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Alpha & Omega Semiconductor Inc. AOZ8854DT-03
- Part No.:
- AOZ8854DT-03
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 6-XFDFN
- Datasheet:
-
AOZ8854DT-03.pdf
- Description:
- 4 CHANNEL LOW CAP TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,371
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Product details
Overview
AOZ8854DT-03 from Alpha and Omega Semiconductor is a 4-channel unidirectional TVS diode array designed to protect SD and SIM card data lines in mobile phones against ESD events. It features ±30 kV IEC 61000-4-2 contact/air discharge rating, 0.7 pF I/O-to-GND capacitance, 3.3 V reverse working voltage, ±9 A IEC 61000-4-5 surge current, and operates from −40°C to +125°C.
For engineers reviewing the AOZ8854DT-03 datasheet, pinout, applications, or equivalent options, this device delivers low-capacitance, high-speed transient suppression for compact portable electronics with strict signal integrity requirements.
Technical Context
The AOZ8854DT-03 integrates eight steering diodes and one TVS element in a single DFN package to route transients to VCC or GND during ESD events. Its architecture enables bidirectional clamping on five I/O lines (four protected channels plus common ground path) while maintaining sub-1 pF capacitance per line.
It supports dual-mode protection: low-voltage clamping (≤5 V at ±16 A TLP) and high-energy surge handling (±9 A, 8/20 μs), with dynamic resistance of 0.18 Ω under 8–16 A pulse conditions - critical for preserving signal rise time on high-speed SD interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Rating (IEC 61000-4-2) | ±30 kV contact & air discharge - ensures robust immunity in handheld device drop-test and handling scenarios |
| Surge Rating (IEC 61000-4-5) | ±9 A (8/20 μs) - withstands lightning-induced surges on exposed card slots |
| Reverse Working Voltage (VRWM) | 3.3 V - matches standard SD/SIM interface supply rails without leakage or false triggering |
| Junction Capacitance (CJ) | 0.7 pF (typ.) - preserves signal integrity on >50 MHz SD clock/data lines |
| Clamping Voltage (VCL) | ≤5 V at ±16 A TLP - limits voltage overshoot below IC damage thresholds during fast transients |
| Dynamic Resistance (RDNY) | 0.18 Ω - minimizes voltage drop across protection path during high-current pulses |
| Operating Temperature Range | −40°C to +125°C TJ - supports full functionality in sealed mobile enclosures under thermal stress |
Pinout & Package
AOZ8854DT-03 is housed in a RoHS-compliant, halogen-free DFN1.3mm × 0.8mm × 0.4mm, 6-lead package with wettable flanks. The package footprint matches JEDEC MO-229WEED, enabling automated optical inspection (AOI) and reflow compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | I/O1 | Protected data line input/output for first channel (e.g., SD_CMD) |
| 2 | GND | Common reference for all four channels and internal TVS cathode |
| 3 | I/O2 | Protected data line input/output for second channel (e.g., SD_CLK) |
| 4 | VCC | Positive rail connection for steering diode anode network |
| 5 | I/O3 | Protected data line input/output for third channel (e.g., SD_D0) |
| 6 | I/O4 | Protected data line input/output for fourth channel (e.g., SD_D1) |
Key Features
| Feature | Design Value |
|---|---|
| Four independent unidirectional channels + shared VCC/GND | Enables discrete protection of SD bus signals (CMD, CLK, D0–D3) without cross-talk or shared impedance paths |
| 0.7 pF I/O-to-GND capacitance | Prevents signal degradation on 50+ MHz SD interfaces while meeting USB 2.0 and UHS-I timing budgets |
| ±30 kV ESD immunity (IEC 61000-4-2) | Exceeds Level 4 system-level ESD requirements for consumer mobile end-equipment certification |
| Low clamping voltage (≤5 V @ ±16 A) | Keeps protected ICs within safe operating area during multi-kV ESD events on exposed connectors |
| DFN1.3×0.8mm_6L package with wettable flanks | Supports AOI-based solder joint inspection and high-yield reflow in fine-pitch mobile PCB assemblies |
Applications
| SD Card Interfaces | SIM Card Slots |
|---|---|
Use Scenario: High-speed SDHC/SDXC memory card insertion and hot-plug operations in smartphones and tablets. IC Role / Device Role / Timing Role: Transient voltage suppressor array placed directly at card connector pins to shunt ESD before reaching host controller. Use Value: Prevents latch-up or gate oxide damage in SD host controllers by limiting transient voltage to ≤5 V at ±16 A peak current. | Use Scenario: Frequent SIM card swapping in consumer handsets exposed to human-body ESD. IC Role / Device Role / Timing Role: Unidirectional TVS array protecting SIM VCC, I/O, RST, and CLK lines against contact discharge. Use Value: Maintains 0.7 pF capacitance per line to avoid skew or jitter on 1–5 MHz SIM clock and data signals. |
| Mobile Phone Baseband Modules | Notebook SD/MMC Readers |
Use Scenario: Integration into baseband PMIC or application processor BGA fanout near SDIO interface traces. IC Role / Device Role / Timing Role: Localized ESD clamp adjacent to SoC SDIO pads, minimizing trace inductance in protection path. Use Value: Achieves <1 ns response time via integrated steering diodes, reducing voltage overshoot by >40% vs. discrete TVS solutions. | Use Scenario: Embedded SD/MMC readers in ultrabooks with space-constrained motherboard layouts. IC Role / Device Role / Timing Role: Single-package solution for all five SD bus lines (CMD, CLK, D0–D3), replacing four discrete TVS devices. Use Value: Reduces PCB area by 65% versus quad-SOD-323 layout while maintaining identical electrical performance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode array applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J33A-Q | Single-channel, 33 V VRWM, 100 pF capacitance - not suitable for high-speed data lines | Designed for power rail protection, not signal-line ESD suppression | Select only for non-high-speed, low-frequency I/O where capacitance is not critical |
| TPD4E001DPYR | 4-channel, 0.5 pF typical capacitance, 3.6 V VRWM, ±12 kV ESD rating - lower ESD immunity than AOZ8854DT-03 | Targeted at USB 2.0 and HDMI, not optimized for SD/SIM card voltage margins | Consider when lower clamping voltage (3.6 V VRWM) is prioritized over maximum ESD robustness |
Compared with SMA6J33A-Q and TPD4E001DPYR, the AOZ8854DT-03 uniquely balances ±30 kV ESD immunity, 3.3 V VRWM alignment with SD/SIM rails, and 0.7 pF capacitance - making it the only option qualified for high-reliability mobile card interface protection per IEC 61000-4-2 Level 4 and JEDEC JESD22-A114F.
