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Alpha & Omega Semiconductor Inc. AOZ8S315BLS-03
- Part No.:
- AOZ8S315BLS-03
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 0201 (0603 Metric)
- Datasheet:
-
AOZ8S315BLS-03.pdf
- Description:
- 1CH 3.3V 0.2PF BIDIRECTIONAL TVS
- Quantity:
- Payment:
- Shipping:
Inventory:9,899
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Product details
Overview
AOZ8S315BLS-03 from Alpha & Omega Semiconductor is a single-channel bidirectional TVS diode designed to protect high-speed data lines-including USB4, Thunderbolt 4, and PCIe-against ESD (±22 kV contact, ±24 kV air), lightning surges (9 A, 8/20 µs), and EFT (80 A). It features 0.2 pF junction capacitance, 3.3 V reverse working voltage, and ultra-low clamping voltage (2.5 V at 1 A TLP).
For engineers reviewing the AOZ8S315BLS-03 datasheet, pinout, applications, or equivalent options, key selection criteria include sub-0.3 pF capacitance for 20 Gbps signal integrity, WLCSP 0.6×0.3 mm two-terminal layout, bidirectional clamping symmetry, and -40°C to +125°C operating range in space-constrained portable electronics.
Technical Context
The AOZ8S315BLS-03 implements a silicon avalanche diode structure optimized for low-capacitance transient suppression on differential high-speed I/O. Its bidirectional architecture provides symmetrical clamping for both polarities without polarity marking, enabling placement on any signal pair without orientation constraints.
It operates with 3.3 V VRWM and achieves 2.5 V clamping at 1 A TLP (100 ns), dropping to ≤6 V at 9 A IEC 61000-4-5 surge current. Dynamic resistance is specified at 0.25 Ω (1–16 A TLP), ensuring minimal voltage overshoot during fast transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 3.3 V - Maximum continuous reverse voltage before leakage exceeds 1 nA; matches 3.3 V I/O rail systems. |
| VBR (min) | 6 V - Breakdown initiates ≥6 V at 100 µA; ensures no conduction during normal 3.3 V signaling. |
| VCL @ 1 A TLP | 2.5 V - Clamped voltage seen by protected IC during 100 ns transient; preserves signal eye margin. |
| CJ | 0.2 pF - Junction capacitance at 0 V, 1 MHz; enables <0.3 dB insertion loss up to 10 GHz. |
| IPP (8/20 µs) | 9 A - Peak surge current survivability per IEC 61000-4-5; supports industrial lightning immunity. |
| ESD Contact | ±22 kV - Withstands direct human touch discharge per IEC 61000-4-2; qualifies for handheld device front-end protection. |
| Operating Temp | -40°C to +125°C - Full specification over automotive-grade ambient range; suitable for mobile SoC proximity mounting. |
Pinout & Package
AOZ8S315BLS-03 uses a WLCSP (Wafer-Level Chip-Scale Package) with 0.6 mm × 0.3 mm footprint and two solderable terminals. No internal die attach pad or ground plane; terminals are electrically symmetric and non-polarized.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode/Cathode (bidirectional) | Either terminal serves as anode or cathode depending on transient polarity; no orientation required during placement. |
| 2 | Anode/Cathode (bidirectional) | Electrically identical to Pin 1; forms a symmetric two-terminal TVS across protected line pair. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential high-speed lines (e.g., USB4 TX/RX) without polarity assignment. |
| 0.2 pF junction capacitance | Minimizes signal distortion and insertion loss on 10–20 Gbps interfaces; validated via HDMI 2.1 and Thunderbolt 3.0 eye diagrams. |
| 2.5 V clamping at 1 A TLP | Prevents voltage overshoot beyond receiver input absolute maximum ratings during nanosecond-scale ESD events. |
| WLCSP 0.6×0.3 mm package | Reduces PCB area by >50% vs. 0402 SMT TVS; eliminates routing stubs and parasitic inductance in RF-sensitive layouts. |
| ±24 kV air / ±22 kV contact ESD | Exceeds IEC 61000-4-2 Level 4 requirements; certified for consumer and industrial end-equipment compliance testing. |
Applications
| USB4 / Thunderbolt 4 Interface Protection | PCI Express Gen 4/5 Lane Protection |
|---|---|
Use Scenario: Protecting differential TX/RX pairs in laptop docking stations and external SSD enclosures exposed to frequent hot-plug ESD. IC Role / Device Role / Timing Role: Bidirectional TVS placed directly at connector ingress, shunting transients before reaching SerDes PHY. Use Value: 0.2 pF capacitance preserves 20 Gbps eye opening; ±22 kV contact rating ensures robustness across 10,000+ insertions. | Use Scenario: Safeguarding PCIe 4.0/5.0 lanes in AI accelerator cards where signal integrity margins are <100 mV. IC Role / Device Role / Timing Role: Low-capacitance clamp mounted adjacent to edge connector, minimizing stub length to preserve 16 GT/s NRZ waveform fidelity. Use Value: 2.5 V clamping at 1 A TLP prevents PHY latch-up; WLCSP footprint avoids trace discontinuities in dense BGA fanout zones. |
| Mobile Phone High-Speed MIPI D-PHY Protection | Notebook DisplayPort / eDP Link Protection |
Use Scenario: Shielding camera sensor interface traces routed along narrow bezel frames prone to user-hand ESD coupling. IC Role / Device Role / Timing Role: Two-terminal TVS placed inline on MIPI clock and data lanes between AP and image sensor die. Use Value: 0.6×0.3 mm size fits within 0.2 mm trace spacing; -40°C to +125°C rating supports operation under display backlight thermal stress. | Use Scenario: Securing eDP 4-lane main link between GPU and OLED panel in ultrabooks with thin clamshell hinges. IC Role / Device Role / Timing Role: Symmetric clamping device installed at panel-side flex connector to suppress hinge-motion-induced transients. Use Value: Bidirectional response handles both positive/negative coupling from mechanical flex; 9 A surge rating covers system-level lightning test requirements. |
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 33 V power rail protection-not signal-line ESD suppression | Select only for DC power line clamping; unsuitable for >1 Gbps data lines due to excessive capacitance. |
| TPD4E05U06DQAR | Quad-channel, 0.5 pF per channel, 3.6 V VRWM, 6-pin X2SON | Offers multi-line integration but higher per-channel capacitance and larger footprint than AOZ8S315BLS-03 | Prefer when protecting four independent lines simultaneously; choose AOZ8S315BLS-03 for single-line optimization in ultra-dense layouts. |
Compared with SMA6J33A-Q and TPD4E05U06DQAR, AOZ8S315BLS-03 delivers the lowest capacitance (0.2 pF) and smallest footprint (0.6×0.3 mm) for single-line 3.3 V high-speed protection-making it optimal for next-gen USB4/PCIe interconnects where signal integrity and board space are co-constrained.
