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Alpha & Omega Semiconductor Inc. AOZ8821DI-05
- Part No.:
- AOZ8821DI-05
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 0201 (0603 Metric)
- Datasheet:
-
AOZ8821DI-05.pdf
- Description:
- TVS DIODE 5VWM 15VC 2-DFN
- Quantity:
- Payment:
- Shipping:
Inventory:8,398
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Product details
Overview
AOZ8821DI-05 from Alpha and Omega Semiconductor is a unidirectional ultra-low capacitance TVS diode in a DFN 0.6 × 0.3 mm package, rated for 5 V working voltage, 0.65 pF capacitance, ±20 kV IEC 61000-4-2 contact ESD protection, and 2 A peak pulse current - designed to protect high-speed data lines in portable electronics.
For engineers reviewing the AOZ8821DI-05 datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage (12 V @ 1 A), reverse leakage (<0.1 µA), breakdown voltage (6.0 V max), junction temperature range (−40°C to +125°C), and RoHS-compliant green packaging for space-constrained PCB layouts.
Technical Context
The AOZ8821DI-05 is a single-line, unidirectional transient voltage suppressor optimized for signal integrity preservation on high-frequency interfaces. Its 0.65 pF capacitance and low clamping voltage (12 V @ 1 A, 13 V @ 2 A) minimize signal distortion while meeting IEC 61000-4-2 Level 4 (±15 kV air/contact) and exceeding ±20 kV contact/air ESD ratings.
It operates within −40°C to +85°C ambient, with junction temperature up to +125°C, and uses a DFN 0.6 × 0.3 mm two-terminal configuration where Cathode (Pin 1) and Anode (Pin 2) define the unidirectional conduction path from signal line to ground during transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Peak Reverse Voltage (VRWM) | 5.0 V - sets maximum continuous operating voltage before conduction begins |
| Breakdown Voltage (VBR) | 6.0 V max - guarantees reliable turn-on at defined overvoltage threshold |
| Clamping Voltage (VCL) | 12 V @ 1 A - limits transient voltage seen by protected IC to safe level |
| Capacitance (CJ) | 0.65 pF @ 0 V, 1 MHz - preserves signal integrity on USB 2.0, HDMI, or MIPI lines |
| ESD Rating (IEC 61000-4-2) | ±20 kV contact / ±20 kV air - exceeds Level 4 immunity requirement |
| Peak Pulse Current (IPP) | 2 A @ 8/20 µs - handles common surge events without degradation |
| Reverse Leakage (IR) | 0.1 µA max @ VRWM - ensures minimal standby power loss and signal loading |
Pinout & Package
AOZ8821DI-05 is housed in a RoHS-compliant, green DFN 0.6 × 0.3 mm package with two terminals and no exposed thermal pad. The compact footprint enables placement directly at connector or IC I/O pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Transient return path | Connected to system ground; sinks ESD/surge current during clamping |
| Anode (Pin 2) | Protected signal input | Connected to high-speed data line (e.g., USB D+, HDMI TMDS); blocks reverse leakage below 5 V |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low capacitance | 0.65 pF - avoids signal attenuation or timing skew on >100 MHz interfaces |
| Low clamping voltage | 12 V @ 1 A - keeps protected IC within absolute maximum ratings during ESD event |
| High ESD robustness | ±20 kV contact discharge - exceeds IEC 61000-4-2 Level 4 for field reliability |
| Small-footprint DFN | 0.6 × 0.3 mm - fits within 0201 footprint constraints for ultra-dense mobile PCBs |
| Green/RoHS compliance | Halogen-free, lead-free construction - meets global environmental regulations |
Applications
| USB 2.0 Data Lines | HDMI Hot-Plug Detection |
|---|---|
Use Scenario: Protecting D+ and D− lines in smartphones and OTG adapters against ESD during cable insertion/removal. IC Role / Device Role: Unidirectional TVS diode placed between connector and USB transceiver IC. Use Value: 0.65 pF capacitance prevents signal rise-time degradation while clamping transients to ≤12 V. | Use Scenario: Safeguarding HDMI HPD (Hot-Plug Detect) pin from user-induced ESD in TVs and set-top boxes. IC Role / Device Role: Single-line transient suppressor tied between HPD line and ground. Use Value: 5 V VRWM aligns with HPD logic-high voltage; ±20 kV ESD rating ensures long-term interface reliability. |
| MIPI D-PHY Lanes | Keypad/Button ESD Protection |
Use Scenario: Shielding camera module's MIPI data lanes from board-level ESD in compact digital cameras. IC Role / Device Role: One AOZ8821DI-05 per differential lane pair (Dn/Dp) on flex cable entry point. Use Value: Sub-1 pF capacitance maintains >800 Mbps data integrity without equalization overhead. | Use Scenario: Adding ESD hardening to mechanical keypad matrix lines in GPS handhelds and industrial remotes. IC Role / Device Role: Discrete TVS on each row/column trace before microcontroller GPIO input. Use Value: Low 0.1 µA leakage avoids false key detection; small DFN allows routing under buttons. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ5.0A | DO-214AC package (4.5 × 2.7 mm), 100 pF capacitance, 13.4 V clamping @ 1 A | Not suitable for >10 MHz signals due to high capacitance; used in power rail or low-speed I/O | Select only for non-high-speed, cost-sensitive designs where board space is not constrained |
| TPD1E05U06DPYR | DFN 1.0 × 0.6 mm, 0.6 pF capacitance, 9.5 V clamping @ 1 A, same 5 V VRWM | Lower clamping improves margin for 3.3 V I/O; slightly larger footprint than AOZ8821DI-05 | Prefer when tighter clamping is required and 0.4 mm extra length is acceptable |
Compared with SMAJ5.0A and TPD1E05U06DPYR, the AOZ8821DI-05 delivers best-in-class 0.65 pF capacitance in the smallest DFN footprint (0.6 × 0.3 mm), enabling direct placement on ultra-high-speed traces where layout parasitics must be minimized - critical for MIPI, USB 2.0, and HDMI interfaces.
