Radial Lead Resettable Polymer PTCs
SC6 Series
Description
SC6 series radial leaded PTCs are designed to provide
resettable over-current protection for USB, Low voltage
electrical equipment applications. With maximum 6 volts and
maximum 40-ampere short circuit rating.
Features
u
u
u
u
u
RoHS compliant, Lead-Free and Halogen-Free
40A short circuit rating
6V operating voltage
Fast time-to-trip
Meets all USB protection requirements
Applicable
u
u
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Computers and peripherals
USB hubs ,ports and peripherals
Power ports
General electronics
Electrical Parameters
Maximum Time
To Trip
Current
(A)
2.50
3.25
3.75
4.50
5.50
6.00
6.75
8.00
9.25
12.5
Time
(Sec.)
3.8
4.5
5.2
5.9
6.6
7.0
7.3
8.0
8.7
10.3
R
min
(mΩ)
200
120
110
90
70
70
55
45
40
27
Resistance
R
max
(mΩ)
450
270
230
180
140
140
110
90
80
55
R
1max
(mΩ)
675
400
345
270
210
210
150
115
100
70
Part Number
I
hold
(A)
I
trip
(A)
V
max
(Vdc)
6
6
6
6
6
6
6
6
6
6
I
max
(A)
40
40
40
40
40
40
40
40
40
40
P
dtyp.
(W)
0.45
0.50
0.55
0.60
0.70
0.75
0.80
0.90
1.00
1.20
SC6-050
SC6-065
SC6-075
SC6-090
SC6-110
SC6-120
SC6-135
SC6-160
SC6-185
SC6-250
0.50
0.65
0.75
0.90
1.10
1.20
1.35
1.60
1.85
2.50
1.0
1.3
1.5
1.8
2.2
2.4
2.7
3.2
3.7
5.0
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
dtyp.
= 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
max
= Maximum resistance of device in initial (un-soldered) state.
R
1max
= Maximum resistance of device at 25°C measured one hour after tripping.
Caution: Operation beyond the specified rating may result in damage and possible arcing and flame.
SOCAY Electronics Co., Ltd.
Revision September 12, 2013
www.socay.com
1/4
@ SOCAY Electronics Co., Ltd. 2013
Specifications are subject to change without notice.
Please refer to www.socay.com for current information.
Radial Lead Resettable Polymer PTCs
SC6 Series
Temperature Rerating Chart
–
I
hold
(A)
Ambient Operation Temperature
Part Number
-40°C
-20°C
0°C
25°C
40°C
Hold Current (A)
SC6-050
SC6-065
SC6-075
SC6-090
SC6-110
SC6-120
SC6-135
SC6-160
SC6-185
SC6-250
0.73
0.94
1.09
1.31
1.60
1.74
1.96
2.32
2.68
3.63
0.65
0.85
0.98
1.17
1.43
1.56
1.76
2.08
2.41
3.25
0.58
0.75
0.86
1.04
1.27
1.38
1.55
1.84
2.13
2.88
0.50
0.65
0.75
0.90
1.10
1.20
1.35
1.60
1.85
2.50
0.42
0.54
0.62
0.75
0.91
1.00
1.12
1.33
1.54
2.08
0.39
0.50
0.58
0.69
0.85
0.92
1.04
1.23
1.42
1.93
0.34
0.44
0.51
0.61
0.75
0.82
0.92
1.09
1.26
1.70
0.31
0.40
0.46
0.55
0.67
0.73
0.82
0.98
1.13
1.53
0.26
0.34
0.39
0.47
0.57
0.62
0.70
0.83
0.96
1.30
50°C
60°C
70°C
85°C
Average Time Current Curves
Temperature Rerating Curve
Percentage of Rated Current
Time in Seconds
Temperature (°C)
Current in Amperes
A=SC6-075
B=SC6-090
C=SC6-110
D=SC6-120
E=SC6-135
F=SC6-160
G=SC6-185
H=SC6-250
SOCAY Electronics Co., Ltd.
Revision September 12, 2013
www.socay.com
2/4
@ SOCAY Electronics Co., Ltd. 2013
Specifications are subject to change without notice.
