Datasheet

POLY-FUSE® Resettable PTCs
Surface Mount > 1812L Series
1812L Series
RoHS
Description
The 1812L Series PTC provides surface mount overcurrent
protection for applications where resettable protection is
desired.
Features
• Low resistance
• Low-profile
• Compatible with high
temperature solders
•R
oHS compliant, lead-free
and halogen-free
•F
ast response
•C
ompact design
Applications
Agency Approvals
AGENCY
• PCI cards
• Game console port
protection
• Plug and play protection
for motherboards and
peripherals
• USB peripherals
AGENCY FILE NUMBER
E183209
R50119118
Electrical Characteristics
Part Number
Marking
I hold
(A)
I trip
(A)
V max
(Vdc)
I max
(A)
P d typ.
(W)
1812L010
1812L010/60
1812L014
1812L020
1812L020/60
1812L035/30
1812L035/60
1812L050 1
1812L050/30
1812L050/60
1812L075 1
1812L075/242
1812L075/33
1812L110 1
1812L110/16
1812L110/24
1812L110/33
1812L125/6
1812L125/16
1812L150 1
1812L150/12
1812L150/242
1812L160 1
1812L160/12
1812L200TH 1
LF010
LF010-60
LF014
LF020
LF020-60
LF035-30
LF035-60
LF050
LF050-30
LF050-60
LF075
LF075-24
LF075-33
LF110
LF110-16
LF110-24
LF110-33
LF125-6
LF125
LF150
LF150-12
LF150-24
LF160
LF160-12
LF200
0.10
0.10
0.14
0.20
0.20
0.35
0.35
0.50
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
0.30
0.30
0.34
0.40
0.40
0.75
0.70
1.00
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
30
60
60
30
60
30
60
15
30
60
13.2
24
33
8
16
24
33
6
16
8
12
24
8
12
8
100
10
10
100
40
40
10
100
100
10
100
100
20
100
100
20
20
100
100
100
100
20
100
100
100
0.8
0.8
0.8
0.8
0.8
0.8
1.00
0.8
0.8
1.50
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
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 (Vmax)
P d = Power dissipated from device when in the tripped state at 20°C still air.
Max. Time To Trip
Resistance
Current
(A)
Time
(Sec.)
R min
(Ω)
R 1max
(Ω)
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
1.50
1.50
0.15
0.02
2.00
0.15
0.15
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
0.400
0.150
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
1.700
1.000
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
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.
2 Part Number with note 2 tested and complied with AEC Q200.
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 02/26/16
Agency Approvals
POLY-FUSE® Resettable PTCs
Surface Mount > 1812L Series
Electrical Characteristics
Part Number
Marking
I hold
(A)
I trip
(A)
V max
(Vdc)
I max
(A)
1812L200/12
1812L200/16
1812L260TH 1
1812L260/12
1812L260/16
1812L300
LF200-12
LF200-16
LF260
LF260-12
LF260-16
LF300
2.00
2.00
2.60
2.60
2.60
3.00
3.50
3.50
5.20
5.00
5.00
5.00
12
16
8
12
16
6
100
100
100
100
100
100
Pd
typ.
(W)
1.0
1.0
0.8
0.8
1.2
0.8
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 (Vmax)
P d = Power dissipated from device when in the tripped state at 20°C still air.
Max. Time To Trip
Current
Time
(A)
(Sec.)
8.00
8.00
8.00
8.00
8.00
8.00
Resistance
R min
R 1max
(Ω)
(Ω)
2.00
2.00
2.50
5.00
5.00
4.00
0.020
0.020
0.015
0.015
0.015
0.012
0.070
0.070
0.047
0.055
0.050
0.040
Agency Approvals
X
X
X
X
X
X
X
X
X
X
X
X
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.
