The USBLC6-2SC6 is a high-performance ESD protection chip designed for high-speed data interfaces like USB 2.0, Ethernet, and video lines. With an ultra-low capacitance of 2.5pF (typical) and IEC 61000-4-2 Level 4 compliance (15kV air discharge, 8kV contact discharge), it ensures signal integrity while protecting sensitive electronics from electrostatic discharge. Its SOT-23-6L package minimizes PCB space, making it ideal for portable and industrial applications .
How Does the USBLC6-2SC6 Achieve Superior Signal Integrity?
The USBLC6-2SC6 maintains signal fidelity through:
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Ultra-low capacitance (2.5pF typical, 3.5pF max)—minimizing distortion in high-speed data interfaces (up to 480Mbps for USB 2.0).
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Precise capacitance matching (0.015pF I/O-to-GND tolerance)—ensuring balanced D+/D- signals.
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Fast response time (<1ns)—diverting ESD surges before damage occurs .
Chart:
Signal Integrity Comparison
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Capacitance: 2.5pF (USBLC6-2SC6) vs. 5pF (standard TVS diodes)
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ESD Protection: 15kV (USBLC6-2SC6) vs. 8kV (basic protectors)
What Are the Key Features of the USBLC6-2SC6?
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Dual-Channel Protection: Safeguards two data lines + VBUS simultaneously.
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Low Leakage Current (150nA max): Extends battery life in portable devices.
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Monolithic Integration: Enhances reliability with a single-chip design.
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Wide Temp Range (-40°C to +125°C): Suitable for harsh environments .
Where Is the USBLC6-2SC6 Most Effective?
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USB 2.0/1.1 Ports: Ensures 480Mbps data rates without distortion.
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Ethernet (10/100Mb/s): Protects PHY chips from ESD.
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SIM Cards & Video Lines: Prevents latch-up in mobile devices.
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Industrial IoT: Withstands EMI/ESD in noisy environments .
Buying Tips
When purchasing the USBLC6-2SC6:
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Verify Authenticity: Genuine STMicroelectronics parts include a QR code.
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Check Packaging: Tape-and-reel SOT-23-6L is standard.
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Compare Grades: Ensure IEC 61000-4-2 Level 4 compliance.
For reliable sourcing, Fly-Wing Technology (HK) Co., Limited offers authentic USBLC6-2SC6 chips at competitive prices, with global shipping and obsolete-part solutions.
Electronic Components Expert Views
*”The USBLC6-2SC6’s blend of low capacitance and robust ESD protection is unmatched. Its monolithic design reduces failure points, while the VBUS protection feature is critical for USB applications. However, designers must ensure proper PCB layout—keep traces short to maximize ESD clamp efficiency.”*
FAQ
Q: Can the USBLC6-2SC6 protect USB Type-C ports?
A: Yes, but additional diodes may be needed for CC/SBU lines .
Q: What’s the difference between USBLC6-2SC6 and USBLC6-2P6?
A: The USBLC6-2P6 uses a SOT-666 package (smaller footprint) but offers identical specs .
Q: Is a ferrite bead needed with this ESD protector?
A: Not typically—its low capacitance avoids signal degradation .
In today’s era of increasingly miniaturized and highly integrated electronic devices, electrostatic discharge (ESD) has become a significant factor affecting the performance and reliability of electronic equipment. To protect sensitive electronic components from ESD damage, a low-capacitance transient voltage suppressor diode array (ESD protection component) named USBLC6-2SC6 has emerged. This blog post will delve into the features, technical specifications, and applications of this chip.
1、 Overview of the USBLC6-2SC6 Chip
The USBLC6-2SC6 is an ESD protection chip specifically designed for high-speed data interfaces. With its low capacitance, high integration, and rapid response characteristics, it serves as an ideal protection solution for interfaces such as USB 2.0, USB 3.0, HDMI, SATA, and other electronic products. This chip effectively diverts ESD discharge currents to ground, thereby safeguarding subsequent circuitry from damage.
2、 Key Features
- Low Capacitance Design: The capacitance of the USBLC6-2SC6 is only 0.8pF (I/O to GND), ensuring excellent signal integrity without compromising the high-speed transmission performance of USB 2.0, which supports speeds up to 480Mbps.
- High Integration: The chip integrates protection for two channels and includes a zener diode for voltage protection between VBus and GND. This design simplifies circuit design and enhances protection efficiency.
- Rapid Response: The USBLC6-2SC6 boasts a fast response time, enabling it to quickly react to ESD events by diverting discharge currents to ground, thereby effectively protecting subsequent circuit components.
- High Reliability: The monolithic integrated structure ensures high reliability, low leakage current, low clamping voltage, and stable performance over a wide temperature range.
3、 Technical Specifications
- IEC 61000-4-2 Level 4 ESD protection: ±12kV contact discharge, ±17kV air discharge.
- Reverse blocking voltage (typical): 5V.
- Breakdown voltage (minimum): 6V.
- Clamping voltage (maximum @ Ipp): 15V.
- Peak pulse current (tp=8/20μs) @ 25°C: 4.5A (some sources mention a maximum of 16A, depending on specific conditions or test methods).
- Peak pulse power (tp=8/20μs) @ 25°C: 75W.
- Leakage current (IR): 1μA (maximum).
- Junction capacitance (CJ): 0.8pF.
- Operating temperature: -40°C to 85°C (some sources mention up to 150°C, depending on specific applications or manufacturer specifications).
- Storage temperature: -55°C to 85°C.
- Package: SOT-23-6L.
4、 Applications
The USBLC6-2SC6 chip finds widespread application in various fields, including but not limited to:
- Portable electronic devices: Such as smartphones, tablets, laptops, etc.
- Consumer electronics: Such as USB devices, HDMI-enabled devices, etc.
- Industrial automation: Industrial equipment requiring high reliability and ESD protection.
- IoT devices: Devices that need to withstand ESD events in various environments.
5、 Conclusion
With its low capacitance, high integration, rapid response, and high reliability characteristics, the USBLC6-2SC6 chip stands out as an ideal ESD protection solution for high-speed data interfaces. As electronic devices continue to evolve and the requirements for ESD protection increase, this chip will play an increasingly important role in various industries. Whether in portable electronic devices, consumer electronics, industrial automation, or IoT devices, the USBLC6-2SC6 will provide robust protection for the stability and safety of electronic systems.
