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Alpha & Omega Semiconductor Inc. AOZ8310ADI-04
- Part No.:
- AOZ8310ADI-04
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 2-UDFN
- Datasheet:
-
AOZ8310ADI-04.pdf
- Description:
- TVS DIODE 4.7VWM 8.5VC 2DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,378
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Product details
Overview
AOZ8310ADI-04 from Alpha & Omega Semiconductor is a single-channel unidirectional TVS diode designed to protect battery power lines (VBAT) against high-energy surges and ESD events, with 4.7 V reverse working voltage, 190 A peak pulse current (8/20 µs), 1500 W peak pulse power, 600 pF junction capacitance, and operation from −40°C to +125°C.
For engineers reviewing the AOZ8310ADI-04 datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage at 190 A (8.5 V positive / −5.5 V negative), IEC 61000-4-2 ±30 kV contact/air ESD rating, and DFN1.6x1.0A-2L package compatibility for space-constrained mobile power-line protection.
Technical Context
The AOZ8310ADI-04 implements a silicon avalanche diode structure optimized for fast response to transient overvoltage events on low-voltage DC rails. Its unidirectional configuration provides asymmetric clamping-positive surge clamping at 8.5 V (IPP = 190 A) and negative clamping at −5.5 V-enabling robust protection of battery-connected circuits without reverse-bias conduction during normal operation.
It meets IEC 61000-4-5 (lightning surge, 8/20 µs waveform) and IEC 61000-4-2 (ESD) standards, with verified performance at ±30 kV air/contact discharge and 190 A surge current. The 600 pF capacitance is characterized at 0 V and 1 MHz, making it suitable for VBAT line protection where signal integrity is not compromised by excessive parasitic capacitance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Working Voltage (VRWM) | 4.7 V - Maximum continuous DC voltage applied without significant leakage; sets upper limit for protected rail (e.g., Li-ion battery nominal 3.7 V, max 4.2 V). |
| Peak Pulse Current (IPP) | 190 A (8/20 µs) - Withstands lightning-surge-level transients per IEC 61000-4-5 without failure. |
| Clamping Voltage (VCL) | 8.5 V (positive), −5.5 V (negative) at IPP = 190 A - Limits voltage seen by downstream ICs during worst-case surge. |
| Junction Capacitance (CJ) | 600 pF at 0 V, 1 MHz - Low enough to avoid signal distortion on battery rails; compatible with high-speed charging detection. |
| ESD Rating | ±30 kV contact/air per IEC 61000-4-2 - Exceeds Level 4 immunity requirements for handheld consumer electronics. |
| Operating Temperature | −40°C to +125°C TJ - Supports automotive-grade under-hood and mobile device battery compartment environments. |
Pinout & Package
AOZ8310ADI-04 is housed in a RoHS-compliant, halogen-free DFN1.6x1.0A-2L package (1.6 mm × 1.0 mm × 0.5 mm), optimized for automated placement and thermal dissipation in compact portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode | Connected to ground or low-side return path; enables unidirectional clamping of positive transients on VBAT line. |
| Pin 2 | Cathode | Connected to protected VBAT rail; conducts surge current to ground when voltage exceeds breakdown threshold. |
Key Features
| Feature | Design Value |
|---|---|
| IEC 61000-4-2 ESD immunity | ±30 kV contact/air discharge - Eliminates need for secondary ESD protection in mobile phone front-end power stages. |
| IEC 61000-4-5 surge rating | 190 A (8/20 µs) - Provides single-device compliance with industrial and automotive surge immunity standards. |
| Low clamping voltage asymmetry | 8.5 V (pos) / −5.5 V (neg) at 190 A - Minimizes stress on battery management ICs while blocking reverse conduction. |
| Compact DFN footprint | 1.6 mm × 1.0 mm - Enables placement directly at battery connector or PMIC input, reducing PCB trace inductance and improving protection efficacy. |
Applications
| Mobile Phone Power Protection | Notebook Computer VBAT Line |
|---|---|
Use Scenario: Protects main Li-ion battery input against ESD from user handling and surge from USB-C PD negotiation transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery connector and PMIC input to clamp overvoltage before reaching power management IC. Use Value: Prevents latch-up or permanent damage to PMICs such as AOZ5311 or similar, leveraging 4.7 V VRWM and 8.5 V clamping at full 190 A surge. | Use Scenario: Shields system-on-chip (SoC) power rail from hot-plug surges during battery swap or AC adapter insertion. IC Role / Device Role / Timing Role: Primary surge suppression device on VBAT net upstream of buck converters and fuel gauges. Use Value: Maintains system uptime by limiting transient voltage to ≤8.5 V during 190 A lightning-surge events, within SoC absolute maximum ratings. |
| Automotive Infotainment Panel | Industrial Handheld Terminal |
Use Scenario: Guards 12 V–5 V DC-DC input stage in infotainment head unit against load-dump-induced transients and ESD from touchscreen interface. IC Role / Device Role / Timing Role: Secondary protection device after primary TVS, deployed at point-of-load near display power IC. Use Value: Delivers −40°C to +125°C operation and ±30 kV ESD immunity required for automotive cabin environments per ISO 10605. | Use Scenario: Secures rechargeable battery input in ruggedized barcode scanners exposed to frequent electrostatic discharge in warehouse settings. IC Role / Device Role / Timing Role: Standalone ESD/surge suppressor on main battery feed, rated for repeated ±30 kV contact discharge events. Use Value: Extends field reliability with 600 pF capacitance that avoids interfering with battery voltage sensing accuracy or charging protocol communication. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ4.5A | DO-214AC package (4.2 mm × 2.6 mm); 4.5 V VRWM; 100 A IPP (8/20 µs); 600 W PPP | Larger footprint; lower surge rating; higher thermal mass but less suitable for ultra-compact mobile layouts | Select SMAJ4.5A only when board space allows larger SMC/SMA packages and surge requirement is ≤100 A. |
| TPD4E001DPYR | 4-channel, 0.5-pF per channel, 5.5-V VRWM; 4-A IPP; designed for high-speed data lines, not power rails | Not rated for VBAT-level surge; intended for USB/MIPI signal line ESD, not power-line protection | TPD4E001DPYR is unsuitable as direct replacement; use only for low-capacitance signal-line ESD, not power-rail TVS function. |
Compared with SMAJ4.5A and TPD4E001DPYR, the AOZ8310ADI-04 uniquely combines 190 A surge capability, 4.7 V VRWM, and 1.6×1.0 mm DFN packaging-making it the only option among the three qualified for high-density, high-power mobile battery protection without derating or layout compromise.
