Semtech Announces RClamp® 1255P – A Highly Integrated TVS Protection Device for Safeguarding USB 2.0 Interfaces on Portable Devices

Semtech’s RClamp1255P Protects USB 2.0 Data Lines From ESD Transients and VBUS From Surges, Expanding the Company’s Robust Mobile Protection Platform

Camarillo, California - February 05, 2015

Semtech Corp(Nasdaq: SMTC), a leading supplier of analog and mixed-signal semiconductors, today announced the RClamp1255P, a high-performance, low capacitance transient voltage suppression (TVS) device. The RClamp1255P is a highly integrated device that replaces multiple discrete components while providing complete VBUS surge protection, and ESD protection for USB data lines and ID line.   

Built on Semtech’s highly differentiated process technologies that achieve the industry’s lowest clamping voltages, the RClamp1255P delivers optimal transient protection and is housed in a 2.0 x 1.8 mm package with a height of only 0.57mm.  The small size, low capacitance, and high level of surge and ESD protection makes the RClamp1255P an ideal solution for protecting USB interfaces in mobile phones, laptops and portable electronics.  

“With increasing consumption of 4G data, consumers demand reliable solutions that enable them to stay connected to mobile networks. Robust ESD protection is more important to portable electronics manufacturers than ever before,” said Rick Hansen, Product Marketing Director for Semtech’s Protection Products.  “The RClamp1255P expands Semtech’s growing portable product family and offers fully integrated ESD and surge protection for USB 2.0 ports used on portable devices in a single easy to use package.”

Key Features of the RClamp1255P

  • Transient protection for USB VBUS to: IEC 61000-4-2 (ESD) ±30kV (air), ±30kV (contact); IEC 61000-4-4 (EFT) 40A (5/50ns); IEC 61000-4-5 (Lightning) 100A (8/20μs)
  • Protects USB VBUS operating up to 12V
  • ESD protection for high-speed USB 2.0 data lines to: IEC 61000-4-2 (ESD) ±15 (air), ±10kV (contact)
  • Protects USB D+, D- and ID pins operating up to +/- 4V.
  • Low capacitance  <0.5pF on D+, D- and ID pins 
  • Small 6-lead 2.0mm x 1.8mm package with nominal height of 0.57 mm
  • Pb Free and RoHS/WEEE compliant

Pricing and Availability 

The RClamp1255P (order code: RClamp1255P.TGT) is available immediately in production quantities and is priced at $0.33 each in 3,000-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

Press Contact

Ronda Grech, Public Relations, Telephone: (805) 480-2193

  • 2016
    99 Announcements
  • 2015
    56 Announcements
  • 2014
    25 Announcements
  • 2013
    18 Announcements
  • 2012
    20 Announcements