Surface Mount PTCs

1812L

  • Electrical Characteristics
    • Catalog # 1812L010
    • IHold (A) 0.1
    • ITRIP
      (A)
      0.3
    • Max Volts
      (V)
      30
    • IMAX
      (A)
      100
    • PDMAX
      (W)
      0.8
    • RMIN
      (Ω)
      1.6
    • R1max
      (Ω)
      15
    • Max
      Time
      To
      Trip
      (A)
      0.5
    • Max
      Time
      to
      Trip Time
      (Sec)
      1.5
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • Size 1812 (4532)
    • RTYP
      (Ω)
      7
    • Mounting Surface Mount
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 1812L010/60
    • IHold (A) 0.1
    • ITRIP
      (A)
      0.3
    • Max Volts
      (V)
      60
    • IMAX
      (A)
      10
    • PDMAX
      (W)
      0.8
    • RMIN
      (Ω)
      1.6
    • R1max
      (Ω)
      15
    • Max
      Time
      To
      Trip
      (A)
      0.5
    • Max
      Time
      to
      Trip Time
      (Sec)
      1.5
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • Size 1812 (4532)
    • Mounting Surface Mount
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 1812L014
    • IHold (A) 0.14
    • ITRIP
      (A)
      0.34
    • Max Volts
      (V)
      60
    • IMAX
      (A)
      10
    • PDMAX
      (W)
      0.8
    • RMIN
      (Ω)
      1.5
    • R1max
      (Ω)
      6
    • Max
      Time
      To
      Trip
      (A)
      1.5
    • Max
      Time
      to
      Trip Time
      (Sec)
      0.15
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • Size 1812 (4532)
    • RTYP
      (Ω)
      4
    • Mounting Surface Mount
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 1812L020
    • IHold (A) 0.2
    • ITRIP
      (A)
      0.4
    • Max Volts
      (V)
      30
    • IMAX
      (A)
      100
    • PDMAX
      (W)
      0.8
    • RMIN
      (Ω)
      0.8
    • R1max
      (Ω)
      5
    • Max
      Time
      To
      Trip
      (A)
      8
    • Max
      Time
      to
      Trip Time
      (Sec)
      0.02
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • Size 1812 (4532)
    • RTYP
      (Ω)
      2.9
    • Mounting Surface Mount
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 1812L020/60
    • IHold (A) 0.2
    • ITRIP
      (A)
      0.4
    • Max Volts
      (V)
      60
    • IMAX
      (A)
      40
    • PDMAX
      (W)
      0.8
    • RMIN
      (Ω)
      1.4
    • R1max
      (Ω)
      4.4
    • Max
      Time
      To
      Trip
      (A)
      1
    • Max
      Time
      to
      Trip Time
      (Sec)
      2
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • Size 1812 (4532)
    • Mounting Surface Mount
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 1812L035/30
    • IHold (A) 0.35
    • ITRIP
      (A)
      0.75
    • Max Volts
      (V)
      30
    • IMAX
      (A)
      40
    • PDMAX
      (W)
      0.8
    • RMIN
      (Ω)
      0.4
    • R1max
      (Ω)
      1.7
    • Max
      Time
      To
      Trip
      (A)
      8
    • Max
      Time
      to
      Trip Time
      (Sec)
      0.15
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • Size 1812 (4532)
    • Mounting Surface Mount
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 1812L050
    • IHold (A) 0.5
    • ITRIP
      (A)
      1
    • Max Volts
      (V)
      15
    • IMAX
      (A)
      100
    • PDMAX
      (W)
      0.8
    • RMIN
      (Ω)
      0.15
    • R1max
      (Ω)
      1
    • Max
      Time
      To
      Trip
      (A)
      8
    • Max
      Time
      to
      Trip Time
      (Sec)
      0.15
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • Size 1812 (4532)
    • RTYP
      (Ω)
      0.6
    • Mounting Surface Mount
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 1812L050/30
    • IHold (A) 0.5
    • ITRIP
      (A)
      1
    • Max Volts
      (V)
      30
    • IMAX
      (A)
      100
    • PDMAX
      (W)
      0.8
    • RMIN
