Radial Lead Resettable Polymer PTCs

Radial Lead Resettable Polymer PTCs
UN250 Series
Description
UN250 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
265V 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
Maximum Time
To Trip
Current
Time
(A)
(Sec.)
V max
(Vac)
I max
(A)
P dtyp.
(W)
0.04
265
1.0
0.6
0.06
0.030
0.065
265
1.0
0.6
UN250-040
0.040
0.080
265
1.0
UN250-050
0.050
0.10
265
UN250-060
0.060
0.120
UN250-080
0.080
UN250-120-C
Part Number
I hold (A)
UN250-020
0.020
UN250-030
I trip
(A)
Resistance
R min
(Ω)
R max
(Ω)
R 1max
(Ω)
20
65.0
165.0
225.0
0.09
15
36.0
90.0
120.0
0.7
0.12
15
27.0
65.0
90.0
1.0
0.7
0.15
15
22.0
55.0
75.0
265
1.0
0.8
0.18
15
18.0
45.0
60.0
0.160
265
1.2
0.8
0.24
15
11.0
22.0
33.0
0.120
0.240
265
12
1.0
0.36
15
6.0
12.0
16.0
UN250-120-S
0.120
0.240
265
1.2
1.0
0.36
15
6.0
12.0
16.0
UN250-160
0.160
0.320
265
2.0
1.4
0.48
25
3.5
7.8
10.4
UN250-200-C
0.200
0.400
265
3.0
1.5
0.60
25
3.0
6.5
8.0
UN250-200-S
0.200
0.400
265
3.0
1.5
0.60
25
3.0
6.5
8.0
UN250-250
0.250
0.500
265
3.5
1.5
0.75
20
2.2
5.0
5.0
UN250-300
0.300
0.600
265
4.5
1.7
0.90
20
1.8
4.0
4.8
UN250-330
0.330
0.660
265
4.5
1.7
0.99
20
1.6
3.6
4.3
UN250-400
0.400
0.800
265
5.5
2.0
1.20
25
1.35
3.0
3.6
UN250-500
0.500
1.000
265
6.5
2.5
1.50
25
0.90
2.0
2.4
UN250-550
0.550
1.100
265
7.0
2.5
1.65
25
0.85
1.8
2.2
UN250-600
0.600
1.200
265
6.0
2.5
1.80
25
0.80
1.65
2.2
UN250-650
0.650
1.300
265
6.5
2.6
1.95
30
0.65
1.3
1.6
UN250-750
0.750
1.500
265
7.5
2.6
2.25
30
0.55
1.1
1.3
UN Semiconductor Co., Ltd.
Revision October 18, 2013
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1/5
@ 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
UN250 Series
UN250-800
0.800
1.600
265
8.0
2.7
2.40
3.0
0.5
1.0
1.2
UN250-900
0.900
1.800
265
9.0
2.8
2.70
35
0.45
0.9
1.1
UN250-1000
1.000
2.000
265
10.0
2.9
3.00
35
0.37
0.75
0.9
UN250-1100
1.100
2.200
265
10.0
3.1
3.30
35
0.33
0.66
0.80
UN250-1250
1.250
2.500
265
10.0
3.3
3.75
40
0.27
0.55
0.66
UN250-1350
1.350
2.700
265
10.0
3.5
4.05
40
0.25
0.50
0.60
UN250-1600
1.600
3.200
265
10.0
3.9
4.80
40
0.20
0.40
0.48
UN250-1850
1.850
3.7
265
10.0
4.3
5.55
50
0.165
0.33
0.40
UN250-2000
2.000
4.000
265
10.0
4.5
6.00
50
0.135
0.27
0.33
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.
0.48
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
0.015
0.022
0.029
0.037
0.044
0.059
0.088
0.088
0.117
0.146
0.146
0.180
0.220
0.240
0.290
0.370
0.400
0.440
0.470
0.550
0.580
0.660
0.013
0.019
0.026
0.032
0.038
0.051
0.077
0.077
0.102
0.128
0.128
0.160
0.190
0.210
0.260
0.320
0.35
0.380
0.420
0.480
0.510
0.580
0.011
0.017
0.022
0.028
0.033
0.044
0.066
0.066
0.088
0.110
0.110
0.140
0.170
0.180
0.220
0.280
0.300
0.330
0.360
0.410
0.440
0.500
0.008
0.012
0.016
0.021
0.025
0.033
0.049
0.049
0.064
0.082
0.082
0.100
0.012
0.140
0.160
0.210
0.230
0.250
0.27
0.310
0.330
0.370
Hold Current (A)
UN250-020
UN250-030
UN250-040
UN250-050
UN250-060
UN250-080
UN250-120-C
UN250-120-S
UN250-160
UN250-200-C
UN250-200-S
UN250-250
UN250-300
UN250-330
UN250-400
UN250-500
UN250-550
UN250-600
UN250-650
UN250-750
UN250-800
UN250-900
0.031
0.047
0.062
0.078
0.093
0.124
0.186
0.186
0.248
0.310
0.310
0.390
0.470
0.510
0.620
0.780
0.850
0.930
1.010
1.160
1.240
1.400
0.027
0.041
0.055
0.069
0.082
0.110
0.164
0.164
0.219
0.274
0.274
0.340
0.410
0.450
0.550
0.690
0.750
0.820
0.890
1.030
1.100
1.230
0.024
0.036
0.048
0.060
0.070
0.095
0.143
0.143
0.190
0.238
0.238
0.300
0.360
0.390
0.480
0.600
0.660
0.710
0.770
0.890
0.950
1.070
0.020
0.030
0.040
0.050
0.060
0.080
0.120
0.120
0.160
0.200
0.200
0.250
0.300
0.330
0.400
0.500
0.550
0.600
0.650
0.750
0.800
0.900
UN Semiconductor Co., Ltd.
