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Page Title:
Resistors, Adjustable, Wire Wound, Power |
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|  INCH-POUND
MIL-R-19365D
25 March 2002
SUPERSEDING
MIL-R-19365C
18 March 1960
MILITARY SPECIFICATION
RESISTORS, ADJUSTABLE, WIRE WOUND, POWER
INACTIVE FOR DESIGN AFTER 24 NOVEMBER 1970.
This specification is approved for use by all Department s
And Agencies of the Department of Defense.
1. SCOPE
1.1 Scope. This specification covers power, wire wound, adjustable resistors for use in electrical,
electronic, communication, and associated equipment. These resistors have a resistance range of 1 ohm
to 15,000 ohms, inclusive, and a resistance tolerance of 5 percent. The power ratings (see table II and
3.1) cover a range of 11 watts to 210 watts, inclusive. These power ratings are applicable only when the
maximum resistance is engaged in the circuit. When only a portion of the resistance element is engaged,
the power rating is reduced in approximately the same proportion as the resistance.
1.2 Classification.
1.2.1 Part or Identifying Number (PIN). The PIN is as follows:
RX29
V
100
Style
Characteristic
Resistance
(1.2.1.1)
(1.2.1.2)
(1.2.1.3)
1.2.1.1 Style. The style is identified by the two letter symbol RX followed by a two digit number, the
letters identify power, wire wound, adjustable resistors, and the number identifies the size of the resistor.
1.2.1.2 Characteristic. The characteristic is identified by a single letter which identifies the maximum
continuous operating temperature and the high ambient temperature derating of resistors, in accordance
with table I.
TABLE I. Characteristic.
Symbol
Maximum continuous
Derating
operating temperature 1/
curve
350C
V
See figure 1
1/ This temperature is also the maximum permissible
hotspot surface temperature.
Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of
use in improving this document should be addressed to: Defense Supply Center, Columbus, ATTN:
DSCC-VAT, Post Office Box 3990, Columbus, Ohio 43216-5000 by using the Standardization
Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter.
AMSC N/A
FSC 5905
DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.
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