      (Ω)
      0.15
    • R1max
      (Ω)
      1
    • Max
      Time
      To
      Trip
      (A)
      8
    • Max
      Time
      to
      Trip Time
      (Sec)
      0.15
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • Size 1812 (4532)
    • Mounting Surface Mount
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 1812L050/60
    • IHold (A) 0.5
    • ITRIP
      (A)
      1
    • Max Volts
      (V)
      60
    • IMAX
      (A)
      100
    • PDMAX
      (W)
      1.5
    • RMIN
      (Ω)
      0.15
    • R1max
      (Ω)
      1
    • Max
      Time
      To
      Trip
      (A)
      8
    • Max
      Time
      to
      Trip Time
      (Sec)
      0.15
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • Size 1812 (4532)
    • Mounting Surface Mount
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 1812L075
    • IHold (A) 0.75
    • ITRIP
      (A)
      1.5
    • Max Volts
      (V)
      13.2
    • IMAX
      (A)
      100
    • PDMAX
      (W)
      0.8
    • RMIN
      (Ω)
      0.1
    • R1max
      (Ω)
      0.45
    • Max
      Time
      To
      Trip
      (A)
      8
    • Max
      Time
      to
      Trip Time
      (Sec)
      0.2
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • Size 1812 (4532)
    • RTYP
      (Ω)
      0.26
    • Mounting Surface Mount
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 1812L075/24
    • IHold (A) 0.75
    • ITRIP
      (A)
      1.5
    • Max Volts
      (V)
      24
    • IMAX
      (A)
      100
    • PDMAX
      (W)
      0.8
    • RMIN
      (Ω)
      0.11
    • R1max
      (Ω)
      0.29
    • Max
      Time
      To
      Trip
      (A)
      8
    • Max
      Time
      to
      Trip Time
      (Sec)
      0.2
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • Size 1812 (4532)
    • RTYP
      (Ω)
      0.2
    • Mounting Surface Mount
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 1812L075/33
    • IHold (A) 0.75
    • ITRIP
      (A)
      1.5
    • Max Volts
      (V)
      33
    • IMAX
      (A)
      100
    • PDMAX
      (W)
      0.8
    • RMIN
      (Ω)
      0.11
    • R1max
      (Ω)
      0.4
    • Max
      Time
      To
      Trip
      (A)
      8
    • Max
      Time
      to
      Trip Time
      (Sec)
      0.2
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • Size 1812 (4532)
    • RTYP
      (Ω)
      0.26
    • Mounting Surface Mount
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 1812L110
    • IHold (A) 1.1
    • ITRIP
      (A)
      2.2
    • Max Volts
      (V)
      8
    • IMAX
      (A)
      100
    • PDMAX
      (W)
      0.8
    • RMIN
      (Ω)
      0.04
    • R1max
      (Ω)
      0.21
    • Max
      Time
      To
      Trip
      (A)
      8
    • Max
      Time
      to
      Trip Time
      (Sec)
      0.3
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • Size 1812 (4532)
    • RTYP
      (Ω)
      0.12
    • Mounting Surface Mount
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 1812L110/16
    • IHold (A) 1.1
    • ITRIP
      (A)
      1.95
    • Max Volts
      (V)
      16
    • IMAX
      (A)
      100
    • PDMAX
      (W)
      0.8
    • RMIN
      (Ω)
      0.06
    • R1max
      (Ω)
      0.18
    • Max
      Time
      To
      Trip
      (A)
      8
    • Max
      Time
      to
      Trip Time
      (Sec)
      0.5
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • Size 1812 (4532)
    • RTYP
      (Ω)
      0.12
    • Mounting Surface Mount
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 1812L110/24
    • IHold (A) 1.1
    • ITRIP
      (A)
      1.95
    • Max Volts
      (V)
      24
    • IMAX
      (A)
      20
    • PDMAX
      (W)
      0.8
    • RMIN
      (Ω)
      0.06
    • R1max
      (Ω)
      0.2
    • Max
      Time
      To
      Trip
      (A)
      8
    • Max
      Time
      to
      Trip Time
      (Sec)
      0.5
