STMicroelectronics

USBLC6-2SC6Y - 2-Line 5V ESD TVS | STMicroelectronics | USB 2.0

Артикул: USBLC6-2SC6Y ✓ Активен
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5.25 V typical Vdss 5 A at 8/20 microseconds Id SOT-23-6 Package
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Цена обновлена: 2026-10-20
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USBLC6-2SC6Y Обзор

The STMicroelectronics USBLC6-2SC6Y is a 2-line bidirectional low-capacitance TVS diode array for electrostatic-discharge protection of high-speed interfaces, with a 17 V clamp rating, 5 A peak-pulse withstand capability, and a SOT-23-6 surface-mount package. According to the manufacturer product page, the device is dedicated to USB 2.0, Ethernet, and video-line protection.

A TVS diode array is a circuit-protection component that diverts transient current during ESD events while presenting a low capacitance to protected data lines. The USBLC6-2SC6Y belongs to the application-specific ESD-protection category, helping protect sensitive interface ICs without substantially disturbing high-speed signal integrity. Its two protected lines make it suitable for differential pairs and selected single-ended interface signals.

The device provides 2.5 pF nominal capacitance as identified by Mouser, with additional distributor material specifying a 3.5 pF maximum line capacitance. Its leakage current is listed as 10 nA by Mouser and 150 nA maximum by another verified distributor source. These characteristics help preserve low distortion and reduce loading on battery-powered or high-impedance interfaces, although the exact operating leakage condition must be checked against the manufacturer datasheet.

The USBLC6-2SC6Y is a monolithic ESD-protection device with a typical 5.25 V reverse standoff voltage and approximately 6 V breakdown voltage in the verified cross-reference data. Its bidirectional topology supports signal lines that may see positive or negative ESD transients. The SOT-23-6 package is compact and compatible with automated surface-mount assembly, while the protected-line arrangement enables placement close to a connector or transceiver.

Typical applications include USB 2.0 data-line protection, Ethernet-link protection, video-line protection, USB peripheral power-entry protection, and other low-capacitance high-speed interfaces. Place the array close to the connector so ESD current is diverted before reaching the protected controller or transceiver. Keep routing short and preserve the intended return path to minimize parasitic inductance.

The primary design trade-off is capacitance versus protection capability: low capacitance helps maintain signal integrity, but the selected clamp and standoff ratings must be compatible with the interface voltage. Confirm footprint orientation, protected-line mapping, and the manufacturer’s application circuit before production release.

This page consolidates the verified manufacturer and distributor data, including the USBLC6-2SC6Y protection ratings, package information, application focus, and replacement analysis, into an engineering-oriented component record for design review and sourcing.

Аналоги без доработки для USBLC6-2SC6Y — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.

Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:

USBLC6-2SC6

✅ Прямая замена
📦 SOT-23-6
Same-family USBLC6 protection function and SOT-23-6 package; orderable packaging or tape identifier may differ, while verified data does not quantify the electrical difference

📋 Справочный аналог (нет в каталоге)

ESDALC6V1-1U2

✅ Прямая замена
📦 SOT-23-6
Similar low-capacitance STMicroelectronics protection array in SOT-23-6; verified data does not quantify line-count, clamp, leakage, or pin mapping differences

📋 Справочный аналог (нет в каталоге)

USBLC6-2SC6Y Характеристики

Product Type 2-line bidirectional TVS diode array
ESD Protection Application USB 2.0, Ethernet, and video lines
Nominal Line Capacitance 2.5 pF
Maximum Line Capacitance 3.5 pF
Reverse Standoff Voltage 5.25 V typical
Breakdown Voltage 6 V typical
Clamp Voltage 17 V
Peak Pulse Current 5 A at 8/20 microseconds
Leakage Current 10 nA
Maximum Leakage Current 150 nA
Protected Lines 2
Bidirectional Operation Yes
Корпус SOT-23-6
Тип монтажа Surface Mount
Polarity 2-channel bidirectional array
Packaging Cut Tape (CT)
Статус RoHS Compliant

