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Alpha & Omega Semiconductor Inc. AOZ8660BLS-01
- Part No.:
- AOZ8660BLS-01
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 0201 (0603 Metric)
- Datasheet:
-
AOZ8660BLS-01.pdf
- Description:
- 1CH 1.0V BIDIRECTIONAL 0.15PF TV
- Quantity:
- Payment:
- Shipping:
Inventory:9,464
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Product details
Overview
AOZ8660BLS-01 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 (±15 kV contact/air), lightning surge (5 A, 8/20 µs), and EFT (40 A). It features ultra-low 0.15 pF capacitance, 1 V operating voltage, and clamps at 4 V (1 A TLP) for signal integrity preservation in space-constrained mobile and notebook applications.
For engineers reviewing the AOZ8660BLS-01 datasheet, pinout, applications, or equivalent options, key selection criteria include bidirectional ESD robustness, sub-1-pF junction capacitance, low clamping voltage under transient stress, RoHS-compliant WLCSP-2 package footprint, and compatibility with high-frequency serial interfaces requiring minimal signal distortion.
Technical Context
The AOZ8660BLS-01 implements a symmetric silicon avalanche structure enabling bidirectional transient suppression without polarity dependency. Its design targets high-speed I/O protection where capacitance must remain below 0.2 pF to avoid signal degradation on >10 Gbps links.
It operates across −40°C to +125°C ambient, supports peak pulse power of 35 W (8/20 µs), and achieves dynamic resistance of 0.25 Ω between 1–16 A TLP current, ensuring rapid voltage clamping response during fast-rising ESD events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Capacitance | 0.15 pF at 0 V, 1 MHz - preserves signal integrity on USB4/PCIe Gen4+ differential pairs |
| Reverse Working Voltage | 1 V - enables use on low-voltage I/O rails including 1.0 V and 1.2 V logic |
| Clamping Voltage | 4 V at 1 A TLP - limits transient overvoltage to safe levels for sensitive transceivers |
| ESD Rating | ±15 kV contact/air per IEC 61000-4-2 - exceeds industrial immunity requirements |
| Surge Rating | 5 A, 8/20 µs per IEC 61000-4-5 - withstands lightning-induced surges on exposed ports |
| Operating Temp Range | −40°C to +125°C - suitable for automotive infotainment and industrial edge computing environments |
Pinout & Package
AOZ8660BLS-01 is housed in a RoHS-compliant WLCSP (Wafer-Level Chip-Scale Package) measuring 0.6 mm × 0.3 mm - the smallest standard footprint for discrete TVS devices, optimized for antenna and high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode/Cathode (Bidirectional) | Either terminal serves as input/output; no polarity assignment required for ESD protection path |
| Pin 2 | Anode/Cathode (Bidirectional) | Completes symmetrical clamping path; pins are interchangeable in layout |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional ESD protection | Enables single-device protection of AC-coupled differential lines without orientation constraints |
| 0.15 pF junction capacitance | Minimizes insertion loss and return loss on 20+ Gbps serial links |
| 1 V working voltage | Supports direct integration on 1.0 V I/O domains common in modern SoCs and PHYs |
| 4 V clamping at 1 A TLP | Keeps protected IC's I/O voltage within safe operating range during fast ESD transients |
| WLCSP-2 0.6×0.3 mm package | Reduces board area by >70% vs. SOD-323 or SC-70 alternatives while maintaining thermal performance |
Applications
| USB4 / Thunderbolt 4 Interface | Mobile Phone Antenna Line |
|---|---|
Use Scenario: Protecting differential TX/RX lanes in USB4/Thunderbolt 4 controllers against ESD during hot-plug and handling. IC Role / Device Role / Timing Role: Bidirectional TVS suppressor placed directly at connector entry point to shunt transients before reaching SerDes PHY. Use Value: 0.15 pF capacitance avoids signal eye closure; ±15 kV ESD rating ensures compliance with IEC 61000-4-2 Level 4. | Use Scenario: Shielding LTE/5G antenna feedlines from electrostatic discharge induced by user contact or environmental coupling. IC Role / Device Role / Timing Role: Low-capacitance TVS placed in series with RF front-end matching network to preserve VSWR and gain flatness. Use Value: Sub-1-pF loading prevents detuning of narrowband antenna structures; 1 V VRWM matches typical RF switch bias rails. |
| PCI Express Gen4/Gen5 Edge Connector | Notebook Internal High-Speed Link |
Use Scenario: Guarding PCIe Gen4/Gen5 x4 edge connectors on docking stations and expansion cards against system-level ESD events. IC Role / Device Role / Timing Role: Pin-to-pin transient suppressor installed adjacent to connector to minimize inductance in clamping path. Use Value: 4 V clamping at 1 A TLP ensures downstream retimer or switch remains within absolute maximum ratings during ESD strike. | Use Scenario: Protecting internal MIPI D-PHY or eDP lanes between AP and display panel in thin-bezel notebooks. IC Role / Device Role / Timing Role: Ultra-compact TVS integrated into flex cable assembly or motherboard near display interface IC. Use Value: 0.6×0.3 mm WLCSP allows placement within 1 mm of connector; −40°C to +125°C rating supports extended thermal cycling in fanless designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ1.0A | Unidirectional, 1.0 V VRWM, 12 pF capacitance, DO-214AC package (4.5×2.7 mm) | Requires polarity-aware layout; unsuitable for differential high-speed lines due to high capacitance | Select only for low-frequency DC power rail protection where size and capacitance are non-critical |
| TPD4E05U06DQAR | Bidirectional, 1.0 V VRWM, 0.5 pF capacitance, X2SON-6 package (1.0×1.0 mm) | Larger footprint; higher capacitance increases insertion loss on >10 Gbps links | Use when multi-line protection (4-channel) justifies larger area and moderate capacitance trade-off |
Compared with SMAJ1.0A and TPD4E05U06DQAR, the AOZ8660BLS-01 uniquely delivers bidirectional protection in a 0.6×0.3 mm footprint with 0.15 pF capacitance-enabling first-choice placement on next-gen USB4/PCIe Gen5 differential pairs where both space and signal fidelity are constrained.
