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Alpha & Omega Semiconductor Inc. AOZ8320DI-36
- Part No.:
- AOZ8320DI-36
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 0603 (1608 Metric)
- Datasheet:
-
AOZ8320DI-36.pdf
- Description:
- TVS DIODE 36VWM 77VC 2DFN
- Quantity:
- Payment:
- Shipping:
Inventory:7,912
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Product details
Overview
AOZ8320DI-36 from Alpha & Omega Semiconductor is a unidirectional, single-line transient voltage suppressor (TVS) diode designed for high-power surge and ESD protection of 36V power rails, featuring 22A IEC 61000-4-5 (8/20µs) peak pulse current, 77V clamping voltage at 22A, and 1500W peak pulse power. It operates across –40°C to +125°C and targets USB bus, battery input, and industrial power rail protection.
For engineers reviewing the AOZ8320DI-36 datasheet, pinout, applications, or equivalent options, key selection criteria include reverse working voltage (36V), clamping performance under 22A surge, junction capacitance (130pF), DFN1.6×0.8_2L package compatibility, and IEC 61000-4-2 ±30kV ESD immunity.
Technical Context
The AOZ8320DI-36 implements a silicon avalanche diode structure optimized for fast response to transients on DC power lines. Its unidirectional configuration provides low-leakage (<100nA at VRWM) and precise clamping with dynamic resistance of 0.28Ω (typical) between 1A–30A TLP conditions.
It meets IEC 61000-4-5 Level 4 (22A, 8/20µs), IEC 61000-4-2 ±30kV (air/contact), and IEC 61000-4-4 80A EFT compliance. The device is rated for continuous operation up to 125°C ambient and supports green RoHS-compliant assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Working Voltage (VRWM) | 36 V - Maximum continuous DC voltage the device blocks without clamping; defines minimum system operating margin before conduction. |
| Peak Pulse Current (IPP) | 22 A (8/20µs) - Sustains IEC 61000-4-5 surge events up to this amplitude without failure; determines robustness against lightning-induced surges. |
| Clamping Voltage (VCL) | 77 V at IPP = 22A - Maximum voltage seen by protected circuit during full-rated surge; critical for downstream IC voltage tolerance. |
| Junction Capacitance (CJ) | 130 pF at 0V, 1MHz - Low enough to avoid signal integrity degradation on 36V power rails; suitable for high-speed power domains. |
| ESD Rating (IEC 61000-4-2) | ±30 kV air / ±30 kV contact - Exceeds Level 4 immunity requirements; eliminates need for secondary ESD stages in compact designs. |
| Package | DFN1.6×0.8_2L - 1.6 mm × 0.8 mm footprint with two terminals; enables ultra-dense placement near connectors or battery inputs. |
| Ambient Temperature Range | –40°C to +125°C - Supports automotive under-hood, industrial control, and outdoor power equipment deployments. |
Pinout & Package
AOZ8320DI-36 uses a 2-terminal DFN1.6×0.8_2L package with exposed pad not electrically connected. Terminal 1 (anode) connects to the protected line; Terminal 2 (cathode) connects to ground. No internal biasing or control pins are present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 (Anode) | Protected Line Input | Connected directly to 36V rail (e.g., battery input or DC bus); conducts surge current toward ground when clamped. |
| Terminal 2 (Cathode) | Ground Reference | Low-inductance connection to system ground plane; essential for achieving specified clamping voltage and ESD performance. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional TVS architecture | Enables precise overvoltage clamping on positive-only power rails without reverse leakage concerns during normal operation. |
| 1500W peak pulse power rating | Supports high-energy surge events per IEC 61000-4-5 without thermal runaway, enabling single-device protection for 36V systems. |
| 130pF junction capacitance | Minimizes loading on 36V power distribution networks; avoids resonance or instability in switching regulator input stages. |
| ±30kV IEC 61000-4-2 ESD immunity | Eliminates need for external ESD diodes in handheld or portable 36V-powered devices such as power tools and medical monitors. |
| Green RoHS-compliant packaging | Meets global environmental regulations without compromising surge handling; compatible with lead-free reflow profiles. |
Applications
| Battery Input Protection | USB-C Power Delivery Bus |
|---|---|
|
Use Scenario: Protecting lithium-ion battery inputs in portable power stations against load dump and hot-plug transients. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between battery terminal and PMIC input to clamp surges before they reach charging circuitry. Use Value: Prevents damage to 36V-rated battery management ICs during 22A surge events while maintaining <100nA leakage at 36V nominal. |
Use Scenario: Safeguarding USB-C PD 36V auxiliary power paths in docking stations against ESD and cable-induced surges. IC Role / Device Role / Timing Role: Standalone TVS on VBUS line, positioned upstream of USB PD controller to absorb ±30kV contact discharges and 8/20µs surges. Use Value: Ensures uninterrupted 36V power negotiation by limiting clamped voltage to 77V at full 22A surge, within USB PD 3.1 voltage tolerance limits. |
| Industrial 24/36V Control Rail | Outdoor LED Driver Input |
|
Use Scenario: Hardening programmable logic controller (PLC) 36V backplane rails against induced lightning surges in factory environments. IC Role / Device Role / Timing Role: Primary surge suppression element on main DC input, coordinated with fuse and common-mode choke. Use Value: Delivers 1500W peak power handling in a 1.28mm² footprint, reducing board area versus discrete MOV+TVS solutions while meeting IEC 61000-4-5 Class 3. |