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • Size 1812 (4532)
    • RTYP
      (Ω)
      0.12
    • Mounting Surface Mount
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 1812L110/33
    • IHold (A) 1.1
    • ITRIP
      (A)
      1.95
    • Max Volts
      (V)
      33
    • IMAX
      (A)
      20
    • PDMAX
      (W)
      0.8
    • RMIN
      (Ω)
      0.06
    • R1max
      (Ω)
      0.2
    • Max
      Time
      To
      Trip
      (A)
      8
    • Max
      Time
      to
      Trip Time
      (Sec)
      0.5
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • Size 1812 (4532)
    • RTYP
      (Ω)
      0.12
    • Mounting Surface Mount
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 1812L125
    • IHold (A) 1.25
    • ITRIP
      (A)
      2.5
    • Max Volts
      (V)
      16
    • IMAX
      (A)
      100
    • PDMAX
      (W)
      0.8
    • RMIN
      (Ω)
      0.05
    • R1max
      (Ω)
      0.14
    • Max
      Time
      To
      Trip
      (A)
      8
    • Max
      Time
      to
      Trip Time
      (Sec)
      0.4
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • Size 1812 (4532)
    • RTYP
      (Ω)
      0.09
    • Mounting Surface Mount
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 1812L125/16
    • IHold (A) 1.25
    • ITRIP
      (A)
      2.5
    • Max Volts
      (V)
      16
    • IMAX
      (A)
      100
    • PDMAX
      (W)
      0.8
    • RMIN
      (Ω)
      0.05
    • R1max
      (Ω)
      0.14
    • Max
      Time
      To
      Trip
      (A)
      8
    • Max
      Time
      to
      Trip Time
      (Sec)
      0.4
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • Size 1812 (4532)
    • Mounting Surface Mount
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 1812L125/6
    • IHold (A) 1.25
    • ITRIP
      (A)
      2.5
    • Max Volts
      (V)
      6
    • IMAX
      (A)
      100
    • PDMAX
      (W)
      0.8
    • RMIN
      (Ω)
      0.05
    • R1max
      (Ω)
      0.14
    • Max
      Time
      To
      Trip
      (A)
      8
    • Max
      Time
      to
      Trip Time
      (Sec)
      0.4
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • Size 1812 (4532)
    • RTYP
      (Ω)
      0.09
    • Mounting Surface Mount
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 1812L150
    • IHold (A) 1.25
    • ITRIP
      (A)
      3
    • Max Volts
      (V)
      8
    • IMAX
      (A)
      100
    • PDMAX
      (W)
      0.8
    • RMIN
      (Ω)
      0.04
    • R1max
      (Ω)
      0.11
    • Max
      Time
      To
      Trip
      (A)
      8
    • Max
      Time
      to
      Trip Time
      (Sec)
      0.3
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • Size 1812 (4532)
    • RTYP
      (Ω)
      0.07
    • Mounting Surface Mount
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 1812L150/12
    • IHold (A) 1.5
    • ITRIP
      (A)
      3
    • Max Volts
      (V)
      12
    • IMAX
      (A)
      100
    • PDMAX
      (W)
      0.8
    • RMIN
      (Ω)
      0.04
    • R1max
      (Ω)
      0.11
    • Max
      Time
      To
      Trip
      (A)
      8
    • Max
      Time
      to
      Trip Time
      (Sec)
      0.5
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • Size 1812 (4532)
    • RTYP
      (Ω)
      0.07
    • Mounting Surface Mount
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 1812L150/16
    • IHold (A) 1.5
    • ITRIP
      (A)
      3
    • Max Volts
      (V)
      16
    • IMAX
      (A)
      100
    • PDMAX
      (W)
      0.8
    • RMIN
      (Ω)
      0.04
    • R1max
      (Ω)
      0.11
    • Max
      Time
      To
      Trip
      (A)
      8
    • Max
      Time
      to
      Trip Time
      (Sec)
      0.5
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • Size 1812 (4532)
    • Mounting Surface Mount
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 1812L150/24
