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Semtech Expands Mobile Protection Platform with RClamp® 1851ZA – an 18V TVS Protection Device for Safeguarding NFC and RF Interfaces
Semtech’s RClamp1851ZA protects portable devices from dangerous ESD transients

Semtech Expands Mobile Protection Platform with RClamp® 1851ZA – an 18V TVS Protection Device for Safeguarding NFC and RF Interfaces

Semtech’s RClamp1851ZA protects portable devices from dangerous ESD transients

Camarillo, California - January 28, 2016 -

Semtech Corporation (Nasdaq: SMTC), a leading supplier of analog and mixed-signal semiconductors, today announced the RClamp® 1851ZA, a high-performance, ultra-low capacitance transient voltage suppression (TVS) device. The single-line RClamp1851ZA offers a unique combination of features that protects Near Field Communications (NFC) interfaces in rapidly growing, electronic payment systems.

Built on Semtech’s highly differentiated process technologies that achieve the industry’s lowest clamping voltages, the RClamp1851ZA delivers optimal transient protection for NFC resonator and radio frequency (RF) interfaces. The RClamp1851ZA features a low, typical dynamic resistance, which minimizes harmonic distortion, as well as best in class, low ESD peak clamping voltage to prevent punch through failures during an ESD event. It is housed in an ultra-small, fully encapsulated package, which provides flexibility in circuit design and eases PCB layout. To extend battery life of its end-user applications, the device features low reverse leakage current of <1nA (typical).

“With the fast adoption of electronic payment systems on portable devices, such as smartphones and smart watches, protecting the NFC circuits on these devices ensures reliable operation and enhances user experience,” said Rick Hansen, Product Marketing Director for Semtech’s Protection Products. “The RClamp1851ZA expands Semtech’s RF protection product family and offers electronics engineers the high reliability and high performance in ESD protection that Semtech is known for.”

Key Features of the RClamp1851ZA

  • Transient protection for high-speed signal lines: IEC 61000-4-2 (ESD) ±20kV (air), ±17kV
  • 18V working voltage protection for NFC resonator and other RF circuits
  • Low insertion loss: less than 0.5 dB below 5 GHz operating frequency
  • Ultra-small package size: 0.6mm x 0.3mm with nominal height of only 0.25mm
  • Low capacitance: 0.35pF at VR=0V
  • Low typical dynamic resistance: 0.16 Ohms

Pricing and Availability

The RClamp1851ZA (order code: RClamp1851ZATFT) is available immediately in production quantities and is priced at $0.13 each in 15,000-piece lots. 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 analog and mixed-signal semiconductors for high-end consumer, computing, communications and industrial equipment. Products are designed to benefit the engineering community as well as the global community. The company is dedicated to reducing the impact it, and its products, have on the environment. Internal green programs seek to reduce waste through material and manufacturing control, use of green technology and designing for resource reduction. Publicly traded since 1967, Semtech is listed on the NASDAQ Global Select Market under the symbol SMTC. For more information, visit

Forward-Looking and Cautionary Statements

All statements contained herein that are not statements of historical fact, including statements that use the words "offers," "achieve," "delivers," "protects," " or other similar words or expressions, that describe Semtech Corporation’s or its management’s future plans, objectives or goals are “forward-looking statements” and are made pursuant to the Safe-Harbor provisions of the Private Securities Litigation Reform Act of 1995, as amended.  Such forward-looking statements involve known and unknown risks, uncertainties and other factors that could cause the actual results of Semtech Corporation to be materially different from the historical results and/or from any future results or outcomes expressed or implied by such forward-looking statements.  Such factors are further addressed in Semtech Corporation’s annual and quarterly reports, and in other documents or reports, filed with the Securities and Exchange Commission ( including, without limitation, information under the captions “Management's Discussion and Analysis of Financial Condition and Results of Operations” and “Risk Factors”.  Semtech Corporation assumes no obligation to update any forward-looking statements in order to reflect events or circumstances that may arise after the date of this release, except as required by law.

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