen2/Gen3 USB, HDMI 2.1, and Thunderbolt 3.0 channels where impedance matching and eye diagram integrity are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Capacitance (CJ) | 0.15 pF at 0 V, 1 MHz - preserves signal integrity on >10 Gbps differential lines |
| Clamping Voltage (VCL) | 5.8 V at 8.5 A (8/20 µs) - limits surge energy to safe levels for 3.3 V/5 V receivers |
| ESD Rating (IEC 61000-4-2) | ±20 kV contact & air discharge - meets industrial and consumer ESD immunity requirements |
| Reverse Working Voltage (VRWM) | 5 V - supports 5 V logic and interface rails without leakage or conduction |
| Peak Pulse Current (IPP) | 8.5 A (8/20 µs) - withstands lightning-induced surges per IEC 61000-4-5 Level 3 |
| Dynamic Resistance (RDYN) | 0.2 Ω (1–16 A TLP) - enables fast, low-voltage clamping response under fast-rising transients |
| Operating Temp Range | –40°C to +125°C - qualified for automotive cabin and industrial edge computing environments |
Pinout & Package
AOZ8S204BLS-05 is housed in a RoHS-compliant WLCSP (Wafer-Level Chip Scale Package) measuring 0.6 mm × 0.3 mm with 2 terminals, optimized for minimal PCB area and high-density routing near high-speed connectors.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode/Cathode (Bidirectional) | Interchangeable terminal for symmetric ESD clamping on differential or single-ended I/O lines |
| 2 | Anode/Cathode (Bidirectional) | Paired terminal completing the bidirectional TVS path; no polarity assignment required in layout |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping architecture | Enables protection of AC-coupled differential pairs (e.g., USB4 TX/RX) without orientation constraints |
| 0.15 pF junction capacitance | Minimizes signal distortion and insertion loss on 10–20 Gbps serial links (validated to Thunderbolt 3.0) |
| 5.8 V clamping at 8.5 A surge | Protects 5 V interface ICs by limiting transient overshoot below absolute maximum input ratings |
| ±20 kV IEC 61000-4-2 ESD rating | Meets end-equipment compliance for handheld and docking-station ESD stress events |
| WLCSP 0.6 mm × 0.3 mm footprint | Reduces board space by >50% vs. 0402 SMT TVS, enabling placement directly at connector pads |
Applications
| USB4 / Thunderbolt 4 Interface Protection | PCI Express Gen4/Gen5 Lane Protection |
|---|---|
Use Scenario: Protecting differential TX/RX lanes in laptop Type-C ports handling 40 Gbps aggregate bandwidth. IC Role / Device Role / Timing Role: Bidirectional TVS placed adjacent to connector to clamp ESD and crosstalk-induced transients before reaching SerDes PHY. Use Value: 0.15 pF capacitance avoids eye closure; ±20 kV ESD rating ensures pass/fail compliance in system-level IEC testing. | Use Scenario: Safeguarding PCIe 4.0/5.0 x4 lanes in embedded AI accelerators and NVMe SSD modules. IC Role / Device Role / Timing Role: Low-capacitance transient suppressor on each differential pair to prevent latch-up or damage during hot-plug or board-level ESD events. Use Value: 5.8 V clamping at 8.5 A prevents receiver overvoltage while maintaining < –2 dB insertion loss up to 16 GHz. |
| HDMI 2.1 Source Port Protection | Mobile SoC High-Speed I/O Protection |
Use Scenario: Securing TMDS clock and data channels in 8K display output circuits of set-top boxes and gaming consoles. IC Role / Device Role / Timing Role: Symmetric TVS on each 3.3 V TMDS line to absorb contact ESD and cable-discharge transients without degrading rise/fall times. Use Value: Sub-0.2 pF capacitance preserves 12 Gbps signal integrity; bidirectional operation eliminates polarity routing errors. | Use Scenario: Shielding MIPI D-PHY and C-PHY lanes in smartphone application processors from board-level ESD during assembly and field use. IC Role / Device Role / Timing Role: Ultra-compact TVS integrated into fan-out wafer-level packaging (FOWLP) proximity to baseband/RF SoC I/O pads. Use Value: 0.6 mm × 0.3 mm WLCSP fits within tight pitch constraints; ±20 kV rating exceeds IEC 61000-4-2 Level 4 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ5.0A | Unidirectional, 5.0 V VRWM, 100 pF capacitance, DO-214AC package | Not suitable for high-speed differential lines due to excessive capacitance and unidirectional behavior | Select only for low-frequency DC power rail protection where speed and symmetry are not required |
| TPD4E05U06DQAR | Bidirectional, 0.5 pF typical capacitance, 5 V VRWM, 6-pin SON package | Higher capacitance limits usable bandwidth to ≤5 Gbps; quad-channel configuration adds routing complexity for single-lane use | Prefer when protecting multiple lanes simultaneously and 0.5 pF is acceptable for USB3.2 Gen1 |
Compared with SMAJ5.0A and TPD4E05U06DQAR, the AOZ8S204BLS-05 delivers superior high-speed performance via its 0.15 pF capacitance and true bidirectional 2-terminal symmetry-enabling direct integration on 10–20 Gbps differential pairs without signal degradation or layout polarity risk.
