MIL-PRF-23648-2 Resistor, Thermal \(Thermistor\), Insulated Negative Temperature Coefficient Style Rth08This specification covers the requirements for style RTH08 thermistors. This style is available in resistance ratios A, B, and C. The only terminal lead available is S type. Resistance tolerance versus temperature characteristics F, G, J, and K are applicable through the maximum temperature of 125 degrees C.

Pages 1 - 2 - 3 - 4 - 5 - 6 - 7

MIL-PRF-23648/2E

(Unless otherwise indicated, copies of the above specifications, standards, and handbooks are

available from the Document Automation and Production Service, Building 4D, (DPM-DODSSP), 700

Robbins Avenue, Philadelphia, PA 19111-5094.)

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 450 seconds maximum.

3.4 Dissipation constant. The dissipation constant shall be 10 milliwatts per degrees Celsius minimum.

3.5 Power rating. The thermistor shall be capable of dissipating a maximum power of 1.0 watt at

25�C. Thermistors shall be derated in accordance with figure 2.

NOTES:

1. Dimensions are inches.

2. Millimeters are in parentheses.

3. Metric equivalents are given for general information only.

4. This dimension is lead separation only (measured across solder joints) and will vary with

resistance.

FIGURE 1. Style RTH08 thermistors.