USBLC6-2SC6 Very Low Capacitance ESD Protection | USB 2.0 / Ethernet TVS Array | SOT23-6 | STMicroelectronics

USBLC6-2SC6

Dedicated two-line data plus VBUS ESD protection device for USB 2.0, Ethernet, and video links, operating at 5 V with very low line capacitance (up to about 3.5 pF) and nA-level leakage current, compliant with IEC 61000-4-2 ESD immunity standards, enhancing system-level protection of high-speed interfaces without degrading signal integrity.

Product Description

Product Overview

The USBLC6-2SC6 from STMicroelectronics is a very low capacitance ESD protection device designed for USB 2.0 high-speed interfaces, 10/100 Ethernet, and video lines. It monolithically integrates two data-line protection channels plus one VBUS clamp in a compact SOT23-6 package, simplifying layout and improving reliability.

The device is optimized to meet IEC 61000-4-2 level-4 immunity and uses very low and well-matched parasitic capacitances (a few pF line-to-ground) to preserve USB D+/D– signal integrity and eye-diagram margin, making it suitable for interfaces requiring both robust ESD performance and clean high-speed signaling.

At a 5 V working voltage, the USBLC6-2SC6 provides low clamping voltage and fast response with a maximum leakage current of about 150 nA, reducing standby losses in battery-powered systems, while the simple two-line topology allows placement close to the connector for effective “at-the-port” protection.

Key Features

Two data-line channels plus one VBUS ESD protection path
Typical 5 V operating voltage matching USB 2.0 and other 5 V interfaces
Very low line capacitance up to about 3.5 pF to preserve high-speed signal integrity
Very low leakage current up to about 150 nA, minimizing standby power
Compliant with IEC 61000-4-2/-4/-5 system immunity tests
Low clamping voltage with fast response for efficient ESD and surge energy absorption
Monolithic structure with tight capacitance matching between lines, minimizing differential skew
Package: SOT23-6 suited for high-density, space-constrained interface designs

Product Applications

ESD protection for USB 2.0 host/device/OTG interfaces on D+/D– and VBUS
ESD and surge protection for 10/100 Ethernet PHY-side differential pairs
Front-end protection for HDMI/DVI, LVDS, MIPI D-PHY and other high-speed video/display links
EMC protection for external USB/network connectors in industrial HMIs and panels
Protection of external data ports in set-top boxes, gateways, routers, DVR/NVR, and consumer/security equipment
High-speed interface port protection in portable instruments, meters, and medical electronics

Technical Specifications

Parameter	Specification
Lines Protected	2 data lines + VBUS
Working Voltage (VRWM)	5 V (typical)
Breakdown Voltage	≈ 6 V (typical range)
Leakage Current	≤ 150 nA
Line Capacitance	≤ 3.5 pF (line-to-ground)
IEC 61000-4-2 Level	Level 4
IEC 61000-4-4	EFT 40 A (5/50 ns)，Lightning 6 A (8/20 µs)
Junction Temp Range	–40 °C ~ +125 °C
Package	SOT23-6

RFQ & Support

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