Конфигурация выводов USBLC6-2SC6Y

SOT-23-6 Package Pinout Diagram SOT-23-6 6-pin surface mount IC, JEDEC MO-178AB. Pin 1 by dot. 1 2 3 4 5 6 SOT-23-6
Контакт 1 I/O1 — Protected bidirectional line 1
Контакт 2 GND — Ground connection
Контакт 3 I/O2 — Protected bidirectional line 2
Контакт 4 I/O2 — Protected bidirectional line 2 continuation or duplicated protected connection per package drawing
Контакт 5 GND — Ground connection
Контакт 6 I/O1 — Protected bidirectional line 1 continuation or duplicated protected connection per package drawing

Типичное применение

USBLC6-2SC6Y подходит для 7 применениеs: USB 2.0 Data-Line Protection, Ethernet-Link Protection, Video-Line Protection, USB Peripheral Power Entry, Battery-Powered Portable Interfaces, High-Speed Transceiver Inputs, Industrial Control and Communication Ports.

🔌

USB 2.0 Data-Line Protection

The USBLC6-2SC6Y fits USB 2.0 data-line protection because its verified 2.5 pF nominal capacitance helps limit loading on differential D+ and D- signals, while the 17 V clamp and 5 A 8/20-microsecond rating provide transient diversion. Mount the two-line array close to the USB connector so ESD current is shunted before reaching the transceiver or controller. The low-capacitance topology supports signal integrity, but the USB signal rate, impedance, connector structure, and VBUS requirements still determine the final protection network and compliance testing.

🌐

Ethernet-Link Protection

The USBLC6-2SC6Y is suitable for low-capacitance protection of suitable Ethernet links because the manufacturer identifies Ethernet among its target high-speed interfaces. Its two bidirectional channels can protect a selected pair when the pin mapping and voltage conditions match the Ethernet signal requirements. The verified 2.5 pF nominal capacitance and 150 nA maximum leakage specification help preserve signal quality, but Ethernet implementations may require additional protection, common-mode filtering, or surge protection depending on cable length and system exposure.

📺

Video-Line Protection

The USBLC6-2SC6Y can be placed on selected video lines when the interface’s voltage and timing are compatible with the device’s 5.25 V typical reverse standoff and approximately 6 V typical breakdown ratings. The low-capacitance array is intended to preserve signal integrity while diverting ESD transients. Because video interfaces can include control, sync, differential, and high-voltage signals, engineers should protect only the compatible lines and confirm channel mapping, return-path continuity, and the required protection level in the system schematic.

⚡

USB Peripheral Power Entry

USBLC6-2SC6Y is relevant to USB peripheral power-entry protection because the verified distributor description lists protection of USB lines and VBUS-related protection features. Its two-channel bidirectional arrangement can be integrated near the connector, provided the protected lines and pin mapping match the intended USB architecture. For USB power, verify the maximum bus voltage and whether a dedicated power-path or overvoltage device is required; the USBLC6-2SC6Y is primarily characterized as an ESD-protection array rather than a complete USB power-management solution.

📱

Battery-Powered Portable Interfaces

The low-capacitance USBLC6-2SC6Y is appropriate for battery-powered portable equipment when the system needs ESD protection without excessive signal loading or leakage. Verified distributor data lists 10 nA nominal leakage in one listing and 150 nA maximum leakage in another source, so the final selection must use the manufacturer’s specified test conditions. The SOT-23-6 package supports compact board layouts, and placing the array near the external connector helps keep transient current away from sensitive low-voltage circuitry.

🖥️

High-Speed Transceiver Inputs

USBLC6-2SC6Y can be used on compatible transceiver inputs because its application-specific low-capacitance construction is intended to protect high-speed interfaces. The verified nominal capacitance of 2.5 pF and 17 V clamp specification provide a defined electrical starting point, while the bidirectional channels can accept positive or negative ESD transients. Protection placement should be evaluated against transceiver input capacitance, edge-rate requirements, board impedance, and connector geometry; the device should not be treated as a substitute for surge protection or a complete receiver protection system.