    • IHold (A) 1.5
    • ITRIP
      (A)
      3
    • Max Volts
      (V)
      24
    • IMAX
      (A)
      20
    • PDMAX
      (W)
      0.8
    • RMIN
      (Ω)
      0.04
    • R1max
      (Ω)
      0.12
    • Max
      Time
      To
      Trip
      (A)
      8
    • Max
      Time
      to
      Trip Time
      (Sec)
      1.5
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • Size 1812 (4532)
    • RTYP
      (Ω)
      0.07
    • Mounting Surface Mount
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 1812L160
    • IHold (A) 1.6
    • ITRIP
      (A)
      2.8
    • Max Volts
      (V)
      8
    • IMAX
      (A)
      100
    • PDMAX
      (W)
      0.8
    • RMIN
      (Ω)
      0.03
    • R1max
      (Ω)
      0.1
    • Max
      Time
      To
      Trip
      (A)
      8
    • Max
      Time
      to
      Trip Time
      (Sec)
      1
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • Size 1812 (4532)
    • RTYP
      (Ω)
      0.066
    • Mounting Surface Mount
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 1812L160/12
    • IHold (A) 1.6
    • ITRIP
      (A)
      2.8
    • Max Volts
      (V)
      12
    • IMAX
      (A)
      100
    • PDMAX
      (W)
      0.8
    • RMIN
      (Ω)
      0.03
    • R1max
      (Ω)
      0.1
    • Max
      Time
      To
      Trip
      (A)
      8
    • Max
      Time
      to
      Trip Time
      (Sec)
      1
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • Size 1812 (4532)
    • RTYP
      (Ω)
      0.066
    • Mounting Surface Mount
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 1812L200
    • IHold (A) 2
    • ITRIP
      (A)
      3.5
    • Max Volts
      (V)
      8
    • IMAX
      (A)
      100
    • PDMAX
      (W)
      0.8
    • RMIN
      (Ω)
      0.02
    • R1max
      (Ω)
      0.06
    • Max
      Time
      To
      Trip
      (A)
      8
    • Max
      Time
      to
      Trip Time
      (Sec)
      2
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • Size 1812 (4532)
    • RTYP
      (Ω)
      0.04
    • Mounting Surface Mount
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 1812L200/12
    • IHold (A) 2
    • ITRIP
      (A)
      3.5
    • Max Volts
      (V)
      12
    • IMAX
      (A)
      100
    • PDMAX
      (W)
      2
    • RMIN
      (Ω)
      0.02
    • R1max
      (Ω)
      0.07
    • Max
      Time
      To
      Trip
      (A)
      8
    • Max
      Time
      to
      Trip Time
      (Sec)
      2
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • Size 1812 (4532)
    • Mounting Surface Mount
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 1812L200/16
    • IHold (A) 2
    • ITRIP
      (A)
      3.5
    • Max Volts
      (V)
      16
    • IMAX
      (A)
      100
    • PDMAX
      (W)
      1
    • RMIN
      (Ω)
      0.02
    • R1max
      (Ω)
      0.07
    • Max
      Time
      To
      Trip
      (A)
      8
    • Max
      Time
      to
      Trip Time
      (Sec)
      2
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • Size 1812 (4532)
    • RTYP
      (Ω)
      0.04
    • Mounting Surface Mount
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 1812L200TH
    • IHold (A) 2
    • ITRIP
      (A)
      4
    • Max Volts
      (V)
      8
    • IMAX
      (A)
      100
    • PDMAX
      (W)
      0.8
    • RMIN
      (Ω)
      0.02
    • R1max
      (Ω)
      0.07
    • Max
      Time
      To
      Trip
      (A)
      8
    • Max
      Time
      to
      Trip Time
      (Sec)
      2
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • Size 1812 (4532)
    • Mounting Surface Mount
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 1812L260
    • IHold (A) 2.6
    • ITRIP
      (A)
      5
    • Max Volts
      (V)
      6
    • IMAX
      (A)
      100
    • PDMAX
      (W)
      0.8
    • RMIN
      (Ω)
      0.015
    • R1max
      (Ω)
      0.047
    • Max