2 Part Number with note 2 tested and complied with AEC Q200.
Temperature Rerating
Ambient Operation Temperature
-40°C
-20°C
0°C
20°C
0.16
0.14
0.23
0.29
0.29
0.50
0.52
0.77
0.77
0.72
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
2.80
2.80
3.40
3.40
3.66
4.13
0.14
0.13
0.19
0.26
0.26
0.45
0.46
0.68
0.68
0.66
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
2.60
3.16
3.16
3.30
3.75
0.12
0.11
0.17
0.23
0.23
0.40
0.40
0.59
0.59
0.57
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
2.36
3.00
3.00
2.96
3.30
0.10
0.10
0.14
0.20
0.20
0.35
0.35
0.50
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
2.00
2.60
2.60
2.60
3.00
Part Number
1812L010
1812L010/60
1812L014
1812L020
1812L020/60
1812L035/30
1812L035/60
1812L050
1812L050/30
1812L050/60
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
1812L200/16
1812L260TH
1812L260/12
1812L260/16
1812L300
40°C
50°C
60°C
70°C
85°C
0.07
0.08
0.10
0.15
0.15
0.26
0.26
0.40
0.40
0.39
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
1.56
1.56
2.15
2.15
2.06
2.43
0.06
0.07
0.09
0.14
0.14
0.24
0.24
0.37
0.37
0.35
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
1.40
2.00
2.00
1.89
2.25
0.05
0.07
0.08
0.12
0.12
0.20
0.19
0.33
0.33
0.31
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
1.20
1.85
1.85
1.61
2.00
0.03
0.05
0.06
0.10
0.10
0.16
0.15
0.29
0.29
0.24
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
1.04
1.04
1.63
1.63
1.30
1.78
Hold Current (A)
0.08
0.09
0.12
0.17
0.17
0.30
0.30
0.44
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
1,78
1.72
1.72
2.30
2.30
2.23
2.61
Notes: The temperature rerating data is only for reference, please contact Littelfuse technical support for detail temperature rerating information.
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 02/26/16
POLY-FUSE® Resettable PTCs
Surface Mount > 1812L Series
Temperature Rerating Curve
Physical Specifications
170%
Percentage of Rated Current
150%
Terminal Material
Solder-Plated Copper (Solder Material:
Matte Tin (Sn))
Lead Solderability
Meets EIA Specification RS186-9E, ANSI/
J-STD-002 Category 3.
130%
Environmental Specifications
110%
90%
Operating/Storage Temp.
70%
Max. Device Surface Temp.
125°C
in Tripped State
50%
30%
Passive Aging
+85°C, 1000 hours
-/+5% typical resistance change
Humidity Aging
+85°C, 85% R.H.,1000 hours
-/+5% typical resistance change
Thermal Shock
MIL–STD–202, Method 107
+85°C/-40°C 20 times
-30% typical resistance change
Solvent Resistance
MIL–STD–202, Method 215,
No change
Vibration
MIL–STD–883, Method 2007,
Condition A, No change
Moisture Level Sesitivity
Level 1, J–STD–020
10%
-40
-40°C to +85°C
-30 -20
-10
0
10
20 30
40
Temperature (°C)
50
60
70
80 85
Note:
Typical Temperature rerating curve, refer to table for derating data
Soldering Parameters
Profile Feature
Pb-Free Assembly
Average Ramp-Up Rate (TS(max) to TP)
3°C/second max
150°C
Temperature Max (Ts(max))
200°C
Time (Min to Max) (ts)
60 – 180 secs
Time Maintained Temperature (TL)
Above:
Temperature (tL)
217°C
Peak / Classification Temperature (TP)
260
Time within 5°C of actual peak
Temperature (tp)
20 – 40 seconds
Ramp-down Rate
6°C/second max
Time 25°C to peak Temperature (TP)
8 minutes Max.
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 02/26/16
60 – 150 seconds
+0/-5
°C
Critical Zone
tL to tP
Ramp-up
TL
TS(max)
Temperature
Pre Heat:
Temperature Min (Ts(min))
tP
TP
tL
Ramp-do
Ramp-down
TS(min)
25
Preheat
tS
time to peak temperature
Time
-- All temperature refer to topside of the package, measured on the package body surface
-- If reflow temperature exceeds the recommended profile, devices may not meet the
performance requirements
-- Recommended reflow methods: IR, vapor phase oven, hot air oven, N2 environment
for lead
-- Recommended maximum paste thickness is 0.25mm(0.010inch)
-- Devices can be cleaned usingstandard industry methods and solvents
-- Devices can be reworked using the standard industry practices
POLY-FUSE® Resettable PTCs
Surface Mount > 1812L Series
0.10/60
0.10
0.20/60
0.14
0.20
0.35/30
0.35/60
0.50/30
0.50/60
0.75/33
0.75/24
1.10/33
1.10/24
1.50/24
2.00/12
0.50A
0.75A
1.10A
1.10A/16V
1.25A/6V
1.25A/16V
1.50A
1.50A/12V
1.60A
2.00A
2.60A, 2.60A/12V
2.60A/16V
3.00A
Average Time Current Curves
1812L
0
Time in Seconds
10
1
1
0.1
1812L
100
1
0.1
1
10
0.01
0.1
100
Current in Amperes
1
10
100
Current in Amperes
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.
