My Inquiry
My Account
Alpha & Omega Semiconductor Inc. AOZ8320DI-02
- Part No.:
- AOZ8320DI-02
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 0603 (1608 Metric)
- Datasheet:
-
AOZ8320DI-02.pdf
- Description:
- TVS DIODE 2.5VWM 15VC 2DFN
- Quantity:
- Payment:
- Shipping:
Inventory:6,663
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AOZ8320DI-02 from Alpha and Omega Semiconductor is a unidirectional high-power TVS diode in a 1.6mm × 0.8mm DFN-2L package, designed for surge and ESD protection of 2.5V power rails. It delivers 75A peak pulse current (8/20µs), clamps to ≤15V at 75A, and supports ±30kV IEC 61000-4-2 ESD immunity - used in USB voltage bus and mobile device battery protection circuits.
For engineers reviewing the AOZ8320DI-02 datasheet, pinout, applications, or equivalent options, this page provides verified electrical specs, clamping behavior under IEC 61000-4-5 surge, junction capacitance (100pF), dynamic resistance (0.05–0.1Ω), and thermal rating (-40°C to +125°C) for robust power-rail transient suppression design.
Technical Context
The AOZ8320DI-02 implements a single unidirectional avalanche junction optimized for low-clamping-voltage response to fast transients. Its 2.5V reverse working voltage (VRWM) and 2.8–3.3V breakdown (VBR at 1mA) enable precise protection of low-voltage logic-supply rails without leakage-induced power loss.
It meets IEC 61000-4-2 Level 4 (±30kV air/contact), IEC 61000-4-4 EFT (80A), and IEC 61000-4-5 surge (75A, 8/20µs) with 1100W peak pulse power. Clamping voltage remains ≤7.5V at ±30A TLP and ≤15V at ±75A 8/20µs surge - critical for safeguarding sensitive 2.5V I/O interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Working Voltage (VRWM) | 2.5V - sets maximum continuous DC rail voltage before leakage rises significantly; matches 2.5V logic supply domains. |
| Breakdown Voltage (VBR) | 2.8V (min) to 3.3V (typ) at 1mA - ensures reliable turn-on just above normal operating voltage to avoid false triggering. |
| Peak Pulse Current (IPP) | 75A (8/20µs) - withstands high-energy surges per IEC 61000-4-5 without failure; enables robust front-end protection. |
| Clamping Voltage (VCL) | ≤15V at ±75A (8/20µs) - limits voltage seen by downstream ICs during worst-case surge, preserving 2.5V system integrity. |
| Junction Capacitance (CJ) | 100pF at 0V, 1MHz - low enough to avoid signal integrity degradation on high-speed 2.5V buses like USB D+/D−. |
| Dynamic Resistance (RDNY) | 0.05–0.1Ω - ensures rapid voltage stabilization during transient events, minimizing overshoot and energy dissipation time. |
| ESD Rating | ±30kV contact & air (IEC 61000-4-2) - exceeds Level 4 requirements, eliminating need for secondary ESD stages in portable designs. |
Pinout & Package
AOZ8320DI-02 uses a 2-terminal DFN-2L package (1.6mm × 0.8mm, 0.4mm pitch), with terminals labeled Pin 1 (Anode) and Pin 2 (Cathode). The ultra-compact footprint supports high-density PCB layouts in space-constrained mobile and wearables applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode) | Input/Line side connection | Connected to protected power rail (e.g., VBUS in USB); conducts surge current toward ground when clamped. |
| Pin 2 (Cathode) | Ground reference terminal | Directly tied to system ground plane; establishes low-inductance return path essential for effective transient suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional TVS architecture | Enables precise overvoltage clamping only on positive transients - ideal for DC power rails where reverse polarity is not expected. |
| 1100W peak pulse power (8/20µs) | Handles high-energy lightning-induced surges without thermal runaway, supporting industrial-grade reliability in consumer power inputs. |
| 100pF junction capacitance | Minimizes loading on 2.5V high-speed lines (e.g., USB 2.0, PMIC outputs), avoiding signal rise-time degradation or jitter. |
| RoHS-compliant & halogen-free | Fulfills environmental compliance for global electronics markets including EU, China, and Japan without sacrificing surge performance. |
| -40°C to +125°C operating range | Supports deployment in automotive cabin modules, industrial battery packs, and outdoor IoT edge nodes with wide ambient swings. |
Applications
| USB Voltage Bus Protection | Battery Protection Circuit |
|---|---|
|
Use Scenario: Protecting 2.5V VBUS line in USB OTG or charging ports against ESD and hot-plug surges. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between VBUS and GND to shunt transients before reaching USB controller or PMIC. Use Value: Prevents latch-up or gate oxide damage in 2.5V USB PHYs while maintaining <100pF loading for full-speed signaling compliance. |
Use Scenario: Safeguarding lithium-ion battery monitor ICs and fuel gauges connected to 2.5V sense rails. IC Role / Device Role / Timing Role: Front-end transient suppressor on battery voltage feedback path to prevent erroneous SOC reporting during load dump events. Use Value: Ensures accurate voltage measurement under ±30kV ESD strikes and maintains system-level safety certification without additional filtering. |
| Mobile Device Power Management | Industrial Sensor Node Power Rail |
|
Use Scenario: Protecting 2.5V core supply of application processors or PMICs in smartphones and tablets. IC Role / Device Role / Timing Role: Primary surge suppression element on main SoC VDD_IO rail, placed adjacent to power entry point. Use Value: Limits clamped voltage to ≤15V during 75A surges, preventing brownout or reset conditions in 2.5V logic domains. |
Use Scenario: Securing 2.5V auxiliary supply in remote sensor nodes exposed to EFT noise from nearby motor drives. IC Role / Device Role / Timing Role: EFT-hardened TVS on isolated 2.5V rail feeding ADC reference or low-power MCU core. Use Value: Withstands 80A EFT bursts (5/50ns) without degradation, ensuring uninterrupted data acquisition in harsh industrial environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ2.5A | DO-214AC package (4.5mm × 2.7mm); 500W PPP; 200pF CJ; VRWM = 2.5V; IPP = 39.3A (8/20µs) | Larger footprint and higher capacitance limit use in high-speed 2.5V interfaces; lower surge rating reduces margin in demanding EFT environments. | Select SMAJ2.5A only if board space allows larger package and 500W surge capability suffices for legacy industrial designs. |
| TPD2E001DRYR | 2-channel, 0.5pF per line, 5V VRWM, SOT-553; rated for ±8kV IEC 61000-4-2 - not suitable for 2.5V rails or surge. | Designed for high-speed data-line ESD only; lacks surge rating, unidirectional rail protection, and 2.5V VRWM matching. | TPD2E001DRYR is not functionally comparable - avoid for power-rail protection; use only for low-capacitance data-line ESD. |
Compared with SMAJ2.5A and TPD2E001DRYR, AOZ8320DI-02 uniquely combines 2.5V VRWM, 75A surge handling, 100pF capacitance, and DFN-2L size - making it the only validated option for compact, high-reliability 2.5V power-rail protection in modern mobile and IoT systems.
