PTC Datasheet
1812L Series
Surface Mount
RoHS
Description
The 1812L Series PTC provides surface mount overcurrent
protection for applications where resettable protection is desired.
Features
■ RoHS compliant, lead-free
and halogen-free
■ Low resistance
■ Fast response
■ Compatible with high
temperature solders
■ Compact design
■ Low-profile
Applications
■ Plug and play protection for
motherboards and peripherals
■ Game console port protection
■ USB peripherals
Additional Information
■ PCI cards
Agency Approvals
Agency
Agency File Number
E183209
Resources
Accessories
R50119118
Samples
1
© 2021 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: GD. 05/14/21
PTC Datasheet
1812L Series
Surface Mount
Electrical Characteristics
Part Number
1812L010
Marking
LF010
Max. Time To Trip
Resistance
Agency Approvals
I hold
I trip
V max
I max
(A)
(A)
(Vdc)
(A)
P d typ.
(W)
Current (A)
Time (Sec.)
R min (Ω)
R 1max (Ω)
0.10
0.30
30
100
0.8
0.50
1.50
1.600
15.000
X
X
1812L010/60
LF010-60
0.10
0.30
60
10
0.8
0.50
1.50
1.600
15.000
X
X
1812L014
LF014
0.14
0.34
60
10
0.8
1.50
0.15
1.500
6.000
X
X
1812L020
LF020
0.20
0.40
30
100
0.8
8.00
0.02
0.800
5.000
X
X
1812L020/60
LF020-60
0.20
0.40
60
40
0.8
1.00
2.00
1.400
4.400
X
X
1812L035/30
LF035-30
0.35
0.75
30
40
0.8
8.00
0.15
0.400
1.700
X
X
1812L035/60
LF035-60
0.35
0.70
60
10
1.00
8.00
0.15
0.400
1.700
X
X
1812L050 1
LF050
0.50
1.00
15
100
0.8
8.00
0.15
0.150
1.000
X
X
1812L050/30
LF050-30
0.50
1.00
30
100
0.8
8.00
0.15
0.150
1.000
X
X
1812L050/60
LF050-60
0.50
1.00
60
10
1.50
8.00
0.15
0.150
1.000
X
X
1812L075
LF075
0.75
1.50
13.2
100
0.8
8.00
0.20
0.100
0.450
X
X
1812L075/242
LF075-24
0.75
1.50
24
100
0.8
8.00
0.20
0.110
0.290
X
X
1812L075/33
LF075-33
0.75
1.50
33
20
0.8
8.00
0.20
0.110
0.400
X
X
1812L110 1
LF110
1.10
2.20
8
100
0.8
8.00
0.30
0.040
0.210
X
X
1
1812L110/16
LF110-16
1.10
1.95
16
100
0.8
8.00
0.30
0.060
0.180
X
X
1812L110/24
LF110-24
1.10
1.95
24
20
0.8
8.00
0.50
0.060
0.200
X
X
1812L110/33
LF110-33
1.10
1.95
33
20
0.8
8.00
0.50
0.060
0.200
X
X
1812L125/6
LF125-6
1.25
2.50
6
100
0.8
8.00
0.40
0.050
0.140
X
X
1812L125/16
LF125
1.25
2.50
16
100
0.8
8.00
0.40
0.050
0.140
X
X
1812L150 1
LF150
1.50
3.00
8
100
0.8
8.00
0.30
0.040
0.110
X
X
1812L150/12
LF150-12
1.50
3.00
12
100
0.8
8.00
0.50
0.040
0.110
X
X
1812L150/16
LF150-16
1.50
2.80
16
100
0.8
8.00
0.50
0.040
0.110
X
X
LF150-24
1.50
3.00
24
20
0.8
8.00
1.50
0.040
0.120
X
X
1812L160 1
LF160
1.60
2.80
8
100
0.8
8.00
1.00
0.030
0.100
X
X
1812L160/12
LF160-12
1.60
2.80
12
100
0.8
8.00
1.00
0.030
0.100
X
X
1812L200TH 1
LF200
2.00
3.50
8
100
0.8
8.00
2.00
0.020
0.070
X
X
1812L200/12
LF200-12
2.00
3.50
12
100
1.0
8.00
2.00
0.020
0.070
X
X
1812L200/16
LF200-16
2.00
3.50
16
100
1.0
8.00
2.00
0.020
0.070
X
X
1812L260TH 1
LF260
2.60
5.20
8
100
0.8
8.00
2.50
0.015
0.047
X
X
1812L260/12
LF260-12
2.60
5.00
12
100
0.8
8.00
5.00
0.015
0.055
X
X
1812L150/24
2
1812L260/16
LF260-16
2.60
5.00
16
100
1.2
8.00
5.00
0.015
0.050
X
X
1812L300
LF300
3.00
5.00
6
100
0.8
8.00
4.00
0.012
0.040
X
X
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.
