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Alpha & Omega Semiconductor Inc. AOZ8662BLT-05
- Part No.:
- AOZ8662BLT-05
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 01005 (0402 Metric)
- Datasheet:
-
AOZ8662BLT-05.pdf
- Description:
- TVS DIODE 5VWM 7VC 2-WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:3,917
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Product details
Overview
AOZ8662BLT-05 from Alpha & Omega Semiconductor is a single-channel bidirectional TVS diode designed for ESD and transient protection of high-speed data lines operating at 5 V nominal voltage. It delivers ±30 kV IEC 61000-4-2 contact/air discharge immunity, 9 A IEC 61000-4-5 surge current handling, and ultra-low 1.2 pF junction capacitance - enabling robust protection in USB4 and Thunderbolt 4 interfaces without signal integrity degradation.
For engineers reviewing the AOZ8662BLT-05 datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage (7 V at 9 A), reverse working voltage (5 V), bidirectional conduction, WLCSP0.43x0.23-2 package compatibility, and -40°C to +125°C operational range.
Technical Context
The AOZ8662BLT-05 implements a snapback-based bidirectional TVS structure with dynamic resistance of 0.25 Ω, enabling fast response to transients while maintaining low clamping under high-current surges. Its TLP-tested clamping behavior shows 3 V at 1 A and 7 V at 9 A under 100 ns pulse conditions, and it sustains 60 W peak pulse power per IEC 61000-4-5 (8/20 µs).
Designed for I/O-to-I/O protection, the device operates symmetrically across both polarities with holding voltage of 1.5 V and breakdown voltage ≥9 V at 100 µA. Junction capacitance remains stable at 1.2 pF (typ) at 0 V bias, critical for preserving signal rise/fall times in >10 Gbps serial links.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Working Voltage | 5 V - defines maximum continuous DC voltage applied without leakage exceeding 100 nA, matching 5 V logic and interface rails. |
| Clamping Voltage (IPP = 9 A) | 7 V - limits transient voltage seen by protected IC during IEC 61000-4-5 lightning surge, staying below typical 8 V I/O absolute max ratings. |
| Junction Capacitance | 1.2 pF - ensures minimal signal distortion and insertion loss on high-speed differential pairs (e.g., USB4 TX/RX). |
| ESD Rating (IEC 61000-4-2) | ±30 kV contact/air - exceeds industrial and consumer ESD immunity requirements, eliminating need for secondary protection stages. |
| Package Size | 0.43 mm × 0.23 mm - occupies <0.1 mm² PCB area, enabling placement directly at connector or SoC I/O pads without routing detours. |
| Operating Temperature | -40°C to +125°C - supports automotive infotainment and industrial edge compute deployments where ambient thermal stress is present. |
Pinout & Package
AOZ8662BLT-05 uses the WLCSP0.43x0.23-2 package: a 2-terminal, bottom-soldered wafer-level chip-scale package with 0.43 mm × 0.23 mm footprint and 0.27 mm height. No external passives or layout keep-out required beyond standard solder mask definition.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode/Cathode (Bidirectional) | Interchangeable terminal - forms symmetrical clamping path between any two I/O lines; no polarity assignment needed in layout. |
| 2 | Anode/Cathode (Bidirectional) | Interchangeable terminal - completes bidirectional ESD path; enables I/O-to-I/O or I/O-to-GND configurations without redesign. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional snapback TVS | Enables single-device protection of differential or unidirectional lines without polarity constraints or external biasing. |
| 1.2 pF junction capacitance | Preserves signal integrity up to 20 GHz bandwidth, validated for USB4 Gen 3 (20 Gbps) and Thunderbolt 4 compliance. |
| 7 V clamping at 9 A (8/20 µs) | Keeps downstream PHY voltage within safe margin during lightning-induced surges, preventing latch-up or oxide damage. |
| ±30 kV IEC 61000-4-2 ESD rating | Meets and exceeds IEC/EN 61000-4-2 Level 4, eliminating need for system-level retesting after component substitution. |
| WLCSP0.43x0.23-2 footprint | Reduces PCB real estate by >70% vs. SOD-323 or SC-70 packages, enabling direct placement at high-speed connector pins. |
Applications
| USB4 Interface Protection | Thunderbolt 4 Data Line Protection |
|---|---|
Use Scenario: Protecting differential TX/RX pairs in laptop host controllers and docking stations exposed to user-handling ESD events. IC Role / Device Role: Bidirectional I/O-to-I/O TVS suppressing fast transients before they reach SerDes PHY inputs. Use Value: 1.2 pF capacitance avoids signal jitter increase; ±30 kV ESD rating ensures compliance without additional shielding or grounding layers. | Use Scenario: Safeguarding Thunderbolt 4 controller I/O pins in compact mobile workstations where board space limits discrete protection options. IC Role / Device Role: Low-capacitance transient suppressor placed directly at connector pad to minimize stub length and impedance discontinuity. Use Value: 0.43 mm × 0.23 mm WLCSP allows co-location with 0.4 mm pitch connectors, reducing inductance and improving high-frequency clamping efficacy. |
| PCI Express Gen 4/5 Add-in Card ESD Guard | Mobile Phone High-Speed Interface Protection |
Use Scenario: Protecting PCIe 4.0/5.0 differential lanes on GPU or NVMe expansion cards subjected to hot-plug and handling surges. IC Role / Device Role: Bidirectional TVS placed across each differential pair to clamp common-mode and differential transients simultaneously. Use Value: 7 V clamping at 9 A prevents receiver input overvoltage during 8/20 µs surge events, maintaining link training stability. | Use Scenario: Shielding MIPI D-PHY and C-PHY camera/display interfaces in smartphones against human-body ESD during assembly and end-user operation. IC Role / Device Role: Ultra-compact TVS integrated into flex circuit routing near image sensor or display driver IC. Use Value: -40°C to +125°C rating supports operation under battery thermal stress; 100 nA leakage avoids battery drain in always-on sensor modes. |
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, DO-214AC package (4.3 mm × 2.6 mm), 600 W peak power, 600 pF capacitance | Requires separate devices per polarity; unsuitable for high-speed differential lines due to excessive capacitance | Select only for low-frequency power rail protection where size and speed are not constraints |
| TPD4E05U06DQAR | Quad-channel, 0.65 mm × 1.0 mm DQFN, 0.5 pF per channel, 5 V VRWM, ±12 kV ESD rating | Offers multi-line integration but lower ESD rating; not rated for IEC 61000-4-5 9 A surge | Prefer for space-constrained multi-lane interfaces where 9 A surge immunity is not required |
Compared with SMAJ5.0A and TPD4E05U06DQAR, the AOZ8662BLT-05 uniquely combines 5 V operation, ±30 kV ESD, 9 A surge capability, and 1.2 pF capacitance in a 0.1 mm² footprint - making it the only option qualified for next-gen USB4/Thunderbolt 4 line protection without performance trade-offs.
