My Inquiry
My Account
Alpha & Omega Semiconductor Inc. AOZ8231ADI-05
- Part No.:
- AOZ8231ADI-05
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 2-UDFN
- Datasheet:
-
AOZ8231ADI-05.pdf
- Description:
- TVS DIODE 5VWM 15.5VC 2DFN
- Quantity:
- Payment:
- Shipping:
Inventory:9,516
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AOZ8231ADI-05 from Alpha and Omega Semiconductor is a one-line bi-directional TVS diode in a DFN 1.0 mm × 0.6 mm package, rated for 5 V working peak reverse voltage (VRWM), 13.5 V clamping voltage at 5 A (VCL), and ±30 kV IEC 61000-4-2 contact ESD protection - deployed to safeguard high-speed data lines in portable electronics.
For engineers reviewing the AOZ8231ADI-05 datasheet, pinout, applications, or equivalent options, key selection criteria include clamping performance under 5 A lightning surge (IEC 61000-4-5), low 10.4–14.0 pF capacitance at 0 V, and compatibility with space-constrained PCB layouts requiring RoHS-compliant, halogen-free protection.
Technical Context
The AOZ8231ADI-05 implements a silicon avalanche diode structure optimized for bidirectional transient suppression on single-ended signal lines. It operates symmetrically across ±5 V, with breakdown voltage (VBR) specified at 5.0–5.5 V (min/max @ 1 mA) and guaranteed clamping behavior up to 15.5 V at 12 A peak pulse current.
This device targets high-frequency interfaces where low capacitance (<14 pF) and fast response (<1 ns rise time) are essential to avoid signal integrity degradation. Its 5 A (8/20 µs) IEC 61000-4-5 rating and ±30 kV ESD immunity meet Level 4 requirements without external filtering components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 5.0 V - maximum continuous reverse operating voltage before leakage exceeds 0.1 µA |
| VBR (min @ 1 mA) | 5.0 V - ensures reliable conduction onset during transients above nominal rail |
| VCL @ IPP = 5 A | 13.5 V - peak clamped voltage limiting stress on protected IC I/O pins |
| CJ @ 0 V, 1 MHz | 10.4–14.0 pF - low enough to avoid attenuation on USB 2.0 or audio lines |
| ESD Rating (IEC 61000-4-2) | ±30 kV contact / ±30 kV air - exceeds Level 4 immunity for handheld device compliance |
| IEC 61000-4-5 Surge | 5 A (8/20 µs) - withstands induced lightning surges in industrial-grade portable systems |
| Operating Temp Range | −40 °C to +85 °C ambient - supports deployment in consumer and extended-temperature embedded devices |
Pinout & Package
AOZ8231ADI-05 uses a 2-terminal DFN 1.0 mm × 0.6 mm × 0.5 mm package with bottom-side thermal pad (non-electrical). Terminals are unmarked but electrically symmetrical: both pins serve as bidirectional anode/cathode depending on transient polarity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode/Cathode (bidirectional) | Common connection point for transient current path; no polarity dependency in layout |
| Pin 2 | Anode/Cathode (bidirectional) | Second terminal completing low-inductance path to GND or signal line; identical function to Pin 1 |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints |
| Low 10.4–14.0 pF capacitance | Maintains signal integrity on 480 Mbps USB 2.0 or 24 MHz SPI interfaces |
| 13.5 V clamping at 5 A | Limits downstream IC voltage stress below absolute maximum ratings during surge events |
| DFN 1.0 × 0.6 mm footprint | Reduces PCB area by >60% vs. SOD-323, enabling placement adjacent to connector pins |
| ±30 kV ESD immunity | Eliminates need for secondary ESD staging in cost-sensitive portable designs |
Applications
| USB 2.0 Data Lines | Smartphone Keypad Interfaces |
|---|---|
Use Scenario: Protecting D+ and D− lines in mobile phone USB ports against cable-discharge events and user-hand ESD. IC Role / Device Role: Bidirectional TVS clamp placed directly at USB connector, shunting transients to ground before reaching USB transceiver. Use Value: Prevents latch-up or gate oxide damage in USB PHY ICs while maintaining <14 pF loading for full-speed signaling compliance. | Use Scenario: Shielding mechanical keypad matrix rows/columns in ruggedized handhelds from repeated button-press ESD. IC Role / Device Role: One AOZ8231ADI-05 per key line, mounted between switch node and microcontroller GPIO input. Use Value: Enables direct GPIO connection without series resistors or RC filters, reducing BOM count and board space. |
| Digital Camera Image Sensor I/O | Portable GPS RF Front-End Bias Lines |
Use Scenario: Guarding MIPI CSI-2 clock and data lanes against ESD during lens module mating or battery insertion. IC Role / Device Role: Low-capacitance TVS on each differential pair, placed within 3 mm of sensor connector. Use Value: Clamps transients to ≤13.5 V without distorting 1 GHz+ clock edges, preserving image synchronization. | Use Scenario: Protecting DC bias feeds to GPS LNA and SAW filter in compact antenna modules. IC Role / Device Role: Single-line TVS on 3.3 V or 5 V bias rail, located between DC-DC converter output and RF component input. Use Value: Blocks ESD-induced bias rail collapse that would desensitize GPS receiver front-end during handling. |
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); 5.0 V VRWM; 14.4 V VCL @ 5 A; 100 pF capacitance | Higher clamping voltage and 7× larger capacitance limit use to low-speed DC lines only | Select when board space allows larger package and signal bandwidth <1 MHz |
| TPD2E001DRYR | 2-channel unidirectional TVS in DFN 1.0 × 0.6 mm; 5.5 V VRWM; 12 V VCL @ 1 A; 12 pF per channel | Unidirectional architecture requires separate GND and VCC connections; not suitable for AC-coupled signals | Prefer for dual-rail protection where polarity is fixed and two lines require simultaneous clamping |
Compared with SMAJ5.0A and TPD2E001DRYR, the AOZ8231ADI-05 uniquely combines bidirectional operation, sub-14 pF capacitance, and 5 V VRWM in a 1.0 × 0.6 mm footprint - making it optimal for high-density, high-speed single-line protection where polarity independence and minimal signal loading are mandatory.
