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Alpha & Omega Semiconductor Inc. AOZ8651BDT-03
- Part No.:
- AOZ8651BDT-03
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 0201 (0603 Metric)
- Datasheet:
-
AOZ8651BDT-03.pdf
- Description:
- 1 CHANNEL (0.5PF) BIDIRECTIONAL
- Quantity:
- Payment:
- Shipping:
Inventory:5,078
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Product details
Overview
AOZ8651BDT-03 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, 3.3 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-03 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-03 implements a silicon avalanche-based bidirectional clamping structure optimized for high-speed signal integrity. Its 0.5 pF capacitance and sub-1 Ω dynamic resistance (0.25 Ω typ.) minimize signal distortion on USB 2.0, HDMI, and MIPI interfaces while maintaining robust ESD immunity.
It operates across –40°C to +125°C ambient, with a 3.3 V VRWM and 6–12 V breakdown range (VBR at 10 µA), enabling direct integration into 3.3 V rail protection without level-shifting. Clamping voltage is specified at 3.5 V (1 A TLP) and 7.5 V (16 A TLP), ensuring safe voltage limiting during fast transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Working Voltage (VRWM) | 3.3 V - matches standard 3.3 V I/O rails without overvoltage risk during normal operation |
| Junction Capacitance (CJ) | 0.5 pF - preserves signal integrity on >480 Mbps USB 2.0 and MIPI D-PHY channels |
| ESD Rating (IEC 61000-4-2) | ±30 kV air / ±30 kV contact - exceeds Level 4 requirement (±15 kV/±8 kV) by 100% |
| Clamping Voltage (VCL) | 7.5 V at 16 A TLP - limits transient overvoltage below IC damage thresholds for 3.3 V logic |
| Peak Pulse Current (IPP) | 7 A (8/20 µs) - withstands lightning-surge events per IEC 61000-4-5 |
| Dynamic Resistance (RDNY) | 0.25 Ω - ensures rapid voltage collapse and minimal energy dissipation during ESD events |
Pinout & Package
AOZ8651BDT-03 uses a 2-terminal DFN 0.6 mm × 0.3 mm package (DFN 0.6x0.3A_2L, EP2) with exposed paddle. No internal die bonding or thermal vias are required due to low power dissipation; land pattern follows AOS-recommended dimensions (E1 = 0.60 mm, D1 = 0.30 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode/Cathode (bidirectional) | Shared terminal for symmetrical clamping - no polarity assignment; connects to protected signal line |
| Pin 2 | Anode/Cathode (bidirectional) | Shared terminal opposite Pin 1; forms differential clamp pair across I/O line |
| Exposed Pad | Thermal & Electrical Reference | Not electrically connected internally; used for PCB heat sinking and mechanical stability only |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional ESD clamping | Enables single-device protection of AC-coupled or differential high-speed lines (e.g., USB D+/D−) without polarity concerns |
| 0.5 pF junction capacitance | Reduces insertion loss and reflection on 480 Mbps+ data paths, avoiding eye diagram degradation |
| 7.5 V clamping at 16 A TLP | Keeps downstream 3.3 V transceivers within safe operating area during worst-case ESD strikes |
| RoHS-compliant 0201 footprint | Supports automated placement in ultra-dense mobile PCBs where board area is constrained to <0.2 mm² per protection device |
Applications
| USB 2.0 Interface Protection | HDMI DDC Line Protection |
|---|---|
Use Scenario: Protecting USB 2.0 D+ and D− lines in smartphones against repeated ESD events during plug/unplug cycles. IC Role / Device Role / Timing Role: Bidirectional TVS diode placed directly at connector, clamping transients before they reach the USB PHY. Use Value: 0.5 pF capacitance prevents signal rise-time degradation, preserving full 480 Mbps bandwidth while meeting ±30 kV IEC 61000-4-2. | Use Scenario: Safeguarding HDMI DDC (I²C) clock/data lines in tablets from ESD-induced bus lockup or EEPROM corruption. IC Role / Device Role / Timing Role: Low-capacitance TVS placed inline on 3.3 V DDC lines to suppress contact discharge without loading the 100 kHz I²C bus. Use Value: 3.3 V VRWM aligns with DDC voltage levels; 7.5 V clamping prevents latch-up in HDMI controller I/O cells. |
| MIPI D-PHY Data Lane Protection | Smartphone Antenna Switch Control Line Protection |
Use Scenario: Shielding MIPI D-PHY high-speed data lanes (1–2 Gbps) in camera modules from ESD during flex-cable mating. IC Role / Device Role / Timing Role: Ultra-low-capacitance TVS mounted at FPC connector to minimize jitter and maintain eye opening. Use Value: 0.5 pF capacitance avoids measurable bit-error-rate increase; ±30 kV rating covers factory handling and end-user ESD exposure. | Use Scenario: Protecting GPIO-controlled antenna switch enable/disable lines in LTE/5G front-end modules from ESD-induced false toggling. IC Role / Device Role / Timing Role: Bidirectional clamp on 1.8 V or 3.3 V control lines to prevent unintended RF path switching during ESD events. Use Value: 3.3 V VRWM supports dual-voltage designs; low leakage (<50 nA) avoids DC current draw that could shift bias points. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ3.3A | Unidirectional, DO-214AC package (4.5 mm × 3.9 mm), 100 pF capacitance, 12.3 V clamping at 10 A | Requires polarity-aware layout; unsuitable for AC-coupled or differential lines; used in power-rail protection | Select only for non-high-speed, unidirectional 3.3 V rail protection where board space is not constrained |
| TPD2E001DRYR | 2-channel bidirectional, 0402 DFN, 1.3 pF per channel, 3.6 V VRWM, 9 V clamping at 1 A | Higher capacitance limits use to ≤100 Mbps interfaces; dual-channel reduces component count but increases cost per line | Prefer when protecting two adjacent low-speed lines (e.g., I²C SDA/SCL) with shared footprint efficiency |
Compared with SMAJ3.3A and TPD2E001DRYR, the AOZ8651BDT-03 uniquely delivers bidirectional clamping, 0.5 pF capacitance, and 0201 size - making it the only option among the three suitable for 480 Mbps USB 2.0 or 2 Gbps MIPI D-PHY line protection in ultra-thin mobile PCBs.
