MIL-PRF-23648-9 Resistor, Thermal \(Thermistor\), Insulated Positive Temperature Coefficient Style Rth22This specification covers the detail requirements for style RTH22 thermistors. This style is available in resistance ratio E only. Terminal leads type S and W are available. Resistance tolerance versus temperature characteristics G, J, and K are applicable through the maximum temperature of 125 degrees C.

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MIL-PRF-23648/9C

2.3 Order of precedence. In the event of a conflict between the text of this document and the

references cited herein, the text of this document takes precedence. Nothing in this document, however,

supersedes applicable laws and regulations unless a specific exemption has been obtained.

3. REQUIREMENTS

3.1 Requirements. Requirements shall be in accordance with MIL-PRF-23648, and as specified herein.

3.2 Interface and physical dimensions. The thermistors shall meet the interface and physical

dimensions as specified on figure 1 and herein.

3.3 Thermal time constant. The thermal time constant shall be 60 seconds maximum.

3.4 Dissipation constant. The dissipation constant shall be 5 milliwatts per degrees Celsius minimum.

3.5 Power rating. The thermistor shall be capable of dissipating a maximum power of 0.5 watts at 25�C.

Thermistors shall be derated in accordance with figure 2.

Inch

0.08

0.003

0.51

0.02

0.64

0.025

3.56

0.14

10.41

0.41

1.25

31.75

NOTES:

1. Dimensions are in inches.

2. Metric equivalents are given for general information only.

FIGURE 1. Style RTH22 thermistors.