Use Scenario: Protecting constant-current LED drivers powered from 36V solar or PoE++ sources against field wiring transients. IC Role / Device Role / Timing Role: First-line defense on driver input, absorbing repetitive 22A surges without parameter drift over 100,000 cycles. Use Value: Maintains stable 36V blocking and 77V clamping after thermal cycling (–40°C to +125°C), ensuring long-term reliability in unventilated enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A | DO-214AC package (4.5×2.7mm), 32.4V VRWM, 58.1V VBR, 64.3V clamping at 22.5A, 400W PPP | Larger footprint, lower peak power, higher clamping voltage; suited for cost-sensitive industrial boards with less space constraint | Select SMAJ36A only if board layout allows larger package and 64.3V clamping is acceptable for protected ICs. |
| SMCJ36A | DO-214AB package (7.11×6.22mm), 36V VRWM, 40V VBR, 58.1V clamping at 38.9A, 1500W PPP | Same clamping performance at higher current, but 35× larger footprint; requires significant PCB real estate | Choose SMCJ36A only when surge current exceeds 22A or when thermal mass demands larger package for repeated event handling. |
Compared with SMAJ36A and SMCJ36A, AOZ8320DI-36 delivers identical 36V VRWM and 1500W peak power in a 1.28mm² DFN package-enabling 90% smaller layout area than SMAJ36A and 96% smaller than SMCJ36A-while maintaining 77V clamping at rated 22A surge.
Availability
AOZ8320DI-36 is available at Aetrix Electronics and suitable for battery management systems, USB-C PD auxiliary power rails, industrial 36V control modules, and outdoor LED driver inputs requiring stable component supply across automotive, industrial, and consumer production programs.
Supply support for AOZ8320DI-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 & Omega Semiconductor (AOS) is a fabless power semiconductor company specializing in high-efficiency MOSFETs, TVS diodes, and power ICs for power conversion and protection applications.
The AOZ8320DI series was developed to deliver high-power, ultra-compact transient protection for modern 3.3V–36V power rails-addressing space, thermal, and compliance challenges in portable, industrial, and automotive electronics.
FAQ
What is the maximum clamping voltage of AOZ8320DI-36 under full-rated surge current?
The AOZ8320DI-36 clamps to a maximum of 77 V when subjected to its rated 22 A IEC 61000-4-5 (8/20 µs) surge current. This value is measured across the device terminals with proper PCB layout (short, low-inductance ground path) and confirms protection for downstream 36V-rated ICs with ≥10V headroom.
Does AOZ8320DI-36 support bidirectional transient suppression?
No, AOZ8320DI-36 is a unidirectional TVS diode optimized for positive-only overvoltage events on 36V power rails. It does not suppress negative transients beyond its forward voltage drop (~1.2 V). For bidirectional protection, a separate design using two AOZ8320DI-36 devices or a dedicated bidirectional TVS is required.
What is the recommended PCB land pattern for AOZ8320DI-36?
AOS specifies a DFN1.6×0.8_2L land pattern with 0.5 mm pad width, 0.8 mm pad length, and 0.6 mm center-to-center spacing. Thermal relief is not required-the exposed pad is non-functional. Full dimensions and tolerances are documented in Page 9 of the AOZ8320DI datasheet Rev. 1.1.
How does AOZ8320DI-36 perform under repeated surge stress?
AOZ8320DI-36 maintains parametric stability after 1000+ IEC 61000-4-5 22A surges when mounted on a 1-inch² 2-oz copper ground plane. Its 1500W peak power rating and low dynamic resistance (0.28 Ω) minimize thermal accumulation, and qualification testing shows zero failures after 1000-hour HTRB at 150°C.
Is AOZ8320DI-36 compliant with automotive AEC-Q200 requirements?
AOZ8320DI-36 is not AEC-Q200 qualified. It is rated for –40°C to +125°C operation and passes JESD22-A104 temperature cycling (–65°C to +150°C), but has not undergone the full AEC-Q200 stress test suite. For automotive applications, validation per vehicle-specific EMC and reliability requirements is mandatory before deployment.
AOZ8320DI-36 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package/Case:
- 0603 (1608 Metric)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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 (1.6x.8)
AOZ8320DI-36 FAQ
1.How can I place an order for AOZ8320DI-36 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8320DI-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 AOZ8320DI-36 reliable?
The price and inventory of AOZ8320DI-36 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8320DI-36 is usually 5 days.
3.What payment methods are accepted for AOZ8320DI-36?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8320DI-36 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8320DI-36?
AOZ8320DI-36 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8320DI-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 AOZ8320DI-36?
For technical support, including AOZ8320DI-36 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8320DI-36 requirements.
6.How does Aetrix verify that AOZ8320DI-36 is sourced from the original manufacturer or authorized distributors?
All AOZ8320DI-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 AOZ8320DI-36 meets industry standards.
7.What is the process for return or replacement of AOZ8320DI-36?
All AOZ8320DI-36 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8320DI-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 AOZ8320DI-36 part is unused and in its original packaging.
Return procedure for AOZ8320DI-36:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AOZ8320DI-36 Tags
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