LoRho SMD Series - PolySwitch Packaged PPTC for Charging Cable Protection

Series: LoRho SMD
Roll Over to Zoom

The Littelfuse LoRho SMD PTC for Charging Cables provides protection from heat generated due to faults within the connector such as USB-C, microUSB, and many others. As connectors get smaller, their pin-to-pin spacings are shrinking which increases the opportunity for debris such as dust, dirt, or water to collect causing a fault.  These faults can generate a tremendous amount of heat which will damage charging cables, the devices they charge, or people using them.


  • SMD compatible with reflow soldering process
  • Available in small 1206 and 1210 sizes
  • Up to 21Vdc and 4.5A Ihold
  • Ultra-low internal resistance
  • Reset automatically


  • Overtemperature (OT) protection for USB connectors and cables including USB Type-C, USB Micro-B and USB-A
  • Fast charging standards and protocols

Access specifications, certifications, check availability and order parts below

Catalog #IHold (A)ITRIP
Max Volts
Trip Time
400CC1206LR-C421510.0040.011206Product SpecificationCheckOrder
450CC1210LR-C4.52151.30.0020.0081210Product SpecificationCheckOrder
microSMD450LR-C-24.59121010.0020.01201210Product SpecificationCheckOrder
nanoSMD350LR-C-23.56.312910.0040.01851206Product SpecificationCheckOrder
nanoSMD400LR-C-24812910.0040.0121206Product SpecificationCheckOrder

pdf icon Resettable PTC LoRho Datasheet

Littelfuse LoRho™ Surface Mount PPTC (Polymer Positive Temperature Coefficient) devices provide overcurrent protection for applications where ultra low internal resistance...

Littelfuse_Taiwan_Concord_ISO14001icon TaiwanConcord ISO 14001

Littelfuse_Taiwan_Concord_ISOTS16949icon TaiwanConcord ISOTS 16949

pdf icon Product Selection Guide

Electronics Circuit Protection Product Selection Guide - A guide to selecting Littelfuse circuit protection components for electronic applications...

pdf icon Circuit Protection Technology Application Matrix

Littelfuse is the world leader in the design and manufacturing of fuses for the automotive, industrial, handheld, computer and telecom markets...