PPTC/K250 Series Features Radial leaded Devices Cured,flame retardant epoxy polymer insulating material meets UL94V-0 requirements Bulk packaging,or tape and reel available on most models Applications Almost anywhere there is a low voltage power supply, up to DC60V and a load to be protested, including: Security and fire alarm systems Analog and digital line cards Modems and DSL Product dimensions Model K250-040U K250-060U K250-080U K250-090U K250-110U K250-120 K250-120U K250-145U K250-180T K250-180U K250-200U K250-400U K250-600U K250-800U Fig 1(2) 1(2) 1 1(2) 1 3 4 3 3 1 3 5 5 5 5 A(max) 7.4 7.4 7.4 6.0 7.4 7.0 5.5 7.0 7.0 10.2 9.0 12.0 12.0 16.0 20.0 ( mm ) B(max) 12.7 12.7 12.7 9.3 12.7 12.6 5.5 12.6 12.6 14.5 11.0 17.0 17.0 18.0 22.0 C(max) 4.5 4.5 4.5 3.8 4.5 4.5 2.6 4.5 4.5 4.2 4.5 4.5 4.5 4.5 4.5 D(typ) 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 Physical Characteristcs K250-040U～600U K250-800U Test Passive aging Humidity aging Thermal shock Resistance to solvent Vibration Storage conditions:-40℃ to 85℃ REV.2014.05.01 Material:Leads Environmental Specifications conditions ＋85℃,100hts ＋85℃,85%R.H.,100hrs ＋125℃,to-55℃,10times MIL-STD-202,Method 215 MIL-STD-202,Method 201 Tin plated copper,22AWG,0.60mm Tin plated copper,20AWG,0.80mm Resistance change ±8% typical ±8% typical ±12% typical No change No change 01 | www.spsemi.cn PPTC/K250 Series Electrical characteristics(25℃) Model Ihold Itrip Vmax Vmax OP Interrupt Imax Pd max Maximum Time To Trip Current Time Rmin Resistance Rmax R1max (A) (A) (Vdc) Vrms (A) (w) (A) (S) (Ω) (Ω) (Ω) K250-040U 0.040 0.08 60 250 3 1.0 0.5 0.2 30 60 80 K250-060U 0.060 0.12 60 250 3 1.0 0.5 0.5 20 0 60 90 K250-080U 0.080 0.16 60 250 3 1.0 1 0.25 14 22 33 K250-090U 0.090 0.18 60 250 3 1.0 1 0.5 10 20 31 K250-110U 0.110 0.22 60 250 3 1.0 1 1.1 6 12 16 K250-120 0.120 0.24 60 250 3 1.0 1 1.2 5 10 14 K250-120U 0.120 0.24 60 250 3 1.0 1 1.2 6 11 16 K250-145U 0.145 0.29 60 250 3 1.0 1 2.5 3.5 6.5 14 K250-180T 0.180 0.65 60 250 10 1.8 3 3.0 1.0 2.2 4 K250-180U 0.180 0.65 60 250 10 1.8 3 1.5 2 4 6 K250-200U 0.200 0.40 60 250 10 2.4 3 5.0 3 6 9 K250-400U 0.400 0.80 60 250 10 2.8 3 8.0 1 3 6 K250-600U 0.600 1.20 60 250 10 3.2 3 12.0 0.6 2 5 K250-800U 0.800 1.60 60 250 10 3.6 5 18.0 0.4 1 3 Ihold Hold Current:Maximum current device will not trip in 25℃ still air. Itrip Trip current:Minimum current at which the device will always trip in 25℃ still air Vmax OP Maximum operating volatge(Vdc) device can withstand without damage at ratde current(Imax). Vmax Interrupt Maximum interrupt volatge(Vac) device can withstand without damage at ratde current. Imax Maximum fault current device can withstand without damage at rated voltage. Pd Typical power dissipatde from device when in the tripped state in 25℃ still air environment at rated voltage Rmin/max Minimum device resistance prior to tripping at 25℃. Rmax Maximum device resistance prior to tripping at 25℃. R1max Maximum device resistance one hour after it is trippde at 25℃ . *CAUTION Operation beyond the specified rating may result in damage and possible arcing. Thermal Derating Chart-IH(A) Part number Maximum ambidnt operating temperatures(℃) -40 -20 0 25 40 50 60 70 80 K250-040U 0.060 0.053 0.047 0.040 0.034 0.031 0.027 0.024 0.019 K250-060U 0.090 0.080 0.070 0.060 0.050 0.046 0.041 0.036 0.029 K250-080U 0.124 0.110 0.095 0.080 0.066 0.059 0.051 0.044 0.033 K250-110U 0.171 0.151 0.131 0.110 0.091 0.081 0.071 0.061 0.046 K250-120/120U 0.191 0.170 0.148 0.120 0.104 0.093 0.082 0.071 0.055 K250-145U 0.225 0.199 0.172 0.145 0.119 0.106 0.093 0.080 0.060 K250-180T/180U 0.269 0.240 0.211 0.180 0.153 0.138 0.123 0.109 0.087 K250-200U 0.300 0.266 0.234 0.200 0.170 0.154 0.136 0.120 0.096 K250-400U 0.600 0.532 0.468 0.400 0.340 0.308 0.272 0.240 0.192 K250-600U 0.900 0.798 0.702 0.600 0.510 0.462 0.408 0.360 0.288 K250-800U 1.200 1.064 0.936 0.800 0.680 0.616 0.544 0.480 0.384 REV.2014.05.01 02 | www.spsemi.cn PPTC/K250 Series Thermal Derating Curve Typical Time-To-Trip at 25°C Average Time Current Curves 1000 180.0 160.0 140.0 120.0 100.0 80.0 60.0 40.0 20.0 0.0 K250080T/080U 100 TIME IN SECONDS Percentage of Derated Current Derating Curves for K250 Series K250110U/120UT /120T 10 K250120/120U 1 K250145/145U 0.1 -40 -20 0 20 40 60 K250-180 80 0.01 Temperature (°C) 0 1 2 3 CURRENT IN AMPERES Package Information Bulk: K250-040～180 1000pcs per bag K250-200～600 500pcs per bag K250-800 200pcs per bag REV.2014.05.01 03 | www.spsemi.cn