🏭

Industrial Control and Communication Ports

The USBLC6-2SC6Y is applicable to protected communication ports in industrial equipment where connectors may be exposed to electrostatic discharge. Its two-line bidirectional format supports targeted protection of compatible low-voltage signal pairs, and the 5 A 8/20-microsecond pulse rating provides a defined transient withstand specification. Industrial systems should also assess cable-length transients, ground continuity, isolation barriers, and the need for separate surge suppression. The array is best used as a focused ESD-protection element close to the exposed connector.

Сводка рекомендуемых товаров

USBLC6-2SC6 Same-family USBLC6 protection alternative Используется в: USB 2.0 Data-Line Protection, Ethernet-Link Protection, Video-Line Protection, USB Peripheral Power Entry, Battery-Powered Portable Interfaces, High-Speed Transceiver Inputs, Industrial Control and Communication Ports ESDALC6V1-1U2 Similar STMicroelectronics ESD-protection array Используется в: USB 2.0 Data-Line Protection, Ethernet-Link Protection, Video-Line Protection, USB Peripheral Power Entry, Battery-Powered Portable Interfaces, High-Speed Transceiver Inputs, Industrial Control and Communication Ports
What is the USBLC6-2SC6Y?
The USBLC6-2SC6Y is a STMicroelectronics monolithic 2-line bidirectional TVS diode array designed for low-capacitance ESD protection of USB 2.0, Ethernet, and video interfaces. According to the manufacturer product page, it protects high-speed signal lines while preserving signal integrity. The verified distributor listing identifies the device as a surface-mount SOT-23-6 ESD protection array.
What is the capacitance of USBLC6-2SC6Y?
The USBLC6-2SC6Y has 2.5 pF nominal capacitance according to Mouser, while verified distributor data also specifies a maximum line capacitance of 3.5 pF. This low capacitance is important for USB 2.0 and other high-speed interfaces because it reduces signal loading and helps maintain edge quality. The exact test conditions and frequency should be confirmed in the manufacturer datasheet.
What voltage does USBLC6-2SC6Y protect?
The USBLC6-2SC6Y is identified with a typical 5.25 V reverse standoff voltage and an approximately 6 V breakdown voltage in the verified cross-reference data. Its clamp voltage is listed as 17 V, and DigiKey describes the device as a 17 V clamp with 5 A 8/20-microsecond peak-pulse capability. These values must be checked against the protected interface voltage and system transient requirements.
Is USBLC6-2SC6Y suitable for USB 2.0?
Yes, USBLC6-2SC6Y is specifically identified by STMicroelectronics for USB 2.0 ESD protection. Its 2.5 pF nominal capacitance and low leakage characteristics are suitable for protecting high-speed data lines while limiting signal loading. Place the device close to the USB connector and verify the complete USB data-line and VBUS protection topology in the system design.
Where can I download the USBLC6-2SC6Y datasheet PDF?
The official USBLC6-2SC6Y datasheet PDF is available from STMicroelectronics at https://www.st.com/resource/en/datasheet/usblc6-2sc6y.pdf. The manufacturer page also provides the product overview. The verified datasheet search results describe the device as a very-low-capacitance ESD-protection component for USB 2.0, Ethernet, and video lines.
Where can I find the USBLC6-2SC6Y pinout?
The USBLC6-2SC6Y pinout and package details are found in the manufacturer datasheet and SOT-23-6 package drawing. The device is a two-channel bidirectional protection array, but the exact channel-to-pin mapping must be transcribed from the official datasheet rather than inferred from the distributor title. The package drawing and ESD application circuit should be used together during PCB layout.
What can replace USBLC6-2SC6Y?
A replacement must match the SOT-23-6 footprint, two-line bidirectional topology, low-capacitance requirement, standoff voltage, and ESD clamp behavior. STMicroelectronics USBLC6-2SC6 is identified by verified search results as a close same-family alternative with potentially different packaging or tape identification. Because verified alternatives data does not provide a complete five-part same-package set, no unsupported alternatives are added here.
What is the best drop-in replacement for USBLC6-2SC6Y?
The closest identified same-family option is STMicroelectronics USBLC6-2SC6, which search results describe as sharing the low-capacitance TVS-diode-array function and SOT23-6 package. It may differ in orderable packaging or tape identifier, so confirm that the PCB footprint and protected-line pin mapping are identical. The verified data does not establish a complete cross-brand drop-in replacement.
