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Alpha & Omega Semiconductor Inc. AOZ8651BDT-05
- Part No.:
- AOZ8651BDT-05
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 0201 (0603 Metric)
- Datasheet:
-
AOZ8651BDT-05.pdf
- Description:
- 1 CHANNEL LOW CAP TVS
- Quantity:
- Payment:
- Shipping:
Inventory:9,178
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Product details
Overview
AOZ8651BDT-05 from Alpha and Omega Semiconductor is a single-channel bidirectional TVS diode in a 0201 DFN package, rated for ±30 kV IEC 61000-4-2 ESD protection, 0.5 pF junction capacitance, 5 V reverse working voltage, and 7 A peak pulse current - designed to protect high-speed data lines in space-constrained portable electronics.
For engineers reviewing the AOZ8651BDT-05 datasheet, pinout, applications, or equivalent options, key selection criteria include low-clamp performance (7.5 V at 16 A TLP), ultra-small footprint (0.6 mm × 0.3 mm), bidirectional surge suppression, and compatibility with IEC 61000-4-5 (7 A, 8/20 µs) and HBM (±30 kV) standards.
Technical Context
The AOZ8651BDT-05 implements a silicon avalanche-based bidirectional clamping structure optimized for transient suppression on differential or single-ended signal lines. Its 0.5 pF capacitance and sub-8 V clamping at 7 A (IEC 61000-4-5) enable minimal signal distortion on USB 2.0, HDMI, or MIPI interfaces.
It operates across –40°C to +125°C ambient, with reverse breakdown voltage specified between 6 V and 12 V at 10 µA, and dynamic resistance of 0.25 Ω measured over 1–16 A TLP sweep - confirming fast response and stable clamping under repetitive transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Rating (IEC 61000-4-2) | ±30 kV air & contact discharge - meets Level 4+ immunity without external shielding |
| Junction Capacitance | 0.5 pF at 0 V, 1 MHz - preserves signal integrity on >480 Mbps USB 2.0 lines |
| Clamping Voltage | 7.5 V at 16 A TLP - limits downstream IC stress during 8/20 µs surges |
| Reverse Working Voltage | 5 V - matches standard logic I/O rails and USB VBUS tolerance |
| Peak Pulse Current | 7 A (8/20 µs) - handles lightning-induced surges per IEC 61000-4-5 |
| Package | DFN 0.6 mm × 0.3 mm, 2-terminal - enables placement adjacent to connectors on dense PCBs |
Pinout & Package
AOZ8651BDT-05 uses a 2-terminal DFN 0.6 × 0.3 mm package (A_2L) with exposed paddle; terminals are non-polarized and function as symmetrical anode/cathode pair for bidirectional clamping.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal connects to protected line; no polarity assignment required |
| Terminal 2 | Anode/Cathode (bidirectional) | Paired with Terminal 1 to form symmetric clamping path across signal line |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional ESD clamping | Protects AC-coupled or differential signals (e.g., USB D+/D−) without polarity constraints |
| 0.5 pF junction capacitance | Minimizes insertion loss and timing skew on 480 Mbps high-speed data paths |
| 7.5 V clamping at 16 A TLP | Ensures downstream 5 V logic ICs remain below absolute maximum ratings during surge events |
| 0201 footprint (0.6 × 0.3 mm) | Reduces PCB area by >50% vs. 0402 TVS, enabling placement within 2 mm of I/O connectors |
Applications
| USB 2.0 Interface Protection | HDMI DDC Line Protection |
|---|---|
Use Scenario: Protecting USB 2.0 D+ and D− lines in smartphones against ESD events during cable insertion or handling. IC Role / Device Role / Timing Role: Bidirectional TVS diode placed directly at USB connector, clamping transients before they reach the USB transceiver. Use Value: 0.5 pF capacitance prevents signal rise-time degradation, maintaining full 480 Mbps compliance while surviving ±30 kV contact discharge. | Use Scenario: Safeguarding HDMI DDC (Display Data Channel) SDA/SCL lines in tablets from ESD during hot-plug detection. IC Role / Device Role / Timing Role: Low-capacitance TVS on 5 V-tolerant I²C bus lines, positioned between HDMI receptacle and level-shifter IC. Use Value: Sub-8 V clamping ensures EEPROM and sink ICs stay within 5.5 V absolute max rating, even under 7 A lightning surges. |
| MIPI D-PHY Data Lanes | Mobile Audio Jack ESD Protection |
Use Scenario: ESD hardening of MIPI D-PHY high-speed data pairs in camera modules of compact mobile devices. IC Role / Device Role / Timing Role: One AOZ8651BDT-05 per differential lane, mounted adjacent to flex connector to minimize stub length. Use Value: 0.5 pF capacitance avoids eye diagram closure at 1.5 Gbps, while ±30 kV ESD rating exceeds IEC 61000-4-2 requirements. | Use Scenario: Protecting 3.5 mm audio jack microphone and ground return paths in noise-sensitive earbud designs. IC Role / Device Role / Timing Role: Bidirectional TVS on unbalanced analog audio lines referenced to system ground, suppressing human-body ESD pulses. Use Value: 5 V working voltage aligns with audio codec I/O rails; 7.5 V clamping prevents pop-noise triggering and ADC saturation. |
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 | DO-214AC package (4.5 × 2.7 mm), 5.0 V unidirectional, 600 W peak power, 100 pF capacitance | Designed for board-level power rail protection, not high-speed signal lines | Select only if space constraints allow larger footprint and signal speed < 10 Mbps |
| ESD5Z5.0T1G | SOD-523 package (1.3 × 0.9 mm), 5.0 V bidirectional, 22 pF capacitance, ±22 kV ESD rating | Higher capacitance limits use to ≤100 Mbps interfaces; lower ESD rating than AOZ8651BDT-05 | Acceptable for cost-sensitive mid-tier accessories where 0.5 pF is not mandatory |
Compared with SMAJ5.0A and ESD5Z5.0T1G, the AOZ8651BDT-05 uniquely delivers 0.5 pF capacitance in a 0201 footprint with ±30 kV ESD rating - making it the only option qualified for 480 Mbps USB 2.0 and 1.5 Gbps MIPI D-PHY protection in premium portable designs.
