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 www.unsemi.com.tw 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 2/5 @ 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 UN250-1000 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.