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POLYFUSE® Resettable PTCs
Surface Mount > Lo Rho Series
Lo Rho Surface Mount Series
Description
The Littelfuse Lo Rho Surface Mount PPTC (polymer
positive temperature coefficient) series offers ultra low
normal operating resistance while maintains the same
performance of existing Littelfuse PPTC products.
Available in 5 hold current ratings, all devices are TUV
and UL certified and possess a maximum fault current
rating of 40A.
Features
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at normal operating hold
current)
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board space
Agency Approvals
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AGENCY
AGENCY FILE NUMBER
E183209
currents
R50119118
Applications
Electrical Characteristics
MaximumTime
ToTrip
Agency
Approvals
Resistance
P d
max.
(W)
I hold
(A)
I trip
(A)
V max
(Vdc)
I max
(A)
Part Number
Marking
R min
R 1max
Current
(A)
Time
(Sec.)
(Ω)
(Ω)
X
X
X
X
X
X
X
X
X
X
X
X
0805L110SLYR
1206L110SLYR
1206L150SLYR
1210L200SLYR
ꢊꢋꢊꢅ-ꢌꢈꢅ4 ꢃ4:3
1812L190SLPR
ꢃ)
ꢃ)
1.10
1.10
1.50
2.00
3.50
1.90
1.80
2.20
3.00
4.00
ꢆ ꢅ ꢅ
6
6
6
6
6
6
50
50
50
50
50
50
0.6
0.8
0.8
0.8
0.8
1.0
8.00
8.00
8.00
8.00
ꢊ ꢆꢈꢅ
9.50
0.30
0.30
0.30
3.00
2.00
4.50
0.030
0.015
0.010
0.005
0.003
0.003
0.130
0.100
0.065
0.024
0.018
0.025
ꢃ,
ꢃ-
ꢃ5
LF 19
4.90
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I tripꢀꢍꢀ5SJQꢀDVSSFOUꢎꢀNJOJNVNꢀDVSSFOUꢀBUꢀXIJDIꢀUIFꢀEFWJDFꢀXJMMꢀUSJQꢀJOꢀꢋꢅ¡$ꢀTUJMMꢀBJSꢆ
V max = Maximum voltage device can withstand without damage at rated current (I max)
I max = Maximum fault current device can withstand without damage at rated voltage (Vmax
P dꢀꢍꢀ1PXFSꢀEJTTJQBUFEꢀGSPNꢀEFWJDFꢀXIFOꢀJOꢀUIFꢀUSJQQFEꢀTUBUFꢀBUꢀꢋꢅ¡$ꢀTUJMMꢀBJSꢆ
R minꢀꢍꢀ.JOJNVNꢀSFTJTUBODFꢀPGꢀEFWJDFꢀJOꢀJOJUJBMꢀꢁVOꢃTPMEFSFEꢏꢀTUBUFꢆ
)
Caution:ꢀ0QFSBUJPOꢀCFZPOEꢀUIFꢀTQFDJmFEꢀSBUJOHꢀNBZꢀSFTVMUꢀJOꢀEBNBHFꢀBOEꢀQPTTJCMFꢀBSDJOHꢀBOEꢀnBNFꢆ
©2009 Littelfuse, Inc.
Lo Rho Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/LoRho.html for current information.
Revised: October 7, 2009