UNLIMITED FREE ACCESS TO THE WORLD'S BEST IDEAS

close
Already an Engineering360 user? Log in.

This is embarrasing...

An error occurred while processing the form. Please try again in a few minutes.

Customize Your Engineering360 Experience

close
Privacy Policy

This is embarrasing...

An error occurred while processing the form. Please try again in a few minutes.

NPFC - MIL-R-23648

RESISTORS, THERMAL (THERMISTOR), INSULATED, GENERAL SPECIFICATION FOR

active, Most Current
Buy Now
Organization: NPFC
Publication Date: 4 April 1995
Status: active
Page Count: 25
scope:

This specification covers the general requirements for general purpose insulated thermal resistors to be used for temperature compensation, control, and measurement over the temperature range specified (see 3.1).

The PIN shall be in the following form and as specified (see 3.1 and 6.1).

The style is identified by the symbol RTH followed by a two digit number. The letters identifies general purpose thermal resistors and the number identifies the physical configuration.

The characteristic is identified by a one-letter symbol in accordance with table I. TABLE I. Resistance ratio characteristic.

Symbol Resistance ratio characteristic ------------------------------------- A 19.8 ±10 percent B 29.4 ±10 percent C 48.7 ±10 percent D 0.5 ±10 percent E 0.55 ±10 percent

Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Defense Electronics Supply Center, ATTN: DESC-ELDM, 1507 Wilmington Pike, Dayton, OH 45444-5765 by using the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter.

Resistor lead types are identified as solderable (type S) or weldable (type W), (see 3.3.1).

The direct current (dc) zero-power resistance measured at 25°C and expressed in ohms is identified by a three-digit number. The first two digits represent significant figures, and the last digit specifies the number of zeros to follow. The standard resistance values for every decade shall follow the sequence demonstrated for the "10 to 100", decade in table II. Resistance values not listed shall be considered as not conforming to the specification.

Examples: 101 = 100 ohms 102 = 1,000 ohms 103 = 10,000 ohms 105 = 1 megohm

TABLE II. Standard resistance values for the 10 to 100 decade.

5.0 10.0 20.0 5.0 10.0 20.0 -------------------------------------- 10.0 10.0 10.0 33.0 33.0 33.0 11.0 .... .... 36.0 .... .... 12.0 12.0 .... 39.0 39.0 .... 13.0 .... .... 43.0 .... .... 15.0 15.0 15.0 47.0 47.0 47.0 16.0 .... .... 51.0 .... .... 18.0 18.0 .... 56.0 56.0 .... 20.0 .... .... 62.0 .... .... 22.0 22.0 22.0 68.0 68.0 68.0 24.0 .... .... 75.0 .... .... 27.0 27.0 .... 82.0 82.0 .... 30.0 .... .... 91.0 .... ....

The zero-power resistance tolerance is identified by a single letter in accordance with table III. TABLE III. Resistance tolerance versus temperature for each resistance tolerance.

Sequence Temperature F G J K ± percent ± percent ± percent ± percent ----------------------------------------------------------------------------------- 1 −55 1/ 10 (15) 1/ 12 (17) 1/ 15 (20) 1/ 20 (25) 2 −15 1/ 5 (9) 1/ 6 (10) 1/ 9 (13) 1/ 14 (18) 3 0 3 4 7 12 4 25 1 2 5 10 5 50 3 4 7 12 6 75 5 6 9 14 7 100 7 9 12 17 8 125 10 12 15 20 9 2/ 200 15 18 25 30 10 2/ 275 20 25 35 40 1/ The percentages in parentheses are for positive temperature coefficient thermistors. 2/ These temperatures not applicable to all styles (see 3.1).

