Poly-fuse, Resettable ptcs, Surface mount > 1812l series – Littelfuse 1812L Series User Manual
Page 2
POLY-FUSE
®
Resettable PTCs
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 11/05/13
Surface Mount > 1812L Series
Ambient Operation Temperature
-40°C
-20°C
0°C
20°C
40°C
50°C
60°C
70°C
85°C
Part Number
Hold Current (A)
1812L010
0.16
0.14
0.12
0.10
0.08
0.07
0.06
0.05
0.03
1812L010/60
0.14
0.13
0.11
0.10
0.09
0.08
0.07
0.07
0.05
1812L014
0.23
0.19
0.17
0.14
0.12
0.10
0.09
0.08
0.06
1812L020
0.29
0.26
0.23
0.20
0.17
0.15
0.14
0.12
0.10
1812L020/60
0.30
0.27
0.23
0.20
0.17
0.14
0.13
0.11
0.08
1812L035/30
0.50
0.45
0.40
0.35
0.30
0.26
0.24
0.20
0.16
1812L050
0.77
0.68
0.59
0.50
0.44
0.40
0.37
0.33
0.29
1812L050/30
0.77
0.68
0.59
0.50
0.44
0.40
0.37
0.33
0.29
1812L075
1.15
1.01
0.88
0.75
0.65
0.60
0.55
0.49
0.43
1812L075/24
1.06
0.95
0.84
0.75
0.60
0.55
0.50
0.45
0.37
1812L075/33
1.10
1.00
0.88
0.75
0.66
0.60
0.56
0.47
0.36
1812L110
1.59
1.43
1.26
1.10
0.95
0.87
0.80
0.71
0.60
1812L110/16
1.58
1.43
1.27
1.10
0.95
0.85
0.77
0.71
0.58
1812L110/24
1.55
1.40
1.25
1.10
0.93
0.83
0.73
0.63
0.50
1812L110/33
1.55
1.40
1.25
1.10
0.93
0.83
0.73
0.63
0.50
1812L125/6
2.00
1.75
1.52
1.25
1.00
0.95
0.90
0.75
0.53
1812L125/16
2.00
1.75
1.52
1.25
1.00
0.95
0.90
0.75
0.53
1812L150
2.06
1.93
1.79
1.50
1.28
1.10
1.02
0.80
0.68
1812L150/12
2.04
1.88
1.68
1.50
1.25
1.10
1.00
0.80
0.60
1812L150/24
2.05
1.87
1.67
1.50
1.25
1.08
0.95
0.77
0.60
1812L160
2.20
2.06
1.91
1.60
1.36
1.17
1.09
0.85
0.72
1812L160/12
2.20
2.06
1.91
1.60
1.36
1.17
1.09
0.85
0.72
1812L200TH
2.60
2.44
2.22
2.00
1,78
1.67
1.50
1.45
1.29
1812L200/12
2.80
2.60
2.36
2.00
1.72
1.56
1.40
1.20
1.04
1812L200/16
2.80
2.60
2.36
2.00
1.72
1.56
1.40
1.20
1.04
1812L260TH
3.40
3.16
3.00
2.60
2.30
2.15
2.00
1.85
1.63
1812L260/12
3.40
3.16
3.00
2.60
2.30
2.15
2.00
1.85
1.63
1812L260/16
3.66
3.30
2.96
2.60
2.23
2.06
1.89
1.61
1.30
1812L300
4.13
3.75
3.30
3.00
2.61
2.43
2.25
2.00
1.78
Temperature Rerating
Notes: The temperature rerating data is only for reference, please contact Littelfuse technical support for detail temperature rerating information.
Electrical Characteristics
Part Number
Marking
I
hold
(A)
I
trip
(A)
V
max
(Vdc)
I
max
(A)
P
d
typ.
(W)
Max. Time To Trip
Resistance
Agency Approvals
Current
(A)
Time
(Sec.)
R
min
(Ω)
R
1max
(Ω)
1812L200/12
LF200-12
2.00
3.50
12
100
1.0
8.00
2.00
0.020
0.070
X
X
1812L200/16
LF200-16
2.00
3.50
16
100
1.0
8.00
2.00
0.020
0.070
X
X
1812L260TH
1
LF260
2.60
5.00
8
100
0.8
8.00
2.50
0.015
0.047
X
X
1812L260/12
LF260-12
2.60
5.00
12
100
0.8
8.00
5.00
0.015
0.055
X
X
1812L260/16
LF260-16
2.60
5.00
16
100
1.2
8.00
5.00
0.015
0.050
X
X
1812L300
LF300
3.00
5.00
6
100
0.8
8.00
4.00
0.012
0.040
X
X
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)
I
max
= Maximum fault current device can withstand without damage at rated voltage (V
max
)
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.
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.
1 Some older references to these devices may include “–C“ in the Part Number. The “–C“ should be omitted when placing new orders for the device.