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Semtech's RailClamp Device Sets New Size and Performance Standards for Protection of High-Speed Data Interfaces.

CAMARILLO, Calif. -- Semtech Corp. (Nasdaq:SMTC):

--Small Enough to Provide Protection within a Cable Connector to Conserve Board Space;

--Device Targeted at Systems Using USB 2.0, Gigabit Ethernet and DVI Protocols

Semtech Corp. (Nasdaq:SMTC), a leading supplier of analog and mixed-signal semiconductors for communications, portable devices, computers, and industrial equipment, today announced the RClamp(tm)0504N, a 5.0V protection device aimed at next-generation monitors, laptops, television set top boxes, and networking equipment using high-speed I/O protocols.

The RClamp0504N measures a mere 2.0 x 2.0 x 0.6 mm. It features an array of surge-rated steering diodes and a low voltage TVS diode, and protects up to 4 data lines. The device's low capacitance of 3pF (typical) allows it to operate with no insertion loss to 1 GHz.

The advent of USB 2.0, Gigabit Ethernet, DVI, and other high-speed data protocols has created a greater need for protection from cable discharge events (CDE) -- the insertion of a statically charged connector -- that can cause a system failure. The RClamp0504N features a fast response time, low inductance, and greater electrostatic discharge (ESD) protection for these applications.

"CDEs are becoming a huge issue for electronics makers because without the right protection for higher speed I/O lines, they could see an increase in warranty claims when transient electricity destroys a key component," said Tom Dugan, Semtech's Director of Protection Products. "The RClamp0504N gives these products the ESD protection they need to alleviate this problem, along with a small form factor that allows designers to be creative with how to protect their systems -- by putting the protection in the connector, for example."

The device is in Semtech's leadless package design, which is 66 percent smaller than the leading industry solution. That small package size is a result of Semtech manufacturing process advances that shrink the semiconductor features and enable the single-die design. The small size also means the device can be used in USB or Ethernet cable connectors, protecting monitors, laptops, and other small systems where board space is at a premium.

RClamp0504N is part of Semtech's RailClamp(R) protection device family, which includes the SRV05-4. The SRV05-4 is an established leader in low voltage protection devices. It had been used in many applications, including laptop computers where high-speed ports are prevalent. The RClamp0504N is designed for next-generation designs where the requirement for small form factor is critical. This device replaces the SRV05-4 where board space is limited.

RClamp0504N is designed to meet the following IEC requirements: IEC 61000-4-2 (ESD) +/-15kV (air) and +/-8kV (contact), IEC 61000-4-4 (EFT) 40A (5/50ns), and IEC 61000-4-5 (lightning) 12A (8/20usec).

The lead-free design of the device complies with the European Union's Restriction on Hazardous Substances in Electrical and Electronic Equipment (RoHS) directive to meet worldwide environmental and regulatory requirements.

Key Features of the RClamp0504N

--Low capacitance (3pF typical) for low insertion loss to 1 GHz

--Small SLP package and footprint for saving board space

--Low clamping voltage to minimize stress to protected circuit

--Low operating voltage: 5V

--Protects 4 I/O lines

--Meets IEC 61000-4-2 (ESD), Level 4, +/- 15kV (air) and +/- 8kV (contact), and IEC 61000-4-5 (lightning) 12A (8/20usec) for protection of sensitive components in a high threat environment

--Meets IEC 61000-4-5 (lightning) 12A (8/20usec)

Pricing and Availability

The RClamp0504N is available immediately in production quantities and is priced at $0.51 each in 1,000-piece lots. The ordering code is RClamp0504N.TCT. Semtech offers comprehensive design assistance, including field- and factory-based support. Data sheets, volume pricing, and delivery quotes, as well as evaluation kits and samples, are available by contacting

About Semtech

Semtech Corporation is a leading supplier of high-quality analog and mixed-signal semiconductor products. The company is dedicated to providing customers with proprietary solutions and breakthrough technology in power management, protection, advanced communications, human interface, test & measurement, and wireless connectivity products. Publicly traded since 1967, Semtech is listed on the NASDAQ National Market under the symbol SMTC. For more information, contact Semtech Corp. at 200 Flynn Road, Camarillo, CA 93012-8790; phone 805-498-2111; email to; or visit its web site at

Semtech, the Semtech logo, RailClamp, and RClamp are marks of Semtech Corporation.
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Comment:Semtech's RailClamp Device Sets New Size and Performance Standards for Protection of High-Speed Data Interfaces.
Publication:Business Wire
Geographic Code:1USA
Date:Dec 13, 2005
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