Availability
AOZ8S315BLS-03 is available at Aetrix Electronics and suitable for USB4 interface design, Thunderbolt 4 docking solutions, and PCIe Gen 5 add-in cards requiring stable component supply with guaranteed long-term manufacturability.
Supply support for AOZ8S315BLS-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 & Omega Semiconductor (AOS) is a fabless power semiconductor company specializing in MOSFETs, TVS diodes, and power ICs for high-efficiency, high-density power and protection systems.
The AOZ8S315BLS product line targets ultra-high-speed data interface protection, with AOZ8S315BLS-03 specifically engineered for 3.3 V I/O rails in space-constrained mobile and computing platforms.
FAQ
What is the exact package type and dimensions of AOZ8S315BLS-03?
AOZ8S315BLS-03 uses a WLCSP (Wafer-Level Chip-Scale Package) measuring 0.6 mm × 0.3 mm with two solderable terminals. It has no leads or mold compound-only silicon die with tin-silver bump terminations. The package is RoHS-compliant and halogen-free, matching JEDEC J-STD-020 moisture sensitivity level 1.
Does AOZ8S315BLS-03 support bidirectional ESD protection on a single data line?
Yes, AOZ8S315BLS-03 is inherently bidirectional: its symmetrical avalanche structure clamps transients of either polarity equally across its two terminals. This allows direct placement on AC-coupled or differential signal lines-such as USB4 TX+/TX−-without polarity concerns, unlike unidirectional TVS devices that require ground-referenced configuration.
What is the clamping voltage of AOZ8S315BLS-03 under IEC 61000-4-5 surge conditions?
Under IEC 61000-4-5 (8/20 µs waveform), AOZ8S315BLS-03 clamps to 6 V at 9 A peak pulse current. At lower surge levels (1 A), clamping is 2.5 V. These values are measured per standard test setup and ensure protected ICs remain within safe input voltage limits during lightning-induced surges.
Can AOZ8S315BLS-03 be used on 5 V logic lines?
No-AOZ8S315BLS-03 is rated for 3.3 V VRWM and 6 V minimum breakdown. For 5 V systems, AOS offers AOZ8S315BLS-05 (5 V VRWM variant); using AOZ8S315BLS-03 on 5 V lines risks premature conduction and increased leakage, degrading signal integrity and power efficiency.
How does the 0.2 pF capacitance of AOZ8S315BLS-03 impact 20 Gbps signal integrity?
The 0.2 pF junction capacitance of AOZ8S315BLS-03 contributes negligible loading on 20 Gbps differential channels: insertion loss remains below −0.5 dB up to 10 GHz, preserving eye height and jitter margin. This is validated in manufacturer-provided Thunderbolt 3.0 (20 Gbps) eye diagrams, confirming compatibility with next-generation serial interfaces.
AOZ8S315BLS-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:
- 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-03 FAQ
1.How can I place an order for AOZ8S315BLS-03 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8S315BLS-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 AOZ8S315BLS-03 reliable?
The price and inventory of AOZ8S315BLS-03 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8S315BLS-03 is usually 5 days.
3.What payment methods are accepted for AOZ8S315BLS-03?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8S315BLS-03 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8S315BLS-03?
AOZ8S315BLS-03 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8S315BLS-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 AOZ8S315BLS-03?
For technical support, including AOZ8S315BLS-03 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8S315BLS-03 requirements.
6.How does Aetrix verify that AOZ8S315BLS-03 is sourced from the original manufacturer or authorized distributors?
All AOZ8S315BLS-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 AOZ8S315BLS-03 meets industry standards.
7.What is the process for return or replacement of AOZ8S315BLS-03?
All AOZ8S315BLS-03 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8S315BLS-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 AOZ8S315BLS-03 part is unused and in its original packaging.
Return procedure for AOZ8S315BLS-03:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AOZ8S315BLS-03 Tags
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