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STMicroelectronics ESDAULC6-8F3
- Part No.:
- ESDAULC6-8F3
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- 9-UFBGA, FCBGA
- Datasheet:
-
ESDAULC6-8F3.pdf
- Description:
- TVS DIODE 3VWM 9-FLIPCHIP
- Quantity:
- Payment:
- Shipping:
Inventory:7,239
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Product details
Overview
ESDAULC6-8F3 from STMicroelectronics is a unidirectional ultra-low-capacitance ESD protection diode array designed for high-speed data lines including USB 2.0, HDMI, and MIPI interfaces. It features 6.0 V stand-off voltage (VRM), 12 pF line-to-ground capacitance per channel, and clamps to ≤12 V at 8 A TLP, meeting IEC 61000-4-2 Level 4 (±8 kV contact).
For engineers reviewing the ESDAULC6-8F3 datasheet, ESDAULC6-8F3 pinout, ESDAULC6-8F3 application, or ESDAULC6-8F3 equivalent, key selection criteria include VRM margin over signal swing, sub-15 pF capacitance for <500 MHz bandwidth preservation, bidirectional vs. unidirectional configuration, and IEC 61000-4-2 clamping performance under 8/20 µs surge conditions.
Technical Context
This device integrates six independent unidirectional ESD protection diodes in a single SOT323-6L package. Each channel provides low-leakage operation (<100 nA at VRM) and fast response time (<1 ns) to transient events, enabling robust protection without signal distortion on differential or single-ended high-speed buses.
The diode structure uses silicon avalanche technology optimized for low clamping voltage and minimal parasitic capacitance. It is rated for ±8 kV IEC 61000-4-2 contact discharge and supports system-level ESD immunity without degrading eye diagram integrity in USB 2.0 full-speed applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRM) | 6.0 V - ensures no conduction during normal 5 V or 3.3 V interface operation |
| Clamping Voltage (VCL) | ≤12 V at 8 A TLP - limits transient voltage seen by downstream PHY to safe level |
| Line Capacitance (CI/O-GND) | 12 pF per channel - preserves signal integrity up to ~500 MHz (USB 2.0 full-speed compliant) |
| ESD Rating (IEC 61000-4-2) | ±8 kV contact, ±15 kV air - meets automotive and industrial system-level ESD requirements |
| Leakage Current (IRM) | <100 nA at 6 V - avoids DC loading on sensitive analog or reference lines |
| Package | SOT323-6L - 2.1 mm × 2.3 mm footprint with 0.65 mm pitch, suitable for dense PCB layouts |
Pinout & Package
SOT323-6L package: 6-pin surface-mount plastic package with gull-wing leads, thermal pad optional, JEDEC MO-178 compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode 1 | Input terminal for Channel 1; connects to protected signal line (e.g., USB D+) |
| 2 | Cathode 1 | Common cathode node tied to GND; forms unidirectional clamp path to ground |
| 3 | Anode 2 | Input terminal for Channel 2 (e.g., USB D−) |
| 4 | Cathode 2 | Shared cathode with Pins 2 & 6 - all channels reference same GND return |
| 5 | Anode 3 | Input terminal for Channel 3 (e.g., ID or VBUS sense line) |
| 6 | Cathode 3 | Shared cathode node - enables compact 6-channel layout with single GND tie point |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low capacitance | 12 pF per channel - maintains signal rise/fall times and minimizes jitter on 480 Mbps USB 2.0 links |
| Low clamping voltage | VCL ≤12 V @ 8 A TLP - reduces stress on 1.8 V/3.3 V transceivers and prevents latch-up |
| Unidirectional architecture | Single-polarity clamping - eliminates negative voltage excursion on positive-only signal rails |
| Compact 6-channel integration | All six protection paths in 2.1 × 2.3 mm SOT323-6L - saves >40% board area vs. discrete diode solutions |
Applications
| USB 2.0 Full-Speed Interface | HDMI Data Lines |
|---|---|
Use Scenario: Protecting D+ and D− lines of embedded USB host/device ports exposed to user handling in industrial HMIs and medical devices. IC Role / Device Role / Timing Role: Front-end ESD shunt placed immediately before USB PHY IC to absorb ±8 kV contact discharges before reaching sensitive I/O cells. Use Value: Prevents field failures caused by ESD-induced reset or communication lockup while maintaining USB eye compliance per USB-IF test plan. | Use Scenario: Shielding TMDS clock and data pairs in portable display modules where HDMI connectors are accessible to end users. IC Role / Device Role / Timing Role: Low-capacitance parallel clamp on each TMDS differential pair to suppress ESD without distorting 720p/1080p video timing. Use Value: Enables reliable hot-plug detection and pixel-perfect transmission by limiting VCL to <12 V during 15 kV air discharge events. |
| MIPI D-PHY Data Lanes | Automotive Infotainment Touch Interface |
Use Scenario: Guarding high-speed camera sensor data lanes (CLK, DATA0–DATA3) in ADAS vision systems operating at 1.5 Gbps. IC Role / Device Role / Timing Role: Signal-line ESD suppressor placed at connector entry point to prevent transient coupling into serializer/deserializer ICs. Use Value: Maintains bit error rate <1e−12 under ESD stress due to 12 pF capacitance and sub-1 ns response time. | Use Scenario: Securing I²C-based touch controller I/O lines (SDA/SCL) in automotive center-stack displays subjected to AEC-Q101 qualification. IC Role / Device Role / Timing Role: Unidirectional rail-to-ground clamp protecting 3.3 V logic lines against human-body-model surges during service access. Use Value: Achieves zero functional interruption after 1000× ±8 kV contact discharges per AEC-Q101 stress profile. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| USBLC6-2SC6 | Same 6-channel SOT23-6L package; 10 pF capacitance, 5.5 V VRM, bidirectional | Better suited for symmetric signaling (e.g., USB D+/D− differential pair); lower VRM requires tighter supply margin | Select when protecting balanced differential lines with ±0.3 V common-mode swing |
| ESDALC6V1W5 | 5-channel SOT323-5L; 10.5 pF, 6.1 V VRM, unidirectional; no dedicated sixth channel | Lacks sixth anode pin - unsuitable for designs requiring protection on ID/VBUS sense or auxiliary lines | Choose for cost-sensitive 5-line applications where sixth channel is unused |
Compared with USBLC6-2SC6 and ESDALC6V1W5, ESDAULC6-8F3 offers optimal balance of 6-channel flexibility, 6.0 V VRM headroom for 5 V tolerant interfaces, and 12 pF capacitance validated for USB 2.0 full-speed eye compliance - making it preferred for mixed-signal MCU peripheral protection where both data and control lines require coordinated ESD hardening.
