250R Series - 250V POLYFUSE® Lead-Free Radial Leaded Resettable PPTC for Telecom Protection

Littelfuse_250R
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.

Features:
  • RoHS compliant and lead-free
  • Fast time-to-trip
  • Binned and sorted narrow resistance ranges available
  • 0.08 — 0.18 Hold current range, 60VDC operating voltage
  • 250VAC interrupt rating

Access specifications, certifications, check availability and order parts below

Catalog #IHold (A)ITRIP
(A)
Max Volts
(V)
IMAX
(A)
PDMAX
(W)
RMIN
(Ω)
R1max
(Ω)
Max
Time
To
Trip
(A)
Max
Time
to
Trip Time
(Sec)
Temp
(deg C)
StockSamplesCompare
250R0800.080.162503114330.354-40¦C - + 85¦CCheckOrder
250R080T0.080.162503115330.354-40¦C - + 85¦CCheckOrder
250R1200.120.242503141612.5-40¦C - + 85¦CCheckOrder
250R120-R10.120.242503161612.5-40¦C - + 85¦CCheck
250R120-R20.120.242503181612.5-40¦C - + 85¦CCheck
250R120-R30.120.242503181612.5-40¦C - + 85¦CCheck
250R120-RA0.120.242503171612.5-40¦C - + 85¦CCheckOrder
250R120-RC0.120.24250315.41413-40¦C - + 85¦CCheckOrder
250R120-RF0.120.242503161612.5-40¦C - + 85¦CCheck
250R120T0.120.242503171612.5-40¦C - + 85¦CCheckOrder
250R1450.1450.292503131412.5-40¦C - + 85¦CCheckOrder
250R145-RA0.1450.292503131212.5-40¦C - + 85¦CCheckOrder
250R145-RB0.1450.29250314.51412.5-40¦C - + 85¦CCheck
250R145T0.1450.29250315.41412.5-40¦C - + 85¦CCheckOrder
250R1800.180.65250101.80.84120-40¦C - + 85¦CCheckOrder
250R180T0.180.65250101.81.44.5121-40¦C - + 85¦CCheckOrder

pdf icon Resettable PTC 250R Datasheet

The 250R Series is designed to protect against short duration high voltage fault currents typically found in telecom applications...

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...