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Alpha & Omega Semiconductor Inc. AOZ8831DT-24
- Part No.:
- AOZ8831DT-24
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 2-XDFN
- Datasheet:
-
AOZ8831DT-24.pdf
- Description:
- TVS DIODE 24VWM 48VC 2DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,690
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Product details
Overview
AOZ8831DT-24 from Alpha and Omega Semiconductor is an ultra-low-capacitance (0.35 pF), bi-directional TVS diode in a DFN 1.0 × 0.6 mm package, rated for 24 V working peak reverse voltage (VRWM), ±13 kV contact/±15 kV air ESD protection per IEC 61000-4-2 Level 4, and 60 W peak pulse power, designed to protect high-speed data lines in portable electronics.
For engineers reviewing the AOZ8831DT-24 datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage (≤48 V at 5 A), junction temperature range (–40°C to +125°C), low leakage (<0.1 µA), breakdown voltage (26 V min), and RoHS-compliant green packaging for space-constrained PCB layouts.
Technical Context
The AOZ8831DT-24 implements a single-channel, bi-directional avalanche diode structure optimized for transient suppression on unidirectional signal paths. It operates with a 24 V VRWM and achieves clamping voltages of 38 V (at 1 A), 40 V (at 2 A), and 48 V (at 5 A) under 8/20 µs surge conditions.
Its ultra-low 0.35 pF capacitance at 0 V and 1 MHz enables use on USB 2.0, HDMI, and MIPI D-PHY lines without signal integrity degradation. The device meets IEC 61000-4-2 Level 4 ESD immunity and Human Body Model ±15 kV, with thermal limits defined by a –40°C to +125°C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 24 V - Maximum continuous reverse operating voltage before conduction begins |
| CJ | 0.35 pF - Capacitance at 0 V, 1 MHz; preserves signal integrity on >480 Mbps data lines |
| VBR (min) | 26 V - Breakdown voltage threshold where avalanche conduction initiates reliably |
| VCL @ 5 A | 48 V - Clamping voltage during 8/20 µs surge; limits downstream IC stress during transients |
| IPP | 1.2 A - Peak pulse current rating for 8/20 µs waveform; defines surge handling capability |
| ESD Rating (IEC) | ±15 kV air / ±13 kV contact - Full Level 4 compliance for handheld device interface ports |
| Package | DFN 1.0 × 0.6 mm - 2-terminal surface-mount footprint with exposed pad for thermal dissipation |
Pinout & Package
AOZ8831DT-24 uses a 2-pin DFN 1.0 × 0.6 mm package with an exposed thermal pad. Pin 1 and Pin 2 are symmetrical terminals for bi-directional operation; no polarity marking required.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode/Cathode (bi-directional) | Common signal line terminal; connects to protected data line (e.g., USB D+) |
| 2 | Anode/Cathode (bi-directional) | Ground reference terminal; ties to system GND or chassis ground plane |
Key Features
| Feature | Design Value |
|---|---|
| IEC 61000-4-2 Level 4 ESD protection | Enables direct integration into consumer USB/HDMI ports without additional shielding or layout derating |
| 0.35 pF junction capacitance | Minimizes insertion loss and reflection on 480 Mbps USB 2.0 differential pairs |
| 48 V clamping at 5 A surge | Keeps downstream 3.3 V or 5 V logic ICs within safe operating voltage margins during lightning-induced surges |
| DFN 1.0 × 0.6 mm footprint | Reduces PCB area by >60% vs. SOD-323 packages while maintaining thermal performance via exposed pad |
| –40°C to +85°C ambient rating | Supports deployment in battery-powered portable devices exposed to outdoor temperature extremes |
Applications
| USB 2.0 Port Protection | HDMI Interface Protection |
|---|---|
Use Scenario: Protecting USB D+/D– lines in smartphones and tablets against ESD events during cable insertion/removal. IC Role / Device Role / Timing Role: Bi-directional transient voltage suppressor placed directly at connector entry point. Use Value: 0.35 pF capacitance prevents signal rise-time degradation; 48 V clamping ensures connected SoC I/O pins remain below absolute maximum ratings. | Use Scenario: Safeguarding HDMI TMDS channels in portable projectors and docking stations from electrostatic discharge. IC Role / Device Role / Timing Role: Single-line TVS on each differential pair (CLK, D0, D1, D2) to maintain eye diagram integrity. Use Value: Ultra-low capacitance avoids jitter accumulation; ±15 kV air discharge rating exceeds IEC 61000-4-2 requirements for retail environments. |
| MIPI D-PHY Camera Interface | GPS Antenna Feedline Protection |
Use Scenario: Shielding camera module data lanes in automotive rear-view systems from ESD during service access. IC Role / Device Role / Timing Role: One AOZ8831DT-24 per differential lane (CLKP/CLKN, DATAP/DATAN) on flex cable connectors. Use Value: 24 V VRWM matches typical MIPI supply rails; 26 V minimum breakdown avoids false triggering during normal mode operation. | Use Scenario: Guarding GPS L1-band RF feedlines in wearable navigation devices against human-body ESD. IC Role / Device Role / Timing Role: Series-connected TVS between antenna trace and LNA input to shunt transients before amplification. Use Value: 0.35 pF capacitance introduces negligible impedance mismatch at 1.575 GHz; 40 V clamping at 2 A protects sensitive GaAs MMIC front-ends. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A | DO-214AC package (4.5 × 2.7 mm); 350 pF capacitance; 38.9 V VBR; 100 W Ppp | Designed for board-level power rail protection, not high-speed data lines | Select only when PCB space is unconstrained and signal bandwidth < 10 MHz |
| TPD2E001DRYR | 2-channel, 0.8 pF per line, 5 V VRWM, DRY 1.6 × 1.6 mm package | Optimized for dual-line USB 2.0 protection with integrated channel matching | Choose when protecting both D+ and D– simultaneously with matched capacitance and timing |
Compared with SMAJ24A and TPD2E001DRYR, the AOZ8831DT-24 uniquely balances sub-0.4 pF capacitance, 24 V VRWM, and DFN 1.0 × 0.6 mm size-making it the only option qualified for single-line, space-critical, high-speed interfaces like MIPI D-PHY or USB On-The-Go.
