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
at normal operating hold
current)
board space
Agency Approvals
AGENCY
AGENCY FILE NUMBER
E183209
R50119118
temperature solders
currents
Applications
protection
for motherboards and
peripherals
Electrical Characteristics
Maximum Time
To Trip
Current
(A)
8.00
8.00
8.00
8.00
9.50
Time
(Sec.)
0.30
0.30
0.30
3.00
2.00
4.50
Resistance
R
min
(Ω)
0.030
0.015
0.010
0.005
0.003
0.003
R
1max
(Ω)
0.130
0.100
0.065
0.024
0.018
0.025
X
X
X
X
X
X
X
X
X
X
X
X
Part Number
Marking
I
hold
(A)
1.10
1.10
1.50
2.00
3.50
I
trip
(A)
1.80
2.20
3.00
4.00
4.90
V
max
(Vdc)
6
6
6
6
6
6
I
max
(A)
50
50
50
50
50
50
P
d
max.
(W)
0.6
0.8
0.8
0.8
0.8
1.0
Agency
Approvals
0805L110SLYR
1206L110SLYR
1206L150SLYR
1210L200SLYR
1812L190SLPR
I
hold
I
trip
LF 19
1.90
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
R
min
R
1max
Caution:
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/LoRho.html for current information.
Revised: October 7, 2009
Lo Rho Series
Lo Rho Series
POLYFUSE
®
Resettable PTCs
Surface Mount > Lo Rho Series
Temperature Rerating
Ambient Operation Temperature
Part Number
0805L110SLYR
1206L110SLYR
1206L150SLYR
1210L200SLYR
1812L190SLPR
3.26
5.00
3.00
4.60
2.58
1.93
2.00
2.32
1.65
1.38
1.40
1.95
2.50
4.05
2.22
Hold Current (A)
1.10
1.10
1.50
2.00
3.50
1.90
2.80
1.49
0.83
0.83
1.15
1.29
2.00
1.14
0.55
0.56
0.41
0.44
0.64
1.09
1.60
0.93
1.00
0.61
0.21
0.24
0.36
Average Time Current Curves
1206L150SL
1210L200SL
1812L190SL
0805L110SL
1206L110SL
Temperature Rerating Curve
170%
150%
Percentage of Rated Current
130%
110%
90%
70%
50%
30%
10.000
LoRho Series
Time in Seconds
1.000
10%
-40 -30 -20
-10
0
10
20 30
40
Temperature (°C)
50
60
70
80
Environmental Specifications
0.100
Operating/Storage
Temperature
Maximum Device Surface
Temperature in Tripped State
0.010
1.0
Passive Aging
10.0
100.0
Current in Amperes
Humidity Aging
The average time current curves and Temperature Rerating curve performance is affected
by a number or variables, and these curves provided as guidance only. Customer must
verify the performance in their application.
Thermal Shock
Physical Specifications
Solvent Resistance
No change
Condition A
No change
Terminal Material
Lead Solderability
Vibration
Moisture Sensitivity Level
Lo Rho Series
Revised: October 7, 2009
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/LoRho.html for current information.
POLYFUSE
®
Resettable PTCs
Surface Mount > Lo Rho Series
Soldering Parameters
Profile Feature
S(max)
to T
P
)
Temperature Min (T
s(min)
)
Temperature Max (T
s(max)
)
Time (Min to Max) (t
s
)
60 – 180 secs
60 – 150 seconds
Time Maintained
Temperature (T
L
)
Temperature (t
L
)
P
)
260
20 – 40 seconds
Temperature (t
p
)
)
P
8 minutes Max.
performance requirements
2
environment for lead
Dimensions
Device Dimensions
Solder Pad Layout
A
C
Side
View
Top
View
B
G
H
F
F
Bottom
View
D
E
Marking code varies by device --
See Electrical Characteristics table
Device Dimension
Part Number
A
mm
Min
Max
Min
Solder Pad Layout
D
mm
E
mm
Min
Max
Max
B
mm
Max
Min
C
mm
Max
Min
F
mm
1.00
1.00
1.00
1.00
1.00
G
mm
1.20
1.80
1.80
2.00
2.00
3.45
H
mm
1.50
1.80
1.80
2.50
2.50
3.15
0805L110SLYR
1206L110SLYR
1206L150SLYR
1210L200SLYR
1812L190SLPR
2.00 2.20 1.20
3.00 3.40 1.50
3.00 3.40 1.50
1.50 0.40
1.80 0.40
1.80 0.40
0.20
0.25
0.25
0.25
0.25
0.30
0.55
0.10
0.10
0.10
0.20
0.20
0.45
0.45
0.45
0.50
0.50
0.65
3.00 3.43 2.35 2.80 0.40
3.00 3.43 2.35 2.80 0.60 1.00
3.41 0.40
1.20
0.25
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/LoRho.html for current information.
Revised: October 7, 2009
Lo Rho Series
Lo Rho Series
POLYFUSE
®
Resettable PTCs
Surface Mount > Lo Rho Series
Part Ordering Number System
Packaging
Quantity &
I
hold
I
hold
Packaging
Quantity Packaging
(A) Code Option
Codes
1.10
1.10
1.50
2.00
3.50
1812L190SLPR
1.90
110
110
150
200
350
190
Tape &
Reel
4000
4000
4000
4000
4000
2000
YR
YR
YR
YR
YR
PR
0805 L 110 SL Y R
Part Number
PACKAGING STYLE
R:
Tape
& Reel
QUANTITY CODE
P:
2000
Y:
4000
SL: LoRho PTC Series
I
HOLD
HOLD CURRENT CODE
L: LITTELFUSE SURFACE MOUNT PPTC
SIZE
SERIES
0805L110SLYR
1206L110SLYR
1206L150SLYR
1210L200SLYR
Tape and Reel Specifications
TAPE SPECIFICATIONS: EIA-481-1 (mm)
0805L110SL
1206L110SL
1206L150SL
1210L200SL
1210L350SL-S
1812P190SL
REEL DIMENSIONS: EIA-481-1 (mm)
0805L110SL
1210L200SL
1206L110SL
1206L150SL
1812P190SL
W
F
E
1
D
0
D
1
P
0
P
1
P
2
A
0
B
0
T
K
0
Leader min.
Trailer min.
390
160
390
160
390
160
390
160
1.0 (min)
1.00 (MIN)
1.0 (min)
H
W
D
F
C
H
1
W
1
W
2
W
3
W
4
Tape and Reel Diagram
H
P
1
P
0
D
0
P
2
E
1
W
4
W
3
D
F
W
W
2
C
T
D
2
F
W
1
W
A
0
K
0
B
0
H
1
Lo Rho Series
Revised: October 7, 2009
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/LoRho.html for current information.
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