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.
2
© 2021 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: GD. 05/14/21
PTC Datasheet
1812L Series
Surface Mount
Temperature Rerating
Ambient Operation Temperature
-40°C
-20°C
0°C
20°C
Part Number
40°C
50°C
60°C
70°C
85°C
Hold Current (A)
1812L010
0.16
0.14
0.12
0.10
0.08
0.07
0.06
0.05
0.03
1812L010/60
0.16
0.14
0.12
0.10
0.08
0.07
0.06
0.05
0.03
1812L014
0.23
0.19
0.17
0.14
0.12
0.10
0.09
0.08
0.06
1812L020
0.29
0.26
0.23
0.20
0.17
0.15
0.14
0.12
0.10
1812L020/60
0.29
0.26
0.23
0.20
0.17
0.15
0.14
0.12
0.10
1812L035/30
0.50
0.45
0.40
0.35
0.30
0.26
0.24
0.20
0.16
1812L035/60
0.50
0.46
0.40
0.35
0.30
0.26
0.24
0.20
0.16
1812L050
0.77
0.68
0.59
0.50
0.44
0.40
0.37
0.33
0.29
1812L050/30
0.77
0.68
0.59
0.50
0.44
0.40
0.37
0.33
0.29
1812L050/60
0.77
0.68
0.59
0.50
0.44
0.40
0.37
0.33
0.29
1812L075
1.15
1.01
0.88
0.75
0.65
0.60
0.55
0.49
0.43
1812L075/24
1.06
0.95
0.84
0.75
0.60
0.55
0.50
0.45
0.37
1812L075/33
1.10
1.00
0.88
0.75
0.66
0.60
0.56
0.47
0.36
1812L110
1.59
1.43
1.26
1.10
0.95
0.87
0.80
0.71
0.60
1812L110/16
1.58
1.43
1.27
1.10
0.95
0.85
0.77
0.71
0.58
1812L110/24
1.55
1.40
1.25
1.10
0.93
0.83
0.73
0.63
0.50
1812L110/33
1.55
1.40
1.25
1.10
0.93
0.83
0.73
0.63
0.50
1812L125/6
2.00
1.75
1.52
1.25
1.00
0.95
0.90
0.75
0.53
1812L125/16
2.00
1.75
1.52
1.25
1.00
0.95
0.90
0.75
0.53
1812L150
2.06
1.93
1.79
1.50
1.28
1.10
1.02
0.80
0.68
1812L150/12
2.04
1.88
1.68
1.50
1.25
1.10
1.00
0.80
0.60
1812L150/16
2.04
1.88
1.68
1.50
1.25
1.10
1.00
0.80
0.60
1812L150/24
2.05
1.87
1.67
1.50
1.25
1.08
0.95
0.77
0.60
1812L160
2.20
2.06
1.91
1.60
1.36
1.17
1.09
0.85
0.72
1812L160/12
2.20
2.06
1.91
1.60
1.36
1.17
1.09
0.85
0.72
1812L200TH
2.60
2.44
2.22
2.00
1,78
1.67
1.50
1.45
1.29
1812L200/12
2.60
2.44
2.22
2.00
1.78
1.67
1.50
1.45
1.29
1812L200/16
2.60
2.44
2.22
2.00
1.78
1.67
1.50
1.45
1.29
1812L260TH
3.40
3.16
3.00
2.60
2.30
2.15
2.00
1.85
1.63
1812L260/12
3.40
3.16
3.00
2.60
2.30
2.15
2.00
1.85
1.63
1812L260/16
3.40
3.16
3.30
2.60
2.30
2.15
2.00
1.85
1.63
1812L300
4.13
3.75
3.30
3.00
2.62
2.43
2.25
2.00
1.78
Notes: The temperature rerating data is only for reference, please contact Littelfuse technical support for detail temperature rerating information.
