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Alpha & Omega Semiconductor Inc. AOZ8212CI-05L
- Part No.:
- AOZ8212CI-05L
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AOZ8212CI-05L.pdf
- Description:
- TVS DIODE 5VWM 15VC SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:7,213
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Product details
Overview
AOZ8212CI-05L from Alpha & Omega Semiconductor is a two-line bidirectional TVS diode in SOT-23A package, designed to protect 5 V data lines against ESD (±30 kV contact/air), lightning surges (9 A, 8/20 µs), and EFT (±40 A). It features low clamping voltage (11.0 V @ 1 A, 15.0 V @ 10 A), low capacitance (3.5 pF typ), and operates from –40 °C to +85 °C ambient.
For engineers reviewing the AOZ8212CI-05L datasheet, pinout, applications, or equivalent options, key selection criteria include working peak reverse voltage (5.0 V), breakdown voltage (7.0 V min @ 5 mA), reverse leakage (<1.0 µA), and IEC 61000-4-2/4-4/4-5 compliance for portable electronics protection.
Technical Context
The AOZ8212CI-05L integrates two identical bidirectional TVS elements in a single SOT-23A package, enabling simultaneous protection of two independent signal lines without polarity constraints. Its low 3.5 pF typical capacitance ensures minimal signal distortion on high-speed interfaces like USB 2.0 or I²C.
Clamping occurs at 11.0 V under 1 A transient and rises to 15.0 V at 10 A, maintaining safe overvoltage margins for 5 V logic systems. The device meets IEC 61000-4-2 Level 4 (±8 kV contact) with significant margin (±30 kV), and supports IEC 61000-4-5 surge immunity up to 9 A (8/20 µs).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Peak Reverse Voltage | 5.0 V - Matches standard 5 V supply rails and ensures no leakage during normal operation. |
| Breakdown Voltage (min @ 5 mA) | 7.0 V - Triggers clamping before damage to downstream 5 V ICs. |
| Clamping Voltage @ 1 A | 11.0 V - Limits transient voltage to safe level for 5 V logic inputs. |
| Clamping Voltage @ 10 A | 15.0 V - Maintains robust protection under high-energy 8/20 µs surges. |
| Capacitance @ 0 V, 1 MHz | 3.5 pF (typ) - Enables use on USB 2.0, HDMI DDC, and other >10 Mbps data lines. |
| ESD Rating (IEC 61000-4-2) | ±30 kV contact / ±30 kV air - Exceeds Level 4 requirement by 275%, ensuring field reliability. |
| Surge Current (IEC 61000-4-5) | 9 A (8/20 µs) - Withstands induced lightning transients in portable equipment enclosures. |
Pinout & Package
SOT-23A package: 3-pin surface-mount, 2.90 mm × 1.30 mm × 0.95 mm body, gull-wing leads, JEDEC TO-236HAA compliant. RoHS-compliant, halogen-free Green Product.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | I/O Line 1 Anode/Cathode | Bidirectional terminal for first protected signal line; symmetric conduction path. |
| 2 | GND / Common Reference | Shared ground reference for both TVS paths; must connect to low-impedance system ground. |
| 3 | I/O Line 2 Anode/Cathode | Bidirectional terminal for second protected signal line; electrically isolated from Pin 1. |
Key Features
| Feature | Design Value |
|---|---|
| IEC 61000-4-2 ESD immunity | ±30 kV contact/air - Eliminates need for secondary ESD stages in handheld device front-end designs. |
| Low clamping voltage | 11.0 V @ 1 A - Keeps protected ICs within absolute maximum ratings during fast transients. |
| Low signal-line capacitance | 3.5 pF typical - Preserves signal integrity on 480 Mbps USB 2.0 differential pairs. |
| Two-line bidirectional protection | Single-device dual-channel architecture - Reduces BOM count and PCB area vs. discrete diode arrays. |
| IEC 61000-4-4 EFT immunity | ±40 A - Suppresses burst noise from switch-mode power supplies and motor drivers. |
Applications
| USB 2.0 Data Lines | Keypad/Button Interface |
|---|---|
Use Scenario: Protecting D+ and D– lines of USB 2.0 ports in smartphones and tablets against user-hand ESD events. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor placed directly at connector entry point. Use Value: 3.5 pF capacitance prevents signal rise-time degradation; ±30 kV ESD rating exceeds IEC 61000-4-2 requirements by 275%. | Use Scenario: Shielding mechanical keypad matrix rows/columns from ESD during button press in industrial handheld terminals. IC Role / Device Role / Timing Role: Two-channel clamp protecting two independent low-voltage digital input lines. Use Value: 5.0 V working voltage matches microcontroller GPIO thresholds; 11.0 V clamping prevents latch-up in 5 V logic. |
| Notebook Computer Touchpad | Digital Camera Control Interface |
Use Scenario: Safeguarding I²C-based touchpad controller communication lines (SDA/SCL) from ESD coupling through flex cables. IC Role / Device Role / Timing Role: Low-capacitance bidirectional protector on 3.3–5 V I²C bus segments. Use Value: 3.5 pF capacitance avoids clock stretching or false ACK/NACK; ±30 kV air discharge withstand enables thin bezel design. | Use Scenario: Protecting lens focus/motor control signals and image sensor configuration lines in compact digital cameras. IC Role / Device Role / Timing Role: Dual-line TVS on bidirectional command/data lines between main SoC and camera module. Use Value: 15.0 V clamping at 10 A ensures survival of hot-plug transients; SOT-23A footprint saves space in tight optical module layouts. |
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 | Unidirectional, SMA package (4.5 × 2.7 mm), higher capacitance (>100 pF), 5.0 V VRWM, 100 W PPP. | Requires separate devices per line; unsuitable for high-speed data due to capacitance. | Select AOZ8212CI-05L when dual-line, low-capacitance, bidirectional protection is required on space-constrained PCBs. |
| TPD2E001DRSR | Two-line bidirectional, SOT-23-6 package, 3.5 pF typ, 5.5 V VRWM, ±8 kV IEC 61000-4-2 contact. | Limited to ±8 kV ESD - insufficient for ruggedized portable designs requiring ±30 kV. | Choose AOZ8212CI-05L where full IEC 61000-4-2 Level 4+ immunity is mandatory for consumer-facing interfaces. |
Compared with SMAJ5.0A and TPD2E001DRSR, the AOZ8212CI-05L uniquely delivers dual-line bidirectional protection, ±30 kV ESD rating, and 3.5 pF capacitance in a 2.9 × 1.3 mm SOT-23A footprint-enabling single-device safeguarding of high-speed 5 V data paths where board space and field reliability are critical.