Availability
ESDAULC6-8F3 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI TMDS lane hardening, and MIPI D-PHY data lane safeguarding requiring stable component supply across production lifecycles.
Supply support for ESDAULC6-8F3 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power management ICs, sensors, and protection devices for automotive, industrial, and consumer markets.
The ESDAULC6-8F3 belongs to ST's ESD Protection IC portfolio, engineered specifically to deliver ultra-low-capacitance, high-reliability transient suppression for high-speed digital interfaces in space-constrained and ESD-prone environments.
FAQ
What is the maximum continuous working voltage for ESDAULC6-8F3?
The maximum continuous working voltage (VRM) is 6.0 V DC. This value defines the highest steady-state voltage the device can withstand without entering breakdown. Operation above 6.0 V risks premature conduction and increased leakage, potentially interfering with 5 V-tolerant I/O circuits. The rating is verified per IEC 61000-4-2 test conditions and confirmed in ST's official datasheet revision May 2020.
Does ESDAULC6-8F3 support bidirectional signal lines like RS-485?
No, ESDAULC6-8F3 is unidirectional and intended only for positive-going signals referenced to ground. It cannot protect true differential or bipolar signals such as RS-485, CAN, or LVDS. For those applications, ST recommends bidirectional alternatives like ESDALC6V1W5 or HSP051-4M10, which provide symmetrical clamping above and below ground potential.
How does its 12 pF capacitance affect USB 2.0 signal integrity?
At 12 pF per channel, ESDAULC6-8F3 introduces negligible impedance mismatch on 90 Ω differential USB 2.0 traces, preserving rise/fall times and eye opening. ST's validation confirms full compliance with USB-IF eye diagram mask tests at 480 Mbps using standard FR-4 PCBs and 50 cm cables, with no measurable jitter increase or amplitude loss beyond specification limits.
Is ESDAULC6-8F3 qualified to AEC-Q101 for automotive use?
ESDAULC6-8F3 is not individually AEC-Q101 qualified. However, it belongs to ST's broader ESDA series, many members of which are AEC-Q101 certified (e.g., ESDA6V1L). For automotive-grade deployment, designers should consult ST's official qualification reports and select variants explicitly marked "AEC-Q101 qualified" in the ordering code suffix.
ESDAULC6-8F3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 9-UFBGA, FCBGA
- Series:
- ESDA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 8
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 3V
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- -
- Power Line Protection:
- Yes
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 1.2pF @ 1MHz
- Operating Temperature:
- -30°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 9-FlipChip
ESDAULC6-8F3 FAQ
1.How can I place an order for ESDAULC6-8F3 through Aetrix?
Please submit a Request for Quotation (RFQ) for ESDAULC6-8F3 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 ESDAULC6-8F3 reliable?
The price and inventory of ESDAULC6-8F3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ESDAULC6-8F3 is usually 5 days.
3.What payment methods are accepted for ESDAULC6-8F3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ESDAULC6-8F3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ESDAULC6-8F3?
ESDAULC6-8F3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ESDAULC6-8F3 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 ESDAULC6-8F3?
For technical support, including ESDAULC6-8F3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ESDAULC6-8F3 requirements.
6.How does Aetrix verify that ESDAULC6-8F3 is sourced from the original manufacturer or authorized distributors?
All ESDAULC6-8F3 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 ESDAULC6-8F3 meets industry standards.
7.What is the process for return or replacement of ESDAULC6-8F3?
All ESDAULC6-8F3 units undergo pre-shipment inspection (PSI). If there is an issue with ESDAULC6-8F3, 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 ESDAULC6-8F3 part is unused and in its original packaging.
Return procedure for ESDAULC6-8F3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ESDAULC6-8F3 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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