3
© 2021 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: GD. 05/14/21
PTC Datasheet
1812L Series
Surface Mount
Temperature Rerating Curve
Physical Specifications
170%
Terminal Material
Solder-Plated Copper (Solder Material:
Matte Tin (Sn))
Lead Solderability
Meets EIA Specification RS186-9E, ANSI/
J-STD-002 Category 3.
Percentage of Rated Current
150%
130%
110%
Environmental Specifications
90%
70%
50%
Operating Temp.
-40°C to +85°C
Max. Device Surface Temp. in
Tripped State
125°C
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
30%
10%
-40
-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
Temperature Min (Ts(min))
150°C
Temperature Max (Ts(max))
200°C
Time (Min to Max) (ts)
60 – 180 secs
Time Maintained Temperature (TL)
217°C
Above:
60 – 150 seconds
Temperature (tL)
Peak / Classification Temperature (TP)
Time within 5°C of actual peak Temperature
(tp)
260
+0/-5
°C
Ramp-down Rate
6°C/second max
Time 25°C to peak Temperature (TP)
8 minutes Max.
tL
Ramp-do
Ramp-down
TS(min)
25
20 – 40 seconds
Critical Zone
tL to tP
Ramp-up
TL
TS(max)
Temperature
Pre Heat:
tP
TP
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
4
© 2021 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: GD. 05/14/21
PTC Datasheet
1812L Series
Surface Mount
0.1
0.01
0.1
0.1
1
0.01
0.1
100
100
10
10
1
Time in Seconds
10
1812L
Time in Seconds
10
1812L
Time in Seconds
100
Time in Seconds
100
0.10/60
0.10
0.20/60
0.14
0.20
0.35/30
0.35/60
0.50/30
0.50/60
0.10/60
0.75/33
0.10
0.75/24
0.20/60
1.10/33
0.14
1.10/24
0.20
1.50/24
0.35/30
2.00/12
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
0.50A
2.60A,
0.75A 2.60A/12V
2.60A/16V
1.10A
3.00A
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
0.1
10
1
100
10
0.01
0.1
100
Current in Amperes Current in Amperes
1812L
1812L
1
0.1
1
0.01
0.1
10
1
100
10
Current in Amperes 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.
5
© 2021 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: GD. 05/14/21
100
PTC Datasheet
1812L Series
Surface Mount
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
110
-33
B
3.45 mm
(.135”)
Pad
Layout
D
Side
View
E
1.78mm
(.070”)
A
Part Number
Inches
Min
1812L010
Max
3.15 mm
(.124”)
B
mm
Min
Max
Inches
Min
Max
C
mm
Min
Max
D
Inches
Min
Max
mm
Min
Max
E
Inches
Min
mm
Max
Min
Max
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
Inches
Min
Max
mm
Min
Max
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
1812L035/30
1812L035/60
1812L050
0.17
0.17
0.17
0.17
0.3
0.3
0.3
0.3
1.20
1.20
1.2
1.2
0.01
0.01
0.01
0.01
0.19
0.19
0.19
0.19
4.37
4.37
4.37
4.37
4.73
4.73
4.73
4.73
0.12
0.12
0.12
0.12
0.13
0.13
0.13
0.13
3.07
3.07
3.07
3.07
3.41
3.41
3.41
3.41
0.03
0.02
0.05
0.02
0.05 0.75 1.25 0.01 0.05
0.04 0.6 1.25 0.01 0.05
0.07 1.2
1.8 0.01 0.05
0.03 0.5 0.75 0.01 0.05
0.03
0.03
0.03
0.02
0.15
0.15
0.15
0.15
0.65
0.65
0.65
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
0.3
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 0.05 0.75 1.20 0.01 0.05
0.3
1.2
0.01 0.03 0.15 0.65
0.01 0.05
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 1.07 0.01 0.05
0.3
1.2
0.01 0.03 0.15 0.65
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 1.25 0.01 0.05
0.3
1.2
