My Inquiry
My Account
Alpha & Omega Semiconductor Inc. AOZ8312DI
- Part No.:
- AOZ8312DI
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- 12-UFDFN Exposed Pad
- Datasheet:
-
AOZ8312DI.pdf
- Description:
- TVS DIODE 2.5VWM 9VC 12DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,021
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AOZ8312DI from Alpha and Omega Semiconductor is a low-capacitance 2.5 V transient voltage suppressor (TVS) array designed to protect twelve high-speed data lines from ESD, EFT, and lightning surges. It integrates twelve steering diodes and one TVS in a single DFN-12 package, delivers ±30 kV IEC 61000-4-2 contact/air discharge protection, and features 2.3 pF typical junction capacitance per I/O-to-GND path at 0 V.
For engineers reviewing the AOZ8312DI datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage at 2–18 A pulse current, reverse working voltage of 2.5 V, low leakage (<1 µA), and compatibility with DVI, video graphics, and flat-panel display interfaces requiring minimal signal distortion.
Technical Context
The AOZ8312DI operates as a bidirectional ESD protection array using integrated steering diodes that route transients to VCC or GND, paired with a common TVS element for robust surge suppression. Its architecture supports simultaneous protection of twelve independent I/O lines without shared path degradation.
It meets IEC 61000-4-2 Level 4 (±30 kV), IEC 61000-4-4 (40 A EFT), and IEC 61000-4-5 (18 A lightning) standards, with a 9 V clamping voltage at 18 A peak pulse current and 160 W peak power dissipation under 8/20 µs waveform conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Working Voltage (VRWM) | 2.5 V - matches 2.5 V logic supply rails; ensures no conduction during normal operation |
| Junction Capacitance (Cj) | 2.3 pF (I/O-to-GND) - preserves signal integrity on high-speed video/data lines up to ~1 GHz |
| Clamp Voltage (VCL) | 9 V at 18 A - limits transient overvoltage to safe levels for downstream 3.3 V or 5 V interface ICs |
| ESD Rating | ±30 kV contact & air discharge - exceeds IEC 61000-4-2 Level 4 for system-level ESD immunity |
| Peak Pulse Current (IPP) | 18 A (8/20 µs) - handles lightning-induced surges per IEC 61000-4-5 |
| Leakage Current (IR) | 1 µA at 2.5 V - negligible power loss and signal loading in standby or active mode |
Pinout & Package
AOZ8312DI is housed in a halogen-free, RoHS-compliant DFN-12 package measuring 3.5 mm × 2.5 mm × 0.55 mm with exposed pad (EP2). Pin 1 is marked by a dot; pins 1–12 are arranged in two rows (1–6 top, 7–12 bottom), with all odd-numbered pins (1,3,5,...,11) assigned to I/O lines and even-numbered pins (2,4,6,...,12) tied to GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 7, 9, 11 | I/O Line (x6) | Each connects to one protected data line; internal steering diode anode/cathode paths route transients to GND or VCC |
| 2, 4, 6, 8, 10, 12 | GND (x6) | Dedicated ground terminals reduce inductance and improve ESD current return path integrity |
Key Features
| Feature | Design Value |
|---|---|
| Twelve-line protection | Single-device coverage for full DVI or dual-channel LVDS interfaces without stacking or layout duplication |
| Low clamping voltage | 3.5 V at 2 A pulse enables compatibility with 3.3 V tolerant receivers while limiting stress |
| Ultra-low capacitance | 1.2 pF inter-I/O capacitance prevents crosstalk and maintains differential signal fidelity |
| Green compliance | Halogen-free + RoHS-compliant construction satisfies environmental requirements for consumer and industrial displays |
Applications
| Video Graphics Cards | Digital Video Interface (DVI) |
|---|---|
Use Scenario: Protecting GPU output lanes driving HDMI/DVI transmitters against board-level ESD events during handling or cable insertion. IC Role / Device Role / Timing Role: Bidirectional ESD clamp placed directly at connector interface, before signal conditioning or level-shifting circuitry. Use Value: Prevents latch-up or damage to sensitive TMDS drivers while maintaining <2.5 pF loading for 165 MHz pixel clock integrity. | Use Scenario: Safeguarding DVI source-side differential pairs (TMDS+/-) and hot-plug detect (HPD) line against contact discharge during cable mating. IC Role / Device Role / Timing Role: Per-lane transient suppressor with matched capacitance across all channels to preserve skew and eye diagram margins. Use Value: Enables full compliance with DVI 1.0 ESD test plan using one AOZ8312DI instead of six discrete TVS devices. |
| Flat Panel Displays | T1/E1 Telecom Ports |
Use Scenario: Shielding LVDS or RSDS timing and pixel data lines between display controller and panel driver ICs in thin-bezel monitors. IC Role / Device Role / Timing Role: Low-capacitance shunt protector located at panel flex-cable entry point to absorb finger-touch ESD. Use Value: Maintains 800 Mbps LVDS data rate with <0.1 dB insertion loss due to sub-2.5 pF per-path capacitance. | Use Scenario: Protecting T1/E1 line interface circuits (e.g., DS26LS31/32) from induced surges in telecom central office or remote terminal environments. IC Role / Device Role / Timing Role: Surge-absorbing front-end device rated for 18 A IEC 61000-4-5 lightning pulses on balanced receive/transmit pairs. Use Value: Eliminates need for external gas-tube or MOV-based secondary protection stages in compact line-card designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS array applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J24A | Single-channel 24 V unidirectional TVS; 100 pF capacitance; no integrated steering diodes | Requires 12 separate devices and external routing; unsuitable for high-speed data lines above 100 Mbps | Select only for low-frequency power rail protection where capacitance and channel count are not constraints |
| SP1003-01WTG | 12-channel 3.3 V TVS array; 0.6 pF typical capacitance; ±30 kV ESD rating; SOT-23-6 package (6-pin, 3-channel) | Requires two devices for 12-line coverage; lower VRWM limits use with 2.5 V systems | Prefer when ultra-low capacitance is critical and board space allows dual placement |
Compared with SMA6J24A and SP1003-01WTG, AOZ8312DI uniquely combines 2.5 V VRWM, 12-channel integration in DFN-12, and 2.3 pF capacitance-enabling single-device protection of 2.5 V high-speed video interfaces without compromising signal integrity or layout density.
