POLYFUSE® Resettable PTCs
Surface Mount
Electrical Characteristics (continued)
Maximum Time
P d
Agency
Approvals
Resistance
To Trip
I hold
(A)
I trip
(A)
V max
(Vdc)
I max
(A)
Part Number
Marking
max.
R min
(Ω)
R typ
(Ω)
R 1max
(Ω)
Current
Time
(W)
(A)
(Sec.)
1812L160/12
1812L200-C
1812L260-C
LF160-12 1.60
2.80
3.50
5.00
12
8
100
100
100
0.8
0.8
0.8
8.00
8.00
8.00
1.00
2.00
2.50
0.030
0.020
0.015
0.066
0.040
0.030
0.100
0.060
0.047
X
X
X
X
X
X
LF200
LF260
2.00
2.60
6
I hold = Hold current: maximum current device will pass without tripping in 20°C still air.
I trip = Trip current: minimum current at which the device will trip in 20°C still air.
V max = Maximum voltage device can withstand without damage at rated current (I max)
R typ = Typical resistance of device in initial (un-soldered) state.
R 1max = Maximum resistance of device at 20°C measured one hour after tripping or reflow
soldering of 260°C for 20 sec.
Caution: Operation beyond the specified rating may result in damage and possible arcing
and flame.
I max = Maximum fault current device can withstand without damage at rated voltage (Vmax
P d = Power dissipated from device when in the tripped state at 20°C still air.
R min = Minimum resistance of device in initial (un-soldered) state.
)
Temperature Rerating
Ambient Operation Temperature
-40°C
-20°C
0°C
23°C
40°C
50°C
60°C
70°C
85°C
Part Number
Hold Current (A)
1812L010
0.16
0.23
0.29
0.77
1.15
1.06
1.10
1.59
1.58
1.55
2.00
2.00
2.06
2.04
2.05
2.20
2.18
3.08
4.00
0.14
0.19
0.26
0.68
1.01
0.95
1.00
1.43
1.43
1.40
1.75
1.75
1.93
1.88
1.87
2.06
2.01
2.71
3.52
0.12
0.17
0.23
0.59
0.88
0.84
0.88
1.26
1.27
1.25
1.52
1.52
1.79
1.68
1.67
1.91
1.79
2.35
3.06
0.10
0.14
0.20
0.50
0.75
0.75
0.75
1.10
1.10
1.10
1.25
1.25
1.50
1.50
1.50
1.60
1.60
2.00
2.60
0.08
0.12
0.17
0.44
0.65
0.60
0.66
0.95
0.95
0.93
1.00
1.00
1.28
1.25
1.25
1.36
1.34
1.80
2.34
0.07
0.10
0.15
0.40
0.60
0.55
0.60
0.87
0.85
0.83
0.95
0.95
1.10
1.10
1.08
1.17
1.16
1.60
2.08
0.06
0.09
0.14
0.37
0.55
0.50
0.56
0.80
0.77
.073
0.90
0.90
1.02
1.00
0.95
1.09
1.07
1.50
1.95
0.05
0.08
0.12
0.33
0.49
0.45
0.47
0.71
0.71
.063
0.75
0.75
0.80
0.80
0.77
0.85
0.83
1.07
1.39
0.03
0.06
0.10
0.29
0.43
0.37
0.36
0.60
0.58
.050
0.53
0.53
0.68
0.60
0.60
0.72
0.60
0.80
1.04
1812L014
1812L020
1812L050-C
1812L075-C
1812L075/24
1812L075/33
1812L110-C
1812L110/16
1812L110/33
1812L125-C
1812L125/6
1812L150-C
1812L150/12
1812L150/24
1812L160-C
1812L160/12
1812L200-C
1812L260-C
2
1812L Series
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©2006 Littelfuse
Electronics Designers Guide
Specifications are subject to change without notice.