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STMicroelectronics USBULC6-2P6
- Part No.:
- USBULC6-2P6
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- SOT-563, SOT-666
- Datasheet:
-
USBULC6-2P6.pdf
- Description:
- TVS DIODE 5VWM 17VC SOT666
- Quantity:
- Payment:
- Shipping:
Inventory:8,243
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Product details
Overview
USBULC6-2P6 from STMicroelectronics is a monolithic ultra-low-capacitance ESD protection device for high-speed USB 2.0 data lines, featuring 1.2 pF typical I/O-to-GND capacitance at 1 MHz, 15 kV air/contact ESD immunity per IEC 61000-4-2 Level 4, and clamping voltage of 17 V at 5 A (8/20 µs), deployed in SOT-666 package for compact PCB integration.
For engineers reviewing the USBULC6-2P6 datasheet, USBULC6-2P6 pinout, USBULC6-2P6 application, or USBULC6-2P6 equivalent, key selection criteria include line-to-ground capacitance ≤1.2 pF at 1 MHz, VBUS-compatible 6 V breakdown voltage, dual-channel I/O protection with independent GND reference, and SOT-666 thermal and mechanical compatibility with high-density USB layout constraints.
Technical Context
The device implements monolithic silicon-avalanche diode structures optimized for minimal parasitic capacitance across two bidirectional I/O channels, each referenced to a common GND terminal while supporting VBUS line protection up to 5 V. Its architecture avoids RC networks or varistor-based transient suppression, enabling sub-nanosecond response without signal distortion.
Capacitance remains stable across frequency-0.85 pF at 1 MHz and 0.7 pF at 240 MHz-with ΔC < 0.02 pF variation, ensuring integrity for 480 Mbps USB 2.0 eye diagrams. Leakage current stays ≤0.5 µA at 5 V, critical for battery-powered portable electronics with multi-year standby requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Rating | ±15 kV air / ±15 kV contact discharge per IEC 61000-4-2 Level 4 |
| I/O–GND Capacitance | 1.2 pF typ. @ 1 MHz; preserves USB 2.0 signal integrity up to 480 Mbps |
| Breakdown Voltage | 6 V min. between VBUS and GND; enables safe 5 V VBUS interface protection |
| Clamping Voltage | 17 V max. @ 5 A, 8/20 µs; limits downstream IC stress during ESD events |
| Leakage Current | 0.5 µA max. @ 5 V; extends battery life in portable USB peripherals |
| Package | SOT-666 (1.7 × 1.7 × 0.6 mm); supports high-density routing with 0.5 mm pitch |
Pinout & Package
SOT-666 6-pin plastic package with exposed pad not electrically connected; dimensions: 1.7 mm × 1.7 mm × 0.6 mm, 0.5 mm pin pitch, RoHS-compliant ECOPACK® lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | I/O1 | First protected bidirectional data line (e.g., USB D+) |
| 2 | I/O1 | Redundant terminal for I/O1; must be shorted on PCB to Pin 1 |
| 3 | GND | Common ground reference for all ESD paths and VBUS clamp |
| 4 | VBUS | Protected 5 V power line input; clamped to GND above 6 V |
| 5 | I/O2 | Second protected bidirectional data line (e.g., USB D−) |
| 6 | I/O2 | Redundant terminal for I/O2; must be shorted on PCB to Pin 5 |
Key Features
| Feature | Design Value |
|---|---|
| Dual-channel monolithic ESD protection | Single-die integration of two independent I/O clamps + VBUS clamp eliminates inter-device timing skew |
| Ultra-low inter-line capacitance | 0.55 pF max. I/O–I/O capacitance minimizes crosstalk in differential USB 2.0 pairs |
| Stable high-frequency capacitance | ≤0.02 pF variation from 1–240 MHz ensures consistent impedance matching across full USB bandwidth |
| Low leakage at elevated temperature | ≤0.5 µA at 5 V and 125 °C junction temp maintains battery runtime in hot environments |
Applications
| USB 2.0 High-Speed Interface | Ethernet 10/100/1000BASE-T Port |
|---|---|
Use Scenario: Protection of D+/D− lines in host/device controllers operating at 480 Mbps with tight eye diagram margins. IC Role / Device Role / Timing Role: Bidirectional low-capacitance transient voltage suppressor placed directly at USB connector. Use Value: Maintains >95% signal amplitude and clean eye opening (Fig. 12) while clamping ESD surges to ≤17 V. | Use Scenario: ESD safeguard for Ethernet PHY differential pairs in industrial gateways with shared PCB ground planes. IC Role / Device Role / Timing Role: Common-mode ESD shunt for twisted-pair lanes referenced to local GND and chassis. Use Value: 0.55 pF I/O–I/O capacitance prevents skew-induced jitter in 1000BASE-T signaling. |
| Portable USB Peripheral | Video Interface Line Protection |