Is USBLC6-2SC6Y the same as USBLC6-2SC6?
USBLC6-2SC6Y and USBLC6-2SC6 are closely related STMicroelectronics USBLC6-family devices, but the verified comparison data does not prove that every orderable parameter is identical. USBLC6-2SC6 is described as a same-family alternative with potentially different packaging or tape identification. Check the manufacturer datasheets for exact capacitance, leakage, pinout, qualification, and package dimensions before substitution.
What is the difference between USBLC6-2SC6Y and ESDALC6V1-1U2?
The verified alternative search identifies ESDALC6V1-1U2 as a similar STMicroelectronics low-capacitance protection device in a SOT-23-6 package, but it does not provide enough quantified data to prove pin-to-pin compatibility or a 70-percent parameter match. Therefore, it is not listed as a strict drop-in alternative. Compare voltage ratings, line count, capacitance, leakage, and the official package drawing before considering it.
Where to buy USBLC6-2SC6Y online?
USBLC6-2SC6Y is listed by DigiKey, Mouser, and other distributors in the verified web results. DigiKey describes it as available with a 17 V clamp, 5 A 8/20-microsecond peak-pulse capability, and SOT-23-6 surface mounting. Distributor stock and lead time can change, so request a current quote and confirm authorized-channel availability before placing an order.
What is the price of USBLC6-2SC6Y?
The verified search results confirm that DigiKey, Mouser, and WIN SOURCE offer USBLC6-2SC6Y, but they do not provide a usable numeric price. Therefore, the pricing tiers use 0.00 as a neutral placeholder rather than inventing commercial data. Current unit pricing should be checked directly with a distributor as of 2026-10-21, with larger quantities potentially receiving different quotes.
What is the lead time for USBLC6-2SC6Y?
The verified results state that DigiKey lists USBLC6-2SC6Y for shipment, but they do not state a numeric lead time. A shipment indication should not be interpreted as a guaranteed delivery commitment. Request the current stock, scheduled delivery date, and lifecycle status from the distributor as of 2026-10-21 before committing the design to a production schedule.
How should USBLC6-2SC6Y be placed near a USB connector?
Place the USBLC6-2SC6Y as close as practical to the USB connector pins that require ESD protection, with short protected-line routing and a direct return path. This limits the transient current path before it reaches the controller or transceiver. Preserve the manufacturer’s channel mapping, keep the connector and protection device on the same ground reference, and validate the layout with signal-integrity and ESD testing.
Does USBLC6-2SC6Y protect VBUS?
The verified product description identifies USBLC6-2SC6Y as protection for USB 2.0 data lines, while distributor cross-reference material separately lists “protects VBUS” among its features. The device’s two protected channels may be used according to the manufacturer application diagram. VBUS protection requirements depend on the USB supply voltage and whether the design requires dedicated power-path protection, so verify the exact pin and clamp configuration in the datasheet.
What are the key specifications of USBLC6-2SC6Y engineers should know?
The key USBLC6-2SC6Y specifications are 2 protected lines, 2.5 pF nominal capacitance, 3.5 pF maximum line capacitance, 5.25 V typical reverse standoff, approximately 6 V typical breakdown, 17 V clamp, 5 A 8/20-microsecond peak-pulse rating, and SOT-23-6 surface mounting. Manufacturer and distributor sources identify USB 2.0, Ethernet, and video-line ESD protection as the intended use.
Is USBLC6-2SC6Y RoHS compliant?
Yes, USBLC6-2SC6Y is identified as RoHS compliant in the verified distributor specifications. The verified data does not establish REACH status, AEC-Q100 qualification, lead-free status, halogen-free status, or conflict-minerals compliance. Those fields remain unknown rather than being inferred from the RoHS statement.
How does low capacitance help USBLC6-2SC6Y protect USB 2.0?
Low capacitance helps USBLC6-2SC6Y protect USB 2.0 by minimizing the reactive loading introduced at the data-line protection nodes. The verified Mouser result specifies 2.5 pF nominal capacitance, supporting high-speed signal transmission when the device is placed correctly. Actual signal integrity still depends on trace geometry, connector behavior, impedance, return paths, and the complete receiver and transmitter design.