Revision October 18, 2013
0.016
0.025
0.033
0.041
0.049
0.066
0.098
0.098
0.131
0.164
0.164
0.210
0.250
0.270
0.330
0.410
0.45
0.490
0.530
0.620
0.660
0.740
www.unsemi.com.tw
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@ 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
UN250 Series
UN250-1000
UN250-1100
UN250-1250
UN250-1350
UN250-1600
UN250-1850
UN250-2000
1.550
1.710
1.940
2.090
2.480
2.870
3.100
1.370
1.510
1.710
1.850
2.190
2.530
2.740
1.190
1.310
1.490
1.610
1.900
2.200
2.380
1.000
1.100
1.250
1.350
1.600
1.850
2.000
0.820
0.900
1.030
1.110
1.310
1.520
1.640
0.730
0.800
0.910
0.990
1.170
1.350
1.460
0.640
0.700
0.800
0.860
1.020
1.180
1.280
0.550
0.610
0.690
0.740
0.880
1.020
1.100
0.410
0.450
0.510
0.550
0.660
0.760
0.820
Temperature Rerating Curve
Time in Seconds
Percentage of Rated Current
Average Time Current Curves
Temperature (°C)
Current in Amperes
Test Procedures and Requirement
Test
Test Conditions
Accept/Reject Criteria
Resistance
In still air @25±2°C
Rmin≤R≤Rmax
Hold Current
60 min, at Ihold, In still air @25±2°C
No trip
Time to Trip
Specified current, Vmax, @25±2°C
T≤Maximum Time To Trip
Trip Cycle Life
Vmax, Imax,100 cycles
No arcing or burning
Trip Endurance
Vmax,24hours
No arcing or burning
Soldering Parameters
Pre-Heating Zone
Refer to the condition recommended
by the manufacturer. Max. ramping
rate should not exceed 4°C/Sec
Soldering Zone
Max. solder temperature should not
exceed 260°C
Cooling Zone
Cooling by natural convection in air
Physical Specifications
Lead Material
Soldering
Characteristics
Insulating Material
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.
UN Semiconductor Co., Ltd.
Revision October 18, 2013
www.unsemi.com.tw
3/5
@ 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
UN250 Series
Device Labeling
Marked with ‘UN’, voltage, current rating
Dimensions
Figure1
Figure2
Figure3
Figure4
A
B
C
D
Lead (dia)
Packaging
Part Number
Figure
mm
Max.
mm
Max.
mm
Typ.
mm
Max.
mm
(Bulk Pack)
UN250-020
Figure1(2)
6.0
8.7
5.1±0.5
4.6
0.5
1000
UN250-030
Figure1(2)
6.0
8.7
5.1±0.5
4.6
0.5
1000
UN250-040
Figure1(2)
6.0
9.3
5.1±0.5
4.6
0.5
1000
UN250-050
Figure1(2)
6.0
9.3
5.1±0.5
4.6
0.5
1000
UN250-060
Figure1
6.0
10.0
5.1±0.5
4.6
0.6
1000
UN250-080
Figure1
6.0
10.0
5.1±0.5
4.6
0.6
1000
UN250-120-C
Figure1
7.2
11.2
5.1±0.5
4.6
0.6
1000
UN250-120-S
Figure3
6.5
10.5
5.1±0.5
4.6
0.6
1000
UN250-160
Figure1
9.3
12.8
5.1±0.5
4.6
0.6
1000
UN250-200-C
Figure1
10.0
13.5
5.1±0.5
4.6
0.6
1000
UN250-200-S
Figure3
9.3
12.8
5.1±0.5
4.6
0.6
1000
UN250-250
Figure3
9.3
12.8
5.1±0.5
4.6
0.6
1000
UN250-300
Figure3
9.3
14.5
5.1±0.5
4.6
0.6
1000
UN250-330
Figure3
9.3
14.5
5.1±0.5
4.6
0.6
1000
UN250-400
Figure4
10.5
16.5
5.1±0.5
4.6
0.8
1000
UN250-500
Figure4
11.8
17.5
5.1±0.5
4.6
0.8
500
UN250-550
Figure4
11.8
17.5
5.1±0.5
4.6
0.8
500
UN250-600
Figure4
11.8
17.5
5.1±0.5
4.6
0.8
500
UN250-650
Figure4
14.0
18.3
5.1±0.5
4.6
0.8
500
UN250-750
Figure4
14.5
21.7
5.1±0.5
4.6
0.8
500
UN250-800
Figure4
14.5
21.7
5.1±0.5
4.6
0.8
500
UN250-900
Figure4
16.5
24.5
10.2±0.5
4.6
0.8
200
UN250-1000
Figure2
21.1
25.1
10.2±0.5
4.6
0.8
200
200
UN250-1100
Figure4
19.0
25.5
10.2±0.5
4.6
0.8
UN250-1250
Figure2
24.2
28.2
10.2±0.5
4.6
0.8
200
UN250-1350
Figure4
19.0
29.0
10.2±0.5
4.6
0.8
200
UN250-1600
Figure4
21.5
29.0
10.2±0.5
4.6
0.8
200
UN250-1850
Figure4
25.0
29.0
10.2±0.5
4.6
0.8
100
UN250-2000
Figure4
25.0
33.5
10.2±0.5
4.6
0.8
200
UN Semiconductor Co., Ltd.
Revision October 18, 2013
www.unsemi.com.tw
4/5
@ 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
UN250 Series
Warning
u 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
5/5
@ UN Semiconductor Co., Ltd. 2013
Specifications are subject to change without notice.
Please refer to www.unsemi.com.tw for current information.