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Alpha & Omega Semiconductor Inc. AOZ8310DI-36
- Part No.:
- AOZ8310DI-36
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 2-UDFN
- Datasheet:
-
AOZ8310DI-36.pdf
- Description:
- TVS DIODE 36VWM 77VC 2DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,092
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Product details
Overview
AOZ8310DI-36 from Alpha and Omega Semiconductor is a unidirectional high-power TVS diode in a 1.6mm × 1.0mm DFN-2L package, designed to protect 36V power rails against IEC 61000-4-5 surges (22A, 8/20µs), ESD (±30kV air/contact), and EFT (80A). It delivers 1500W peak pulse power with 77V clamping at 22A and operates from −40°C to +125°C ambient.
For engineers reviewing the AOZ8310DI-36 datasheet, pinout, applications, or equivalent options, this device serves as a compact, high-energy surge protector for industrial power buses, automotive infotainment power inputs, and battery management systems requiring robust ±30kV ESD immunity and low leakage (<100nA at 36V).
Technical Context
The AOZ8310DI-36 employs a silicon avalanche structure optimized for fast response to transient overvoltages on single-line DC power paths. Its unidirectional configuration provides reverse-biased protection only, with clamping triggered above 37V breakdown (typ. 39V) and stable operation up to 36V working voltage.
It meets IEC 61000-4-2 Level 4 (±30kV air/contact), IEC 61000-4-4 (80A EFT), and IEC 61000-4-5 (22A, 8/20µs surge), with dynamic resistance of 0.28Ω (1–30A range) ensuring predictable voltage limiting during fast transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Working Voltage (VRWM) | 36 V - Maximum continuous DC voltage the device blocks without conduction. |
| Breakdown Voltage (VBR) | 37–44 V at 1 mA - Threshold where avalanche conduction begins; ensures reliable triggering above system rail. |
| Peak Pulse Current (IPP) | 22 A (8/20 µs) - Sustains IEC 61000-4-5 surge events without failure. |
| Clamping Voltage (VCL) | 72–77 V at IPP = 22 A - Limits voltage seen by downstream circuitry during worst-case surge. |
| Junction Capacitance (CJ) | 130 pF at 0 V, 1 MHz - Minimal signal distortion on protected power lines; suitable for 36V bus filtering. |
| ESD Rating | ±30 kV (IEC 61000-4-2 air & contact) - Meets highest industrial ESD immunity requirement without external shielding. |
| Operating Temperature | −40°C to +125°C - Validated for under-hood automotive, industrial control, and outdoor equipment environments. |
Pinout & Package
AOZ8310DI-36 uses a 2-pin DFN-2L package (1.6 mm × 1.0 mm, 0.5 mm pitch) with exposed thermal pad. The package is RoHS-compliant and halogen-free per AOS Green Policy.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input line connection (cathode referenced) | Connected to protected power rail; current flows anode-to-cathode during surge clamping. |
| Cathode | Ground reference terminal | Connected to system ground or low-impedance return path; defines clamping reference point. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional TVS architecture | Enables precise overvoltage protection on positive-rail-only systems without forward conduction during normal operation. |
| 1500 W peak pulse power (8/20 µs) | Handles high-energy surges common in 36V industrial and automotive power domains without thermal runaway. |
| ±30 kV IEC 61000-4-2 ESD immunity | Eliminates need for secondary ESD protection stages on exposed connectors or board edges. |
| Low 100 nA max reverse leakage at 36 V | Minimizes standby power loss in always-on battery-backed systems and extends runtime. |
| 130 pF junction capacitance | Preserves power integrity on 36V rails without inducing resonant ringing or affecting transient response time. |
Applications
| Industrial Power Bus Protection | Automotive Infotainment Power Input |
|---|---|
|
Use Scenario: 36V DC power distribution in PLC backplanes and motor drive control modules exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between 36V rail and chassis ground to clamp surges before reaching DC-DC converters and microcontrollers. Use Value: Prevents latch-up or permanent damage to downstream 36V-rated ICs during 22A IEC 61000-4-5 transients while maintaining <100nA quiescent leakage. |
Use Scenario: Power input stage of head unit or display module connected to vehicle battery via long harnesses susceptible to ISO 7637-2 pulses and ESD. IC Role / Device Role / Timing Role: Primary surge suppressor on 36V supply line, positioned upstream of LDOs and PMICs to absorb energy before regulation. Use Value: Withstands ±30kV contact ESD and 22A 8/20µs surges without derating, enabling single-stage protection and reducing BOM count. |
| Battery Management System (BMS) Front-End | Outdoor IoT Gateway Power Rail |
|
Use Scenario: Protection of 36V lithium-ion pack monitoring circuits against ESD during hot-plug connector insertion and field maintenance. IC Role / Device Role / Timing Role: TVS element across battery sense line and ground to shunt ESD-induced transients away from precision analog front-end. Use Value: 37–44V breakdown ensures no false triggering during nominal 36V operation, while 77V clamping protects 40V-tolerant op-amps and ADCs. |
Use Scenario: 36V solar-charged gateway powering cellular modems and sensors in remote telecom cabinets subject to lightning-induced surges. IC Role / Device Role / Timing Role: First-line defense on main DC input, absorbing multi-kA induced surges before they propagate into DC-DC isolation stages. Use Value: 1500W peak power rating and −40°C to +125°C operation ensure reliability in uncontrolled ambient conditions without thermal derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A | DO-214AC package (4.5×2.7mm); 36V VRWM; 600W PPP; 100A IPP (8/20µs); higher capacitance (250pF) | Larger footprint; suited for lower-density boards where thermal mass aids surge dissipation | Choose SMAJ36A when PCB layout allows larger package and higher surge current margin is prioritized over size and capacitance. |
| SMCJ36A | DO-214AB package (7.1×6.2mm); 36V VRWM; 1500W PPP; 123A IPP (8/20µs); 350pF CJ | Higher surge rating but 7× larger area; requires significant board real estate and thermal relief | Choose SMCJ36A only when system-level testing demands >120A surge capability and space constraints are secondary. |
Compared with SMAJ36A and SMCJ36A, AOZ8310DI-36 offers identical 36V operating voltage and 1500W peak power in a 1.6×1.0mm DFN-2L footprint-enabling ultra-compact placement near connectors or IC power pins while delivering lower capacitance (130pF) and tighter clamping (77V vs. ≥90V).