Availability
AOZ8831DT-24 is available at Aetrix Electronics and suitable for portable handheld devices, notebook computers, and digital cameras requiring stable component supply with full RoHS and green policy compliance.
Supply support for AOZ8831DT-24 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 AOZ8831DT-24 belongs to AOS's ultra-low-capacitance TVS portfolio, engineered specifically for ESD protection of high-speed serial interfaces in consumer and mobile electronics.
FAQ
What is the maximum clamping voltage of the AOZ8831DT-24 under surge conditions?
The AOZ8831DT-24 has a maximum clamping voltage of 48 V at 5 A peak pulse current (8/20 µs waveform), as specified in its Electrical Characteristics table. This value ensures downstream 24 V-rated circuits remain within safe operating limits during transient events. The AOZ8831DT-24 maintains lower clamping (38 V at 1 A) for smaller surges, providing scalable protection across threat levels.
Does the AOZ8831DT-24 require orientation during PCB placement?
No, the AOZ8831DT-24 is a bi-directional TVS diode with symmetrical pin configuration; Pins 1 and 2 are electrically identical and interchangeable. This eliminates orientation concerns during automated assembly and simplifies layout routing. The AOZ8831DT-24 functions identically regardless of signal direction-ideal for bidirectional data lines like USB or HDMI.
What is the thermal performance limit of the AOZ8831DT-24?
The AOZ8831DT-24 supports a junction temperature range of –40°C to +125°C and an ambient operating range of –40°C to +85°C. Its DFN 1.0 × 0.6 mm package includes an exposed thermal pad that must be soldered to a copper pour for effective heat dissipation. The AOZ8831DT-24 is rated for 60 W peak pulse power but relies on PCB copper mass to sustain repeated surges without thermal runaway.
Can the AOZ8831DT-24 replace a standard SOD-323 TVS diode in an existing design?
Yes-the AOZ8831DT-24 is a direct footprint replacement for many SOD-323 TVS diodes due to its compatible 2-pin configuration and similar thermal pad layout, but its 1.0 × 0.6 mm DFN size is significantly smaller than SOD-323 (1.7 × 1.3 mm). Layout revision may be needed for pad geometry, but the AOZ8831DT-24 offers superior 0.35 pF capacitance and tighter clamping versus legacy parts.
Is the AOZ8831DT-24 compliant with automotive AEC-Q200 standards?
No, the AOZ8831DT-24 is not AEC-Q200 qualified. It is rated for industrial temperature range (–40°C to +85°C ambient) and intended for consumer and portable electronics. For automotive applications requiring AEC-Q200, designers should consider AOS's AEC-Q200-qualified TVS families such as the AOZ88xxQ series. The AOZ8831DT-24 remains suitable for non-safety-critical infotainment accessories outside the powertrain domain.
AOZ8831DT-24 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package/Case:
- 2-XDFN
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 24V (Max)
- Voltage - Breakdown (Min):
- 26V
- Voltage - Clamping (Max) @ Ipp:
- 48V
- Current - Peak Pulse (10/1000µs):
- 1.2A (8/20µs)
- Power - Peak Pulse:
- 60W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 0.35pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-DFN (1x0.6)
AOZ8831DT-24 FAQ
1.How can I place an order for AOZ8831DT-24 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8831DT-24 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 AOZ8831DT-24 reliable?
The price and inventory of AOZ8831DT-24 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8831DT-24 is usually 5 days.
3.What payment methods are accepted for AOZ8831DT-24?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8831DT-24 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8831DT-24?
AOZ8831DT-24 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8831DT-24 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 AOZ8831DT-24?
For technical support, including AOZ8831DT-24 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8831DT-24 requirements.
6.How does Aetrix verify that AOZ8831DT-24 is sourced from the original manufacturer or authorized distributors?
All AOZ8831DT-24 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 AOZ8831DT-24 meets industry standards.
7.What is the process for return or replacement of AOZ8831DT-24?
All AOZ8831DT-24 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8831DT-24, 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 AOZ8831DT-24 part is unused and in its original packaging.
Return procedure for AOZ8831DT-24:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AOZ8831DT-24 Tags
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