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Alpha & Omega Semiconductor Inc. AOZ8S315BLS-05
- Part No.:
- AOZ8S315BLS-05
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 0201 (0603 Metric)
- Datasheet:
-
AOZ8S315BLS-05.pdf
- Description:
- 1CH 5V 0.2PF BIDIRECTIONAL TVS
- Quantity:
- Payment:
- Shipping:
Inventory:9,736
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Product details
Overview
AOZ8S315BLS-05 from Alpha & Omega Semiconductor is a single-channel bidirectional TVS diode designed to protect high-speed data lines-including USB4, Thunderbolt 4, and PCIe-from ESD (±22 kV contact, ±24 kV air), lightning surges (9 A, 8/20 µs), and EFT (80 A). It operates at 5 V VRWM, delivers 0.2 pF capacitance, and clamps to 6 V at 9 A surge current. Its primary role is signal-line transient suppression in space-constrained mobile and notebook interfaces.
For engineers reviewing the AOZ8S315BLS-05 datasheet, pinout, applications, or equivalent options, key selection criteria include ultra-low capacitance for 20 Gbps signal integrity, bidirectional clamping symmetry, WLCSP 0.6×0.3 mm package compatibility with fine-pitch routing, and IEC 61000-4-2/4-5 compliance without degrading eye diagrams.
Technical Context
The AOZ8S315BLS-05 implements a symmetric silicon avalanche structure enabling true bidirectional clamping across both polarities, critical for AC-coupled high-speed differential pairs. Its dynamic resistance of 0.25 Ω (1–16 A TLP) ensures rapid voltage stabilization during sub-100 ns transients.
Designed for direct placement on I/O traces, it maintains signal fidelity via 0.2 pF junction capacitance at 0 V and insertion loss < –1.5 dB up to 10 GHz-validated in USB3.2 Gen2 (10 Gbps), HDMI2.1 (12 Gbps), and Thunderbolt 3.0 (20 Gbps) eye diagrams.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 5 V - Maximum continuous reverse working voltage before leakage exceeds 1 nA; matches 5 V logic and interface rails. |
| VBR (min) | 6 V - Minimum breakdown voltage at 100 µA; ensures reliable triggering above normal operating swing. |
| VCL @ 9 A | 6 V - Clamping voltage under IEC 61000-4-5 8/20 µs surge; protects downstream 5 V receivers from overvoltage. |
| CJ | 0.2 pF - Junction capacitance at 0 V, 1 MHz; enables minimal signal distortion on 20 Gbps differential lanes. |
| ESD Contact | ±22 kV - IEC 61000-4-2 contact discharge rating; meets industrial and consumer ESD immunity requirements. |
| Package | WLCSP 0.6×0.3 mm, 2-terminal - Ultra-compact chip-scale package compatible with 0201 footprint; no solder mask defined pads required. |
Pinout & Package
AOZ8S315BLS-05 uses a 2-terminal WLCSP (Wafer-Level Chip-Scale Package) with no internal die attach or wire bonds-both terminals are electrically symmetrical and function as bidirectional I/O nodes. The package has no polarity marking; orientation is determined by PCB pad layout per datasheet mechanical drawing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Bidirectional Anode/Cathode | AC-coupled signal line node; conducts equally in both directions during overvoltage events. |
| Terminal 2 | Bidirectional Anode/Cathode | Paired terminal forming symmetrical TVS junction; no ground reference required-placed directly across differential pair or single-ended line. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping symmetry | Identical VBR, VCL, and dynamic resistance for positive and negative transients-preserves common-mode noise rejection in differential signaling. |
| 0.2 pF junction capacitance | Minimizes signal attenuation and jitter on 10–20 Gbps serial links; validated in Thunderbolt 3.0 and USB4 eye diagrams. |
| 6 V clamping at 9 A (8/20 µs) | Keeps protected IC I/O within safe SOA during lightning-surge events without latch-up or damage. |
| ±24 kV air / ±22 kV contact ESD | Exceeds IEC 61000-4-2 Level 4 for system-level ESD robustness in handheld and docking applications. |
Applications
| USB4 Interface Protection | Thunderbolt 4 Channel Protection |
|---|---|
Use Scenario: Placed on TX/RX differential pairs of USB4 host ports to suppress ESD and crosstalk-induced transients during hot-plug events. IC Role / Device Role / Timing Role: Bidirectional TVS diode providing sub-nanosecond clamping without adding series impedance or skew. Use Value: Maintains 40 Gbps aggregate bandwidth with < –1.5 dB insertion loss up to 10 GHz and preserves eye opening per USB4 spec. | Use Scenario: Integrated into Thunderbolt 4 controller reference designs to meet stringent IEC 61000-4-2/4-5 compliance for certified docks and peripherals. IC Role / Device Role / Timing Role: Signal-line protector placed adjacent to connector pins to shunt fast transients before reaching PHY input stages. Use Value: Enables full 40 Gbps operation with verified eye diagram integrity and ±22 kV contact ESD survivability. |
| PCIe Gen4/Gen5 Add-in Card ESD Guarding | Mobile Phone High-Speed MIPI D-PHY Protection |
Use Scenario: Mounted on PCIe x4 edge connectors of GPU or NVMe add-in cards to suppress board-level ESD and coupling noise from adjacent power planes. IC Role / Device Role / Timing Role: Low-capacitance transient suppressor bridging each differential lane to chassis ground or local reference. Use Value: Prevents bit errors and link training failures at 16 GT/s (Gen4) and 32 GT/s (Gen5) while occupying < 0.2 mm² PCB area. | Use Scenario: Deployed on MIPI D-PHY clock and data lanes in smartphone camera modules to survive repeated finger-touch ESD in compact form factors. IC Role / Device Role / Timing Role: Space-optimized bidirectional clamp protecting 2.5 Gbps D-PHY signals against human-body-model discharges. Use Value: Delivers ±8 kV HBM and ±22 kV IEC contact protection without degrading signal rise/fall times or causing timing skew. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J5.0A | Unidirectional, DO-214AC package (3.5 mm × 1.6 mm), 5.0 V VRWM, 100 pF capacitance | Not suitable for high-speed differential lines due to high capacitance and unidirectional response | Select only for low-frequency DC power rail protection where size and speed are not constraints. |
| TPD4E05U06DQAR | Quad-channel, 0.65 mm × 1.0 mm DQA package, 5.5 V VRWM, 0.5 pF per channel | Higher capacitance and larger footprint reduce suitability for single-lane 20 Gbps applications | Prefer when multi-line protection (e.g., USB-C CC/SBU + high-speed lanes) is needed in one device. |
Compared with SMA6J5.0A and TPD4E05U06DQAR, the AOZ8S315BLS-05 uniquely combines 0.2 pF capacitance, 2-terminal WLCSP packaging, and bidirectional 5 V clamping-making it the only option qualified for single-lane 20 Gbps differential interfaces with strict PCB area limits.