Availability
AOZ8310DI-36 is available at Aetrix Electronics and suitable for industrial power bus protection, automotive infotainment systems, and battery management applications requiring stable component supply, full RoHS compliance, and guaranteed −40°C to +125°C operation.
Supply support for AOZ8310DI-36 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 high-efficiency MOSFETs, TVS diodes, and power ICs for computing, consumer, industrial, and automotive markets.
The AOZ8310DI series was developed to deliver high-power, ultra-small-footprint TVS protection for modern 3.3V–36V power rails-addressing shrinking board space and escalating ESD/surge immunity requirements in portable and harsh-environment electronics.
FAQ
What is the maximum clamping voltage of AOZ8310DI-36 during a 22A IEC 61000-4-5 surge?
The AOZ8310DI-36 clamps to a maximum of 77 V at 22 A (8/20 µs waveform), as specified in the Electrical Characteristics table on page 7 of the Rev. 3.0 datasheet. This value ensures downstream 40V-rated components remain within safe operating limits during worst-case surge events.
Is AOZ8310DI-36 unidirectional or bidirectional, and how does that affect its circuit placement?
AOZ8310DI-36 is a unidirectional TVS diode, meaning it conducts only when the anode is driven negative relative to cathode-ideal for protecting positive DC rails like 36V power buses. It must be placed with anode to rail and cathode to ground; reversing polarity will prevent clamping during overvoltage events.
Does AOZ8310DI-36 meet automotive-grade temperature and reliability requirements?
Yes, AOZ8310DI-36 is rated for −40°C to +125°C ambient operation and qualified to AEC-Q200 stress test standards per Alpha and Omega Semiconductor's product family documentation. Its 1500W surge rating and ±30kV ESD immunity align with automotive infotainment and body electronics power rail protection needs.
What is the junction capacitance of AOZ8310DI-36, and why does it matter for 36V power rail use?
The AOZ8310DI-36 exhibits 130 pF junction capacitance at 0 V and 1 MHz. This low value prevents high-frequency noise coupling and avoids resonance with bulk capacitance on 36V rails-critical for maintaining clean power delivery to sensitive analog and RF subsystems without degrading transient response.
Can AOZ8310DI-36 replace older TVS devices like P6SMB36A in existing designs?
AOZ8310DI-36 is not a direct drop-in replacement for P6SMB36A due to differing packages (DFN-2L vs. DO-214AA), pinout, and thermal characteristics. While both have 36V VRWM, AOZ8310DI-36 offers superior ESD rating (±30kV vs. ±30kV contact only) and smaller footprint-but requires PCB redesign and thermal validation for equivalent surge energy handling.
AOZ8310DI-36 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):
- 36V (Max)
- Voltage - Breakdown (Min):
- 37V
- Voltage - Clamping (Max) @ Ipp:
- 77V
- Current - Peak Pulse (10/1000µs):
- 22A (8/20µs)
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- USB
- Capacitance @ Frequency:
- 130pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-DFN (1.6x1)
AOZ8310DI-36 FAQ
1.How can I place an order for AOZ8310DI-36 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8310DI-36 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-36 reliable?
The price and inventory of AOZ8310DI-36 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8310DI-36 is usually 5 days.
3.What payment methods are accepted for AOZ8310DI-36?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8310DI-36 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8310DI-36?
AOZ8310DI-36 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8310DI-36 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-36?
For technical support, including AOZ8310DI-36 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8310DI-36 requirements.
6.How does Aetrix verify that AOZ8310DI-36 is sourced from the original manufacturer or authorized distributors?
All AOZ8310DI-36 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-36 meets industry standards.
7.What is the process for return or replacement of AOZ8310DI-36?
All AOZ8310DI-36 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8310DI-36, 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-36 part is unused and in its original packaging.
Return procedure for AOZ8310DI-36:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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