Document History

March 4, 2020
RESISTOR, THERMAL (THERMISTOR) INSULATED, GENERAL SPECIFICATION FOR
A description is not available for this item.
March 4, 2020
RESISTOR, THERMAL (THERMISTOR) INSULATED, GENERAL SPECIFICATION FOR
Thermistors covered by this specification are intended for use in electronic equipment, and are used for stringent environmental and electrical requirements. Thermistors covered by this specification...
February 8, 2018
RESISTOR, THERMAL (THERMISTOR) INSULATED, GENERAL SPECIFICATION FOR
Thermistors covered by this specification are intended for use in electronic equipment, and are used for stringent environmental and electrical requirements. Thermistors covered by this specification...
September 5, 2014
RESISTOR, THERMAL (THERMISTOR) INSULATED, GENERAL SPECIFICATION FOR
Thermistors covered by this specification are intended for use in electronic equipment, and are used for stringent environmental and electrical requirements. Thermistors covered by this specification...
December 11, 2012
RESISTORS, THERMAL (THERMISTOR) INSULATED, GENERAL SPECIFICATION FOR
Thermistors covered by this specification are intended for use in electronic equipment, and are used for stringent environmental and electrical requirements. Thermistors covered by this specification...
January 23, 2009
RESISTORS, THERMAL (THERMISTOR) INSULATED, GENERAL SPECIFICATION FOR
Thermistors covered by this specification are intended for use in electronic equipment, and are used for stringent environmental and electrical requirements. Thermistors covered by this specification...
November 15, 2006
RESISTORS, THERMAL (THERMISTOR), INSULATED, GENERAL SPECIFICATION FOR
A description is not available for this item.
November 15, 2006
RESISTORS, THERMAL (THERMISTOR), INSULATED, GENERAL SPECIFICATION FOR
Thermistors covered by this specification are intended for use in electronic equipment, and are used for stringent environmental and electrical requirements. Thermistors covered by this specification...
February 3, 2005
RESISTORS, THERMAL (THERMISTOR), INSULATED, GENERAL SPECIFICATION FOR
Thermistors covered by this specification are intended for use in electronic equipment, and are used for stringent environmental and electrical requirements. Thermistors covered by this specification...
February 3, 2005
RESISTORS, THERMAL (THERMISTOR), INSULATED, GENERAL SPECIFICATION FOR
A description is not available for this item.
December 19, 2002
RESISTORS, THERMAL (THERMISTOR), INSULATED, GENERAL SPECIFICATION FOR
A description is not available for this item.
October 11, 2002
RESISTORS, THERMAL (THERMISTOR), INSULATED, GENERAL SPECIFICATION FOR
A description is not available for this item.
October 11, 2002
RESISTORS, THERMAL (THERMISTOR), INSULATED, GENERAL SPECIFICATION FOR
Thermistors covered by this specification are intended for use in electronic equipment, and are used for stringent environmental and electrical requirements. Thermistors covered by this specification...
June 15, 1998
RESISTORS, THERMAL (THERMISTOR), INSULATED, GENERAL SPECIFICATION FOR
A description is not available for this item.
April 4, 1995
RESISTORS, THERMAL (THERMISTOR), INSULATED, GENERAL SPECIFICATION FOR
A description is not available for this item.
MIL-R-23648
April 4, 1995
RESISTORS, THERMAL (THERMISTOR), INSULATED, GENERAL SPECIFICATION FOR
This specification covers the general requirements for general purpose insulated thermal resistors to be used for temperature compensation, control, and measurement over the temperature range...
April 15, 1993
RESISTORS, THERMAL (THERMISTOR), INSULATED, GENERAL SPECIFICATION FOR
A description is not available for this item.
August 17, 1992
RESISTORS, THERMAL (THERMISTOR), INSULATED, GENERAL SPECIFICATION FOR
A description is not available for this item.
August 17, 1992
RESISTORS, THERMAL (THERMISTOR), INSULATED, GENERAL SPECIFICATION FOR
This specification covers the general requirements for general purpose insulated thermal resistors to be used for temperature compensation, control and measurement over the temperature range...
January 10, 1990
RESISTORS, THERMAL (THERMISTOR), INSULATED, GENERAL SPECIFICATION FOR
A description is not available for this item.
July 15, 1988
RESISTORS, THERMAL (THERMISTOR), INSULATED, GENERAL SPECIFICATION FOR
A description is not available for this item.
July 15, 1988
RESISTORS, THERMAL (THERMISTOR), INSULATED, GENERAL SPECIFICATION FOR
A description is not available for this item.
June 19, 1986
RESISTORS, THERMAL (THERMISTOR), INSULATED, GENERAL SPECIFICATION FOR
A description is not available for this item.
February 9, 1978
RESISTORS, THERMAL (THERMISTOR), INSULATED, GENERAL SPECIFICATION FOR
A description is not available for this item.
February 9, 1978
RESISTORS, THERMAL (THERMISTOR), INSULATED, GENERAL SPECIFICATION FOR
A description is not available for this item.

References

Advertisement