Littelfuse 1206L User Manual
POLY-FUSE® Resettable PTCs
Surface Mount > 1206L Series
1206L Series
Agency Approvals
AGENCY AGENCY FILE NUMBER
E183209
R50119118
RoHS
Description
The 1206L Series PTC provides surface mount overcurrent
protection for applications where space is at a premium
and resettable protection is desired.
Features
• RoHS compliant, lead-free
and halogen-free
• Fast response to fault
currents
• Low resistance
• Low-prole
• Compatible with high
temperature solders
• Compact design saves
board space
Applications
• USB peripherals
• Disk drives
• CD-ROMs
• Plug and play protection
for motherboards and
peripherals
• Mobile phones - battery
and port protection
• Disk drives
• PDAs / digital cameras
• Game console port
protection
1206L Series
Electrical Characteristics
Maximum Time
I
V
I
hold
(A)
1
1
1
1
Marking
C 0.20 0.42 24 10 0 0.6 8.00 0.10 0.650 2.60 X X
D 0.25 0.50 16 10 0 0.6 8.00 0.08 0.550 2.30 X X
E 0.35 0.75 6 10 0 0.6 8.00 0.10 0.300 1.20 X X
F 0.50 1. 0 0 6 100 0.6 8.00 0.10 0.150 0.70 X X
1
G 0.75 1.50 8 100 0.6 8.00 0.20 0.090 0.29 X X
1
H 1. 10 2.20 8 100 0.8 8.00 0.10 0.040 0.21 X X
1
K 1.50 3.00 8 100 0.8 8.00 0.30 0.040 0.12 X X
Part Number
1206L012 A 0.125 0.29 30 10 0 0.6 1.0 0 0.20 1.500 6.00 X X
1206L016 B 0.16 0.37 30 10 0 0.6 1.0 0 0.30 1.200 4.50 X X
1206L020
1206L025
1206L035
1206L035/16 J 0.35 0.75 16 10 0 0.6 8.00 0.10 0.300 1.20 X X
1206L050
1206L050/15 M 0.50 1. 0 0 15 10 0 0.6 8.00 0.10 0.150 0.75 X X
1206L075/13.2 G1 0.75 1.50 13.2 100 0.6 8.00 0.20 0.090 0.35 X X
1206L075/16 GF 0.75 1.50 16 100 0.6 8.00 0.20 0.090 0.290 X X
1206L075TH
1206L110TH
1206L150TH
1206L175 V 1.75 3.50 6 10 0 0.8 8.00 0.50 0.020 0.09 X X
1206L200 L 2.00 3.50 6 100 0.8 8.00 1.50 0.018 0.08 X X
I
= Hold current: maximum current device will pass without tripping in 20°C still air.
hold
= Trip current: minimum current at which the device will trip in 20°C still air.
I
trip
= Maximum voltage device can withstand without damage at rated current (I max)
V
max
= Maximum fault current device can withstand without damage at rated voltage (V
I
max
Caution: Operation beyond the specied rating may result in damage and possible arcing and ame.
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.
(A)
trip
(Vdc)
max
I
(A)
max
P d
typ.
(W)
)
max
To Trip
Current
(A)
P d = Power dissipated from device when in the tripped state at 20°C still air.
= Minimum resistance of device in initial (un-soldered) state.
R
min
= Typical resistance of device in initial (un-soldered) state.
R
typ
= Maximum resistance of device at 20°C measured one hour after tripping or reflow
R
1max
Time
(Sec.)
soldering of 260°C for 20 sec.
Resistance
R
min
(Ω)
R
1max
(Ω)
Agency
Approvals
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 11/05/13
POLY-FUSE® Resettable PTCs
0.01
0.1
1
10
100
0.1 110
Time in Seconds
Current in Amperes
1210L
0.05A
0.10A
0.20A
0.35A
0.50A
0.75A
0.75A/24
1. 10 A
1.50A
1.75A
2.00A
11
Surface Mount > 1206L Series
Temperature Rerating
Ambient Operation Temperature
-40°C -20°C 0°C 20°C 40°C 50°C 60°C 70°C 85°C
Part Number
1206L012 0.18 0.16 0.14 0.125 0.10 0.09 0.08 0.07 0.05
1206L016 0.22 0.20 0.18 0.16 0.14 0.12 0.10 0.09 0.08
1206L020 0.28 0.25 0.23 0.20 0.17 0.15 0.14 0.12 0.09
1206L025 0.37 0.33 0.29 0.25 0.22 0.20 0.17 0.15 0.12
1206L035 0.50 0.45 0.40 0.35 0.30 0.27 0.24 0.21 0.15
1206L035/16 0.50 0.45 0.40 0.35 0.30 0.27 0.24 0.21 0.15
1206L050 0.71 0.64 0.57 0.50 0.42 0.39 0.35 0.31 0.25
1206L050/15 0.71 0.64 0.57 0.50 0.42 0.39 0.35 0.31 0.25
1206L075/13.2 1. 14 1.04 0.88 0.75 0.65 0.59 0.54 0.49 0.41
1206L075/16 1. 0 1 0.94 0.86 0.75 0.65 0.60 0.54 0.46 0.37
1206L075TH 1.14 1.01 0.88 0.75 0.65 0.59 0.54 0.49 0.41
1206L110TH 1.52 1.37 1.25 1. 10 0.92 0.82 0.75 0.64 0.52
1206L150TH 2.18 1.94 1.72 1.50 1.28 1.17 1.06 0.96 0.77
1206L175 2.50 2.25 2.00 1.75 1.55 1.45 1.35 1.25 1. 1 0
1206L200 2.60 2.44 2.35 2.00 1.78 1.67 1.50 1.45 1.10
Notes: The temperature rerating data is only for reference, please contact Littelfuse technical support for detail temperature rerating information.
Hold Current (A)
Average Time Current Curves
0.12A
0.16A
0.20A
0.25A
0.35A, 0.35A/15V
0.50A, 0.50A/15V
100
10
1
Time in Seconds
0.1
0.01
0.1
Current in Amperes
0.75A
0.75A/13.2V
1.1A
1.5A
1.75A
2.0A
1206L
Temperature Rerating Curve
170%
150%
130%
110%
90%
70%
50%
Percentage of Rated Current
30%
10%
-40 -30 -20 -10 01020304050607080
0
Temperature (°C)
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.
Specifications are subject to change without notice.
© 2013 Littelfuse, Inc.
Revised: 11/05/13
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