Circuit Protection
SRF1812 Series
Surface-Mount Devices | 1812 Size
PTC Resettable Fuses
Applications
Features
Computer
Portable electronics
Multimedia
Game machines
Telephony and broadband
Mobile phones
Automotive
Industrial controls
Compact design saves board space
Fast response to fault currents
Compatible with high temperature solders
Low resistance
Low-profile
RoHS compliant, lead-free and halogen-free
Electrical Characteristics
IH
(A)
IT
(A)
V max
(V)
I max
(A)
Time to Trip
Part Number
(A)
SRF1812P010
0.10
0.30
60
10
SRF1812P014
0.14
0.34
60
SRF1812P020
0.20
0.40
SRF1812P020/60
0.20
SRF1812P030
(Sec.)
Pd typ
(W)
Rmin
(Ω)
R1max
(Ω)
0.5
1.50
0.8
0.700
15.000
10
1.5
0.15
0.8
0.400
6.500
30
10
8.0
0.20
0.8
0.750
5.000
0.40
60
10
1.5
0.15
0.8
0.400
6.000
0.30
0.60
30
10
8.0
0.10
0.8
0.300
3.000
SRF1812P035
0.35
0.70
16
40
8.0
0.10
0.8
0.200
1.800
SRF1812P050
0.50
1.00
15
40
8.0
0.15
0.8
0.150
1.000
SRF1812P075
0.75
1.50
16
40
8.0
0.20
0.8
0.110
0.450
SRF1812P075/24
0.75
1.50
24
40
8.0
0.20
0.8
0.110
0.450
SRF1812P075/33
0.75
1.50
33
40
8.0
0.20
0.8
0.110
0.450
SRF1812P110
1.10
2.20
8
100
8.0
0.30
0.8
0.040
0.225
SRF1812P110/16
1.10
2.20
16
100
8.0
0.50
0.8
0.040
0.225
SRF1812P110/24
1.10
2.20
24
100
8.0
0.50
1.2
0.055
0.180
SRF1812P125
1.25
2.50
8
40
8.0
0.40
0.8
0.035
0.140
SRF1812P150
1.50
3.00
8
100
8.0
0.50
0.8
0.030
0.120
SRF1812P150/12
1.50
3.00
12
100
8.0
0.50
1.0
0.030
0.120
1 Document Number: P170702J1451
Surface-Mount Devices | 1812 Size
SRF1812 Series
PTC Resettable Fuses
Electrical Characteristics (continued)
IH
(A)
IT
(A)
V max
(V)
I max
(A)
Time to Trip
Part Number
(A)
SRF1812P150/16
1.50
3.00
16
100
SRF1812P150/24
1.50
3.00
24
SRF1812P160
1.60
3.20
SRF1812P160/12
1.60
SRF1812P160/16
(Sec.)
Pd typ
(W)
Rmin
(Ω)
R1ma
(Ω)
8.0
0.50
0.8
0.030
0.120
100
8.0
1.50
1.2
0.030
0.140
8
100
8.0
1.00
1.0
0.025
0.120
3.20
12
100
8.0
1.00
1.0
0.025
0.120
1.60
3.20
16
100
8.0
1.00
1.0
0.025
0.120
SRF1812P200
2.00
4.00
8
40
8.0
3.00
1.2
0.020
0.080
SRF1812P250/16
2.50
5.00
16
100
8.0
5.00
1.2
0.015
0.100
SRF1812P260
2.60
5.20
8
100
8.0
5.00
1.2
0.015
0.080
SRF1812P300
3.00
6.00
6
100
8.0
5.00
1.2
0.012
0.060
I hold = Hold current: maximum current device will pass without tripping in 25°C still air.
I trip = Trip current: minimum current at which the device will trip in 25°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 (V max)
P d = Power dissipated from device when in the tripped state at 25°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 25°C measured one hour after tripping or reow
soldering of 260°C for 20 sec.
