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                                          PTC Formulated Powder

                                          PTC Thermistor (Positive Temperature Coeffieicient Thermistor) is a kind of oxide semiconducting ceramics which is made from barium titanate as the main materials.

                                          Be provided with a notable property, PTC’s resistance can be increased rapidly above the switching temperature,and it’s resistance can be return to the original state when the temperature down to under the switching temperature.

                                          The switching temperature: the point of resistance rapid change temperature,it can be free set in the range from -50ºC to 300ºC according to the application by the raw material.

                                          The resistance at 25ºC can be set from 5Ω·cm to 500kΩ·cm with slight differences according to the switching temperature.

                                          Now, PTC Thermistor has been used to a wide range of constant temperature heaters,current limiting element,and temperature sensors, Motor Starter, Degaussing Circuit,…

                                          The resistance is obtained this formula:
                                          R = ρ×(s/t)
                                          R : Resistance at 25ºC (Ω)
                                          ρ: Specific resistance of PTC element's material at 25ºC(Ω·cm)
                                          s : PTC element area (cm2)
                                          t : PTC element thickness (cm)

                                          PTC Formulated Powder:
                                           
                                          Part Code
                                          Curie Temperature (ºC)
                                          Resistivity at 25ºC(Ω.cm)
                                          Broken Voltage(V/mm)
                                          N5*B
                                          -50±5
                                          100~5000
                                          > 25
                                          P4*E
                                          40±5
                                          100~5’000
                                          > 250
                                          P5*E
                                          50±5
                                          20~100
                                          > 250
                                          P6*E
                                          60±5
                                          20~100
                                          > 250
                                          P7*E
                                          70±5
                                          20~100
                                          > 250
                                          P8*E
                                          80±5
                                          20~100
                                          > 250
                                          P9*E
                                          90±5
                                          20~300
                                          > 250
                                          X0*C
                                          100±5
                                          20~300
                                          > 25
                                          X0*E
                                          100±5
                                          5~50
                                          > 250
                                          X2*C
                                          120±5
                                          5~500
                                          > 25
                                          X2*E
                                          120±5
                                          5~50
                                          > 250
                                          X3*C
                                          130±5
                                          5~500
                                          > 25
                                          X3*E
                                          130±5
                                          5~50
                                          > 220
                                          X5*C
                                          150±5
                                          5~500
                                          > 25
                                          X8*C
                                          180±5
                                          5~50
                                          > 25
                                          Y0*C
                                          200±5
                                          10~50
                                          > 25
                                          Y0*E
                                          200±5
                                          500~5000
                                          > 250
                                          Y2*E
                                          220±5
                                          500~5000
                                          > 250
                                          Y4*E
                                          240±5
                                          500~5000
                                          > 250
                                          Y8*E
                                          280±5
                                          500~10000
                                          > 250
                                          Z2*E
                                          320±10
                                          500~10000
                                          > 250

                                           

                                          Copyright(C)2014,China Qingdao Hongjin Chemical Co., Ltd.  Supported by ChemNet ChinaChemNet Toocle

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