PolySwitch Telecom Resettable PTCs

250R

  • Electrical Characteristics
    • Catalog # 250R080
    • IHold (A) 0.08
    • ITRIP
      (A)
      0.16
    • Max Volts
      (V)
      250
    • IMAX
      (A)
      3
    • PDMAX
      (W)
      1
    • RMIN
      (Ω)
      14
    • R1max
      (Ω)
      33
    • Max
      Time
      To
      Trip
      (A)
      0.35
    • Max
      Time
      to
      Trip Time
      (Sec)
      4
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • RTYP
      (Ω)
      22
    • Mounting Through Hole
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 250R080T
    • IHold (A) 0.08
    • ITRIP
      (A)
      0.16
    • Max Volts
      (V)
      250
    • IMAX
      (A)
      3
    • PDMAX
      (W)
      1
    • RMIN
      (Ω)
      15
    • R1max
      (Ω)
      33
    • Max
      Time
      To
      Trip
      (A)
      0.35
    • Max
      Time
      to
      Trip Time
      (Sec)
      4
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • RTYP
      (Ω)
      22
    • Mounting Through Hole
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 250R120
    • IHold (A) 0.12
    • ITRIP
      (A)
      0.24
    • Max Volts
      (V)
      250
    • IMAX
      (A)
      3
    • PDMAX
      (W)
      1
    • RMIN
      (Ω)
      4
    • R1max
      (Ω)
      16
    • Max
      Time
      To
      Trip
      (A)
      1
    • Max
      Time
      to
      Trip Time
      (Sec)
      2.5
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • RTYP
      (Ω)
      8
    • Mounting Through Hole
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 250R120-R1
    • IHold (A) 0.12
    • ITRIP
      (A)
      0.24
    • Max Volts
      (V)
      250
    • IMAX
      (A)
      3
    • PDMAX
      (W)
      1
    • RMIN
      (Ω)
      6
    • R1max
      (Ω)
      16
    • Max
      Time
      To
      Trip
      (A)
      1
    • Max
      Time
      to
      Trip Time
      (Sec)
      2.5
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • RTYP
      (Ω)
      9
    • Mounting Through Hole
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 250R120-R2
    • IHold (A) 0.12
    • ITRIP
      (A)
      0.24
    • Max Volts
      (V)
      250
    • IMAX
      (A)
      3
    • PDMAX
      (W)
      1
    • RMIN
      (Ω)
      8
    • R1max
      (Ω)
      16
    • Max
      Time
      To
      Trip
      (A)
      1
    • Max
      Time
      to
      Trip Time
      (Sec)
      2.5
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • RTYP
      (Ω)
      10.5
    • Mounting Through Hole
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 250R120-R3
    • IHold (A) 0.12
    • ITRIP
      (A)
      0.24
    • Max Volts
      (V)
      250
    • IMAX
      (A)
      3
    • PDMAX
      (W)
      1
    • RMIN
      (Ω)
      8
    • R1max
      (Ω)
      16
    • Max
      Time
      To
      Trip
      (A)
      1
    • Max
      Time
      to
      Trip Time
      (Sec)
      2.5
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • RTYP
      (Ω)
      10
    • Mounting Through Hole
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 250R120-RA
    • IHold (A) 0.12
    • ITRIP
      (A)
      0.24
    • Max Volts
      (V)
      250
    • IMAX
      (A)
      3
    • PDMAX
      (W)
      1
    • RMIN
      (Ω)
      7
    • R1max
      (Ω)
      16
    • Max
      Time
      To
      Trip
      (A)
      1
    • Max
      Time
      to
      Trip Time
      (Sec)
      2.5
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • RTYP
      (Ω)
      9
    • Mounting Through Hole
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 250R120-RC
    • IHold (A) 0.12
    • ITRIP
      (A)
      0.24
    • Max Volts
      (V)
      250
    • IMAX
      (A)
      3
    • PDMAX
      (W)
      1
    • RMIN
      (Ω)
      5.4
    • R1max
      (Ω)
      14
    • Max
      Time
      To
      Trip
      (A)
      1
    • Max
      Time
      to
      Trip Time
      (Sec)
      3
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • RTYP
      (Ω)
      7.5
    • Mounting Through Hole
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 250R120-RF
    • IHold (A) 0.12
    • ITRIP
      (A)
      0.24
    • Max Volts
      (V)
