POLY-FUSE
®
Resettable PTCs
Surface Mount > 1206L Series
1206L Series
Description
RoHS
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
• Compact design saves
board space
Agency Approvals
AGENCY
AGENCY FILE NUMBER
• Low resistance
• Low-profile
• Compatible with high
temperature solders
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
E183209
R50119118
Electrical Characteristics
I
hold
(A)
0.05
0.10
0.125
0.16
0.20
0.25
0.35
0.35
0.35
0.50
0.50
0.50
0.75
0.75
0.75
1.10
1.50
1.75
2.00
Part Number
1206L005/60
1206L010/60
1206L012
1206L016
1206L020
12
1
1
Marking
f6
n6
A
B
C
D
E
J
J3
F
M
F2
G1
GF
G
H
K
V
L
I
trip
(A)
0.15
0.25
0.29
0.37
0.42
0.50
0.75
0.75
0.75
1.00
1.00
1.00
1.50
1.50
1.50
2.20
3.00
3.50
3.50
V
max
(Vdc)
60
60
30
30
24
16
6
16
30
6
15
24
13.2
16
8
8
8
6
6
I
max
(A)
10
10
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
P
d
typ.
(W)
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.8
0.8
0.8
0.8
Maximum Time
To Trip
Current
Time
(A)
(Sec.)
0.25
0.50
1.00
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
1.50
1.50
0.20
0.30
0.10
0.08
0.10
0.10
0.10
0.10
0.10
0.10
0.20
0.20
0.20
0.10
0.30
0.50
1.50
Resistance
R
min
(Ω)
3.60
1.50
1.500
1.200
0.650
0.550
0.300
0.300
0.30
0.150
0.150
0.15
0.090
0.090
0.090
0.040
0.040
0.020
0.018
Agency
Approvals
R
1max
(Ω)
20.00
10.00
6.000
4.500
2.600
2.300
1.200
1.200
1.20
0.700
0.750
0.75
0.350
0.2900
0.290
0.210
0.120
0.090
0.080
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
1206L025
1206L035
1206L035/16
1206L035/30
1206L050
1
1206L050/15
1206L050/24
1206L075/13.2
1206L075/16
1206L075TH
1206L110TH
1
1
1
1206L150TH
1206L175
1206L200
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 (V
max
)
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 tested and complied with AEC-Q200.
© 2019 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 02/25/19
POLY-FUSE
®
Resettable PTCs
Surface Mount > 1206L Series
Temperature Rerating
Ambient Operation Temperature
-40°C
Part Number
1206L005/60
1206L010/60
1206L012
1206L016
1206L020
1206L025
1206L035
1206L035/16
1206L035/30
1206L050
1206L050/15
1206L050/24
1206L075/13.2
1206L075/16
1206L075TH
1206L110TH
1206L150TH
1206L175
1206L200
0.076
0.15
0.18
0.22
0.28
0.37
0.50
0.50
0.50
0.71
0.71
0.71
1.14
1.14
1.14
1.64
2.20
2.50
2.60
0.068
0.14
0.16
0.20
0.25
0.33
0.45
0.45
0.45
0.64
0.64
0.64
1.04
1.01
1.01
1.46
1.99
2.25
2.44
0.060
0.12
0.14
0.18
0.23
0.29
0.40
0.40
0.40
0.57
0.57
0.57
0.88
0.88
0.88
1.30
1.77
2.00
2.35
0.050
0.10
0.125
0.16
0.20
0.25
0.35
0.35
0.35
0.50
0.50
0.50
0.75
0.75
0.75
1.10
1.50
1.75
2.00
-20°C
0°C
20°C
40°C
Hold Current (A)
0.043
0.083
0.10
0.14
0.17
0.22
0.30
0.30
0.30
0.42
0.42
0.42
0.65
0.65
0.65
0.92
1.34
1.55
1.78
50°C
0.039
0.074
0.09
0.12
0.15
0.20
0.27
0.27
0.27
0.39
0.39
0.39
0.59
0.59
0.59
0.83
1.23
1.45
1.67
60°C
0.034
0.065
0.08
0.10
0.14
0.17
0.24
0.24
0.24
0.35
0.35
0.35
0.54
0.54
0.54
0.80
1.10
1.35
1.50
70°C
0.030
0.056
0.07
0.09
0.12
0.15
0.21
0.21
0.21
0.31
0.31
0.31
0.49
0.49
0.49
0.65
1.01
1.25
1.45
85°C
0.023
0.042
0.05
0.08
0.09
0.12
0.15
0.15
0.15
0.25
0.25
0.25
0.41
0.41
0.41
0.52
0.84
1.10
1.10
Notes: The temperature rerating data is only for reference, please contact Littelfuse technical support for detail temperature rerating information.
Average Time Current Curves
0.05A/60V
0.10A/60V
0.12A
0.16A
0.20A
0.25A
0.35A/30V
0.35A, 0.35A/15V
0.50A/24V
5V
0.50A, 0.50A/1
0.75A
0.75A/13.2V
1.1A
1.5A
1.75A
2.0A
Temperature Rerating Curve
170%
150%
Percentage of Rated Current
130%
110%
90%
70%
50%
30%
100
1206L
10
10%
-40 -30 -20
-10
0
10
20 30
40
Temperature (°C)
50
60
70
80
Time in Seconds
1
Additional Information
0.1
Datasheet
0.01
0.1
1
10
Resources
Samples
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.
