NSN 5905-00-001-5856

Thermistor Probe Assembly

About this product

250.00 milliwatts maximum power dissipation rating, 60.0 thermal time constant in seconds, 2.5 power dissipation constant in milliwatts per deg celsius, tempurature points for resistance readings at zero power: 75.0 degrees celsius 4th resistance-temperature point.

Manufacturer part number RTH42ES221J for national stock number 5905000015856.


  • Product description

    Thermal Resistor NSN 5905-00-001-5856.

  • MPN or Model


  • Schedule B
    8533.40.0080 (Variable resistors, including potentiometers, nesoi)
  • NMF (National Motor Freight)
    062960 - Reostats/parts NOI
  • Unit Weight (Est.)
    0.1 lb
  • Reliability Indicator
    Not established
  • Terminal Length
    1.200 inches
  • Body Length
    0.285 inches
  • Body Outside Diameter
    0.100 inches
  • Terminal Diameter
    0.020 inches
  • Maximum Power Dissipation Rating
    250.00 milliwatts
  • Ambient Tempurature At Full Rated Power
    25.0 degrees celsius
  • Maximum Operating Temp
    125.0 degrees celsius
  • Thermal Time Constant In Seconds
  • Power Dissipation Constant In Milliwatts Per Deg Celsius
  • Tempurature Points For Resistance Readings At Zero Power
    75.0 degrees celsius 4th resistance-temperature point
  • Zero Power Resistance At Specificationified Temp
    2.6 kilohms 1st resistance-temperature point
  • Resistance Tolerance At A Specificationified Tempurature In Percent
    -9.0 to 9.0 4th resistance-temperature point
  • Inclosure Type
  • Zero Power Resistance
    5.100 kilohms
  • Zero Power Resistance Tolerance In Percent At Reference Temp
  • Style Designator
  • Test Data Document
    81349-milt23648 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.).
  • Terminal Type And Quantity
    2 wire lead
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Thermal Resistor

A thermally sensitive resistor whose primary function is to exhibit a change in electrical resistance with a change in body temperature. Item may be mounted in a probe or housing. For ballast tube type resistors, see resistor (1), current regulating. Excludes transmitter (1), temperature, electrical resistance and temperature element, resistance meteorological.

Mechanic Bill explains Thermistor Probe Assembly

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NSN 5905000015856

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
RTH42ES221J Military Specifications
MILT23648-19 Military Specifications
TG1-8-221K Texas Instruments Incorporated
MIL-PRF-23648/19 Military Specifications
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