250R145 - 250R Series

Series: 250R
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Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

The 250R Series is designed to protect against short duration high voltage fault currents (power cross or power induction surge) typically found in telecom applications (250Vrms). The series can be used to help telecom networking equipment meet the protection requirements specified in ITU K.20 and K.21.

  • 0.08 – 0.18 hold current range, 60VDC operating voltage
  • 250VAC interrupt rating
  • Fast time–to-trip
  • Binned and sorted narrow resistance ranges available
  • RoHS-compliant, Lead-Free and Halogen-Free*
  • Customer Premises Equipment (CPE)
  • Central Office (CO)/ telecom centers
  • LAN/WAN equipment
  • Access equipment
Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s) IPC-Material Declaration
250R145U PTC 60V/250V POLYFUSE TELECOM .145A RoHS No 07/07/2006 PbFree No 07/07/2006 Yes
250R145ZR PTC 60V/250V POLYFUSE TELECOM .145A RoHS No 07/07/2006 PbFree No 07/07/2006 CoC_RoHS10_250R145ZR REACH197_Declaration_250R145ZR Yes
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