© 2019 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 02/25/19
POLY-FUSE
®
Resettable PTCs
Surface Mount > 1206L Series
Soldering Parameters
Profile Feature
Average Ramp-Up Rate (T
S(max)
to T
P
)
Temperature Min (T
s(min)
)
Pb-Free Assembly
3°C/second max
150°C
200°C
T
P
T
L
Ramp-up
t
P
Critical Zone
t
L
to t
P
Pre Heat:
Temperature Max (T
s(max)
)
Time (Min to Max) (t
s
)
T
S(max)
t
L
Ramp-do
Ramp-down
Preheat
Time Maintained
Temperature (T
L
)
Above:
Temperature (t
L
)
Peak / Classification Temperature (T
P
)
Time within 5°C of actual peak
Temperature (t
p
)
Ramp-down Rate
Time 25°C to peak Temperature (T
P
)
217°C
60 – 150 seconds
260
+0/-5
°C
20 – 40 seconds
6°C/second max
8 minutes Max.
Temperature
60 – 180 secs
T
S(min)
25
t
S
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, N
2
environment
for lead
-- Recommended maximum paste thickness is 0.25mm (0.010inch)
-- Devices can be cleaned using standard industry methods and solvents
-- Devices can be reworked using the standard industry practices
Physical Specifications
Solder-Plated Copper (Solder Material:
Matte Tin (Sn))
Meets EIA Specification RS186-9E,
ANSI/J-STD-002 Category 3.
Environmental Specifications
Operating/Storage
Temperature
Maximum Device Surface
Temperature in Tripped
State
Passive Aging
Humidity Aging
Terminal Material
Lead Solderability
-40°C to +85°C
125°C
+85°C, 1000 hours
-/+5% typical resistance change
+85°C, 85%, R.H.,1000 hours
-/+5% typical resistance change
MIL–STD–202, Method 107
+85°C/-40°C 20 times
-30% typical resistance change
MIL–STD–202, Method 215
No change
MIL–STD–883, Method 2007
,
Condition A
No change
Level 1, J–STD–020
Thermal Shock
Solvent Resistance
Vibration
Moisture Sensivity Level
© 2019 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 02/25/19
POLY-FUSE
®
Resettable PTCs
Surface Mount > 1206L Series
Dimensions
MARKING CODE VARIES
WITH AMPERAGE RATING
(SEE ELECTRICAL CHARACTERISTICS CHART)
SHOWN IS 1.0 AMP RATING
A
C
Top
View
N
N
D
B
Side
View
Bottom
View
Pad
Layout
E
1.00 mm
(.040)
1.80 mm
(.071)
1.80 mm
(.071)
Part
Number
1206L005/60
1206L010/60
1206L012
1206L016
1206L020
1206L025
1206L035
1206L035/16
1206L035/30
1206L050
1206L050/15
1206L050/24
1206L075/13.2
1206L075/16
1206L075TH
1206L110TH
1206L150TH
1206L175
1206L200
A
Inches
Min
Max
B
mm
Min
Max
C
mm
Inches
mm
Inches
Min
Min Max Min Max Min Max
D
mm
Min
Max
E
Inches
Min
Max
Inches
Min
Max
mm
Min
Max
Max
0.03 0.05 0.65 1.25
0.03 0.05 0.65 1.25
0.03 0.06 0.65 1.45
0.03 0.06 0.65 1.45
0.02 0.04 0.50 1.00
0.02 0.04 0.5 1.00
0.02 0.03 0.45 0.75
0.02 0.03 0.45 0.75
0.02 0.04 0.50 1.00
0.02 0.03 0.45 0.75
0.12 0.13 3.00 3.40 0.06 0.07 1.50 1.80 0.02 0.03 0.45 0.75
0.03 0.05 0.75 1.25
0.03 0.05 0.75 1.25
0.03 0.05 0.75 1.25
0.02 0.03 0.40 0.75
0.01 0.02 0.30 0.60
0.02 0.04 0.50 1.00
0.03 0.08 0.80 1.80
0.03 0.07 0.80 1.60
0.01
0.03
0.25 0.75 0.002 0.018 0.05
0.45
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.
© 2019 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 02/25/19
POLY-FUSE
®
Resettable PTCs
Surface Mount > 1206L Series
Part Ordering Number System
1206 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 Options
Part Number
1206L005/60
1206L010/60
1206L012
1206L016
1206L020
1206L025
1206L035
1206L035/16
1206L035/30
1206L050
1206L050/15
1206L050/24
1206L075/13.2
1206L075/16
1206L075TH
1206L110TH
1206L150TH
1206L175
1206L200
Ordering Number
1206L005/60WR
1206L010/60WR
1206L012WR
1206L016WR
1206L020YR
1206L025YR
1206L035YR
1206L035/16YR
1206L035/30WR
1206L050YR
1206L050/15YR
1206L050/24WR
1206L075/13.2WR
1206L075/16WR
1206L075THYR
1206L110THYR
1206L150THWR
1206L175PR
1206L200PR
Halogen Free
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
I
hold
(A)
0.05
0.10
0.125
0.16
0.20
0.25
0.35
0.35
0.35
0.50
0.50
0.50
0.75
0.08
0.75
1.10
1.50
1.75
2.00
I
hold
Code
050
100
012
016
020
025
035
035
350
050
050
500
075
75
075
110
150
175
200
Packaging Option
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
Quantity
3000
3000
3000
3000
4000
4000
4000
4000
3000
4000
4000
3000
3000
3,000
4000
4000
3000
2000
2000
Quantity/Pack Code
WR
WR
WR
WR
YR
YR
YR
YR
WR
YR
YR
WR
WR
WR
YR
YR
WR
PR
PR
© 2019 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 02/25/19
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