Availability
AOZ8S315BLS-05 is available at Aetrix Electronics and suitable for USB4 interface design, Thunderbolt 4 peripheral development, and PCIe Gen5 add-in card production requiring stable component supply and RoHS-compliant green packaging.
Supply support for AOZ8S315BLS-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 and signal protection solutions.
The AOZ8S315BLS product line targets ultra-high-speed data interface protection, with AOZ8S315BLS-05 specifically engineered for 5 V systems requiring minimal capacitance, bidirectional response, and WLCSP integration in mobile and computing platforms.
FAQ
What is the maximum clamping voltage of AOZ8S315BLS-05 under IEC 61000-4-5 surge conditions?
The AOZ8S315BLS-05 clamps to 6 V at 9 A peak pulse current (8/20 µs waveform), as specified in its Absolute Maximum Ratings table. This value is measured per IEC 61000-4-5 test conditions and ensures protected circuitry remains within safe operating voltage limits during lightning-induced surges. The AOZ8S315BLS-05 achieves this with a dynamic resistance of 0.25 Ω, enabling rapid voltage stabilization.
Is AOZ8S315BLS-05 compatible with 3.3 V systems?
No-AOZ8S315BLS-05 is rated for 5 V VRWM and is intended for 5 V nominal interfaces such as USB4, Thunderbolt 4, and PCIe Gen4/Gen5. For 3.3 V systems, the pin-compatible AOZ8S315BLS-03 variant (3.3 V VRWM) should be used instead. Both share identical package, capacitance, and ESD ratings, but their breakdown and clamping thresholds differ per operating voltage.
Does AOZ8S315BLS-05 require a ground connection?
No-AOZ8S315BLS-05 is a two-terminal bidirectional TVS diode with no dedicated ground pin. It connects directly across the signal line and return path (e.g., differential pair or single-ended line to reference plane), relying on symmetrical avalanche conduction in both directions. Its WLCSP package integrates no internal ground bond; PCB layout defines the reference.
How does AOZ8S315BLS-05 maintain signal integrity at 20 Gbps?
AOZ8S315BLS-05 maintains signal integrity at 20 Gbps through 0.2 pF junction capacitance, < –1.5 dB insertion loss up to 10 GHz, and symmetric bidirectional clamping that avoids introducing common-mode imbalance. These characteristics were verified using Thunderbolt 3.0 eye diagrams in the official datasheet, confirming no measurable degradation in eye height or width at full data rate.
What is the operating temperature range of AOZ8S315BLS-05?
The AOZ8S315BLS-05 is rated for continuous operation from –40°C to +125°C ambient temperature, matching automotive and industrial extended temperature requirements. This range is validated across all electrical parameters including leakage current (< 50 nA at VRWM), clamping voltage stability, and ESD performance-ensuring reliability in mobile, notebook, and embedded computing environments where thermal cycling occurs.
AOZ8S315BLS-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:
- 6V (Typ)
- Current - Peak Pulse (10/1000µs):
- 9A (8/20µs)
- Power - Peak Pulse:
- 70W
- Power Line Protection:
- No
- Applications:
- HDMI, USB
- Capacitance @ Frequency:
- 0.2pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-WLCSP (0.6x0.3)
AOZ8S315BLS-05 FAQ
1.How can I place an order for AOZ8S315BLS-05 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8S315BLS-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 AOZ8S315BLS-05 reliable?
The price and inventory of AOZ8S315BLS-05 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8S315BLS-05 is usually 5 days.
3.What payment methods are accepted for AOZ8S315BLS-05?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8S315BLS-05 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8S315BLS-05?
AOZ8S315BLS-05 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8S315BLS-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 AOZ8S315BLS-05?
For technical support, including AOZ8S315BLS-05 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8S315BLS-05 requirements.
6.How does Aetrix verify that AOZ8S315BLS-05 is sourced from the original manufacturer or authorized distributors?
All AOZ8S315BLS-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 AOZ8S315BLS-05 meets industry standards.
7.What is the process for return or replacement of AOZ8S315BLS-05?
All AOZ8S315BLS-05 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8S315BLS-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 AOZ8S315BLS-05 part is unused and in its original packaging.
Return procedure for AOZ8S315BLS-05:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AOZ8S315BLS-05 Tags
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