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Alpha & Omega Semiconductor Inc. AOZ8S303BLS-05
- Part No.:
- AOZ8S303BLS-05
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 0201 (0603 Metric)
- Datasheet:
-
AOZ8S303BLS-05.pdf
- Description:
- TVS DIODE 5VWM 6.5VC 2-WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:9,893
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Product details
Overview
AOZ8S303BLS-05 from Alpha and Omega Semiconductor is a single-channel bidirectional TVS diode designed to protect high-speed data lines-including USB3.2 Gen2 (10 Gbps), Thunderbolt 3.0 (20 Gbps), and PCI Express (16 Gbps)-against ESD (±20 kV contact/air), lightning surge (9 A, 8/20 µs), and EFT (80 A). It features 0.2 pF junction capacitance, 5 V operating voltage, and 6.5 V clamping voltage at 9 A.
For engineers reviewing the AOZ8S303BLS-05 datasheet, pinout, applications, or equivalent options, key selection criteria include ultra-low capacitance for signal integrity, bidirectional transient suppression, RoHS-compliant WLCSP 0.6×0.3 mm package, and validated eye diagram performance across 10–20 Gbps interfaces.
Technical Context
The AOZ8S303BLS-05 implements a symmetric bidirectional avalanche structure enabling protection on both polarities of high-speed differential pairs without polarity constraints. Its TLP-characterized dynamic resistance of 0.25 Ω supports fast response to sub-nanosecond transients while maintaining low clamping under IEC 61000-4-5 surge conditions.
Designed for direct integration into RF-sensitive signal paths, it achieves 0.2 pF capacitance at 0 V bias and maintains insertion loss < –0.5 dB up to 10 GHz-verified via S21 measurements-ensuring minimal degradation of 10+ Gbps eye diagrams in USB3.2, Thunderbolt, and PCIe applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Rating (IEC 61000-4-2) | ±20 kV contact & air discharge: ensures robust handling during assembly and end-user operation |
| Junction Capacitance (CJ) | 0.20–0.25 pF @ 1 MHz, 0 V: preserves signal integrity on 10–20 Gbps differential links |
| Clamping Voltage (VCL) | 6.5 V @ 9 A (8/20 µs): limits voltage excursion below IC I/O absolute max ratings during surge events |
| Reverse Working Voltage (VRWM) | 5 V: matches standard 5 V I/O rail systems without derating or level-shifting |
| Package | WLCSP 0.6 mm × 0.3 mm, 2-terminal: enables placement directly at connector or SoC I/O pads with minimal trace stub |
| Operating Temp Range | –40°C to +125°C ambient: supports automotive cabin and industrial edge computing environments |
Pinout & Package
AOZ8S303BLS-05 uses a 2-pin Wafer-Level Chip-Scale Package (WLCSP) with 0.6 mm × 0.3 mm footprint and face-down solder bumps. The package is optimized for high-frequency signal routing with minimal parasitic inductance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode/Cathode (Bidirectional) | Shared terminal for symmetrical transient conduction; no polarity assignment required |
| 2 | Anode/Cathode (Bidirectional) | Paired terminal completing bidirectional path; interchangeable with Pin 1 in layout |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional ESD protection | Enables single-device protection of differential pairs (e.g., USB3.2 TX+/TX–) without polarity awareness |
| 0.2 pF typical capacitance | Minimizes signal distortion and jitter on 10–20 Gbps serial links, preserving eye opening |
| 6.5 V clamping at 9 A surge | Keeps protected IC I/O voltage within safe margin below 7 V absolute maximum ratings |
| WLCSP 0.6×0.3 mm package | Reduces PCB area by >50% vs. 0402 SMT TVS; eliminates pad-to-pad crosstalk in dense routing |
Applications
| USB3.2 Gen2 Interface Protection | Thunderbolt 3.0 Channel Protection |
|---|---|
Use Scenario: Protecting SuperSpeed USB differential pairs (TX/RX) in portable docking stations against ESD during hot-plug events. IC Role / Device Role: Bidirectional TVS placed immediately adjacent to USB Type-C connector pins. Use Value: 0.2 pF capacitance prevents eye diagram closure; ±20 kV ESD rating meets IEC 61000-4-2 system-level compliance. | Use Scenario: Safeguarding Thunderbolt 3.0 dual-lane differential signals in ultrabooks during cable insertion/removal. IC Role / Device Role: Low-capacitance TVS on each lane (TX+/TX–, RX+/RX–) before retimer IC input. Use Value: 6.5 V clamping at 9 A ensures downstream PHY remains within 7 V abs-max; validated 20 Gbps eye integrity. |
| PCIe Gen4/Gen5 Edge Connector Protection | Mobile Phone High-Speed MIPI D-PHY Protection |
Use Scenario: Transient suppression on PCIe x4 edge connectors in embedded AI accelerators exposed to field ESD. IC Role / Device Role: Per-lane TVS mounted at board edge, between connector and host controller. Use Value: WLCSP 0.6×0.3 mm allows placement within 1 mm of connector pad; 0.25 Ω dynamic resistance enables sub-ns response. | Use Scenario: ESD hardening of MIPI D-PHY camera/display interfaces in smartphone mainboards. IC Role / Device Role: Bidirectional TVS on each differential pair (CLK+/CLK–, DATA+/DATA–) near image sensor. Use Value: 5 V VRWM aligns with MIPI I/O voltage; ±8 kV HBM rating exceeds JEDEC JESD22-A114 requirement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J5.0A-Q | DO-214AC package (4.5×3.2 mm); 5.0 V VRWM; 100 pF capacitance; 12.5 V clamping @ 5.5 A | Not suitable for >1 Gbps interfaces due to high capacitance; intended for power-rail or low-speed signal protection | Select only for cost-sensitive, non-high-speed applications where PCB space is not constrained. |
| TPD4E001DPYR | 4-channel array in X2SON-8 (1.0×1.0 mm); 0.5 pF per channel; 5.5 V VRWM; 12 V clamping @ 4 A | Higher capacitance degrades 10+ Gbps eye diagrams; quad configuration adds routing complexity for single-line use | Prefer when protecting multiple lines simultaneously; avoid for single-line 20 Gbps designs requiring <0.3 pF. |
Compared with SMA6J5.0A-Q and TPD4E001DPYR, the AOZ8S303BLS-05 uniquely delivers sub-0.25 pF capacitance in a 0.6×0.3 mm WLCSP-enabling direct placement on 10–20 Gbps differential traces without signal integrity compromise-while maintaining ±20 kV ESD immunity and 6.5 V clamping at full 9 A surge current.