Availability
AOZ8231ADI-05 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, smartphone keypad ESD hardening, and digital camera sensor I/O shielding requiring stable component supply and consistent parametric performance across production lots.
Supply support for AOZ8231ADI-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 AOZ8231ADI family was developed to deliver ultra-compact, high-reliability ESD and surge protection for portable electronics with stringent size and signal-integrity constraints.
FAQ
What is the clamping voltage of AOZ8231ADI-05 at 5 A peak pulse current?
The AOZ8231ADI-05 has a maximum clamping voltage (VCL) of 13.5 V when subjected to a 5 A (8/20 µs) transient pulse. This value is measured under standardized test conditions and guarantees that protected circuitry will not experience voltage stress beyond this level during surge events, preserving reliability of downstream ICs such as USB transceivers or microcontroller GPIOs.
Does AOZ8231ADI-05 support bidirectional ESD protection?
Yes, AOZ8231ADI-05 is explicitly designed as a bidirectional TVS diode. Its symmetrical avalanche structure enables equal clamping performance for positive and negative transients, making it suitable for AC-coupled lines like USB D+/D− or audio differential pairs without polarity concerns during layout or assembly.
What is the capacitance range of AOZ8231ADI-05 at zero bias?
The AOZ8231ADI-05 exhibits a typical junction capacitance (CJ) of 10.4–14.0 pF when measured at 0 V reverse bias and 1 MHz frequency. This low, tightly controlled capacitance ensures minimal signal distortion on high-speed interfaces including USB 2.0 and MIPI CSI-2, supporting full-speed data transmission without added termination or equalization.
Is AOZ8231ADI-05 compliant with RoHS and halogen-free standards?
Yes, AOZ8231ADI-05 is fully RoHS compliant and classified as a Green Product by Alpha and Omega Semiconductor, with reduced halogen content. The device meets JEDEC JS709B and IPC-1752A requirements, and its DFN 1.0 × 0.6 mm package contains no lead, brominated flame retardants, or antimony trioxide.
What is the maximum working peak reverse voltage (VRWM) for AOZ8231ADI-05?
The AOZ8231ADI-05 has a working peak reverse voltage (VRWM) of 5.0 V, meaning it remains in high-impedance state with leakage current ≤0.1 µA up to this DC or repetitive AC voltage level. This rating aligns with common 5 V logic rails and ensures stable operation without false triggering during normal system operation.
AOZ8231ADI-05 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package/Case:
- 2-UDFN
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 5.5V
- Voltage - Clamping (Max) @ Ipp:
- 15.5V
- Current - Peak Pulse (10/1000µs):
- 5A (8/20µs)
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 13pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-DFN (1x0.6)
AOZ8231ADI-05 FAQ
1.How can I place an order for AOZ8231ADI-05 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8231ADI-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 AOZ8231ADI-05 reliable?
The price and inventory of AOZ8231ADI-05 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8231ADI-05 is usually 5 days.
3.What payment methods are accepted for AOZ8231ADI-05?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8231ADI-05 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8231ADI-05?
AOZ8231ADI-05 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8231ADI-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 AOZ8231ADI-05?
For technical support, including AOZ8231ADI-05 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8231ADI-05 requirements.
6.How does Aetrix verify that AOZ8231ADI-05 is sourced from the original manufacturer or authorized distributors?
All AOZ8231ADI-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 AOZ8231ADI-05 meets industry standards.
7.What is the process for return or replacement of AOZ8231ADI-05?
All AOZ8231ADI-05 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8231ADI-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 AOZ8231ADI-05 part is unused and in its original packaging.
Return procedure for AOZ8231ADI-05:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AOZ8231ADI-05 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
