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 (Imax
)
I max= Maximum fault current device can withstand without damage at rated voltage (Vmax
Pdtyp.= 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.
0.25
Temperature Rerating Chart – I hold (A)
Ambient Operation Temperature
Part Number
-40°C
-20°C
0°C
25°C
40°C
50°C
60°C
70°C
85°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
0.008
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
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
Temperature Rerating Curve
Average Time Current Curves
Temperature (°C)
Current in Amperes
Test Procedures and Requirement
UN Semiconductor Co., Ltd.
Revision October 18, 2013
www.unsemi.com.tw
@ UN Semiconductor Co., Ltd. 2013
2 / 4
Specifications are subject to change without notice.
Please refer to www.unsemi.com.tw for current information.
UNSEMI [ UN Semiconducctor INC ]