Additional Information
Datasheet
Resources
Samples
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 02/26/16
POLY-FUSE® Resettable PTCs
Surface Mount > 1812L Series
Dimensions
MARKING CODE VARIES
WITH AMPERAGE AND VOLTAGE RATING
(See Electrical Characteristics Table)
SHOWN ARE:
- 1.1A/6V RATING (LEFT)
- 1.1A/33V RATING (RIGHT)
C
A
Top
View
110
Bottom
View
110
E
3.15 mm
(.124”)
1.78mm
(.070”)
B
A
Inches
Side
View
3.45 mm
(.135”)
Pad
Layout
D
Part
Number
110
-33
B
mm
Inches
C
mm
Inches
Min Max Min Max Min Max Min Max Min
D
mm
Inches
E
mm
Max Min Max Min Max Min Max
Inches
Min
mm
Max Min Max
1812L010
0.17
0.19
4.37
4.73
0.12
0.13 3.07 3.41
0.03
0.05
0.75
1.25
0.01
0.05
0.3
1.2
0.01
0.03
0.15
0.65
1812L010/60
0.17
0.19
4.37
4.73
0.12
0.13 3.07 3.41
0.03
0.05
0.75
1.25
0.01
0.05
0.3
1.2
0.01
0.03
0.15
0.65
1812L014
0.17
0.19
4.37
4.73
0.12
0.13 3.07 3.41
0.03
0.08
0.75
1.95
0.01
0.05
0.3
1.2
0.01
0.03
0.15
0.65
1812L020
0.17
0.19
4.37
4.73
0.12
0.13 3.07 3.41
0.02
0.04
0.55
1.00
0.01
0.05
0.3
1.2
0.01
0.03
0.15
0.65
1812L020/60
0.17
0.19
4.37
4.73
0.12
0.13 3.07 3.41
0.03
0.05
0.75
1.25
0.01
0.05
0.3
1.20
0.01
0.03
0.15
0.65
1812L035/30
0.17
0.19
4.37
4.73
0.12
0.13 3.07 3.41
0.02
0.04
0.6
1.25
0.01
0.05
0.3
1.20
0.01
0.03
0.15
0.65
1812L035/60
0.17
0.19
4.37
4.73
0.12
0.13 3.07 3.41
0.05
0.07
1.2
1.8
0.01
0.05
0.3
1.2
0.01
0.03
0.15
0.65
1812L050
0.17
0.19
4.37
4.73
0.12
0.13 3.07 3.41
0.02
0.03
0.5
0.75
0.01
0.05
0.3
1.2
0.01
0.02
0.15
0.50
1812L050/30
0.17
0.19
4.37
4.73
0.12
0.13 3.07 3.41
0.02
0.04
0.5
1.00
0.01
0.05
0.3
1.2
0.01
0.03
0.15
0.65
1812L050/60
0.17
0.19
4.37
4.73
0.12
0.13 3.07 3.41
0.05
0.07
1.2
1.8
0.01
0.05
0.3
1.2
0.01
0.03
0.15
0.65
1812L075
0.17
0.19
4.37
4.73
0.12
0.13 3.07 3.41
0.02
0.03
0.5
0.75
0.01
0.05
0.3
1.2
0.01
0.02
0.15
0.50
1812L075/24
0.17
0.19
4.37
4.73
0.12
0.13 3.07 3.41
0.03
0.06
0.75
1.55
0.01
0.05
0.3
1.2
0.01
0.03
0.15
0.65
1812L075/33
0.17
0.19
4.37
4.73
0.12
0.13 3.07 3.41
0.03
0.06
0.75
1.55
0.01
0.05
0.3
1.2
0.01
0.03
0.15
0.65
1812L110
0.17
0.19
4.37
4.73
0.12
0.13 3.07 3.41
0.02
0.03
0.50 0.71
0.01
0.05
0.3
1.2
0.01
0.02
0.15
0.65
1812L110/24
0.17
0.19
4.37
4.73
0.12
0.13 3.07 3.41
0.02
0.04
0.50
0.01
0.05
0.3
1.2
0.01
0.03
0.15
0.65
1.07
1812L110/16
0.17
0.19
4.37
4.73
0.12
0.13 3.07 3.41
0.03
0.05
0.75
1.25
0.01
0.05
0.3
1.2
0.01
0.03
0.15
0.65
1812L110/33
0.17
0.19
4.37
4.73
0.12
0.13 3.07 3.41
0.05
0.08
1.20
2.00
0.01
0.05
0.3
1.2
0.01
0.03
0.15
0.65
1812L125/6
0.17
0.19
4.37
4.73
0.12
0.13 3.07 3.41
0.02
0.03
0.45 0.75
0.01
0.05
0.3
1.2
0.01
0.03
0.15
0.65
1812L125/16
0.17
0.19
4.37
4.73
0.12
0.13 3.07 3.41
0.03
0.05
0.75
0.01
0.05
0.3
1.2
0.01
0.02
0.15
0.65
1.25
1812L150
0.17
0.19
4.37
4.73
0.12
0.13 3.07 3.41
0.02
0.03
0.40 0.71
