Surface Mount PPTC for Telecom Protection

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Resettable PTCs Telecom TSM250 Series

Surface Mount Resettable PPTC for Telecom Protection
TSM250-130 series featured with two 250V Telecom PPTC assembling into single plastic housing with surface mount footprint, it provides tip and ring overcurrent protection and aids compliance with ITU-T K.20, K.21 and K.45 as well as Telcordia GR-1089 intra-building.


  • Two PPTCs in single plastic housing
  • Resistance matched
  • Very high voltage surge capabilities
  • Surface mount footprint
  • RoHS compliant


  • Reduce PCB area by 50%
  • Improve assembly efficiency
  • Tip and Ring resistance balance
  • Aids compliance with industry certification
  • Environment friendly



Used as a secondary overcurrent protection device in:

  • Customer Premise Equipment (CPE)
  • Central Office (CO)
  • Subscriber Line Interface Cards (SLIC)


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Littelfuse products are vital components in virtually every market that uses electrical energy, from consumer electronics to automobiles, commercial vehicles and industrial equipment. Our history of innovation, proven technical expertise and the industry’s broadest and deepest portfolio of circuit protection products enable us to provide objective, comprehensive solutions for each customer’s unique needs. We are also expanding into adjacent markets that complement our core business including power distribution centers for mining operations, generator controls and protection for marine applications, heavy-duty switches for commercial vehicles and electromechanical sensors used in the automotive industry.

Littelfuse is the preferred brand for leading manufacturers around the world, with more than 40 sales, manufacturing and engineering facilities and a global network of distribution channels.