POLY-FUSE® Resettable PTCs
© 2019 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 02/25/19
Surface Mount > 1206L Series
The 1206L Series PTC provides surface mount overcurrent
protection for applications where space is at a premium
and resettable protection is desired.
Electrical Characteristics
Part Number Marking I hold
(A)
I trip
(A)
V max
(Vdc)
I max
(A)
P d
typ.
(W)
Maximum Time
To Trip Resistance Agency
Approvals
Current
(A) Time
(Sec.)
R min
(Ω)
R 1max
(Ω)
1206L005/60 f6 0.05 0.15 60 10 0.6 0.25 1.50 3.60 20.00 X X
1206L010/60 n6 0.10 0.25 60 10 0.6 0.50 1.50 1.50 10.00 X X
1206L012 A 0.125 0.29 30 100 0.6 1. 0 0 0.20 1.500 6.000 X X
1206L016 B 0.16 0.37 30 100 0.6 1. 0 0 0.30 1.200 4.500 X X
1206L0201 2 C 0.20 0.42 24 100 0.6 8.00 0.10 0.650 2.600 X X
1206L0251D 0.25 0.50 16 100 0.6 8.00 0.08 0.550 2.300 X X
1206L0351E 0.35 0.75 6 100 0.6 8.00 0.10 0.300 1.200 X X
1206L035/16 J 0.35 0.75 16 100 0.6 8.00 0.10 0.300 1.200 X X
1206L035/30 J3 0.35 0.75 30 100 0.6 8.00 0.10 0.30 1.20 X X
1206L0501F 0.50 1. 0 0 6100 0.6 8.00 0.10 0.150 0.700 X X
1206L050/15 M 0.50 1. 0 0 15 100 0.6 8.00 0.10 0.150 0.750 X X
1206L050/24 F2 0.50 1. 0 0 24 100 0.6 8.00 0.10 0.15 0.75 X X
1206L075/13.2 G1 0.75 1.50 13.2 100 0.6 8.00 0.20 0.090 0.350 X X
1206L075/16 GF 0.75 1.50 16 100 0.6 8.00 0.20 0.090 0.2900 X X
1206L075TH1G 0.75 1.50 8 100 0.6 8.00 0.20 0.090 0.290 X X
1206L110TH1H1.10 2.20 8 100 0.8 8.00 0.10 0.040 0.210 X X
1206L150TH1K 1.50 3.00 8 100 0.8 8.00 0.30 0.040 0.120 X X
1206L175 V 1.75 3.50 6 100 0.8 8.00 0.50 0.020 0.090 X X
1206L200 L 2.00 3.50 6 100 0.8 8.00 1.50 0.018 0.080 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.
Description
Agency Approvals
Features
Applications
• RoHS compliant, lead-free
and halogen-free
• Fast response to fault
currents
• Compact design saves
board space
• Low resistance
• Low-profile
• Compatible with high
temperature solders
• 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
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.
1206L Series RoHS
AGENCY AGENCY FILE NUMBER
E183209
R50119118
POLY-FUSE® Resettable PTCs
© 2019 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 02/25/19
Surface Mount > 1206L Series
Ambient Operation Temperature
-40°C -20°C 0°C 20°C 40°C 50°C 60°C 70°C 85°C
Part Number Hold Current (A)
1206L005/60 0.076 0.068 0.060 0.050 0.043 0.039 0.034 0.030 0.023
1206L010/60 0.15 0.14 0.12 0.10 0.083 0.074 0.065 0.056 0.042
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
1206L035/30 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
1206L050/24 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 1.14 1.01 0.88 0.75 0.65 0.59 0.54 0.49 0.41
1206L075TH 1.14 1.01 0.88 0.75 0.65 0.59 0.54 0.49 0.41
1206L110TH 1.64 1.46 1.30 1. 10 0.92 0.83 0.80 0.65 0.52
1206L150TH 2.20 1.99 1.77 1.50 1.34 1.23 1.10 1.01 0.84
1206L175 2.50 2.25 2.00 1.75 1.55 1.45 1.35 1.25 1. 10
1206L200 2.60 2.44 2.35 2.00 1.78 1.67 1.50 1.45 1.10
Temperature Rerating
Temperature Rerating Curve
-40 -30 -20 -10 01020304050607080
10%
30%
50%
70%
90%
110%
130%
150%
170%
Temperature (°C)
Percentage of Rated Current
Average Time Current Curves
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.
