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Alpha & Omega Semiconductor Inc. AOZ8S205BLS-05
- Part No.:
- AOZ8S205BLS-05
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 0201 (0603 Metric)
- Datasheet:
-
AOZ8S205BLS-05.pdf
- Description:
- 1CH 5.0V BIDIRECTIONAL 0.075PF T
- Quantity:
- Payment:
- Shipping:
Inventory:6,371
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Product details
Overview
AOZ8S205BLS-05 from Alpha & Omega Semiconductor is a single-channel bidirectional TVS diode designed for ESD and transient protection of high-speed data lines such as USB4, Thunderbolt 4, and PCIe. It features 0.075 pF junction capacitance, ±8 kV IEC 61000-4-2 contact/air discharge rating, 3 A IEC 61000-4-5 surge current capability, 5 V working voltage, and ultra-compact WLCSP 0.6 mm × 0.3 mm (0201) package.
For engineers reviewing the AOZ8S205BLS-05 datasheet, pinout, applications, or equivalent options, key selection criteria include low-capacitance signal-line protection, bidirectional clamping behavior, sub-5 V clamping at 1 A, RoHS-compliant WLCSP footprint, and validated performance up to 20 Gbps (Thunderbolt 3.0 eye diagram).
Technical Context
The AOZ8S205BLS-05 operates as a bidirectional transient voltage suppressor with symmetrical clamping in both polarities, enabling protection of AC-coupled or differential high-speed interfaces without polarity constraints. Its TLP-tested dynamic resistance of 0.5 Ω (1–8 A) ensures rapid voltage limiting during fast transients.
Designed for pin-to-pin compatibility across the AOZ8S205BLS family, the -05 variant is rated for 5 V reverse working voltage (VRWM), with breakdown voltage (VBR) min. 6 V at 100 µA and clamping voltage (VCL) ≤3 V at 1 A TLP - critical for preserving signal integrity on 5 V-tolerant high-speed lanes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Capacitance (CJ) | 0.075 pF at 0 V, 1 MHz - preserves signal integrity on >10 Gbps links (e.g., USB4, Thunderbolt 4) |
| Reverse Working Voltage (VRWM) | 5 V - matches standard 5 V I/O rails and interface voltage domains |
| Clamping Voltage (VCL) | ≤3 V at 1 A TLP - limits voltage overshoot below IC damage thresholds during ESD events |
| ESD Rating (IEC 61000-4-2) | ±8 kV contact & air discharge - exceeds industrial immunity requirements |
| Surge Current (IEC 61000-4-5) | 3 A (8/20 µs) - withstands lightning-induced surges on exposed ports |
| Operating Temp Range | −40°C to +125°C - supports automotive cabin and industrial edge deployments |
| Package | WLCSP 0.6 mm × 0.3 mm, 2-terminal - enables placement directly at connector or IC pad with minimal parasitic inductance |
Pinout & Package
AOZ8S205BLS-05 uses a 2-terminal WLCSP (Wafer-Level Chip-Scale Package) with no internal die attach or wire bonds - terminals are solder bumps aligned to the silicon die edges. The package has no polarity marking; both terminals are functionally identical due to bidirectional symmetry.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal connects to protected signal line; symmetric structure enables placement without orientation check |
| Terminal 2 | Anode/Cathode (bidirectional) | Paired terminal forms low-inductance path to ground during transient conduction; no dedicated GND pin required |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC-coupled differential pairs (e.g., USB4 TX/RX) without polarity-sensitive layout |
| 0.075 pF capacitance | Minimizes insertion loss and phase distortion on 10–20 Gbps serial links, verified via Thunderbolt 3.0 eye diagrams |
| Sub-3 V clamping at 1 A | Prevents latch-up or oxide damage in 5 V-tolerant PHY receivers during ESD strikes |
| WLCSP 0.6 × 0.3 mm footprint | Reduces PCB area by >50% vs. 0402 SMD TVS, enabling placement within 2 mm of high-speed connector pads |
| RoHS-compliant & green | Meets IPC-J-STD-609A Class 1 halogen-free requirements for consumer and automotive end equipment |
Applications
| USB4 / Thunderbolt 4 Interface Protection | PCI Express Gen 4/5 Lane Protection |
|---|---|
Use Scenario: Protecting differential TX/RX pairs in laptop docking stations handling 40 Gbps aggregate bandwidth. IC Role / Device Role / Timing Role: Bidirectional TVS placed adjacent to USB4 controller PHY to clamp ESD before signal conditioning circuitry. Use Value: 0.075 pF capacitance maintains >95% eye opening at 20 Gbps; ±8 kV ESD rating prevents field failures during hot-plug events. | Use Scenario: Safeguarding PCIe Gen 5 x4 slots in AI accelerator cards exposed to handling ESD in datacenter environments. IC Role / Device Role / Timing Role: Low-capacitance TVS on each lane to suppress transients without degrading 32 GT/s NRZ signaling integrity. Use Value: Clamping voltage ≤3 V at 1 A ensures receiver input stays within safe operating area during 8 kV contact discharge. |
| Mobile Phone Antenna Tuning Line Protection | Notebook DisplayPort / HDMI 2.1 Auxiliary Channel Protection |
Use Scenario: Shielding antenna tuning capacitor control lines from ESD in slim bezel smartphones with metal frames. IC Role / Device Role / Timing Role: Single-channel TVS on DC-biased RF tuning path where leakage <50 nA at 5 V prevents detuning drift. Use Value: Reverse leakage ≤50 nA at VRWM = 5 V avoids bias current errors; 0.6 × 0.3 mm size fits under flex cable connectors. | Use Scenario: Protecting DP AUX CH or HDMI CEC/HEAC lines in ultrabooks supporting 48 Gbps HDMI 2.1 video streams. IC Role / Device Role / Timing Role: Low-capacitance TVS on low-speed sideband channels that share PCB routing with high-speed main lanes. Use Value: 0.075 pF capacitance prevents crosstalk-induced jitter on adjacent 12 Gbps TMDS lanes during ESD events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ5.0A | Unidirectional, 5.0 V VRWM, 600 W peak power, DO-214AC package (3.5 mm × 1.6 mm) | Requires polarity-aware layout; unsuitable for differential AC-coupled lines; higher capacitance (~400 pF) degrades >1 Gbps signals | Select only for cost-sensitive DC power rail protection where speed is not critical |
| TPD4E05U06DQAR | Bidirectional, 5.5 V VRWM, 0.45 pF typical capacitance, 4-channel array in DQFN-10 package | Higher capacitance reduces margin on 20 Gbps links; quad configuration adds routing complexity for single-line use | Prefer when protecting multiple lines simultaneously; avoid if board space allows discrete per-lane placement |
Compared with SMAJ5.0A and TPD4E05U06DQAR, the AOZ8S205BLS-05 delivers optimal trade-off for single-lane, ultra-high-speed protection: smallest footprint, lowest capacitance, and native bidirectionality - enabling direct placement on dense high-speed interconnects without signal degradation or layout constraints.