Availability
AOZ8854DT-03 is available at Aetrix Electronics and suitable for mobile phone design, SD card interface development, and SIM slot protection requiring stable component supply across high-volume production cycles.
Supply support for AOZ8854DT-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 AOZ8854DT-03 belongs to AOS's ultra-low-capacitance TVS array product line, engineered specifically for ESD protection of high-speed digital interfaces in space-constrained portable electronics.
FAQ
What is the primary circuit role of the AOZ8854DT-03 in mobile phone designs?
The AOZ8854DT-03 serves as a unidirectional TVS diode array that protects SD and SIM card data lines from ESD and surge events. It routes transients to VCC or GND using integrated steering diodes, ensuring signal integrity while clamping voltages to safe levels. Its 0.7 pF capacitance and 3.3 V VRWM make AOZ8854DT-03 ideal for high-speed mobile interfaces without compromising timing margins.
Does the AOZ8854DT-03 support bidirectional signal lines like SDIO?
Yes - although classified as unidirectional due to its internal steering diode topology, the AOZ8854DT-03 protects bidirectional SDIO signals (e.g., CMD, D0–D3) by clamping both positive and negative transients to VCC or GND. Its ±30 kV IEC 61000-4-2 rating and symmetric clamping voltage (±5 V at ±16 A) confirm effective bidirectional transient suppression for AOZ8854DT-03 in real-world SDIO applications.
What is the maximum junction temperature specification for the AOZ8854DT-03?
The AOZ8854DT-03 is rated for a junction temperature range of −40°C to +125°C, as confirmed in the Absolute Maximum Ratings table. This specification allows AOZ8854DT-03 to operate reliably in thermally demanding environments such as sealed smartphone chassis or automotive infotainment SD card bays without derating.
Can the AOZ8854DT-03 replace discrete TVS diodes in existing SD card layouts?
Yes - AOZ8854DT-03 replaces up to four discrete low-capacitance TVS diodes with a single DFN1.3×0.8mm_6L package. Its pinout maps directly to SD bus lines (I/O1–I/O4), VCC, and GND, enabling drop-in replacement in layouts originally designed for quad-SOD-323 or SOT-563 footprints - provided land pattern matches the recommended 1.3 mm × 0.8 mm DFN outline and solder mask defined in the AOZ8854DT-03 datasheet.
Is the AOZ8854DT-03 compliant with environmental regulations?
Yes - AOZ8854DT-03 is RoHS compliant and halogen-free, meeting AOS Green Product standards. Its DFN package contains no lead, cadmium, mercury, hexavalent chromium, PBB, or PBDE, and conforms to JEDEC MSL Level 1 moisture sensitivity requirements - confirming AOZ8854DT-03 suitability for lead-free reflow assembly and global environmental compliance mandates.
AOZ8854DT-03 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package/Case:
- 6-XFDFN
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 4
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 3.3V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 6V
- Current - Peak Pulse (10/1000µs):
- 9A (8/20µs)
- Power - Peak Pulse:
- 54W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 0.7pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-DFN (1.3x0.8)
AOZ8854DT-03 FAQ
1.How can I place an order for AOZ8854DT-03 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8854DT-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 AOZ8854DT-03 reliable?
The price and inventory of AOZ8854DT-03 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8854DT-03 is usually 5 days.
3.What payment methods are accepted for AOZ8854DT-03?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8854DT-03 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8854DT-03?
AOZ8854DT-03 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8854DT-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 AOZ8854DT-03?
For technical support, including AOZ8854DT-03 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8854DT-03 requirements.
6.How does Aetrix verify that AOZ8854DT-03 is sourced from the original manufacturer or authorized distributors?
All AOZ8854DT-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 AOZ8854DT-03 meets industry standards.
7.What is the process for return or replacement of AOZ8854DT-03?
All AOZ8854DT-03 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8854DT-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 AOZ8854DT-03 part is unused and in its original packaging.
Return procedure for AOZ8854DT-03:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AOZ8854DT-03 Tags
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