0.01
0.1
1
10
100
0.1 110
Time in Seconds
Current in Amperes
1206L
0.12A
0.16A
0.20A
0.25A
0.35A/30V
5V
0.50A/24V 5V
0.75A
0.75A/13.2V
1.1A
1.5A
1.75A
2.0A
0.05A/60V
0.10A/60V
0.35A, 0.35A/1
0.50A, 0.50A/1
Notes: The temperature rerating data is only for reference, please contact Littelfuse technical support for detail temperature rerating information.
Additional Information
Datasheet Samples
Resources Samples
POLY-FUSE® Resettable PTCs
© 2019 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 02/25/19
Surface Mount > 1206L Series
Environmental Specifications
Soldering Parameters
Operating/Storage
Temperature -40°C to +85°C
Maximum Device Surface
Temperature 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 Sensivity Level Level 1, J–STD–020
Physical Specifications
Terminal Material Solder-Plated Copper (Solder Material:
Matte Tin (Sn))
Lead Solderability Meets EIA Specification RS186-9E,
ANSI/J-STD-002 Category 3.
Time
Temperature
TP
TL
TS(max)
TS(min)
25
tP
tL
tS
time to peak temperature
Preheat
P
reheat
Ramp-up
R
amp-up
Ramp-down
R
amp-d
o
Critical Zone
tL to tP
Profile Feature Pb-Free Assembly
Average Ramp-Up Rate (TS(max) to TP) 3°C/second max
Pre Heat:
Temperature Min (Ts(min))150°C
Temperature Max (Ts(max))200°C
Time (Min to Max) (ts)60 – 180 secs
Time Maintained
Above:
Temperature (TL)217°C
Temperature (tL)60 – 150 seconds
Peak / Classification Temperature (TP) 260+0/-5 °C
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.
-- 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 (0.010 inch)
-- Devices can be cleaned using standard industry methods and solvents
-- Devices can be reworked using the standard industry practices
POLY-FUSE® Resettable PTCs
© 2019 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 02/25/19
Surface Mount > 1206L Series
Dimensions
Part
Number
A B C D E
Inches mm Inches mm Inches mm Inches mm Inches mm
Min Max Min Max Min Max Min Max Min Max Min Max Min Max Min Max Min Max Min Max
1206L005/60 0.03 0.05 0.65 1.25
1206L010/60 0.03 0.05 0.65 1.25
1206L012
0.12 0.13 3.00 3.40 0.06 0.07 1.50 1.80
0.03 0.06 0.65 1.45
0.01 0.03 0.25 0.75 0.002 0.018 0.05 0.45
1206L016 0.03 0.06 0.65 1.45
1206L020 0.02 0.04 0.50 1. 0 0
1206L025 0.02 0.04 0.5 1. 0 0
1206L035 0.02 0.03 0.45 0.75
1206L035/16 0.02 0.03 0.45 0.75
1206L035/30 0.02 0.04 0.50 1. 0 0
1206L050 0.02 0.03 0.45 0.75
1206L050/15 0.02 0.03 0.45 0.75
1206L050/24 0.03 0.05 0.75 1.25
1206L075/13.2 0.03 0.05 0.75 1.25
1206L075/16 0.03 0.05 0.75 1.25
1206L075TH 0.02 0.03 0.40 0.75
1206L110TH 0.01 0.02 0.30 0.60
1206L150TH 0.02 0.04 0.50 1.0 0
1206L175 0.03 0.08 0.80 1.80
1206L200 0.03 0.07 0.80 1.60
C
Top
View
Pad
Layout
Side
View
Bottom
View
1.80 mm
(.071)
1.80 mm
(.071)
1. 00 mm
(.040)
D
MARKING CODE VARIES
WITH AMPERAGE RATING
(SEE ELECTRICAL CHARACTERISTICS CHART)
SHOWN IS 1.0 AMP RATING
E
A
B
N
N
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.
