TVS device protects portable devices from dangerous ESD transients

Semtech has introduced the RClamp 1851ZA, a high-performance ultra low-capacitance transient voltage suppression (TVS) device. The single-line RClamp1851ZA offers a novel combination of features that protects near field communications (NFC) interfaces in rapidly growing, electronic payment systems. Built on Semtech's highly differentiated process technologies which 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. The device 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), says the company. "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, protection products, Semtech. "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."