tꢀ
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1MVHꢀBOEꢀQMBZꢀQSPUFDUJPOꢀ
for motherboards and
peripherals
1$*ꢀDBSET
(BNFꢀDPOTPMFꢀQPSUꢀ
protection
tꢀ
64#ꢀQFSJQIFSBMT
V
3ꢀ1maxꢀꢃꢀ
.BYJNVNꢀSFTJTUBODFꢀPGꢀEFWJDFꢀBUꢀꢅꢆ¡$ꢀNFBTVSFEꢀPOFꢀIPVSꢀBGUFSꢀUSJQQJOHꢀPSꢀSFnPXꢀ
TPMEFSJOHꢀPGꢀꢅꢊꢆ¡$ꢀGPSꢀꢅꢆꢀTFDꢇ
®
POLY-FUSE Resettable PTCs
Surface Mount > 1812L Series
1812L Series
Description
The 1812L Series PTC provides surface mount overcurrent
protection for applications where resettable protection is
desired.
Features
tꢀ
3P)4ꢀDPNQMJBOUꢁꢀMFBEꢂGSFFꢀ tꢀ
-PXꢀSFTJTUBODF
-PXꢂQSPmMF
$PNQBUJCMFꢀXJUIꢀIJHIꢀ
BOEꢀIBMPHFOꢂGSFF
tꢀ
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tꢀ
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'BTUꢀSFTQPOTF
$PNQBDUꢀEFTJHO
temperature solders
Applications
Agency Approvals
AGENCY
AGENCY FILE NUMBER
E183209
R50119118
Electrical Characteristics
P d
typ.
(W)
Max.TimeToTrip
Resistance
Agency Approvals
I hold
(A)
I trip
(A)
V max
(Vdc)
I max
(A)
Part Number
Marking
Current
(A)
Time
(Sec.)
R min
R 1max
(Ω)
(Ω)
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
X
X
X
X
X
X
X
X
1812L010
1812L010/60
1812L014
LF010
LF010-60
LF014
LF020
LF020-60 0.20
LF035-30 0.35
LF050
LF050-30 0.50
LF075 0.75
LF075-24 0.75
LF075-33 0.75
LF110
LF110-16
LF110-24
LF110-33
LF125-6
LF125
0.10
0.10
0.14
0.20
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
3.50
5.00
5.00
5.00
30
60
60
30
60
30
15
30
13.2
24
33
8
16
24
33
6
16
8
12
24
8
12
8
12
8
12
6
100
10
10
100
40
100
100
100
100
100
20
100
100
20
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
1.0
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
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
2.00
2.50
5.00
4.00
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
0.020
0.015
0.015
0.012
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
0.070
0.047
0.055
0.040
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
1812L200/12
1812L260TH 1
1812L260/12
1812L300
0.50
1.10
1.10
1.10
1.10
1.25
1.25
1.50
1.50
1.50
1.60
1.60
2.00
20
100
100
100
100
20
100
100
100
100
100
100
100
LF150
LF150-12
LF150-24
LF160
LF160-12
LF200
LF200-12 2.00
LF260 2.60
LF260-12 2.60
LF300 3.00
0.8
0.8
0.8
*
holdꢀꢃꢀ)PMEꢀDVSSFOUꢄꢀNBYJNVNꢀDVSSFOUꢀEFWJDFꢀXJMMꢀQBTTꢀXJUIPVUꢀUSJQQJOHꢀJOꢀꢅꢆ¡$ꢀTUJMMꢀBJSꢇꢀ
*ꢀtripꢀꢃꢀ5SJQꢀDVSSFOUꢄꢀNJOJNVNꢀDVSSFOUꢀBUꢀXIJDIꢀUIFꢀEFWJDFꢀXJMMꢀUSJQꢀJOꢀꢅꢆ¡$ꢀTUJMMꢀBJSꢇ
maxꢀꢃꢀ.BYJNVNꢀWPMUBHFꢀEFWJDFꢀDBOꢀXJUITUBOEꢀXJUIPVUꢀEBNBHFꢀBUꢀSBUFEꢀDVSSFOUꢀꢈ*ꢀNBYꢉꢀ
*ꢀmaxꢀꢃꢀ.BYJNVNꢀGBVMUꢀDVSSFOUꢀEFWJDFꢀDBOꢀXJUITUBOEꢀXJUIPVUꢀEBNBHFꢀBUꢀSBUFEꢀWPMUBHFꢀꢈ7max
dꢀꢃꢀ1PXFSꢀEJTTJQBUFEꢀGSPNꢀEFWJDFꢀXIFOꢀJOꢀUIFꢀUSJQQFEꢀTUBUFꢀBUꢀꢅꢆ¡$ꢀTUJMMꢀBJSꢇ
Caution:ꢀ0QFSBUJPOꢀCFZPOEꢀUIFꢀTQFDJmFEꢀSBUJOHꢀNBZꢀSFTVMUꢀJOꢀEBNBHFꢀBOEꢀQPTTJCMFꢀBSDJOHꢀBOEꢀnBNFꢇ
3ꢀminꢀꢃꢀ.JOJNVNꢀSFTJTUBODFꢀPGꢀEFWJDFꢀJOꢀJOJUJBMꢀꢈVOꢂTPMEFSFEꢉꢀTUBUFꢇ
3ꢀUZQꢀꢃꢀ5ZQJDBMꢀSFTJTUBODFꢀPGꢀEFWJDFꢀJOꢀJOJUJBMꢀꢈVOꢂTPMEFSFEꢉꢀTUBUFꢇ
ꢉ
P
1ꢀ4PNFꢀPMEFSꢀSFGFSFODFTꢀUPꢀUIFTFꢀEFWJDFTꢀNBZꢀJODMVEFꢀi–CiꢀJOꢀUIFꢀ1BSUꢀ/VNCFSꢇꢀ5IFꢀi–CiꢀTIPVMEꢀCFꢀPNJUUFEꢀXIFOꢀQMBDJOHꢀOFXꢀPSEFSTꢀGPSꢀUIFꢀEFWJDFꢇꢀ
39
© 2012 Littelfuse, Inc
1812L Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/1812L.html for current information.
Revised: June 3, 2012
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