Availability
AOZ8320DI-02 is available at Aetrix Electronics and suitable for USB voltage bus protection, battery management systems, and mobile device power management requiring stable component supply across high-volume production cycles.
Supply support for AOZ8320DI-02 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.
The AOZ8320DI series was developed to deliver high-surge-capability, low-capacitance TVS protection in ultra-small packages for next-generation portable and battery-powered electronics.
FAQ
What is the maximum clamping voltage of AOZ8320DI-02 under IEC 61000-4-5 8/20µs surge?
The AOZ8320DI-02 clamps to ≤15V at ±75A (8/20µs), as specified in its Electrical Characteristics table. This value is measured with I/O pin-to-ground configuration and ensures downstream 2.5V ICs remain within safe operating voltage margins during worst-case surge events. The clamping voltage is confirmed via standardized transmission line pulse (TLP) and surge waveform testing per IEC standards.
Does AOZ8320DI-02 support bidirectional transient suppression?
No, AOZ8320DI-02 is a unidirectional TVS diode optimized for positive-only overvoltage events on DC power rails. Its anode-to-cathode configuration provides low-leakage protection for 2.5V supplies but does not suppress negative transients - unlike bidirectional devices such as P6SMB2.5A. For applications requiring symmetrical protection, a separate negative-rail solution or dual-diode arrangement is required.
What is the junction capacitance of AOZ8320DI-02 and why does it matter?
The AOZ8320DI-02 has a junction capacitance of 100pF at 0V and 1MHz. This low value prevents signal distortion and timing skew on high-speed 2.5V interfaces like USB 2.0 D+ and D− lines or PMIC control buses. Higher capacitance would degrade rise/fall times and increase insertion loss - making AOZ8320DI-02 suitable for bandwidth-sensitive power-rail protection where signal integrity must be preserved.
Can AOZ8320DI-02 replace AOZ8320DI-05 in a 5V circuit?
No - AOZ8320DI-02 is rated for 2.5V VRWM and will conduct prematurely on a 5V rail, causing excessive leakage and potential thermal failure. AOZ8320DI-05 (5V VRWM) is the correct variant for 5V applications. Substituting AOZ8320DI-02 risks continuous conduction, elevated power dissipation, and unreliable protection. Always match VRWM to the nominal rail voltage.
Is AOZ8320DI-02 compliant with RoHS and halogen-free standards?
Yes, AOZ8320DI-02 is RoHS compliant and classified as an AOS Green Product with reduced halogen content. This compliance is documented in the ordering information section of the datasheet and verified through material declarations per IEC 61249-2-21. It meets environmental requirements for CE marking, China RoHS, and JEDEC J-STD-609A Class 1.
AOZ8320DI-02 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):
- 2.5V (Max)
- Voltage - Breakdown (Min):
- 2.8V
- Voltage - Clamping (Max) @ Ipp:
- 15V
- Current - Peak Pulse (10/1000µs):
- 75A (8/20µs)
- Power - Peak Pulse:
- 1100W (1.1kW)
- Power Line Protection:
- No
- Applications:
- USB
- Capacitance @ Frequency:
- 100pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-DFN (1.6x.8)
AOZ8320DI-02 FAQ
1.How can I place an order for AOZ8320DI-02 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8320DI-02 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-02 reliable?
The price and inventory of AOZ8320DI-02 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8320DI-02 is usually 5 days.
3.What payment methods are accepted for AOZ8320DI-02?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8320DI-02 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8320DI-02?
AOZ8320DI-02 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8320DI-02 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-02?
For technical support, including AOZ8320DI-02 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8320DI-02 requirements.
6.How does Aetrix verify that AOZ8320DI-02 is sourced from the original manufacturer or authorized distributors?
All AOZ8320DI-02 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-02 meets industry standards.
7.What is the process for return or replacement of AOZ8320DI-02?
All AOZ8320DI-02 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8320DI-02, 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-02 part is unused and in its original packaging.
Return procedure for AOZ8320DI-02:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AOZ8320DI-02 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
