Radial Lead Resettable Polymer PTCs
JK250 Series
Description
JK250 Series is designed to protect against short duration
high voltage fault currents (power cross or power induction
surge) typically used in AC220V.
Features
u
u
u
u
0.02-2.0A hold current rating
250VAC operating voltage
Fast time-to- trip
RoHS compliant, Lead-Free and Halogen-Free
Applicable
u
u
u
AC220V over-current protection
Power ports
Customer Premises Equipment(CPE)
Electrical Parameters
V
max
(Vac)
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
I
max
(A)
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
P
dtyp.
(W)
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.8
1.8
2.4
2.8
3.2
3.6
3.6
3.6
4.8
4.8
Maximum Time
To Trip
Current
Time
(A)
(Sec.)
1.0
1.0
0.5
0.5
1.0
1.0
1.0
1.0
1.0
1.0
3.0
3.0
3.0
3.0
3.0
4.0
5.0
6.0
7.5
10.0
0.10
0.10
1.00
2.00
0.25
0.50
1.00
1.20
1.20
4.00
1.50
1.50
5.00
8.0
12.0
18.0
20.0
20.0
20.0
20.0
Resistance
R
min
(Ω)
80.0
60.0
30.0
22.0
14.0
10.0
10.0
6.0
6.0
3.5
1.0
1.0
3.0
1.0
0.6
0.40
0.50
0.20
0.20
0.20
R
max
(Ω)
160.0
120.0
60.0
40.0
22.0
20.0
20.0
12.0
11.0
6.5
2.2
3.0
6.0
3.0
2.00
1.00
0.80
0.80
0.60
0.40
R
1max
(Ω)
240.0
180.0
80.0
60.0
33.0
31.0
31.0
16.0
16.0
14.0
4.0
5.0
9.0
6.0
5.0
3.0
2.0
2.0
1.5
1.5
Part Number
JK250-020U
JK250-030U
JK250-040U
JK250-060U
JK250-080U
JK250-090U
JK250-100U
JK250-110U
JK250-120U
JK250-145U
JK250-180T
JK250-180U
JK250-200U
JK250-400U
JK250-600U
JK250-800U
JK250-1000U
JK250-1200U
JK250-1500U
JK250-2000U
I
hold
(A)
0.020
0.030
0.040
0.060
0.080
0.090
0.100
0.110
0.120
0.145
0.180
0.180
0.200
0.400
0.600
0.800
1.000
1.200
1.500
2.000
I
trip
(A)
0.045
0.065
0.080
0.120
0.160
0.180
0.200
0.220
0.240
0.290
0.540
0.540
0.400
0.800
1.200
1.600
2.000
2.400
3.000
4.000
UN Semiconductor Co., Ltd.
Revision
October 18, 2013
www.unsemi.com.tw
1/4
@ UN Semiconductor Co., Ltd. 2013
Specifications are subject to change without notice.
Please refer to www.unsemi.com.tw for current information.
Radial Lead Resettable Polymer PTCs
JK250 Series
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.
0.48
0.25
Temperature Rerating Chart
–
I
hold
(A)
Ambient Operation Temperature
Part Number
-40°C
-20°C
0°C
25°C
40°C
Hold Current (A)
JK250-020U
JK250-030U
JK250-040U
JK250-060U
JK250-080U
JK250-090U
JK250-100U
JK250-110U
JK250-120U
JK250-145U
JK250-180T
JK250-180U
JK250-200U
JK250-400U
JK250-600U
JK250-800U
JK250-1000U
JK250-1200U
JK250-1500U
JK250-2000U
0.031
0.047
0.062
0.093
0.124
0.140
0.155
0.171
0.186
0.230
0.280
0.280
0.310
0.620
0.930
1.240
1.550
1.860
2.330
3.100
0.027
0.041
0.055
0.082
0.110
0.119
0.137
0.145
0.164
0.191
0.238
0.238
0.274
0.550
0.820
1.100
1.370
1.650
2.100
2.740
0.024
0.036
0.048
0.070
0.095
0.105
0.119
0.129
0.143
0.170
0.211
0.211
0.238
0.480
0.710
0.950
1.190
1.430
1.650
2.380
0.020
0.030
0.040
0.060
0.080
0.090
0.100
0.110
0.120
0.145
0.180
0.180
0.200
0.400
0.600
0.800
1.000
1.200
1.500
2.000
0.016
0.025
0.033
0.049
0.066
0.077
0.085
0.094
0.098
0.123
0.153
0.153
0.164
0.330
0.490
0.660
0.820
1.020
1.280
1.640
0.015
0.022
0.029
0.044
0.058
0.069
0.077
0.085
0.088
0.112
0.139
0.139
0.146
0.290
0.440
0.580
0.730
0.900
1.130
1.460
0.013
0.019
0.026
0.038
0.051
0.061
0.068
0.075
0.077
0.099
0.122
0.122
0.128
0.260
0.380
0.510
0.640
0.816
1.020
1.280
0.011
0.017
0.022
0.033
0.044
0.055
0.61
0.067
0.066
0.088
0.110
0.110
0.110
0.22
0.33
0.44
0.55
0.732
0.915
1.10
0.008
0.012
0.016
0.025
0.033
0.043
0.045
0.053
0.049
0.070
0.086
0.086
0.082
0.160
0.250
0.330
0.410
0.564
0.705
0.820
50°C
60°C
70°C
85°C
Average Time Current Curves
Temperature Rerating Curve
Percentage of Rated Current
Time in Seconds
Current in Amperes
Temperature (°C)
Test Procedures and Requirement
UN Semiconductor Co., Ltd.