0.01 0.02 0.15 0.65
1812L150
0.17 0.19 4.37 4.73 0.12 0.13 3.07 3.41 0.02 0.03 0.30 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
1812L150/16
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
1812L150/24
0.17 0.19 4.37 4.73 0.12 0.13 3.07 3.41 0.03 0.07 0.80
0.01 0.05
0.3
1.2
0.01 0.03 0.15 0.65
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 0.01 0.05
1.8
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 0.03 0.05 0.75 1.25 0.01 0.05
0.3
1.2
1812L200TH
0.17 0.19 4.37 4.73 0.12 0.13 3.07 3.41 0.008 0.024 0.20
0.3
1.2
0.6
0.01 0.05
1.2
0.01 0.15 0.65
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 0.01 0.05
1.2
6
0.3
0.01 0.03 0.15 0.65
© 2021 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: GD. 05/14/21
PTC Datasheet
1812L Series
Surface Mount
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
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
1812L150/16
1812L150/24
1812L160
1812L160/12
1812L200TH
1812L200/12
1812L200/16
1812L260TH
1812L260/12
1812L260/16
1812L300
Ordering Number Halogen Free
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
1812L150/16DR
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
Yes
I hold (A)
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
1.50
1.60
1.60
2.00
2.00
2.00
2.60
2.60
2.60
3.00
I hold Code Voltage Option Packaging Option
010
010
014
020
020
035
035
050
050
050
075
075
075
110
110
1.10
110
125
125
150
150
150
150
160
160
200
200
200
260
260
260
300
/60
/60
/30
/60
/30
/60
/24
/33
/16
/24
/33
/6
/16
/12
/16
/24
/12
/12
/12
-
Tape and Reel
Quantity
Quantity & Packaging Code
1500
1500
1500
2000
1500
1500
1000
2000
2000
1000
2000
1500
1500
2000
1500
1500
1000
2000
1500
2000
1500
1500
1000
2000
1500
2000
1500
1500
1500
1000
1000
1000
DR
DR
DR
PR
DR
DR
MR
PR
PR
MR
PR
DR
DR
PR
DR
DR
MR
PR
DR
ZR
DR
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.
7
© 2021 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: GD. 05/14/21
PTC Datasheet
1812L Series
Surface Mount
Tape and Reel Specifications
TAPE SPECIFICATIONS: EIA-481-1 (mm)
1812L010
1812L010/60
1812L014
1812L020/60
1812L035/30
1812L075/24
1812L075/33
1812L110/16
1812L110/24
1812L125/16
1812L150/12
1812L150/16
1812L160/12
1812L200/12
1812L200/16
1812L260
1812L020
1812L050/30
1812L050
1812L075
1812L110
1812L125/6
1812L150
1812L160
1812L200
1812L035/60
1812L050/60
1812L110/33
1812L150/24
1812L260/12
1812L260/16
1812L300
REEL DIMENSIONS:
EIA-481-1 (mm)
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
P0
P1
P2
A0
B0
T
K0
Leader min.
Trailer min.
1.55 (min)
4.00 ± 0.10
8.00 ± 0.10
2.00 ± 0.05
3.58 ± 0.10
4.93 ± 0.10
0.25 ± 0.10
0.87± 0.06
390
160
1.50+/- 0.10
4.00 ± 0.10
8.00 ± 0.10
2.00 ± 0.05
3.50 ± 0.10
4.85± 0.10
0.25 ± 0.10
1.25 ± 0.10
390
160
1.50 (MIN)
4.00 ± 0.08
8.00 ± 0.10
2.00 ± 0.05
3.58 ± 0.10
4.93 ± 0.10
0.25 ± 0.10
2.10 ± 0.10
390
160
Tape and Reel Diagram
H
D0
P0
P1
E1
P2
D
F
C
W
T
A0
D1
K0
W
B0
Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are
not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at www.littelfuse.com/disclaimer-electronics.
8
© 2021 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: GD. 05/14/21
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