Availability
AOZ8660BLS-01 is available at Aetrix Electronics and suitable for USB4 interface protection, mobile antenna line safeguarding, and notebook high-speed link hardening requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for AOZ8660BLS-01 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 power management and signal protection.
The AOZ8660BLS-01 belongs to AOS's ultra-low-capacitance TVS portfolio, engineered specifically for ESD-hardened high-speed serial interfaces in mobile, computing, and connectivity applications.
FAQ
What is the primary circuit role of the AOZ8660BLS-01 in a USB4 design?
The AOZ8660BLS-01 functions as a bidirectional transient voltage suppressor placed at the USB4 connector to clamp ESD and surge events before they reach the controller PHY. Its 0.15 pF capacitance ensures minimal impact on differential signal integrity, while ±15 kV IEC 61000-4-2 rating guarantees robust system-level ESD immunity. The AOZ8660BLS-01 is specified for direct integration on 1.0 V I/O rails commonly used in USB4 transceivers.
Does the AOZ8660BLS-01 require orientation-specific placement on PCB?
No-the AOZ8660BLS-01 is a symmetric bidirectional TVS diode with interchangeable pins, eliminating orientation constraints during layout. Both terminals serve identical roles in clamping positive and negative transients, making it ideal for differential signal lines like USB4 and PCIe where polarity alignment adds complexity. This symmetry simplifies routing and reduces assembly errors compared to unidirectional alternatives.
What is the clamping voltage of the AOZ8660BLS-01 under real-world ESD conditions?
The AOZ8660BLS-01 clamps to 4 V at 1 A using Transmission Line Pulse (TLP) testing-a standardized method correlating closely with IEC 61000-4-2 ESD events. At 5 A (IEC 61000-4-5 lightning surge), clamping rises to 7 V. These values are measured pin-to-pin and validated across −40°C to +125°C, ensuring consistent protection behavior in automotive and industrial thermal environments.
Can the AOZ8660BLS-01 be used on 1.0 V logic rails?
Yes-the AOZ8660BLS-01 has a reverse working voltage (VRWM) of 1.0 V and reverse breakdown voltage (VBR) starting at 1.5 V (min), making it fully compatible with 1.0 V I/O domains found in modern USB4, Thunderbolt 4, and PCIe Gen5 controllers. Its low 1 V operating threshold ensures reliable leakage control (<50 nA) while providing headroom for transient suppression without false triggering during normal operation.
What package type does the AOZ8660BLS-01 use, and why is it significant?
The AOZ8660BLS-01 uses a WLCSP-2 (Wafer-Level Chip-Scale Package) measuring 0.6 mm × 0.3 mm-among the smallest standardized footprints for discrete TVS diodes. This ultra-compact size enables placement directly at high-speed connector pads, minimizing parasitic inductance in the ESD current path. Its 0201-equivalent footprint supports miniaturization in smartphones, ultrabooks, and compact docking solutions where PCB real estate is critically constrained.
AOZ8660BLS-01 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package/Case:
- 0201 (0603 Metric)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 1V (Max)
- Voltage - Breakdown (Min):
- 1.5V
- Voltage - Clamping (Max) @ Ipp:
- 7V (Typ)
- Current - Peak Pulse (10/1000µs):
- 5A (8/20µs)
- Power - Peak Pulse:
- 35W
- Power Line Protection:
- No
- Applications:
- USB
- Capacitance @ Frequency:
- 0.15pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-WLCSP (0.6x0.3)
AOZ8660BLS-01 FAQ
1.How can I place an order for AOZ8660BLS-01 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8660BLS-01 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 AOZ8660BLS-01 reliable?
The price and inventory of AOZ8660BLS-01 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8660BLS-01 is usually 5 days.
3.What payment methods are accepted for AOZ8660BLS-01?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8660BLS-01 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8660BLS-01?
AOZ8660BLS-01 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8660BLS-01 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 AOZ8660BLS-01?
For technical support, including AOZ8660BLS-01 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8660BLS-01 requirements.
6.How does Aetrix verify that AOZ8660BLS-01 is sourced from the original manufacturer or authorized distributors?
All AOZ8660BLS-01 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 AOZ8660BLS-01 meets industry standards.
7.What is the process for return or replacement of AOZ8660BLS-01?
All AOZ8660BLS-01 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8660BLS-01, 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 AOZ8660BLS-01 part is unused and in its original packaging.
Return procedure for AOZ8660BLS-01:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AOZ8660BLS-01 Tags
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