Availability
AOZ8S204BLS-05 is available at Aetrix Electronics and suitable for USB4, Thunderbolt 4, and PCIe Gen5 applications requiring stable component supply, consistent WLCSP sourcing, and long-term lifecycle assurance for high-volume consumer and industrial designs.
Supply support for AOZ8S204BLS-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 AOZ8S204BLS series was developed specifically to address ESD and surge protection challenges in next-generation high-speed serial interfaces, emphasizing ultra-low capacitance, bidirectional symmetry, and miniature WLCSP packaging.
FAQ
What is the clamping voltage of AOZ8S204BLS-05 at 8.5 A surge current?
The AOZ8S204BLS-05 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 protection of 5 V interface receivers by limiting transient overshoot below their absolute maximum input voltage rating. The low dynamic resistance (0.2 Ω) contributes to this stable clamping behavior across the specified surge range.
Is AOZ8S204BLS-05 compatible with USB4 and Thunderbolt 4 physical layer requirements?
Yes, AOZ8S204BLS-05 is explicitly validated for USB4 and Thunderbolt 4 applications, with published eye diagram performance up to 20 Gbps (Thunderbolt 3.0) and insertion loss < –2 dB at 10 GHz. Its 0.15 pF capacitance and bidirectional symmetry meet the stringent signal integrity and ESD immunity requirements of these protocols' Type-C connector interfaces.
Does AOZ8S204BLS-05 require orientation-specific placement on PCB?
No, AOZ8S204BLS-05 is a fully bidirectional TVS diode with symmetrical electrical characteristics between pins 1 and 2. There is no anode/cathode designation; either terminal may connect to signal or ground-side traces. This eliminates orientation errors during automated placement and simplifies layout for differential pairs.
What is the junction capacitance specification for AOZ8S204BLS-05 and how is it measured?
The AOZ8S204BLS-05 has a typical junction capacitance of 0.15 pF, measured at 0 V reverse bias and 1 MHz frequency. This value is guaranteed within a max of 0.19 pF per datasheet Electrical Characteristics table. The low capacitance is achieved through optimized silicon geometry and WLCSP construction, enabling minimal loading on high-speed data lines.
What environmental and reliability qualifications does AOZ8S204BLS-05 meet?
AOZ8S204BLS-05 is RoHS-compliant, halogen-free, and qualified for operation from –40°C to +125°C ambient temperature. It meets IEC 61000-4-2 (±20 kV contact/air), IEC 61000-4-5 (8.5 A, 8/20 µs), and IEC 61000-4-4 (40 A EFT) standards. Its WLCSP package is qualified per J-STD-020 moisture sensitivity level 1.
AOZ8S204BLS-05 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package/Case:
- 0201 (0603 Metric)
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5V (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:
- USB
- Capacitance @ Frequency:
- 0.15pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-WLCSP (0.6x0.3)
AOZ8S204BLS-05 FAQ
1.How can I place an order for AOZ8S204BLS-05 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8S204BLS-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 AOZ8S204BLS-05 reliable?
The price and inventory of AOZ8S204BLS-05 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8S204BLS-05 is usually 5 days.
3.What payment methods are accepted for AOZ8S204BLS-05?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8S204BLS-05 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8S204BLS-05?
AOZ8S204BLS-05 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8S204BLS-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 AOZ8S204BLS-05?
For technical support, including AOZ8S204BLS-05 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8S204BLS-05 requirements.
6.How does Aetrix verify that AOZ8S204BLS-05 is sourced from the original manufacturer or authorized distributors?
All AOZ8S204BLS-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 AOZ8S204BLS-05 meets industry standards.
7.What is the process for return or replacement of AOZ8S204BLS-05?
All AOZ8S204BLS-05 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8S204BLS-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 AOZ8S204BLS-05 part is unused and in its original packaging.
Return procedure for AOZ8S204BLS-05:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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