Availability
AOZ8821DI-05 is available at Aetrix Electronics and suitable for portable hand-held devices, notebook computers, and digital cameras requiring stable component supply with consistent ESD performance and ultra-low signal loading.
Supply support for AOZ8821DI-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 AOZ8821DI-05 belongs to AOS' ultra-low-capacitance TVS portfolio, engineered specifically for ESD protection of high-speed serial interfaces in space-constrained portable electronics.
FAQ
What is the clamping voltage of the AOZ8821DI-05 at 2 A peak pulse current?
The AOZ8821DI-05 has a maximum clamping voltage of 13 V at 2 A peak pulse current (8/20 µs waveform). This value ensures protected downstream components remain within safe operating limits during high-energy ESD events, and is verified per IEC 61000-4-2 test conditions. The AOZ8821DI-05 maintains this performance across its full operating temperature range.
Does the AOZ8821DI-05 support bidirectional ESD protection?
No, the AOZ8821DI-05 is a unidirectional TVS diode, configured with Cathode (Pin 1) and Anode (Pin 2) to protect positive-going transients on a 5 V signal line referenced to ground. It does not clamp negative excursions beyond −0.7 V forward drop. For bidirectional protection, a separate device such as AOZ8822DI-05 would be required.
What is the maximum reverse leakage current specified for AOZ8821DI-05 at its working voltage?
The AOZ8821DI-05 specifies a maximum reverse leakage current of 0.1 µA at its working peak reverse voltage (VRWM) of 5.0 V and TA = 25°C. This low leakage minimizes DC loading on high-impedance signal nodes and supports reliable operation in battery-powered portable systems where quiescent current matters.
Can AOZ8821DI-05 be used on 3.3 V logic lines?
Yes, the AOZ8821DI-05 can be used on 3.3 V logic lines because its 5.0 V VRWM provides sufficient margin above the 3.3 V nominal rail, and its 6.0 V max breakdown voltage ensures no unintended conduction during normal operation. However, clamping occurs at ≥12 V, so system-level overvoltage tolerance must be verified independently.
Is the AOZ8821DI-05 compatible with reflow soldering processes?
Yes, the AOZ8821DI-05 is qualified for standard Pb-free reflow soldering per JEDEC J-STD-020, with a maximum peak temperature of 260°C. Its DFN 0.6 × 0.3 mm package is designed for compatibility with fine-pitch SMT assembly, and the device meets RoHS and green product requirements including halogen-free materials.
AOZ8821DI-05 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package/Case:
- 0201 (0603 Metric)
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 15V
- Current - Peak Pulse (10/1000µs):
- 5A
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-DFN (0.6x0.3)
AOZ8821DI-05 FAQ
1.How can I place an order for AOZ8821DI-05 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8821DI-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 AOZ8821DI-05 reliable?
The price and inventory of AOZ8821DI-05 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8821DI-05 is usually 5 days.
3.What payment methods are accepted for AOZ8821DI-05?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8821DI-05 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8821DI-05?
AOZ8821DI-05 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8821DI-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 AOZ8821DI-05?
For technical support, including AOZ8821DI-05 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8821DI-05 requirements.
6.How does Aetrix verify that AOZ8821DI-05 is sourced from the original manufacturer or authorized distributors?
All AOZ8821DI-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 AOZ8821DI-05 meets industry standards.
7.What is the process for return or replacement of AOZ8821DI-05?
All AOZ8821DI-05 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8821DI-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 AOZ8821DI-05 part is unused and in its original packaging.
Return procedure for AOZ8821DI-05:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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