Shibaura Electronics


Thermistor Sensor


Patent No. 5207329, fast response and high accuracy



Wire: cross-linked PE


  • Patent No.5207329, US 9,176,443
  • Non-contact temperature detection using infrared rays
  • Infrared detection type for fuser rollers
  • Fast response and high accuracy with two compact thermistor elements arranged symmetrically
Applications Fuser rollers for copying machines, printers and multi-function printers (surface)
Operating temperature -10 to +150℃ (on a compensation thermistor element, except connector)
Sensing part: -10 to +450℃ (based on detected temperature of an object)
The maximum operating temperature (150℃) shall not be exceeded.
Thermal time constant τ = 0.6 ±0.2 sec. (at 5mm from φ40 black roller)
Dissipation constant δ ≒ 0.23mW/℃
Withstand voltage 500VAC for 1 sec.
Insulation resistance ≥100MΩ at 500VDC
Resistance R25 = 220kΩ
B constant B25/50 = 3750K

* Values in the above table are for reference only.
* Unless otherwise stated, the thermal time constant and the dissipation constant are measured in still air.

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