      250
    • IMAX
      (A)
      3
    • PDMAX
      (W)
      1
    • RMIN
      (Ω)
      6
    • R1max
      (Ω)
      16
    • Max
      Time
      To
      Trip
      (A)
      1
    • Max
      Time
      to
      Trip Time
      (Sec)
      2.5
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • RTYP
      (Ω)
      10.5
    • Mounting Through Hole
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 250R120T
    • IHold (A) 0.12
    • ITRIP
      (A)
      0.24
    • Max Volts
      (V)
      250
    • IMAX
      (A)
      3
    • PDMAX
      (W)
      1
    • RMIN
      (Ω)
      7
    • R1max
      (Ω)
      16
    • Max
      Time
      To
      Trip
      (A)
      1
    • Max
      Time
      to
      Trip Time
      (Sec)
      2.5
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • RTYP
      (Ω)
      12
    • Mounting Through Hole
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 250R145
    • IHold (A) 0.145
    • ITRIP
      (A)
      0.29
    • Max Volts
      (V)
      250
    • IMAX
      (A)
      3
    • PDMAX
      (W)
      1
    • RMIN
      (Ω)
      3
    • R1max
      (Ω)
      14
    • Max
      Time
      To
      Trip
      (A)
      1
    • Max
      Time
      to
      Trip Time
      (Sec)
      2.5
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • RTYP
      (Ω)
      6
    • Mounting Through Hole
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 250R145-RA
    • IHold (A) 0.145
    • ITRIP
      (A)
      0.29
    • Max Volts
      (V)
      250
    • IMAX
      (A)
      3
    • PDMAX
      (W)
      1
    • RMIN
      (Ω)
      3
    • R1max
      (Ω)
      12
    • Max
      Time
      To
      Trip
      (A)
      1
    • Max
      Time
      to
      Trip Time
      (Sec)
      2.5
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • RTYP
      (Ω)
      5.5
    • Mounting Through Hole
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 250R145-RB
    • IHold (A) 0.145
    • ITRIP
      (A)
      0.29
    • Max Volts
      (V)
      250
    • IMAX
      (A)
      3
    • PDMAX
      (W)
      1
    • RMIN
      (Ω)
      4.5
    • R1max
      (Ω)
      14
    • Max
      Time
      To
      Trip
      (A)
      1
    • Max
      Time
      to
      Trip Time
      (Sec)
      2.5
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • RTYP
      (Ω)
      6
    • Mounting Through Hole
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 250R145T
    • IHold (A) 0.145
    • ITRIP
      (A)
      0.29
    • Max Volts
      (V)
      250
    • IMAX
      (A)
      3
    • PDMAX
      (W)
      1
    • RMIN
      (Ω)
      5.4
    • R1max
      (Ω)
      14
    • Max
      Time
      To
      Trip
      (A)
      1
    • Max
      Time
      to
      Trip Time
      (Sec)
      2.5
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • RTYP
      (Ω)
      7.5
    • Mounting Through Hole
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 250R180
    • IHold (A) 0.18
    • ITRIP
      (A)
      0.65
    • Max Volts
      (V)
      250
    • IMAX
      (A)
      10
    • PDMAX
      (W)
      1.8
    • RMIN
      (Ω)
      0.8
    • R1max
      (Ω)
      4
    • Max
      Time
      To
      Trip
      (A)
      1
    • Max
      Time
      to
      Trip Time
      (Sec)
      20
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • RTYP
      (Ω)
      2.2
    • Mounting Through Hole
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 250R180T
    • IHold (A) 0.18
    • ITRIP
      (A)
      0.65
    • Max Volts
      (V)
      250
    • IMAX
      (A)
      10
    • PDMAX
      (W)
      1.8
    • RMIN
      (Ω)
      1.4
    • R1max
      (Ω)
      4.5
    • Max
      Time
      To
      Trip
      (A)
      1
    • Max
      Time
      to
      Trip Time
      (Sec)
      21
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • RTYP
      (Ω)
      3.9
    • Mounting Through Hole
    • Datasheet
    • Check Stock Order Sample
  • Technical Resources
    • Resettable PTC 250R Datasheet

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

    • Product Selection Guide

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

    • 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...