Please refer to www.socay.com for current information.
Radial Lead Resettable Polymer PTCs
SC6 Series
Test Procedures and Requirement
Test
Resistance
Hold Current
Time to Trip
Trip Cycle Life
Trip Endurance
Test Conditions
In still air @25±2°C
60 min, at I
hold
, In still air @25±2°C
Specified current, V
max
, @25±2°C
V
max
, I
max
,100 cycles
Vmax,24hours
Accept/Reject Criteria
R
min
≤R≤R
max
No trip
T≤Maximum Time To Trip
No arcing or burning
No arcing or burning
Soldering Parameters
Refer to the condition recommended
by the manufacturer. Max. ramping
rate should not exceed 4°C/Sec
Max. solder temperature should not
exceed 260°C
Cooling by natural convection in air
Pre-Heating Zone
Soldering Zone
Cooling Zone
Physical Specifications
Lead Material
Soldering
Characteristics
Insulating Material
Device Labeling
Tin-plated Copper clad steel
Solder ability per MIL-STD-202, Method 208E
Cured,
flame
retardant epoxy polymer meets UL 94V-0
requirements.
Marked with
‘SC’,
voltage, current rating
Part Numbering
Part Marking
SOCAY Electronics Co., Ltd.
Revision September 12, 2013
www.socay.com
3/4
@ SOCAY Electronics Co., Ltd. 2013
Specifications are subject to change without notice.
Please refer to www.socay.com for current information.
Radial Lead Resettable Polymer PTCs
SC6 Series
Dimensions
Figure1
A
Part
Number
Figure
Inches
Max.
SC6-050
SC6-065
SC6-075
SC6-090
SC6-110
SC6-120
SC6-135
SC6-160
SC6-185
SC6-250
Figure1
Figure1
Figure1
Figure2
Figure2
Figure1
Figure2
Figure2
Figure2
Figure2
0.236
0.236
0.276
0.256
0.276
0.283
0.256
0.346
0.346
0.394
mm
Max.
6.0
6.0
7.0
6.5
7.0
7.2
6.5
8.8
8.8
10.0
Inches
Max.
0.445
0.472
0.472
0.453
0.472
0.480
0,591
0.543
0.610
0.630
B
mm
Max.
11.3
12.0
12.0
11.5
12.0
12.2
14.5
13.8
15.5
16.0
Figure2
C
Inches
Typ.
0.200
0.200
0.200
0.200
0.200
0.200
0.200
0.200
0.200
0.200
mm
Typ.
5.1
5.1
5.1
5.1
5.1
5.1
5.1
5.1
5.1
5.1
Inches
Max.
0.118
0.118
0.118
0.118
0.118
0.118
0.118
0.118
0.118
0.118
D
mm
Inches
Max.
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
0.020
0.020
0.020
0.020
0.020
0.020
0.020
0.020
0.020
0.020
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
mm
Lead (dia)
Packaging
(Bulk Pack)
Warning
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This product should not be used in an application where the maximum interrupt voltage or maximum interrupt current in a fault
condition, Operation beyond the maximum rating or improper use may result in device damage and possible electrical arcing and
flame.
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A PPTC device is not a fuse, It is a nonlinear thermistor that limits current, Because under a fault condition all PPTC devices go
into a high resistance state but not open circuit hazardous voltage may be present at PPTC.
u
The devices are intended for protection against occasional over-current or over-temperature fault conditions and should not be
used when repeated fault conditions or prolonged trip events.
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In most application, power must be removed and the fault condition cleared in order to reset a PPTC device.
u
PPTC devices are not recommended to be installed in applications where the device is constrained such that its PPTC
properties are inhibited, for example in rigid potting materials or Add devices surface coating, Bundled devices ontology, which
lack adequate clearance to accommodate device expansion.
u
Contamination on of the PPTC material with certain silicone-based oils or some aggressive solvents can adversely impact the
performance of the devices. For example, Organic solvents to cleaning.
SOCAY Electronics Co., Ltd.
Revision September 12, 2013
www.socay.com
4/4
@ SOCAY Electronics Co., Ltd. 2013
Specifications are subject to change without notice.
Please refer to www.socay.com for current information.
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