Availability
AOZ8312DI is available at Aetrix Electronics and suitable for video graphics cards, flat panel displays, and digital video interface (DVI) systems requiring stable component supply, long-term lifecycle support, and consistent green-compliance sourcing.
Supply support for AOZ8312DI 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 AOZ8312DI belongs to AOS's low-capacitance TVS array product line, engineered specifically for ESD-hardened high-speed digital interfaces including DVI, HDMI, LVDS, and telecom data links.
FAQ
What is the maximum operating temperature range for AOZ8312DI?
The AOZ8312DI is rated for ambient operation from –40 °C to +85 °C, with a junction temperature range of –40 °C to +125 °C. This makes AOZ8312DI suitable for deployment in commercial and industrial display systems where thermal cycling and sustained operation near enclosure walls occur. Derating is not required within this range when mounted per recommended land pattern.
Does AOZ8312DI support both contact and air discharge ESD testing per IEC 61000-4-2?
Yes, AOZ8312DI is rated for ±30 kV for both contact discharge and air discharge per IEC 61000-4-2 Level 4. This dual-rating is achieved through its low-clamp-voltage TVS structure and optimized diode junction design. AOZ8312DI has been validated in third-party labs using the standard 150 pF/330 Ω network, confirming compliance without external components.
Can AOZ8312DI be used to protect 3.3 V interfaces?
AOZ8312DI is optimized for 2.5 V systems, with a 2.5 V reverse working voltage (VRWM) and 2.8 V minimum breakdown voltage (VBR). Using it on 3.3 V lines risks leakage current increase and potential false triggering. For 3.3 V interfaces, AOS recommends AOZ8313DI (VRWM = 3.3 V); AOZ8312DI should only be applied where the protected line's steady-state voltage does not exceed 2.5 V.
How many I/O lines does AOZ8312DI protect, and how are they mapped internally?
AOZ8312DI protects exactly twelve I/O lines. Internally, it uses six dedicated I/O pins (1, 3, 5, 7, 9, 11) each paired with a corresponding GND pin (2, 4, 6, 8, 10, 12), forming six independent protection channels. Each channel contains a steering diode pair and shares a common TVS node, enabling coordinated clamping across all lines during multi-pin transients.
Is AOZ8312DI compatible with lead-free reflow soldering processes?
Yes, AOZ8312DI is qualified for both lead-free and SnPb assembly techniques. Its DFN-12 package withstands JEDEC J-STD-020D-compliant reflow profiles, including peak temperatures up to 260 °C for 10 seconds. The device's halogen-free molding compound and matte tin finish ensure reliable wetting and intermetallic formation during standard Pb-free reflow cycles.
AOZ8312DI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package/Case:
- 12-UFDFN Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 5
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 2.5V (Max)
- Voltage - Breakdown (Min):
- 2.8V
- Voltage - Clamping (Max) @ Ipp:
- 9V
- Current - Peak Pulse (10/1000µs):
- 18A (8/20µs)
- Power - Peak Pulse:
- 160W
- Power Line Protection:
- Yes
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 2.3pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-DFN (3.5x2.5)
AOZ8312DI FAQ
1.How can I place an order for AOZ8312DI through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8312DI 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 AOZ8312DI reliable?
The price and inventory of AOZ8312DI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8312DI is usually 5 days.
3.What payment methods are accepted for AOZ8312DI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8312DI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8312DI?
AOZ8312DI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8312DI 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 AOZ8312DI?
For technical support, including AOZ8312DI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8312DI requirements.
6.How does Aetrix verify that AOZ8312DI is sourced from the original manufacturer or authorized distributors?
All AOZ8312DI 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 AOZ8312DI meets industry standards.
7.What is the process for return or replacement of AOZ8312DI?
All AOZ8312DI units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8312DI, 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 AOZ8312DI part is unused and in its original packaging.
Return procedure for AOZ8312DI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AOZ8312DI 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…
