POLY-FUSE
®
Resettable PTCs
Surface Mount > 1812L Series
1812L Series
Description
RoHS
The 1812L Series PTC provides surface mount overcurrent
protection for applications where resettable protection is
desired.
Features
• RoHS compliant, lead-free
and halogen-free
• Fast response
• Compact design
Agency Approvals
AGENCY
AGENCY FILE NUMBER
E183209
R50119118
• Low resistance
• Low-profile
• Compatible with high
temperature solders
Applications
• Plug and play protection
for motherboards and
peripherals
• USB peripherals
• PCI cards
• Game console port
protection
Electrical Characteristics
Part Number
1812L010
1812L010/60
1812L014
1812L020
1812L020/60
1812L035/30
1812L050
1
1812L050/30
1812L075
1
1812L075/24
1812L075/33
1812L110
1
1812L110/16
1812L110/24
1812L110/33
1812L125/6
1812L125
/16
1812L150
1
1812L150/12
1812L150/24
1812L160
1
1812L160/12
1812L200TH
1
Marking
LF010
LF010-60
LF014
LF020
LF020-60
LF035-30
LF050
LF050-30
LF075
LF075-24
LF075-33
LF110
LF110-16
LF110-24
LF110-33
LF125-6
LF125
LF150
LF150-12
LF150-24
LF160
LF160-12
LF200
I
hold
(A)
0.10
0.10
0.14
0.20
0.20
0.35
0.50
0.50
0.75
0.75
0.75
1.10
1.10
1.10
1.10
1.25
1.25
1.50
1.50
1.50
1.60
1.60
2.00
I
trip
(A)
0.30
0.30
0.34
0.40
0.40
0.75
1.00
1.00
1.50
1.50
1.50
2.20
1.95
1.95
1.95
2.50
2.50
3.00
3.00
3.00
2.80
2.80
3.50
V
max
(Vdc)
30
60
60
30
60
30
15
30
13.2
24
33
8
16
24
33
6
16
8
12
24
8
12
8
I
max
(A)
100
10
10
100
40
100
100
100
100
100
20
100
100
20
20
100
100
100
100
20
100
100
100
P
d
typ.
(W)
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
Max. Time To Trip
Current
(A)
Time
(Sec.)
Resistance
R
min
(Ω)
R
1max
(Ω)
Agency Approvals
0.50
0.50
1.50
8.00
1.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
1.50
1.50
0.15
0.02
2.00
0.15
0.15
0.15
0.20
0.20
0.20
0.30
0.30
0.50
0.50
0.40
0.40
0.30
0.50
1.50
1.00
1.00
2.00
1.600
1.600
1.500
0.800
1.400
0.400
0.150
0.150
0.100
0.110
0.110
0.040
0.060
0.060
0.060
0.050
0.050
0.040
0.040
0.040
0.030
0.030
0.020
15.000
15.000
6.000
5.000
4.400
1.700
1.000
1.000
0.450
0.290
0.400
0.210
0.180
0.200
0.200
0.140
0.140
0.110
0.110
0.120
0.100
0.100
0.070
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
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.
continues on next page.
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.
© 2014 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 04/01/14
LITTELFUSE [ LITTELFUSE ]
