Littelfuse 60R User Manual
60R Series
POLYFUSE® Resettable PTCs
Radial Leaded > 60R Series
Description
The 60R Series radial leaded device is designed to provide
overcurrent protection for (≤60V) applications where space
is not a concern and resettable protection
is preferred.
Features
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epoxy polymer insulating
material meets UL 94V-0
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Free and Halogen-Free*
requirements
Agency Approvals
AGENCY AGENCY FILE NUMBER
E183209
R50119318
Applications
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and peripherals
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Electrical Characteristics
Part Number
I
hold
(A)
I
(A)
d
Current
Maximum Time
To Trip
Time
(A)
(Sec.)
trip
V
max
(Vdc)
I
(A)
max
P
typ.
(W)
Resistance
R
min
(Ω)
R
1max
(Ω)
60R010 0.10 0.20 60 40 0.38 0.50 4.00 2.500 7.500
60R017 0.17 0.34 60 40 0.48 0.85 3.00 3.300 8.000
60R020 0.20 0.40 60 40 0.41 1.00 2.20 1.830 4.400
60R025 0.25 0.50 60 40 0.45 1.25 2.50 1.250 3.000
60R030 0.30 0.60 60 40 0.49 1.50 3.00 0.880 2.100
60R040 0.40 0.80 60 40 0.56 2.00 3.80 0.550 1.290
60R050 0.50 1.00 60 40 0.77 2.50 4.00 0.500 1.170
60R065 0.65 1.30 60 40 0.88 3.25 5.30 0.310 0.720
60R075 0.75 1.50 60 40 0.92 3.75 6.30 0.250 0.600
60R090 0.90 1.80 60 40 0.99 4.50 7.20 0.200 0.470
60R110 1.10 2.20 60 40 1.50 5.50 8.20 0.150 0.380
60R135 1.35 2.70 60 40 1.70 6.75 9.60 0.120 0.300
60R160 1.60 3.20 60 40 1.90 8.00 11.40 0.090 0.220
60R185 1.85 3.70 60 40 2.10 9.25 12.60 0.080 0.190
60R250 2.50 5.00 60 40 2.50 12.50 15.60 0.050 0.130
60R300 3.00 6.00 60 40 2.80 15.00 19.80 0.040 0.100
60R375 3.75 7.50 60 40 3.20 18.75 24.00 0.030 0.080
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
= Power dissipated from device when in the tripped state at 20°C still air.
P
d
* Effective January 1, 2010, all 60R PTC products will be manufactured Halogen Free (HF). Existing Non-Halogen Free 60R PTC products may continue to be sold, until supplies are depleted.
R
= Minimum resistance of device in initial (un-soldered) state.
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
)
max
soldering of 260°C for 20 sec.
Caution: Operation beyond the specified rating may result in damage and possible arcing
and flame.
Agency
Approvals
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
60R Series
© 2010 Littelfuse, Inc
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/60R.html for current information.
83
Revised: July 12, 2010
60R Series
POLYFUSE® Resettable PTCs
Radial Leaded > 60R Series
Temperature Rerating
Ambient Operation Temperature
-40°C -20°C 0°C 23°C 40°C 50°C 60°C 70°C 85°C
Part Number
60R010 0.16 0.14 0.12 0.10 0.08 0.07 0.06 0.05 0.04
60R017 0.26 0.23 0.20 0.17 0.14 0.12 0.11 0.09 0.07
60R020 0.31 0.27 0.24 0.20 0.16 0.14 0.13 0.11 0.08
60R025 0.39 0.34 0.30 0.25 0.20 0.18 0.16 0.14 0.10
60R030 0.47 0.41 0.36 0.30 0.24 0.22 0.19 0.16 0.12
60R040 0.62 0.54 0.48 0.40 0.32 0.29 0.25 0.22 0.16
60R050 0.78 0.68 0.60 0.50 0.41 0.36 0.32 0.27 0.20
60R065 1.01 0.88 0.77 0.65 0.53 0.47 0.41 0.35 0.26
60R075 1.16 1.02 0.89 0.75 0.61 0.54 0.47 0.41 0.30
60R090 1.40 1.22 1.07 0.90 0.73 0.65 0.57 0.49 0.36
60R110 1.71 1.50 1.31 1.10 0.89 0.79 0.69 0.59 0.44
60R135 2.09 1.84 1.61 1.35 1.09 0.97 0.85 0.73 0.54
60R160 2.48 2.18 1.90 1.60 1.30 1.15 1.01 0.86 0.64
60R185 2.87 2.52 2.20 1.85 1.50 1.33 1.17 1.00 0.74
60R250 3.88 3.40 2.98 2.50 2.03 1.80 1.58 1.35 1.00
60R300 4.65 4.08 3.57 3.00 2.43 2.16 1.89 1.62 1.20
60R375 5.81 5.10 4.46 3.75 3.04 2.70 2.36 2.03 1.50
Hold Current (A)
0.10A
0.17A
0.30A
0.40A
0.20A
0.25A
0.50A
0.65A
0.75A
0.90A
1.10A
1.35A
1.60A
1.85A
2.50A
100
10
1
Time in Seconds
0.1
0.01
0.1 1 10 100
Current in Amperes
3.00A
3.75A
60R
Temperature Rerating CurveAverage Time Current Curves
170%
150%
130%
110%
90%
70%
50%
Percentage of Rated Current
30%
10%
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80
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.
60R Series
Revised: July 12, 2010
84
Please refer to www.littelfuse.com/series/60R.html for current information.
Specifications are subject to change without notice.
© 2010 Littelfuse, Inc.
Soldering Parameters - Wave Soldering
Refer to the condition
recommended by the
Pre-Heating Zone
Soldering Zone
Cooling Zone
flux manufacturer.
Max. ramping rate
should not exceed 4°C/
Sec.
Max. solder
temperature should not
exceed 260°C
Cooling by natural
convection in air.
POLYFUSE® Resettable PTCs
Radial Leaded > 60R Series
260
220
190
160
Temperature (°C)
0
Preheating
60 min.
Soldering Cooling
5 max.
Time(s)
Physical Specifications
Lead Material
Soldering
Characteristics
Insulating Material
Device Labeling
.20-.40A: Tin-plated Copper clad steel
.50-3.75A: Tin-plated Copper
Solderability per MIL–STD–202,
Method 208E
Cured, flame retardant epoxy polymer
meets UL94V-0 requirements.
Marked with ‘LF’, voltage, current rating,
and date code.
Environmental Specifications
Operating/Storage
Temperature
Maximum Device Surface
Temperature in Tripped State
Passive Aging
Humidity Aging
Thermal Shock
Solvent Resistance MIL–STD–202, Method 215F
Moisture Resistance Level Level 1, J–STD–020C
-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
+85°C to -40°C 10 times
-/+ 5% typical resistance
change
60R Series
© 2010 Littelfuse, Inc
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/60R.html for current information.
85
Revised: July 12, 2010
60R Series
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