Low Capacitance RClamp® Surge Protection for uUSB Interfaces

Topology: Other


RailClamp® TVS arrays are low capacitance ESD protection devices designed to protect high speed data interfaces. The RClamp®1255P provides dedicatedsurge and ESD protection for uUSB ports. It is designed to replace multiple discrete components in portable applications. This device features low capacitance TVS diodes for protection of the USB data (DP, DM) and USB ID pins operating up to +/- 4 volts.These diodes provide ESD protection to ±10kV contact discharge per IEC 61000-4-2. Loading capacitance on these lines is <0.50pF. An integrated 12 volt TVS diode is used for protection of the USB voltage bus.The VBus TVS is designed with a high surge current capability of 100A (tp=8/20us) and low clamping voltage.The RClamp1255P is in a 6-pin SLP2018P6 package. It measures 2.0 x 1.8mm with a nominal height of 0.57mm. This highly integrated device requires less board spacethan existing solutions.The combination of small size, low capacitance, and high level of surge and ESD protection makes this device a flexible solution for protection of USB interfaces in mobilephones, laptops, and other portable electonics.


  • ESD and surge protection for USB Voltage Bus to
  • IEC 61000-4-2 (ESD) ±30kV (air), ±30kV (contact)
  • IEC 61000-4-5 (Lightning) 100A (8/20μs)
  • IEC 61000-4-4 (EFT) 40A (5/50ns)
  • ESD protection for USB data lines to
  • IEC 61000-4-2 (ESD) ±15kV (air), ±10kV (contact)
  • Protects USB DP, DM, and ID Pins operating up to
  • +/- 4V
  • Protects USB VBus operating up to 12V
  • Low capacitance (<0.50pF) on DP, DM, and ID Pins
  • Low clamping voltage
  • Low dynamic resistance on DP, DM, and ID Pins
  • Solid-state silicon-avalanche technology


  Order Code SPEC Product series H
Actuator-Farbe VPE C
Tol. C VR
(V (DC))
Bauform DF
Keramiktyp Technische Artikelnummer Betriebstemperatur RISO
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885012205018 PDF WCAP-CSGP MLCCs 10 V(DC) 0.5 100 ±10% 10 0402 5 X7R Class II X7R0402104K010DFCT10000 -55 °C up to +125 °C 5
885012107010 PDF WCAP-CSGP MLCCs 10 V(DC) 1.25 10 ±20% 10 0805 10 X5R Class II X5R0805106M010DFCT10000