®
POLY-FUSE Resettable PTCs
Surface Mount > 1812L Series
Temperature Rerating
Ambient OperationTemperature
ꢂꢋꢆ¡$
ꢂꢅꢆ¡$
ꢆ¡$
ꢅꢆ¡$
ꢋꢆ¡$
ꢌꢆ¡$
ꢊꢆ¡$
ꢍꢆ¡$
ꢎꢌ¡$
Part Number
Hold Current (A)
1812L010
1812L010/60
1812L014
0.16
0.14
0.23
0.29
0.30
0.50
0.77
0.77
1.15
1.06
1.10
1.59
1.58
1.55
1.55
2.00
2.00
2.06
2.04
2.05
2.20
2.20
2.60
2.82
3.40
3.40
4.13
0.14
0.13
0.19
0.26
0.27
0.45
0.68
0.68
1.01
0.95
1.00
1.43
1.43
1.40
1.40
1.75
1.75
1.93
1.88
1.87
2.06
2.06
2.44
2.60
3.16
3.16
3.75
0.12
0.11
0.17
0.23
0.23
0.40
0.59
0.59
0.88
0.84
0.88
1.26
1.27
1.25
1.25
1.52
1.52
1.79
1.68
1.67
1.91
1.91
2.22
2.36
3.00
3.00
3.30
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
2.00
2.60
2.60
3.00
0.08
0.09
0.12
0.17
0.17
0.30
0.44
0.44
0.65
0.60
0.66
0.95
0.95
0.93
0.93
1.00
1.00
1.28
1.25
1.25
1.36
1.36
ꢏꢁꢍꢎ
1.74
0.07
0.08
0.10
0.15
0.14
0.26
0.40
0.40
0.60
0.55
0.60
0.87
0.85
0.83
0.83
0.95
0.95
1.10
1.10
1.08
1.17
1.17
1.67
1.44
2.15
2.15
2.43
0.06
0.07
0.09
0.14
0.13
0.24
0.37
0.37
0.55
0.50
0.56
0.80
0.77
0.73
0.73
0.90
0.90
1.02
1.00
0.95
1.09
1.09
1.50
1.40
2.00
2.00
2.25
0.05
0.07
0.08
0.12
0.11
0.20
0.33
0.33
0.49
0.45
0.47
0.71
0.71
0.63
0.63
0.75
0.75
0.80
0.80
0.77
0.85
0.85
1.45
1.20
1.85
1.85
2.00
0.03
0.05
0.06
0.10
0.08
0.16
0.29
0.29
0.43
0.37
0.36
0.60
0.58
0.50
0.50
0.53
0.53
0.68
0.60
0.60
0.72
0.72
1.29
1.00
1.63
1.63
1.78
1812L020
1812L020/60
1812L035/30
1812L050
1812L050/30
1812L075
1812L075/24
1812L075/33
1812L110
1812L110/16
1812L110/24
1812L110/33
1812L125/6
1812L125/16
1812L150
1812L150/12
1812L150/24
1812L160
1812L160/12
1812L200TH
1812L200/12
1812L260TH
1812L260/12
1812L300
2.30
2.30
2.61
Temperature Rerating Curve
Physical Specifications
4PMEFSꢂ1MBUFEꢀ$PQQFSꢀꢈ4PMEFSꢀ.BUFSJBMꢄꢀ
.BUUFꢀ5JOꢀꢈ4Oꢉꢉ
Terminal Material
Lead Solderability
170%
150%
130%
.FFUTꢀ&*"ꢀ4QFDJmDBUJPOꢀ34ꢏꢎꢊꢂꢔ&ꢁꢀ"/4*ꢑ
+ꢂ45%ꢂꢆꢆꢅꢀ$BUFHPSZꢀꢓꢇ
110%
90%
70%
Environmental Specifications
Operating/StorageTemp.
ꢂꢋꢆ¡$ꢀUPꢀꢐꢎꢌ¡$
Max. Device SurfaceTemp.
inTripped State
ꢏꢅꢌ¡$
50%
30%
10%
ꢐꢎꢌ¡$ꢁꢀꢏꢆꢆꢆꢀIPVST
ꢂꢑꢐꢌꢒꢀUZQJDBMꢀSFTJTUBODFꢀDIBOHF
Passive Aging
ꢐꢎꢌ¡$ꢁꢀꢎꢌꢒꢀꢀ3ꢇ)ꢇꢁꢏꢆꢆꢆꢀIPVST
ꢂꢑꢐꢌꢒꢀUZQJDBMꢀSFTJTUBODFꢀDIBOHF
-40 -30 -20 -10
0
10
20 30
Temperature (°C)
40 50 60 70 80 85
Humidity Aging
.*-o45%oꢅꢆꢅꢁꢀ.FUIPEꢀꢏꢆꢍ(
ꢐꢎꢌ¡$ꢑꢂꢋꢆ¡$ꢀꢅꢆꢀUJNFT
Thermal Shock
ꢂꢓꢆꢒꢀUZQJDBMꢀSFTJTUBODFꢀDIBOHF
.*-o45%oꢅꢆꢅꢁꢀ.FUIPEꢀꢅꢏꢌꢁ
/PꢀDIBOHF
Solvent Resistance
.*-o45%oꢎꢎꢓ$ꢁꢀ.FUIPEꢀꢅꢆꢆ ꢇꢏꢁꢀ
$POEJUJPOꢀ"ꢁꢀ/PꢀDIBOHF
Vibration
Moisture Level Sesitivity
-FWFMꢀꢏꢁꢀ+o45%oꢆꢅꢆ$
40
© 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