Thermal Derating Chart Hold Current (A)
Part Number
Ambient Operating Temperature
-40°C
-20°C
0°C
25°C
40°C
50°C
60°C
70°C
85°C
SRF1812P010
0.16
0.14
0.12
0.10
0.08
0.07
0.06
0.05
0.03
SRF1812P014
0.23
0.19
0.17
0.14
0.12
0.10
0.09
0.08
0.06
SRF1812P020
0.29
0.26
0.23
0.20
0.17
0.15
0.14
0.12
0.10
SRF1812P020/60
0.29
0.26
0.23
0.20
0.17
0.15
0.14
0.12
0.10
SRF1812P030
0.44
0.39
0.35
0.30
0.26
0.23
0.21
0.18
0.15
SRF1812P035
0.51
0.46
0.41
0.35
0.30
0.27
0.25
0.21
0.18
SRF1812P050
0.77
0.68
0.59
0.50
0.44
0.40
0.37
0.33
0.29
SRF1812P075
1.15
1.01
0.88
0.75
0.65
0.60
0.55
0.49
0.43
SRF1812P075/24
1.15
1.01
0.88
0.75
0.65
0.60
0.55
0.49
0.43
SRF1812P075/33
1.15
1.01
0.88
0.75
0.65
0.60
0.55
0.49
0.43
SRF1812P110
1.59
1.43
1.26
1.10
0.95
0.87
0.80
0.71
0.60
SRF1812P110/16
1.59
1.43
1.26
1.10
0.95
0.87
0.80
0.71
0.60
2 Document Number: P170702J1451
Surface-Mount Devices | 1812 Size
SRF1812 Series
PTC Resettable Fuses
Thermal Derating Chart Hold Current (A) (continued)
Ambient Operating Temperature
Part Number
-40°C
-20°C
0°C
25°C
40°C
50°C
60°C
70°C
85°C
SRF1812P110/24
2.00
1.70
1.40
1.10
0.95
0.88
0.80
0.73
0.61
SRF1812P125
1.80
1.63
1.43
1.25
1.08
0.99
0.91
0.81
0.68
SRF1812P150
2.17
1.95
1.72
1.50
1.30
1.18
1.09
0.97
0.82
SRF1812P150/12
2.17
1.95
1.72
1.50
1.30
1.18
1.09
0.97
0.82
SRF1812P150/16
2.17
1.95
1.72
1.50
1.30
1.18
1.09
0.97
0.82
SRF1812P150/24
2.17
1.95
1.72
1.50
1.30
1.18
1.09
0.97
0.82
SRF1812P160
2.30
2.20
1.90
1.60
1.45
1.30
1.15
1.03
0.91
SRF1812P160/12
2.30
2.20
1.90
1.60
1.45
1.30
1.15
1.03
0.91
SRF1812P160/16
2.30
2.20
1.90
1.60
1.45
1.30
1.15
1.03
0.91
SRF1812P200
3.08
2.71
2.35
2.00
1.80
1.60
1.50
1.40
1.25
SRF1812P250/16
3.85
3.45
3.00
2.50
2.05
1.85
1.75
1.30
1.10
SRF1812P260
4.00
3.52
3.06
2.60
2.34
2.08
1.95
1.39
1.04
SRF1812P300
4.40
3.90
3.50
3.00
2.60
2.30
2.10
1.80
1.50
Temperature Rerating Curve
170%
Percentage of Rated Current
150%
130%
110%
90%
70%
50%
30%
10%
-40 -30 -20
-10
0
10
20
30
Temperature (°C)
3 Document Number: P170702J1451
40
50
60
70
80
Surface-Mount Devices | 1812 Size
SRF1812 Series
PTC Resettable Fuses
Dimensions
A
Top
View
B
C
Recommended Pad Layout (mm)
Side
View
3.45
3.15
Bottom
View
1.78
D
Part Number
4
Document Number: P170702J1451
Marking
A
B
C
D
Min
Max
Min
Max
Min
Max
Min
0.30
SRF1812P010
T010
4.37
4.73
3.07
3.41
0.80
1.20
SRF1812P014
T014
4.37
4.73
3.07
3.41
0.80
1.20
0.30
SRF1812P020
T020
4.37
4.73
3.07
3.41
0.80
1.20
0.30
SRF1812P020/60
T020
4.37
4.73
3.07
3.41
0.80
1.20
0.30
SRF1812P030
T030
4.37
4.73
3.07
3.41
0.80
1.20
0.30
SRF1812P035
T035
4.37
4.73
3.07
3.41
0.80
1.20
0.30
SRF1812P050
T050
4.37
4.73
3.07
3.41
0.60
1.00
0.30
SRF1812P075
T075
4.37
4.73
3.07
3.41
0.60
1.00
0.30
SRF1812P075/24
T075
4.37
4.73
3.07
3.41
0.60
1.00
0.30
SRF1812P075/33
T075
4.37
4.73
3.07
3.41
0.60
1.00
0.30
SRF1812P110
T110
4.37
4.73
3.07
3.41
0.60
1.00
0.30
SRF1812P110/16
T110
4.37
4.73
3.07
3.41
0.60
1.00
0.30
SRF1812P110/24
T110
4.37
4.73
3.07
3.41
0.90
1.30
0.30
SRF1812P125
T125
4.37
4.73
3.07
3.41
0.60
1.00
0.30
SRF1812P150
T150
4.37
4.73
3.07
3.41
0.45
0.85
0.30
SRF1812P150/12
T150
4.37
4.73
3.07
3.41
0.45
0.85
0.30
SRF1812P150/16
T150
4.37
4.73
3.07
3.41
0.45
0.85
0.30
SRF1812P150/24
T150
4.37
4.73
3.07
3.41
1.30
1.80
0.30
SRF1812P160
T160
4.37
4.73
3.07
3.41
0.45
0.85
0.30
SRF1812P160/12
T160
4.37
4.73
3.07
3.41
0.45
0.85
0.30
SRF1812P160/16
T160
4.37
4.73
3.07
3.41
0.45
0.85
0.30
SRF1812P200
T200
4.37
4.73
3.07
3.41
0.70
1.10
0.30
SRF1812P250/16
T250
4.37
4.73
3.07
3.41
0.70
1.10
0.30
SRF1812P260
T260
4.37
4.73
3.07
3.41
0.70
1.10
0.30
SRF1812P300
T300
4.37
4.73
3.07
3.41
0.70
1.10
0.30
Surface-Mount Devices | 1812 Size
SRF1812 Series
PTC Resettable Fuses
Packaging Options
I hold(A)
Quantity
0.1~0.35A, 1.1A/24V
1,500pcs
0.5~1.6A
2,000pcs
1.5A/24V
1,000pcs
2~3A
1,500pcs
Reel packaging per EIA -481-1 standard
© 2017 PROSEMI Inc. All Rights Reserved.
Specifications and features are subject to
change without notice.
www.prosemitech.com
5
Document Number: P170702J1451
The PROSEMI logo, and all other PROSEMI
trademarks are the property of PROSEMI Inc.
All other trademarks are the property of their
respective owners.
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