0.01
0.05
0.3
1.2
0.01
0.03
0.15
0.65
1812L150/12
0.17
0.19
4.37
4.73
0.12
0.13 3.07 3.41
0.03
0.05
0.75
1.25
0.01
0.05
0.3
1.2
0.01
0.03
0.15
0.65
1.8
1812L150/24
0.17
0.19
4.37
4.73
0.12
0.13 3.07 3.41
0.03
0.07
0.80
1812L160
0.17
0.19
4.37
4.73
0.12
0.13 3.07 3.41
0.02
0.03
0.40 0.75
0.03
0.05
0.01
0.05
0.3
1.2
0.01
0.03
0.15
0.65
0.01
0.05
0.3
1.2
0.01
0.03
0.15
0.65
1812L160/12
0.17
0.19
4.37
4.73
0.12
0.13 3.07 3.41
0.75
1.25
0.01
0.05
0.3
1.2
0.01
0.03
0.15
0.65
1812L200TH
0.17
0.19
4.37
4.73
0.12
0.13 3.07 3.41 0.008 0.024 0.20
0.6
0.01
0.05
0.3
1.2
0.01
0.02
0.15
0.65
1812L200/12
0.17
0.19
4.37
4.73
0.12
0.13 3.07 3.41
0.03
0.05
0.80
1.20 0.012 0.047
0.3
1.2
0.01 0.026 0.15
0.65
1812L200/16
0.17
0.19
4.37
4.73
0.12
0.13 3.07 3.41
0.03
0.05
0.80
1.20 0.012 0.047
0.3
1.2
0.01 0.026 0.15
0.65
1812L260TH
0.17
0.19
4.37
4.73
0.12
0.13 3.07 3.41
0.02
0.04
0.50
1.00
0.01
0.05
0.3
1.2
0.01
0.02
0.15
0.65
1812L260/12
0.17
0.19
4.37
4.73
0.12
0.13 3.07 3.41
0.03
0.05
0.80
1.34
0.01
0.05
0.3
1.2
0.01
0.03
0.15
0.65
1812L260/16
0.18
0.19
4.54
4.90
0.12
0.14
3.16 3.50
0.05
0.08
1.20
2.00 0.012 0.047
0.3
1.2
0.006 0.03
0.15
0.65
1812L300
0.17
0.19
4.37
4.73
0.12
0.13 3.07 3.41
0.02
0.06
0.50
1.50
0.3
1.2
0.01
0.15
0.65
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 02/26/16
0.01
0.05
0.03
POLY-FUSE® Resettable PTCs
Surface Mount > 1812L Series
Part Ordering Number System
1812 L 380 /12 TH Y R - A
-A: Automotive grade
Blank: Standard version
SERIES
PACKAGING STYLE
R: Tape & Reel
QUANTITY CODE: K=10,000 Y=4,000 W=3,000 P=2,000
THIN PROFILE
(Not applicable to all parts)
/XX: SPECIAL VOLTAGE RATING
(Not applicable to all parts. Refer
to Electrical Characteristics Table)
I HOLD HOLD CURRENT CODE
(Refer to Electrical Characteristics Table)
L: LITTELFUSE SURFACE MOUNT PPTC
SIZE
Packaging
Part Number
Ordering Number
Halogen Free
I hold (A)
I hold Code
1812L010
1812L010/60
1812L014
1812L020
1812L020/60
1812L035/30
1812L035/60
1812L050
1812L050/30
1812L050/60
1812L075
1812L75/24
1812L75/33
1812L110
1812L110/16
1812L110/24
1812L110/33
1812L125/6
1812L125/16
1812L150
1812L150/12
1812L150/24
1812L160
1812L160/12
1812L200TH
1812L200/12
1812L200/16
1812L260TH
1812L260/12
1812L260/16
1812L300
1812L010DR
1812L010/60DR
1812L014DR
1812L020PR
1812L020/60DR
1812L035/30DR
1812L035/60
1812L050PR
1812L050/30PR
1812L050/60
1812L075PR
1812L075/24DR
1812L075/33DR
1812L110PR
1812L110/16DR
1812L110/24DR
1812L110/33MR
1812L125/6PR
1812L125/16DR
1812L150ZR
1812L150/12DR
1812L150/24MR
1812L160PR
1812L160/12DR
1812L200THPR
1812L200/12DR
1812L200/16DR
1812L260THDR
1812L260/12MR
1812L260/16MR
1812L300MR
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
0.10
0.10
0.14
0.20
0.20
0.35
0.35
0.50