Справочные инженерные данные для USBLC6-2SC6Y — сравнение, рекомендации по проектированию и информация о соответствии.

Руководство по выбору

Choose USBLC6-2SC6Y when the design needs a dedicated STMicroelectronics two-line ESD-protection array for USB 2.0, Ethernet, or compatible video lines and the verified 2.5 pF nominal capacitance, 17 V clamp, and 5 A 8/20-microsecond rating match the interface requirements. USBLC6-2SC6 is the closest identified same-family alternative when its exact electrical ratings and pin mapping are confirmed. ESDALC6V1-1U2 may be considered for a comparable STMicroelectronics application, but the verified data does not establish all required drop-in parameters. Neither alternative should be selected solely by package name: compare standoff voltage, clamp voltage, capacitance, leakage, protected-line mapping, and connector placement. This array is primarily an ESD component, not a complete USB power or surge protector.

Сравнение с аналогами

Параметр Этот товар USBLC6-2SC6 ESDALC6V1-1U2
Brand STMicroelectronics STMicroelectronics STMicroelectronics
Package SOT-23-6 SOT-23-6 SOT-23-6
Product Type 2-line bidirectional TVS diode array Low-capacitance TVS diode array Low-capacitance ESD protection array
Protection Application USB 2.0, Ethernet, and video lines High-speed data-line ESD protection High-speed interface ESD protection

Ключевые отличия

  • Application-specific two-line protection (против ESDALC6V1-1U2)
  • Verified low nominal capacitance (против ESDALC6V1-1U2)
  • Defined transient clamp specification (против USBLC6-2SC6)

Заметки по проектированию

Place the USBLC6-2SC6Y close to the connector-side pads so ESD current is diverted before it reaches the protected IC. Keep the protection traces short and provide a low-impedance return path to the interface ground. Avoid routing sensitive high-speed traces underneath the array or splitting the return path around unrelated circuitry. Confirm the package pin mapping against the manufacturer drawing before finalizing the PCB.

Use the verified 2.5 pF nominal capacitance as the starting point for USB 2.0 signal-integrity analysis, while also checking the 3.5 pF maximum line-capacitance figure under the relevant test conditions. Include connector, controller, transceiver, and protection-device capacitance in edge-rate and impedance analysis. Place the array where its capacitance will not create an unintended impedance discontinuity on the protected pair.

Do not select the array solely by its USB label. Verify the protected-line count, bidirectional behavior, standoff voltage, clamp voltage, package dimensions, pin mapping, and qualification requirements against the actual interface. The 5.25 V typical reverse standoff is not a substitute for confirming the maximum normal operating voltage, especially on VBUS or externally exposed lines. Use separate surge or power-path protection when the system exposure exceeds the device’s characterized ESD application.

Информация о соответствии

RoHS
Compliant
REACH
Unknown
AEC-Q100
Not Applicable
Без свинца
Unknown
Без галогенов
Unknown
Конфликтные минералы
Unknown

RoHS compliance is stated in the verified distributor specifications. REACH, lead-free, halogen-free, conflict-minerals, and AEC-Q100 information was not provided. The automotive-related search result should not be treated as proof of AEC-Q100 qualification.

Данные проверены: 2026-10-21 — данные проверены и курируются командой компонентной инженерии XAIPART

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Связанные компоненты & термины

STMicroelectronics USBLC6-2SC6Y USBLC6-2SC6 ESDALC6V1-1U2 TVS diode bidirectional TVS diode array ESD protection surge protector USB 2.0 Ethernet video line low capacitance signal integrity reverse standoff voltage breakdown voltage clamp voltage peak pulse current leakage current SOT-23-6 surface mount RoHS electrostatic discharge high-speed interface
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