Availability
AOZ8310ADI-04 is available at Aetrix Electronics and suitable for mobile phone power protection, notebook computer VBAT line hardening, and industrial handheld terminal battery input surge suppression requiring stable component supply across production lifecycles.
Supply support for AOZ8310ADI-04 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 in computing, consumer, and industrial markets.
The AOZ8310ADI-04 belongs to AOS's high-surge TVS diode product line, engineered specifically for low-voltage battery rail protection in space-constrained, high-reliability portable electronics.
FAQ
What is the clamping voltage of AOZ8310ADI-04 at full-rated surge current?
The AOZ8310ADI-04 clamps to 8.5 V (positive polarity) and −5.5 V (negative polarity) when subjected to its full-rated 190 A peak pulse current (8/20 µs waveform), as specified in the Electrical Characteristics table. This ensures downstream components on the VBAT rail remain within safe operating voltage limits during worst-case surge events. The AOZ8310ADI-04 achieves this with minimal voltage overshoot due to its optimized silicon avalanche structure.
Is AOZ8310ADI-04 suitable for protecting a 5 V USB power rail?
No - AOZ8310ADI-04 has a 4.7 V reverse working voltage (VRWM), making it unsuitable for continuous 5 V operation due to excessive leakage current above VRWM. It is designed for Li-ion battery inputs (nominal 3.7 V, max ~4.2 V) or other sub-4.7 V rails. For 5 V USB protection, a TVS with ≥5.5 V VRWM (e.g., AOZ8210ADI-05) should be selected. The AOZ8310ADI-04 must not be used where steady-state voltage exceeds 4.7 V.
Does AOZ8310ADI-04 meet automotive qualification standards?
The AOZ8310ADI-04 is rated for −40°C to +125°C junction temperature and meets IEC 61000-4-2 and IEC 61000-4-5, but it is not AEC-Q200 qualified. It may be used in non-safety-critical automotive infotainment or body electronics where customer-specific validation is performed, but it is not approved for engine control, ADAS, or safety-related systems. Always verify AOZ8310ADI-04 suitability against your vehicle platform's EMC and reliability requirements.
What is the thermal resistance (RθJA) of AOZ8310ADI-04 in standard PCB layout?
The AOZ8310ADI-04 datasheet does not specify RθJA; however, typical DFN1.6x1.0A-2L devices with copper pad exposure achieve ~220°C/W on 1-in² 1-oz copper with 2 thermal vias. For reliable 1500 W pulse handling, ensure ≥10 mm² exposed copper pad connected to ground plane via ≥4 thermal vias (0.3 mm diameter). Thermal performance of AOZ8310ADI-04 is highly layout-dependent - refer to AOS Application Note AN-1003 for recommended land patterns.
Can AOZ8310ADI-04 replace bidirectional TVS diodes in ESD protection circuits?
No - AOZ8310ADI-04 is unidirectional and only clamps positive transients on the cathode side (Pin 2) relative to anode (Pin 1). It cannot suppress negative-going surges on a floating or AC-coupled line. For bidirectional protection (e.g., USB D+/D−), a symmetric TVS like AOZ8200ADI-03 is required. Using AOZ8310ADI-04 in place of a bidirectional device leaves the circuit vulnerable to negative transients. Always match AOZ8310ADI-04 polarity to the protected rail's grounding scheme.
AOZ8310ADI-04 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):
- 4.7V (Max)
- Voltage - Breakdown (Min):
- 4.8V
- Voltage - Clamping (Max) @ Ipp:
- 8.5V
- Current - Peak Pulse (10/1000µs):
- 190A (8/20µs)
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 600pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-DFN (1.6x1)
AOZ8310ADI-04 FAQ
1.How can I place an order for AOZ8310ADI-04 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8310ADI-04 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 AOZ8310ADI-04 reliable?
The price and inventory of AOZ8310ADI-04 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8310ADI-04 is usually 5 days.
3.What payment methods are accepted for AOZ8310ADI-04?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8310ADI-04 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8310ADI-04?
AOZ8310ADI-04 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8310ADI-04 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 AOZ8310ADI-04?
For technical support, including AOZ8310ADI-04 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8310ADI-04 requirements.
6.How does Aetrix verify that AOZ8310ADI-04 is sourced from the original manufacturer or authorized distributors?
All AOZ8310ADI-04 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 AOZ8310ADI-04 meets industry standards.
7.What is the process for return or replacement of AOZ8310ADI-04?
All AOZ8310ADI-04 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8310ADI-04, 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 AOZ8310ADI-04 part is unused and in its original packaging.
Return procedure for AOZ8310ADI-04:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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