Semtech has 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. The RClamp1851ZA expands Semtech’s RF protection product family and offers electronics engineers the high reliability and high performance in ESD protection.
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. Contact Semtech to learn more.