POLY-FUSE® Resettable PTCs
© 2019 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 02/25/19
Surface Mount > 1206L Series
Part Ordering Number System
PACKAGING STYLE
SIZE
L: LITTELFUSE SURFACE MOUNT PPTC
I
HOLD
HOLD CURRENT CODE
(Refer to Electrical Characteristics Table)
/XX: SPECIAL VOLTAGE RATING
(Not applicable to all parts. Refer
to Electrical Characteristics Table)
QUANTITY CODE: K=10,000 Y=4,000 W=3,000 P=2,000
R: Tape & Reel
SERIES
1206 L 380 /12 TH Y R
THIN PROFILE
(Not applicable to all parts)
-A: Automotive grade
Blank: Standard version
- A
Packaging Options
Part Number Ordering Number Halogen Free I hold (A) I hold Code Packaging Option Quantity Quantity/Pack Code
1206L005/60 1206L005/60WR Yes 0.05 050 Tape and Reel 3000 WR
1206L010/60 1206L010/60WR Yes 0.10 100 Tape and Reel 3000 WR
1206L012 1206L012WR Yes 0.125 012 Tape and Reel 3000 WR
1206L016 1206L016WR Yes 0.16 016 Tape and Reel 3000 WR
1206L020 1206L020YR Yes 0.20 020 Tape and Reel 4000 YR
1206L025 1206L025YR Yes 0.25 025 Tape and Reel 4000 YR
1206L035 1206L035YR Yes 0.35 035 Tape and Reel 4000 YR
1206L035/16 1206L035/16YR Yes 0.35 035 Tape and Reel 4000 YR
1206L035/30 1206L035/30WR Ye s 0.35 350 Tape and Reel 3000 WR
1206L050 1206L050YR Yes 0.50 050 Tape and Reel 4000 YR
1206L050/15 1206L050/15YR Yes 0.50 050 Tape and Reel 4000 YR
1206L050/24 1206L050/24WR Ye s 0.50 500 Tape and Reel 3000 WR
1206L075/13.2 1206L075/13.2WR Yes 0.75 075 Tape and Reel 3000 WR
1206L075/16 1206L075/16WR Yes 0.08 75 Tape and Reel 3,000 WR
1206L075TH 1206L075THYR Yes 0.75 075 Tape and Reel 4000 YR
1206L110TH 1206L110THYR Yes 1.10 110 Tape and Reel 4000 YR
1206L150TH 1206L150THWR Yes 1.50 150 Tape and Reel 3000 WR
1206L175 1206L175PR Ye s 1.75 175 Tape and Reel 2000 PR
1206L200 1206L200PR Yes 2.00 200 Tape and Reel 2000 PR
POLY-FUSE® Resettable PTCs
© 2019 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 02/25/19
Surface Mount > 1206L Series
TAPE SPECIFICATIONS: EIA-481-1 (mm)
REEL DIMENSIONS:
EIA-481-1 (mm)
Packaging Code “YR”:
1206L020
1206L025
1206L035
1206L035/16
1206L050
1206L050/15
1206L075TH
1206L110TH
Packaging Code “WR”:
1206L005/60
1206L010/60
1206L012
1206L016
1206L035/30
1206L050/24
1206L075/13.6
1206L150TH
Packaging Code “PR”:
1206L175
1206L200
W8.20+0.10/-0.30 8.15+0.15/-0.30 8.20+0.10/-0.30 CØ178+/−1.0
F3.50+/- 0.05 3.50+/- 0.05 3.50+/- 0.05 DØ60.2+/−0.5
E11.75+/- 0.10 1.75+/- 0.10 1.75+/- 0.10 H11.0+/- 0.5
D01.55+/- 0.05 1.55+/- 0.05 1.55+/- 0.05 W9.0+/- 1.5
D11.00+/- 0.10 1.00+/- 0.10 1.00+/- 0.10
P04.00+/- 0.10 4.00+/- 0.10 4.00+/- 0.10
P14.00+/- 0.10 4.00+/- 0.10 4.00+/- 0.10
P22.00+/- 0.05 2.00+/- 0.05 2.00+/- 0.05
A01.95+/- 0.10 1.92+/- 0.10 1.95+/- 0.10
B03.65+/- 0.10 3.65+/- 0.10 3.65+/- 0.10
T0.20+/- 0.10 0.25+/- 0.10 0.25+/- 0.10
K00.87+/- 0.10 1.30+/- 0.10 1.70+/- 0.10
Leader
min. 390 390 390
Trailer
min. 160 160 160
Tape and Reel Specifications
W
C
D
H
D1
K0B0
D1
T
F
W
E1
P2
D0
P0
P1
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.
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Littelfuse:
1206L160 1206L012WR 1206L016WR 1206L020YR 1206L025YR 1206L035YR 1206L050/15YR 1206L050YR
1206L075WR 1206L100WR 1206L110WR 1206L150PR 1210L020WR 1206L160PR 1206L035/16YR
1206L075/13.2WR 1206L200PR 1206L020 1206L050 1206L110 1206L025 1206L035/15YR 1210L010WR
1210L005WR 1210L035YR 1206L035YRT 1206L075WRT 1206L110WRT 1206L025YRT 1206L020YRT
1206L150WRT 1206L160WRT 1206L050WRT 1206L160WR 1206L150WR 1206L075THYR 1206L110THYR
1206L150THWR 1206L160ZR 1206L175PR 1206L110/16WR 1206L075/16WR 1206L110/12WR