      Time
      To
      Trip
      (A)
      8
    • Max
      Time
      to
      Trip Time
      (Sec)
      2.5
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • Size 1812 (4532)
    • RTYP
      (Ω)
      0.03
    • Mounting Surface Mount
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 1812L260/12
    • IHold (A) 2.6
    • ITRIP
      (A)
      5
    • Max Volts
      (V)
      12
    • IMAX
      (A)
      100
    • PDMAX
      (W)
      0.8
    • RMIN
      (Ω)
      0.015
    • R1max
      (Ω)
      0.055
    • Max
      Time
      To
      Trip
      (A)
      8
    • Max
      Time
      to
      Trip Time
      (Sec)
      5
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • Size 1812 (4532)
    • Mounting Surface Mount
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 1812L260/16
    • IHold (A) 2.6
    • ITRIP
      (A)
      5
    • Max Volts
      (V)
      16
    • IMAX
      (A)
      100
    • PDMAX
      (W)
      1.2
    • RMIN
      (Ω)
      0.015
    • R1max
      (Ω)
      0.05
    • Max
      Time
      To
      Trip
      (A)
      16
    • Max
      Time
      to
      Trip Time
      (Sec)
      5
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • Size 1812 (4532)
    • RTYP
      (Ω)
      0.03
    • Mounting Surface Mount
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 1812L260TH
    • IHold (A) 2.6
    • ITRIP
      (A)
      5
    • Max Volts
      (V)
      8
    • IMAX
      (A)
      100
    • PDMAX
      (W)
      0.8
    • RMIN
      (Ω)
      0.015
    • R1max
      (Ω)
      0.047
    • Max
      Time
      To
      Trip
      (A)
      8
    • Max
      Time
      to
      Trip Time
      (Sec)
      2.5
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • Size 1812 (4532)
    • RTYP
      (Ω)
      0.03
    • Mounting Surface Mount
    • Datasheet
    • Check Stock Order Sample
    • Catalog # 1812L300
    • IHold (A) 3
    • ITRIP
      (A)
      5
    • Max Volts
      (V)
      6
    • IMAX
      (A)
      100
    • PDMAX
      (W)
      0.8
    • RMIN
      (Ω)
      0.012
    • R1max
      (Ω)
      0.04
    • Max
      Time
      To
      Trip
      (A)
      8
    • Max
      Time
      to
      Trip Time
      (Sec)
      4
    • Temp
      (deg C)
      -40¦C - + 85¦C
    • Size 1812 (4532)
    • Mounting Surface Mount
    • Datasheet
    • Check Stock Order Sample
  • Technical Resources
    • Datacenter Selection Guide

      Today’s datacenters must handle the vastly higher volumes of data being produced by millions of mobile devices and the objects that make up the Internet of Things

    • Resettable PTC 1812L Datasheet

      The 1812L Series PTC provides surface mount overcurrent protection for applications where resettable protection is desired...

    • Automotive Electronics Circuit Protection Applications Matrix

      Littelfuse portfolio of AEC-Q101 (TVS Diodes and Diode Arrays) and AEC-Q200 (Varistors, Multi Layer Varistors and PPTCs) qualified components help to protect the growing number of electronic applications in modern vehicles.

    • EC611 Circuit Protection for Lithium Ion and Lithium Polymer Rechargeable Battery Applications

      This application note summarizes how the increased use of Lithium-Ion and Lithium Polymer battery packs in applications where user safety is critical, the implementation of secondary protection circuits will ensure an unsurpassed level of safety with minimal cost impact.

    • Why does USB 2.0 need Circuit Protection Application Note

      This application brief demonstrates how to ensure reliable and safe circuit operation of USB products, protection against voltage and current transients must be carefully considered. Due to the higher data rates of USB 2.0, attention to the electrical characteristics of protection solutions is required.

    • 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...