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Alpha & Omega Semiconductor Inc. AOZ8310DI-05
- Part No.:
- AOZ8310DI-05
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 2-UDFN
- Datasheet:
-
AOZ8310DI-05.pdf
- Description:
- TVS DIODE 5VWM 16VC 2DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,259
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Product details
Overview
AOZ8310DI-05 from Alpha and Omega Semiconductor is a unidirectional high-power TVS diode in a 1.6 mm × 1.0 mm DFN-2L package, designed for surge and ESD protection of 5 V power rails. It delivers 85 A peak pulse current (8/20 µs), clamps to ≤16 V at 85 A, and supports ±30 kV IEC 61000-4-2 ESD immunity. It is used in USB voltage bus protection where low clamping voltage and minimal capacitance (675 pF) preserve signal integrity.
For engineers reviewing the AOZ8310DI-05 datasheet, pinout, applications, or equivalent options, this page provides verified electrical specifications, thermal and surge ratings, package dimensions, real-world clamping behavior under IEC 61000-4-5 and TLP conditions, and validated alternatives for 5 V rail protection.
Technical Context
The AOZ8310DI-05 employs a silicon avalanche structure optimized for fast response (<1 ns) to transient overvoltages on single-line DC power paths. Its unidirectional configuration enables asymmetric clamping-positive transients are suppressed with 14.3–16 V clamping at 85 A, while negative transients clamp to –6 to –8 V-making it suitable for grounded-rail applications like USB VBUS.
It operates across –40°C to +125°C ambient, with dynamic resistance of 0.05–0.09 Ω (TLP, ±1–30 A), ensuring predictable voltage rise under surge current. Junction capacitance is 675 pF at 0 V and 1 MHz, a trade-off balanced for robust surge handling without excessive filtering of 5 V supply noise.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Working Voltage (VRWM) | 5 V - maximum continuous DC voltage the device blocks without leakage exceeding 1000 nA. |
| Peak Pulse Current (IPP) | 85 A (8/20 µs) - withstands IEC 61000-4-5 surge events up to this level without failure. |
| Clamping Voltage (VCL) | 14.3 V (max) at IPP = 85 A - limits voltage seen by downstream 5 V ICs during worst-case surge. |
| ESD Rating | ±30 kV contact & air (IEC 61000-4-2) - exceeds Level 4 immunity requirements for handheld electronics. |
| Junction Capacitance (CJ) | 675 pF at 0 V, 1 MHz - impacts high-frequency noise filtering but remains compatible with USB 2.0 power rail stability. |
| Package | DFN-2L (1.6 mm × 1.0 mm, 0.5 mm pitch) - ultra-compact footprint for space-constrained mobile PCB layouts. |
| Operating Temperature | –40°C to +125°C - supports automotive cabin and industrial power module environments. |
Pinout & Package
AOZ8310DI-05 uses a 2-terminal DFN-2L package with exposed cathode pad for thermal dissipation. The package measures 1.6 mm × 1.0 mm × 0.55 mm (height), with 0.5 mm pin pitch and RoHS-compliant matte tin plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Input/Line side | Connected to protected 5 V rail (e.g., USB VBUS); conducts during negative transients. |
| Cathode (Pin 2) | Ground reference | Connected to system ground; forms low-impedance path for positive surge current to ground. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional TVS architecture | Enables asymmetric clamping (14.3 V positive / –6 V negative), ideal for grounded 5 V rails where reverse polarity is not expected. |
| 1500 W peak pulse power | Handles high-energy surges per IEC 61000-4-5 without thermal runaway or parametric shift. |
| Dynamic resistance ≤0.09 Ω | Minimizes voltage overshoot during fast-rising transients, improving protection margin for sensitive 5 V logic. |
| 675 pF junction capacitance | Low enough to avoid degrading USB 2.0 VBUS rise/fall times, yet high enough to absorb energy without excessive voltage peaking. |
| ±30 kV ESD rating | Meets and exceeds IEC 61000-4-2 Level 4, eliminating need for secondary ESD stages in portable designs. |
Applications
| USB Voltage Bus Protection | Battery Protection Circuitry |
|---|---|
|
Use Scenario: Protecting USB Type-A/C VBUS lines from hot-plug surges, lightning-induced coupling, and ESD events during insertion. IC Role / Device Role / Timing Role: Primary unidirectional TVS placed directly at connector, shunting transients before they reach USB controller or power switch. Use Value: Clamps 85 A surges to ≤16 V, preserving 5 V tolerance of USB PHY and PMIC components while maintaining 675 pF loading compatible with USB 2.0 timing. |
Use Scenario: Safeguarding lithium-ion battery charging circuits against load dump and reverse-connection transients in portable power banks. IC Role / Device Role / Timing Role: Standalone TVS on battery input rail, operating between battery anode and system ground to suppress positive spikes during charge termination or fault recovery. Use Value: Withstands 1500 W pulses and –40°C to +125°C operation, enabling reliable protection across full battery temperature range without derating. |
| Mobile Device Power Rails | Display Panel Power Interfaces |
|
Use Scenario: Securing 5 V bias rails feeding camera modules, sensors, or audio codecs in smartphones and tablets. IC Role / Device Role / Timing Role: Point-of-load TVS adjacent to IC power pins, minimizing trace inductance to ensure sub-ns response to ESD. Use Value: ±30 kV ESD immunity and 0.05 Ω dynamic resistance reduce risk of latch-up or gate oxide damage in advanced-node SoCs. |