Availability
AOZ8212CI-05L is available at Aetrix Electronics and suitable for USB 2.0 interface protection, keypad/button ESD hardening, and notebook touchpad I²C line safeguarding requiring stable component supply across production lifecycles.
Supply support for AOZ8212CI-05L 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 AOZ8212 family targets compact, high-reliability ESD protection for portable electronics, emphasizing low capacitance, bidirectional symmetry, and industry-leading IEC 61000-4-2 margin.
FAQ
What is the working peak reverse voltage of the AOZ8212CI-05L?
The AOZ8212CI-05L has a working peak reverse voltage (VRWM) of 5.0 V, meaning it remains non-conductive under normal 5 V rail operation while providing precise clamping onset above this threshold. This value is confirmed in the Electrical Characteristics table on page 2 of the official datasheet and aligns with its intended use on 5 V data lines such as USB 2.0 and I²C interfaces.
Does the AOZ8212CI-05L support bidirectional transient suppression on both protected lines?
Yes, the AOZ8212CI-05L provides true bidirectional suppression on both I/O1 and I/O2 pins, as confirmed by its symmetrical clamping behavior and schematic symbol in the Typical Application section. Each channel conducts equally for positive and negative transients, eliminating polarity concerns during layout and enabling protection of AC-coupled or floating signal lines without external biasing.
What is the maximum clamping voltage of the AOZ8212CI-05L under a 10 A surge?
The AOZ8212CI-05L exhibits a maximum clamping voltage of 15.0 V when subjected to a 10 A, 8/20 µs surge current pulse, as specified in the Electrical Characteristics table. This value ensures downstream 5 V logic components remain within their absolute maximum voltage ratings during high-energy transients, including those defined by IEC 61000-4-5.
Is the AOZ8212CI-05L RoHS compliant and halogen-free?
Yes, the AOZ8212CI-05L is an AOS Green Product, fully RoHS compliant and manufactured with reduced halogen content. This is explicitly stated in the Ordering Information section on page 2 of the datasheet, and the device carries the "Green Product" designation in its part number table.
What package type does the AOZ8212CI-05L use, and what are its key dimensions?
The AOZ8212CI-05L uses the SOT-23A package, a 3-pin gull-wing surface-mount variant conforming to JEDEC TO-236HAA. Key dimensions are 2.90 mm length, 1.30 mm width, and 0.95 mm height (nominal), with lead pitch of 0.95 mm. These values are documented in the Package Dimensions drawing on page 4 of the datasheet.
AOZ8212CI-05L Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 2
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 7V
- Voltage - Clamping (Max) @ Ipp:
- 15V
- Current - Peak Pulse (10/1000µs):
- 5A (8/20µs)
- Power - Peak Pulse:
- 125W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 3.5pF @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23A-3
AOZ8212CI-05L FAQ
1.How can I place an order for AOZ8212CI-05L through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8212CI-05L 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 AOZ8212CI-05L reliable?
The price and inventory of AOZ8212CI-05L are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8212CI-05L is usually 5 days.
3.What payment methods are accepted for AOZ8212CI-05L?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8212CI-05L transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8212CI-05L?
AOZ8212CI-05L orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8212CI-05L 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 AOZ8212CI-05L?
For technical support, including AOZ8212CI-05L datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8212CI-05L requirements.
6.How does Aetrix verify that AOZ8212CI-05L is sourced from the original manufacturer or authorized distributors?
All AOZ8212CI-05L 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 AOZ8212CI-05L meets industry standards.
7.What is the process for return or replacement of AOZ8212CI-05L?
All AOZ8212CI-05L units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8212CI-05L, 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 AOZ8212CI-05L part is unused and in its original packaging.
Return procedure for AOZ8212CI-05L:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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