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Axial Leaded PTC Thermistor

The QTM12 series of axial leaded PTC thermistors offered by Quality Thermistor are available in resistance at 25?C from 10 ohm to 40K ohm. Power rating for the QTM12 series is .5 Watts at 25?C. The thermal time constant of the QTM12 series is 60 seconds maximum. QTM12 parts are a plastic molded, axial leaded part with a body length of .421" and a diameter of .155".

  • Positive Temperature Coefficient: .7%/?C
  • Thermal Time Constant: 60 seconds max in still air
  • Dissipation Constant: 2.5 mW/?C min in still air
  • Power Rating: .5 W at 25?C, derate to 0 W at 125?C
  • Resistance @25?C:10 ohm to 10K ohm
  • Operating temperature range: -55?C to 125?C
  • Storage temperature range: -65?C to 150?C