Use Scenario: Battery-powered USB flash drives or HID devices requiring multi-year shelf life and low standby drain. IC Role / Device Role / Timing Role: Always-on ESD guard with sub-microamp leakage across VBUS and data lines. Use Value: 0.5 µA max. leakage at 5 V extends coin-cell or Li-ion standby by ≥18 months vs. higher-leakage alternatives. | Use Scenario: HDMI or DisplayPort auxiliary channel protection in thin client displays with limited board space. IC Role / Device Role / Timing Role: Low-profile, dual-line ESD clamp for low-voltage video control signals (DDC, HPD). Use Value: 1.2 pF I/O–GND capacitance avoids signal rise-time degradation on 3.3 V logic-level video sidebands. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD2E001DRYR | 0.8 pF I/O–GND @ 1 MHz; 5.5 V breakdown; no VBUS terminal | Requires external VBUS protection; better for pure data-line-only layouts | Select when VBUS protection is handled separately and lower capacitance is prioritized |
| SP1001-01UTG | 1.0 pF I/O–GND @ 1 MHz; 12 V clamping @ 5 A; SOT-563 package | Larger footprint (2.1 × 1.3 mm); higher clamping degrades margin for 3.3 V I/O | Choose only if SOT-666 assembly capability is unavailable and 12 V clamping is acceptable |
Compared with TPD2E001DRYR and SP1001-01UTG, USBULC6-2P6 uniquely integrates VBUS protection in the same SOT-666 footprint while delivering lowest total system capacitance and highest ESD robustness-critical for space-constrained, high-speed USB 2.0 designs where layout area and signal fidelity are co-constrained.
Availability
USBULC6-2P6 is available at Aetrix Electronics and suitable for USB 2.0 high-speed interfaces, Ethernet 10/100/1000BASE-T ports, and portable electronics requiring stable component supply with guaranteed long-term manufacturability.
Supply support for USBULC6-2P6 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, designing and manufacturing analog, digital, and mixed-signal ICs for industrial, automotive, and consumer applications.
USBULC6-2P6 belongs to ST's Ultra Low Capacitance (ULC) ESD protection product line, engineered specifically for preserving signal integrity in high-speed serial interfaces including USB, HDMI, and Ethernet while meeting stringent IEC 61000-4-2 Level 4 immunity.
FAQ
What is the maximum operating voltage for USBULC6-2P6 on the VBUS pin?
The USBULC6-2P6 has a specified breakdown voltage of 6 V minimum between VBUS and GND at 1 mA test current. It is rated for continuous operation at 5 V VBUS, with clamping action initiating above ~6.5 V to protect downstream circuitry during transients.
Can USBULC6-2P6 be used for USB 3.0 SuperSpeed differential pairs?
No-USBULC6-2P6 is characterized and validated only for USB 2.0 (480 Mbps) operation. Its 1.2 pF I/O–GND capacitance and frequency response are insufficient for USB 3.0 Gen1 (5 Gbps), which requires sub-0.3 pF capacitance and GHz-range bandwidth.
Is the SOT-666 package compatible with standard reflow profiles?
Yes-the SOT-666 package supports JEDEC J-STD-020D-compliant reflow, with peak solder temperature rated at 260 °C for 10 seconds. The ECOPACK® lead-free finish ensures compatibility with Pb-free assembly processes.
Does USBULC6-2P6 require external decoupling capacitors?
A 100 nF ceramic decoupling capacitor between VBUS and GND is recommended per the evaluation board design (Fig. 12). This stabilizes VBUS during ESD clamping events and reduces residual voltage overshoot on the protected line.
USBULC6-2P6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- SOT-563, SOT-666
- Series:
- USB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 17V
- Current - Peak Pulse (10/1000µs):
- 5A (8/20µs)
- Power - Peak Pulse:
- -
- Power Line Protection:
- Yes
- Applications:
- Ethernet
- Capacitance @ Frequency:
- 1pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-666
USBULC6-2P6 FAQ
1.How can I place an order for USBULC6-2P6 through Aetrix?
Please submit a Request for Quotation (RFQ) for USBULC6-2P6 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 USBULC6-2P6 reliable?
The price and inventory of USBULC6-2P6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for USBULC6-2P6 is usually 5 days.
3.What payment methods are accepted for USBULC6-2P6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for USBULC6-2P6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for USBULC6-2P6?
USBULC6-2P6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your USBULC6-2P6 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 USBULC6-2P6?
For technical support, including USBULC6-2P6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your USBULC6-2P6 requirements.
6.How does Aetrix verify that USBULC6-2P6 is sourced from the original manufacturer or authorized distributors?
All USBULC6-2P6 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 USBULC6-2P6 meets industry standards.
7.What is the process for return or replacement of USBULC6-2P6?
All USBULC6-2P6 units undergo pre-shipment inspection (PSI). If there is an issue with USBULC6-2P6, 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 USBULC6-2P6 part is unused and in its original packaging.
Return procedure for USBULC6-2P6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
USBULC6-2P6 Tags
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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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