Use Scenario: Protecting LVDS or MIPI DSI panel power inputs from electrostatic discharge during assembly or field handling. IC Role / Device Role / Timing Role: Unidirectional clamp on panel VDD line, referenced to display ground plane to prevent voltage inversion on active matrix drivers. Use Value: 1.6 mm × 1.0 mm DFN-2L footprint fits tight bezel layouts; 14.3 V clamping ensures TFT driver ICs remain within absolute max rating during ESD events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ5.0A | DO-214AC package (4.5 mm × 2.7 mm), 400 W Ppp, 5.0 V VRWM, 9.2 V VCL @ 43.5 A. | Larger footprint, lower surge rating; suited for cost-sensitive industrial boards with less space constraint. | Select SMAJ5.0A only if board area > 12 mm² is available and peak surge current ≤43.5 A suffices. |
| SP1003-050 | SOD-323 package (1.7 mm × 1.25 mm), 350 W Ppp, 5.0 V VRWM, 14.5 V VCL @ 25 A, 350 pF CJ. | Lower capacitance but significantly reduced surge capability; better for high-speed data lines near 5 V rails. | Choose SP1003-050 when <400 pF capacitance is mandatory and surge threat is limited to ESD-only (not IEC 61000-4-5). |
Compared with SMAJ5.0A and SP1003-050, the AOZ8310DI-05 uniquely combines ultra-small DFN-2L size, 1500 W surge rating, and 675 pF capacitance-enabling robust 5 V rail protection in mobile and display applications where both space and energy handling are critical.
Availability
AOZ8310DI-05 is available at Aetrix Electronics and suitable for USB voltage bus protection, battery protection circuitry, and mobile device power rails requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for AOZ8310DI-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 in computing, consumer, and industrial markets.
The AOZ8310DI series was developed to deliver high-power, low-profile transient protection for modern 5 V–36 V power rails in space-constrained portable and automotive electronics.
FAQ
What is the clamping voltage of AOZ8310DI-05 at 85 A surge current?
The AOZ8310DI-05 clamps to a maximum of 16 V under IEC 61000-4-5 8/20 µs surge conditions at 85 A (positive polarity). At –85 A, clamping is –8 V. This ensures protected 5 V ICs remain within safe operating limits during worst-case transients, as confirmed in the Rev. 3.0 datasheet Table on Page 4.
Is AOZ8310DI-05 unidirectional or bidirectional?
AOZ8310DI-05 is a unidirectional TVS diode, with Anode and Cathode terminals configured for single-polarity surge suppression. It clamps positive transients to ground and allows negative excursions down to –8 V, making it appropriate for grounded 5 V rails-not floating or AC-coupled lines.
What is the junction capacitance of AOZ8310DI-05 and how does it affect USB 2.0 applications?
The AOZ8310DI-05 has a junction capacitance of 675 pF at 0 V and 1 MHz. In USB 2.0 VBUS protection, this value introduces negligible delay on power-up sequencing and does not interfere with 480 Mbps data signaling, as it appears only on the DC power line-not differential data pairs.
Does AOZ8310DI-05 meet IEC 61000-4-2 Level 4 ESD requirements?
Yes, AOZ8310DI-05 is rated for ±30 kV air and contact discharge per IEC 61000-4-2, exceeding Level 4 (±15 kV air / ±8 kV contact). This rating is verified per test condition CDischarge = 150 pF / RDischarge = 330 Ω and applies directly to the AOZ8310DI-05 variant, as stated on Page 1 and Table on Page 2 of the datasheet.
What is the thermal operating range of AOZ8310DI-05 and is it suitable for automotive cabin use?
AOZ8310DI-05 operates from –40°C to +125°C ambient temperature, matching AEC-Q200 Grade 3 requirements for passive components. Its DFN-2L package with exposed cathode pad supports effective heat dissipation, making it suitable for under-hood and cabin-mounted infotainment power rails where thermal cycling and humidity are concerns.
AOZ8310DI-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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 16V
- Current - Peak Pulse (10/1000µs):
- 85A (8/20µs)
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- USB
- Capacitance @ Frequency:
- 675pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-DFN (1.6x1)
AOZ8310DI-05 FAQ
1.How can I place an order for AOZ8310DI-05 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8310DI-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 AOZ8310DI-05 reliable?
The price and inventory of AOZ8310DI-05 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8310DI-05 is usually 5 days.
3.What payment methods are accepted for AOZ8310DI-05?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8310DI-05 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8310DI-05?
AOZ8310DI-05 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8310DI-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 AOZ8310DI-05?
For technical support, including AOZ8310DI-05 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8310DI-05 requirements.
6.How does Aetrix verify that AOZ8310DI-05 is sourced from the original manufacturer or authorized distributors?
All AOZ8310DI-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 AOZ8310DI-05 meets industry standards.
7.What is the process for return or replacement of AOZ8310DI-05?
All AOZ8310DI-05 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8310DI-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 AOZ8310DI-05 part is unused and in its original packaging.
Return procedure for AOZ8310DI-05:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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