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
2.00
2.60
2.60
2.60
3.00
010
010
014
020
020
035
035
050
050
050
075
075
075
110
110
1.10
110
125
125
150
150
150
160
160
200
200
200
260
260
260
300
Voltage
Option
Packaging
Option
Quantity
Tape and Reel
1500
1500
1500
2000
1500
1500
1000
2000
2000
1000
2000
1500
1500
2000
1500
1500
1000
2000
1500
2000
1500
1000
2000
1500
2000
1500
1500
1500
1000
1000
1000
/60
/60
/30
/60
/30
/60
/24
/33
/16
/24
/33
/6
/16
/12
/24
/12
/12
/12
Quantity &
Packaging Code
DR
DR
DR
PR
DR
DR
MR
PR
PR
MR
PR
DR
DR
PR
DR
DR
MR
PR
DR
ZR
DR
MR
PR
DR
PR
DR
DR
DR
MR
MR
MR
WARNING
• Users shall independently assess the suitability of these devices for each of their applications
• Operation of these devices beyond the stated maximum ratings could result in damage to the devices and lead to electrical arcing and/or fire
• These devices are intended to protect against the effects of temporary over-current or over-temperature conditions and are not intended to perform as protective devices where such
conditions are expected to be repetitive or prolonged in duration
• Exposure to silicon-based oils, solvents, electrolytes, acids, and similar materials can adversely affect the performance of these PPTC devices
• These devices undergo thermal expansion under fault conditions, and thus shall be provided with adequate space and be protected against mechanical stresses
• Circuits with inductance may generate a voltage (L di/dt) above the rated voltage of the PPTC device.
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 02/26/16
POLY-FUSE® Resettable PTCs
Surface Mount > 1812L Series
Tape and Reel Specifications
TAPE SPECIFICATIONS: EIA-481-1 (mm)
1812L020
1812L035/30
1812L050
1812L075
1812L110
1812L125/6
1812L150
1812L160
1812L200
1812L010
1812L010/60
1812L014
1812L020/60
1812L050/30
1812L075/24
1812L075/33
1812L110/16
1812L110/24
1812L125/16
1812L150/12
1812L160/12
1812L200/12
1812L200/16
1812L260
1812L035/60
1812L050/60
1812L110/33
1812L150/24
1812L260/12
1812L260/16
1812L300
W
12.00 ± 0.30
12.00 ± 0.30
12.00 ± 0.30
C
Ø178 ± 1.0
F
5.50 ± 0.05
5.50 ± 0.05
5.50 ± 0.05
D
Ø60.2 ± 0.5
E1
1.75 ± 0.10
1.75 ± 0.10
1.75 ± 0.10
H
16.0 ± 0.5
D0
1.55 ± 0.10
1.55+/- 0.05
1.55 ± 0.05
W
13.2 ± 1.5
D1
1.55 (min)
1.50+/- 0.10
1.50 (MIN)
P0
4.00 ± 0.10
4.00 ± 0.10
4.00 ± 0.08
P1
8.00 ± 0.10
8.00 ± 0.10
8.00 ± 0.10
P2
2.00 ± 0.05
2.00 ± 0.05
2.00 ± 0.05
A0
3.58 ± 0.10
3.50 ± 0.10
3.58 ± 0.10
B0
4.93 ± 0.10
4.85± 0.10
4.93 ± 0.10
T
0.25 ± 0.10
0.25 ± 0.10
0.25 ± 0.10
K0
0.87± 0.06
1.25 ± 0.10
2.10 ± 0.10
Leader min.
390
390
390
Trailer min.
160
160
160
REEL DIMENSIONS:
EIA-481-1 (mm)
Tape and Reel Diagram
H
D0
P0
P1
E1
P2
D
F
W
T
D1
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 02/26/16
D1
K0
W
B0
C