Availability
AOZ8651BDT-05 is available at Aetrix Electronics and suitable for mobile phones, notebook computers, and portable medical monitors requiring stable component supply with guaranteed RoHS and green-compliance status.
Supply support for AOZ8651BDT-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 AOZ8651BDT-05 belongs to AOS's ultra-low-capacitance TVS portfolio, engineered specifically for ESD robustness and signal fidelity in next-generation portable and wireless devices.
FAQ
What is the clamping voltage of the AOZ8651BDT-05 under IEC 61000-4-5 surge conditions?
The AOZ8651BDT-05 clamps to 6 V at 7 A under IEC 61000-4-5 (8/20 µs) surge conditions, as specified in its Electrical Characteristics table. This ensures protected circuits remain within safe operating limits during lightning-induced transients. The AOZ8651BDT-05 achieves this with low dynamic resistance (0.25 Ω) and maintains stability across its full –40°C to +125°C operating range.
Is the AOZ8651BDT-05 suitable for USB 2.0 data line protection?
Yes, the AOZ8651BDT-05 is explicitly suited for USB 2.0 protection due to its 0.5 pF junction capacitance, which avoids signal integrity degradation at 480 Mbps, and its ±30 kV IEC 61000-4-2 rating, exceeding USB-IF ESD requirements. The AOZ8651BDT-05 bidirectional architecture supports differential D+/D− placement without polarity concerns.
Does the AOZ8651BDT-05 require orientation-specific PCB layout?
No, the AOZ8651BDT-05 is a symmetrical bidirectional device with no anode/cathode designation; either terminal may connect to the protected line or ground reference. Its 2-terminal DFN package eliminates orientation dependency, simplifying layout and reducing assembly errors. This symmetry is intrinsic to the AOZ8651BDT-05's internal structure and confirmed in its Pin Configuration diagram.
What is the maximum operating temperature range for the AOZ8651BDT-05?
The AOZ8651BDT-05 is rated for continuous operation from –40°C to +125°C ambient temperature, matching automotive and industrial-grade requirements. Its junction temperature range aligns with this specification, and thermal performance is validated under reflow and sustained power dissipation conditions per AOS qualification standards. This rating applies directly to the AOZ8651BDT-05, not just the family.
How does the AOZ8651BDT-05 compare to standard 0402 TVS diodes in PCB space usage?
The AOZ8651BDT-05 occupies 0.18 mm² (0.6 mm × 0.3 mm) - less than 30% of a typical 0402 TVS (1.0 mm × 0.5 mm = 0.5 mm²). This reduction allows placement within 1.5 mm of high-speed connectors, minimizing inductance and improving ESD suppression efficacy. The AOZ8651BDT-05 achieves this without sacrificing electrical performance, retaining ±30 kV ESD rating and 0.5 pF capacitance.
AOZ8651BDT-05 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):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 6V (Typ)
- Current - Peak Pulse (10/1000µs):
- 7A (8/20µs)
- Power - Peak Pulse:
- 45W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 0.5pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 0201
AOZ8651BDT-05 FAQ
1.How can I place an order for AOZ8651BDT-05 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8651BDT-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 AOZ8651BDT-05 reliable?
The price and inventory of AOZ8651BDT-05 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8651BDT-05 is usually 5 days.
3.What payment methods are accepted for AOZ8651BDT-05?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8651BDT-05 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8651BDT-05?
AOZ8651BDT-05 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8651BDT-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 AOZ8651BDT-05?
For technical support, including AOZ8651BDT-05 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8651BDT-05 requirements.
6.How does Aetrix verify that AOZ8651BDT-05 is sourced from the original manufacturer or authorized distributors?
All AOZ8651BDT-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 AOZ8651BDT-05 meets industry standards.
7.What is the process for return or replacement of AOZ8651BDT-05?
All AOZ8651BDT-05 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8651BDT-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 AOZ8651BDT-05 part is unused and in its original packaging.
Return procedure for AOZ8651BDT-05:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AOZ8651BDT-05 Tags
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