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250S Series 250Volt Polyfuse® Resettable SMD PTCs


Littelfuse 250S series is ideal for protecting telecommunication and networking equipment


The Littelfuse 250S series is ideal for protecting telecommunication and networking equipment against lightning and power cross strikes. These devices are fully compatible with telecommunications standards and are offered in horizontal and vertical surface mount packages. The 250S series is lead-free, halogen-free, and RoHS compliant. Datasheet 250S Series Polyfuse High Voltage SMD
Features Applications
  • Low resistance
  • Compatible with telecom standards
  • Helps meet ITU K.20, K.21/Telcordia standards
  • Solder joint is able to be inspected easily
  • High voltage
  • Telecommunications
  • Networking
  • ISDN equipment
  • XSDN equipment

Digi-Key P/N Manufacturer P/N Description
F3520CT-ND 250S130DR PTC RESET 250/60V SMD 130MA
F3521CT-ND 250S130-RADR PTC RESET 250/60V SMD RA 130MA
F3522CT-ND 250S130-RBDR PTC RESET 250/60V SMD RB 130MA
F3523CT-ND 250S130-RCDR PTC RESET 250/60V SMD RC 130MA
F3778CT-ND 250S130VZR PTC RESET 250/60V VRT SMD 130MA