Availability
AOZ8651BDT-03 is available at Aetrix Electronics and suitable for mobile phones, notebook computers, and portable devices requiring stable component supply with guaranteed RoHS compliance and -40°C to +125°C operational reliability.
Supply support for AOZ8651BDT-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 and Omega Semiconductor (AOS) is a fabless power semiconductor company specializing in MOSFETs, TVS diodes, and power ICs for high-efficiency, high-density power systems.
The AOZ8651BDT-03 belongs to AOS's ultra-low-capacitance TVS portfolio, engineered specifically for ESD protection of high-speed digital interfaces in consumer portable electronics where board space and signal fidelity are critical constraints.
FAQ
What is the maximum clamping voltage of the AOZ8651BDT-03 under IEC 61000-4-5 surge conditions?
The AOZ8651BDT-03 has a clamping voltage of 6 V at 7 A (8/20 µs waveform) per IEC 61000-4-5 testing. This value is measured under standardized lightning surge conditions and ensures protected circuits remain below destructive voltage thresholds during transient events. The AOZ8651BDT-03 maintains this performance across its full operating temperature range of –40°C to +125°C.
Does the AOZ8651BDT-03 require orientation-specific placement on the PCB?
No - the AOZ8651BDT-03 is a fully bidirectional TVS diode with symmetric electrical characteristics, meaning either terminal can connect to the signal line without affecting ESD protection performance. Its DFN 0201 package has no polarity marking, and the device functions identically regardless of mounting orientation. This simplifies layout and eliminates risk of misplacement during assembly.
Can the AOZ8651BDT-03 be used to protect 1.8 V I/O lines?
Yes - although the AOZ8651BDT-03 has a 3.3 V reverse working voltage (VRWM), its low leakage current (<50 nA at 3.3 V) and 6–12 V breakdown range ensure compatibility with 1.8 V systems. It will not conduct during normal 1.8 V operation and still provides full ±30 kV ESD protection. However, clamping occurs at higher voltages than 1.8 V logic tolerances, so system-level margin analysis is recommended.
What is the thermal performance of the AOZ8651BDT-03's exposed paddle?
AOZ8651BDT-03's exposed paddle (EP2 variant) is not electrically connected but improves thermal conduction from the die to the PCB. With standard solder paste and 2–4 thermal vias under the pad, junction-to-board thermal resistance is reduced by ~30% versus non-exposed variants. This enhances reliability during repetitive ESD events, though steady-state power dissipation remains negligible (<1 mW) due to low duty-cycle transient operation.
Is the AOZ8651BDT-03 compliant with automotive AEC-Q200 requirements?
No - the AOZ8651BDT-03 is not AEC-Q200 qualified. It is rated for –40°C to +125°C ambient operation and RoHS compliance, but lacks the stress testing, failure analysis, and qualification documentation required for automotive-grade components. For automotive infotainment or ADAS applications, AOS offers AEC-Q200-qualified alternatives such as the AOZ8651QBDT-03, which shares identical electrical specs but includes full automotive qualification.
AOZ8651BDT-03 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):
- 3.3V (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-03 FAQ
1.How can I place an order for AOZ8651BDT-03 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8651BDT-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 AOZ8651BDT-03 reliable?
The price and inventory of AOZ8651BDT-03 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8651BDT-03 is usually 5 days.
3.What payment methods are accepted for AOZ8651BDT-03?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8651BDT-03 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8651BDT-03?
AOZ8651BDT-03 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8651BDT-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 AOZ8651BDT-03?
For technical support, including AOZ8651BDT-03 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8651BDT-03 requirements.
6.How does Aetrix verify that AOZ8651BDT-03 is sourced from the original manufacturer or authorized distributors?
All AOZ8651BDT-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 AOZ8651BDT-03 meets industry standards.
7.What is the process for return or replacement of AOZ8651BDT-03?
All AOZ8651BDT-03 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8651BDT-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 AOZ8651BDT-03 part is unused and in its original packaging.
Return procedure for AOZ8651BDT-03:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AOZ8651BDT-03 Tags
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