Availability
AOZ8S303BLS-05 is available at Aetrix Electronics and suitable for USB3.2 Gen2 interface protection, Thunderbolt 3.0 channel hardening, and PCIe Gen4/Gen5 edge connector safeguarding requiring stable component supply across high-volume consumer electronics production.
Supply support for AOZ8S303BLS-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 and Omega Semiconductor (AOS) is a fabless power semiconductor company specializing in MOSFETs, TVS diodes, and power ICs for efficiency-critical applications.
The AOZ8S series targets high-speed data line protection, with AOZ8S303BLS-05 engineered specifically for 10–20 Gbps serial interfaces requiring ultra-low capacitance, bidirectional symmetry, and industry-leading ESD robustness in minimal footprint.
FAQ
What is the maximum clamping voltage of the AOZ8S303BLS-05 under IEC 61000-4-5 surge conditions?
The AOZ8S303BLS-05 exhibits a clamping voltage of 6.5 V when subjected to a 9 A peak pulse current (8/20 µs waveform), as specified in its Absolute Maximum Ratings table. This value is measured pin-to-pin and ensures protected downstream ICs remain within their 7 V absolute maximum I/O voltage rating during lightning-surge events.
Does the AOZ8S303BLS-05 require orientation-specific placement on the PCB?
No, the AOZ8S303BLS-05 is a fully bidirectional TVS diode with symmetrical electrical characteristics. Its two terminals are functionally identical, allowing unrestricted placement orientation on differential signal pairs such as USB3.2 TX+/TX– or Thunderbolt 3.0 lanes without polarity concerns.
Can the AOZ8S303BLS-05 be used to protect 5 V logic I/Os in microcontrollers?
Yes, the AOZ8S303BLS-05 has a 5 V reverse working voltage (VRWM) and 6.5 V clamping voltage at 9 A, making it compatible with standard 5 V digital I/O rails. Its low leakage (<50 nA at VRWM) avoids loading effects, and ±20 kV ESD rating exceeds IEC 61000-4-2 system-level requirements for microcontroller GPIO protection.
How does the 0.2 pF capacitance of the AOZ8S303BLS-05 impact 20 Gbps signal integrity?
The AOZ8S303BLS-05's 0.2 pF junction capacitance introduces negligible impedance mismatch on 20 Gbps differential channels, as confirmed by measured S21 insertion loss < –0.5 dB up to 10 GHz and validated Thunderbolt 3.0 eye diagrams. This enables placement directly at connector pads without equalization or pre-emphasis compensation.
Is the AOZ8S303BLS-05 compliant with automotive temperature requirements?
Yes, the AOZ8S303BLS-05 is rated for operation from –40°C to +125°C ambient temperature and qualified per AEC-Q200 stress test requirements for passive components. Its WLCSP package and silicon design support under-hood and infotainment module deployment in automotive applications.
AOZ8S303BLS-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:
- 6.5V (Typ)
- Current - Peak Pulse (10/1000µs):
- 9A (8/20µs)
- Power - Peak Pulse:
- 70W
- Power Line Protection:
- No
- Applications:
- USB
- Capacitance @ Frequency:
- 0.2pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-WLCSP (0.6x0.3)
AOZ8S303BLS-05 FAQ
1.How can I place an order for AOZ8S303BLS-05 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8S303BLS-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 AOZ8S303BLS-05 reliable?
The price and inventory of AOZ8S303BLS-05 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8S303BLS-05 is usually 5 days.
3.What payment methods are accepted for AOZ8S303BLS-05?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8S303BLS-05 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8S303BLS-05?
AOZ8S303BLS-05 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8S303BLS-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 AOZ8S303BLS-05?
For technical support, including AOZ8S303BLS-05 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8S303BLS-05 requirements.
6.How does Aetrix verify that AOZ8S303BLS-05 is sourced from the original manufacturer or authorized distributors?
All AOZ8S303BLS-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 AOZ8S303BLS-05 meets industry standards.
7.What is the process for return or replacement of AOZ8S303BLS-05?
All AOZ8S303BLS-05 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8S303BLS-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 AOZ8S303BLS-05 part is unused and in its original packaging.
Return procedure for AOZ8S303BLS-05:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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