Surface Mount Devices

Part Number Information
Part #: Price/Availability:
SMD250F Buy Now
RF1342 Buy Now
RF36 Buy Now
RF13 Buy Now
RF14 Buy Now

PolySwitch surface-mount devices are an effective circuit protection method for computer, consumer, multimedia, portable and automotive electronics applications.

In an effort to reduce the size and cost of surface-mount devices, TE Circuit Protection introduced the miniSMD product series in 1995. Subsequently, we developed the microSMD, nanoSMD, picoSMD and femtoSMD family of products. The femtoSMD series reduced the device size to a 1608mm (0603 mils) footprint, which is one-twelfth the size of the popular miniSMD series.

Recent additions to the PolySwitch surface-mount series include 1.1A picoSMD 1210mm (0805 mils) and 0.35A femtoSMD 1608mm (0603 mils) devices.


  • RoHS compliant
  • Halogen free (refers to: Br≤900ppm, Cl≤900ppm, Br+Cl≤1500ppm)
  • Broadest range of resettable devices available in the industry
  • Current ratings from 0.05 to 3.1A
  • Voltage ratings from 6V computer and electronic applications to 60V telecom applications
  • Agency recognition: UL, CSA, TÜV
  • Small footprint
  • Fast time-to-trip
  • Low resistance


  • Computer
  • Portable electronics
  • Multimedia
  • Game machines
  • Telephony and broadband
  • Mobile phone
  • Automotive
  • Industrial controls
  • Battery