Revision
October 18, 2013
www.unsemi.com.tw
2/4
@ UN Semiconductor Co., Ltd. 2013
Specifications are subject to change without notice.
Please refer to www.unsemi.com.tw for current information.
Radial Lead Resettable Polymer PTCs
JK250 Series
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
R
min
≤R≤R
max
No trip
T≤Maximum Time To Trip
No arcing or burning
No arcing or burning
Accept/Reject Criteria
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
0.02-0.04A Tin-plated Copper clad steel
0.05-2.00A Tin-plated Copper
Solder ability per MIL-STD-202, Method 208E
Cured,
flame
retardant epoxy polymer meets UL 94V-0
requirements.
Marked with
‘SC’,
voltage, current rating
Dimensions
Figure1
A
Part Number
Figure
mm
Max.
7.4
7.4
7.4
7.4
Figure2
B
mm
Max.
12.7
12.7
12.7
12.7
C
mm
Typ.
5.1
5.1
5.1
5.1
Figure3
D
mm
Max.
3.8
3.8
3.8
3.8
Figure4
Lead (dia)
Packaging
Inches
0.020
0.020
0.020
0.024
mm
0.5
0.5
0.5
0.6
(Bulk Pack)
JK250-020U
JK250-030U
JK250-040U
JK250-060U
Figure1(2)
Figure1(2)
Figure1(2)
Figure1(2)
1000
1000
1000
1000
UN Semiconductor Co., Ltd.
Revision
October 18, 2013
www.unsemi.com.tw
3/4
@ UN Semiconductor Co., Ltd. 2013
Specifications are subject to change without notice.
Please refer to www.unsemi.com.tw for current information.
Radial Lead Resettable Polymer PTCs
JK250 Series
JK250-080U
JK250-090U
JK250-100U
JK250-110U
JK250-120U
JK250-145U
JK250-180T
JK250-180U
JK250-200U
JK250-400U
JK250-600U
JK250-800U
JK250-1000U
JK250-1200U
JK250-1500U
JK250-2000U
Figure1
Figure1
Figure1
Figure3
Figure3
Figure3
Figure1
Figure3
Figure4
Figure4
Figure4
Figure4
Figure4
Figure4
Figure4
Figure4
7.4
7.4
7.8
7.0
7.0
7.0
10.2
11.2
10.5
10.5
16.0
20.0
20.0
22.0
25.0
26.0
12.7
12.7
12.0
12.6
10.0
10.0
14.5
14.5
17.0
17.0
18.0
22.0
22.0
28.0
30.0
32.0
5.1
5.1
5.1
5.1
5.1
5.1
5.1
5.1
5.1
5.1
5.1
5.1
5.1
5.1
5.1
5.1
3.8
3.8
3.8
3.8
3.8
3.8
3.4
3.8
3.8
3.8
4.5
4.5
4.5
4.5
4.5
4.5
0.024
0.024
0.024
0.024
0.024
0.024
0.024
0.024
0.024
0.031
0.031
0.031
0.031
0.031
0.031
0.031
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
0.8
0.8
0.8
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
500
500
200
200
200
200
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.
u
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.
u
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.
UN Semiconductor Co., Ltd.
Revision
October 18, 2013
www.unsemi.com.tw
4/4
@ UN Semiconductor Co., Ltd. 2013
Specifications are subject to change without notice.
Please refer to www.unsemi.com.tw for current information.
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