Availability
AOZ8662BLT-05 is available at Aetrix Electronics and suitable for USB4 interface design, Thunderbolt 4 docking station development, and PCIe Gen 5 add-in card production requiring stable component supply and RoHS-compliant sourcing.
Supply support for AOZ8662BLT-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 efficiency-critical applications.
The AOZ8662BLT-05 belongs to AOS's ultra-low-capacitance TVS portfolio, engineered specifically for ESD and surge protection of high-bandwidth serial interfaces without compromising signal fidelity.
FAQ
What is the maximum clamping voltage of AOZ8662BLT-05 under IEC 61000-4-5 8/20 µs surge conditions?
The AOZ8662BLT-05 clamps to 7 V when subjected to a 9 A peak pulse current per IEC 61000-4-5 (8/20 µs). This value is measured at the device terminals and ensures protected ICs remain within safe operating voltage margins. The clamping performance is verified using standardized surge waveforms and is guaranteed across the full -40°C to +125°C temperature range.
Does AOZ8662BLT-05 support bidirectional ESD protection without external biasing?
Yes, AOZ8662BLT-05 is inherently bidirectional due to its symmetrical snapback TVS structure. It provides identical ±30 kV IEC 61000-4-2 ESD protection in both polarities without requiring external voltage bias or polarity-specific layout. Pins 1 and 2 are functionally interchangeable, simplifying PCB routing for differential or single-ended I/O lines.
What is the junction capacitance of AOZ8662BLT-05 and how does it impact high-speed signal integrity?
The AOZ8662BLT-05 exhibits 1.2 pF typical junction capacitance at 0 V bias and 1 MHz. This ultra-low value minimizes insertion loss and phase distortion on high-speed differential pairs such as USB4 Gen 3 (20 Gbps) and Thunderbolt 4, preserving eye diagram opening and jitter budgets. Measured capacitance remains stable across operating voltage, ensuring consistent performance in dynamic signal environments.
Is AOZ8662BLT-05 compatible with lead-free reflow processes?
Yes, AOZ8662BLT-05 is manufactured in a RoHS-compliant, lead-free WLCSP0.43x0.23-2 package with Pb-free plating. It is qualified for standard JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) and withstands peak reflow temperatures up to 260°C. The device meets IPC/JEDEC standards for solderability and thermal cycling reliability in automated SMT assembly.
What is the reverse working voltage (VRWM) specification for AOZ8662BLT-05 and why is it important?
The AOZ8662BLT-05 has a reverse working voltage (VRWM) of 5 V, meaning it remains in high-impedance state with ≤100 nA leakage up to this DC voltage. This matches standard 5 V interface rails (e.g., USB VBUS-adjacent data lines) and ensures no signal attenuation or power loss during normal operation while providing full protection during transients.
AOZ8662BLT-05 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package/Case:
- 01005 (0402 Metric)
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 7V (Typ)
- Current - Peak Pulse (10/1000µs):
- 9A (8/20µs)
- Power - Peak Pulse:
- 60W
- Power Line Protection:
- No
- Applications:
- USB
- Capacitance @ Frequency:
- 1.2pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-WLCSP (0.43x0.23)
AOZ8662BLT-05 FAQ
1.How can I place an order for AOZ8662BLT-05 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8662BLT-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 AOZ8662BLT-05 reliable?
The price and inventory of AOZ8662BLT-05 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8662BLT-05 is usually 5 days.
3.What payment methods are accepted for AOZ8662BLT-05?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8662BLT-05 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8662BLT-05?
AOZ8662BLT-05 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8662BLT-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 AOZ8662BLT-05?
For technical support, including AOZ8662BLT-05 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8662BLT-05 requirements.
6.How does Aetrix verify that AOZ8662BLT-05 is sourced from the original manufacturer or authorized distributors?
All AOZ8662BLT-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 AOZ8662BLT-05 meets industry standards.
7.What is the process for return or replacement of AOZ8662BLT-05?
All AOZ8662BLT-05 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8662BLT-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 AOZ8662BLT-05 part is unused and in its original packaging.
Return procedure for AOZ8662BLT-05:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AOZ8662BLT-05 Tags
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