MIL-PRF-18546G
w/ Amendment 1
20 October 2010
SUPERSEDING
MIL-PRF-18546G
15 December 2004
PERFOMANCE SPECIFICATION
RESISTORS, FIXED, WIRE-WOUND
(POWER TYPE, CHASSIS MOUNTED),
GENERAL SPECIFICATION FOR
This specification is approved for use by all Departments
and Agencies of the Department of Defense.
1. SCOPE
1.1 Scope. This specification covers the general requirements for power type, wire wound, fixed
resistors which utilize the principal of heat dissipation through a metal mounting surface. The resistors
have an initial resistance tolerance of ±1 percent and a resistance temperature characteristic range from
30 ppm/°C to 200 ppm/°C depending upon the resistance value. They are not capable for application
when the alternating current (ac) characteristics are of critical importance; however, provisions have been
made to minimize the inductance.
1.2 Classification.
1.2.1 Part or Identifying Number (PIN). The PIN is in the following form.
1.2.1.1 Style. The style is identified by the two letter symbol “RE” followed by a two digit number; the
letters identify chassis mounted, power type, wire wound, fixed resistor, and the number identifies the size
and power rating of the resistor.
1.2.1.2 Characteristic. The characteristic is identified by a single letter which identifies the maximum
continuous operating temperature, and inductive (G) or noninductive (N) method of winding in accordance
with
table I.
Comments, suggestions, or questions on this document should be addressed to: DLA Land and
Maritime, ATTN: VAT, Post Office Box 3990, Columbus, Ohio 43218-3990 or by email
resistor@dla.mil. Since contact information can change, you may want to verify the currency of this
address information using the ASSIST Online database at https://assist.daps.dla.mil.
AMSC N/A FSC 5905
INCH-POUND
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