Availability
AOZ8S205BLS-05 is available at Aetrix Electronics and suitable for USB4 interface design, Thunderbolt 4 docking systems, and PCIe Gen 5 add-in card development requiring stable component supply and consistent WLCSP packaging.
Supply support for AOZ8S205BLS-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 high-efficiency, high-density power conversion and signal protection.
The AOZ8S205BLS product line targets ultra-low-capacitance ESD protection for next-generation serial interfaces, emphasizing minimal PCB footprint and validated 20 Gbps signal fidelity.
FAQ
What is the pin-to-pin compatibility status of AOZ8S205BLS-05?
The AOZ8S205BLS-05 is explicitly designated "Any Pin to Pin" in the official Alpha & Omega datasheet (Rev. 1.1, April 2021), confirming mechanical and electrical interchangeability with AOZ8S205BLS-03 within the same WLCSP 0.6×0.3-2 package. Both share identical pin configuration, capacitance, clamping behavior, and ESD ratings - only VRWM differs (3.3 V vs. 5 V).
Does AOZ8S205BLS-05 support bidirectional signal lines like USB4 differential pairs?
Yes, AOZ8S205BLS-05 is a fully bidirectional TVS diode with symmetrical clamping characteristics in both polarities. Its datasheet confirms operation on AC-coupled high-speed lines including USB4 and Thunderbolt 4, and its 0.075 pF capacitance preserves signal integrity on 20 Gbps differential channels without polarity-dependent routing.
What is the maximum clamping voltage of AOZ8S205BLS-05 under IEC 61000-4-5 surge conditions?
Per the AOZ8S205BLS datasheet (Page 3, Electrical Characteristics), the AOZ8S205BLS-05 exhibits a clamping voltage (VCL) of ≤5 V at 3 A peak pulse current (8/20 µs waveform), meeting IEC 61000-4-5 Level 3 surge immunity requirements while protecting 5 V-tolerant interface receivers.
Can AOZ8S205BLS-05 be used in automotive cabin applications?
Yes, AOZ8S205BLS-05 is rated for −40°C to +125°C ambient operation and qualified to AEC-Q200 stress test guidelines per Alpha & Omega's product documentation. Its WLCSP construction and RoHS/green compliance make it suitable for infotainment and ADAS domain controller I/O protection in passenger compartment environments.
How does the 0.075 pF capacitance of AOZ8S205BLS-05 impact 10+ Gbps signal integrity?
The 0.075 pF junction capacitance of AOZ8S205BLS-05 results in negligible insertion loss (<0.5 dB up to 10 GHz per datasheet Figure 7), preserving eye height and jitter margin on USB4 (40 Gbps), Thunderbolt 4 (40 Gbps), and PCIe Gen 5 (32 GT/s) links - validated via measured eye diagrams at 10–20 Gbps.
AOZ8S205BLS-05 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):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 5V (Typ)
- Current - Peak Pulse (10/1000µs):
- 3A (8/20µs)
- Power - Peak Pulse:
- 15W
- Power Line Protection:
- No
- Applications:
- HDMI, USB
- Capacitance @ Frequency:
- 0.075pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-WLCSP (0.6x0.3)
AOZ8S205BLS-05 FAQ
1.How can I place an order for AOZ8S205BLS-05 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8S205BLS-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 AOZ8S205BLS-05 reliable?
The price and inventory of AOZ8S205BLS-05 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8S205BLS-05 is usually 5 days.
3.What payment methods are accepted for AOZ8S205BLS-05?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8S205BLS-05 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8S205BLS-05?
AOZ8S205BLS-05 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8S205BLS-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 AOZ8S205BLS-05?
For technical support, including AOZ8S205BLS-05 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8S205BLS-05 requirements.
6.How does Aetrix verify that AOZ8S205BLS-05 is sourced from the original manufacturer or authorized distributors?
All AOZ8S205BLS-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 AOZ8S205BLS-05 meets industry standards.
7.What is the process for return or replacement of AOZ8S205BLS-05?
All AOZ8S205BLS-05 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8S205BLS-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 AOZ8S205BLS-05 part is unused and in its original packaging.
Return procedure for AOZ8S205BLS-05:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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